5. 1 personal accident

5. 1. 1 A personal casualty accident under any of the following circumstances is a personal accident in power production:

5. 1. 1. 1 personal injury or death (including personal injury or death caused by productive acute poisoning, the same below) occurred in work related to power production.

Personal injury and death in the process of power production includes personal injury and death in violation of labor discipline during work.

Productive acute poisoning refers to productive toxic poisoning. Food poisoning and occupational diseases are not within the statistical scope of these provisions.

Workers who get sick in the course of work and are confirmed by the diagnosis of hospitals at or above the county level and the investigation by the supervision and administration department of production safety as their own diseases are not included in personal accidents in power production.

"Private work" employee casualties are not counted as power production casualties, but one of the following circumstances is not counted as "private work":

(1) The tasks of specific staff are arranged by superiors (including team leaders);

(2) the behavior of specific staff members is not for the purpose of seeking personal gain.

5. 1. 1.2 When an employee is engaged in power production-related work, a traffic accident with the same or above responsibilities of the unit occurs, causing personal injury or death.

When employees (including drivers and passengers) are engaged in power production-related work, road traffic accidents that are investigated and handled by public security organs occur, and we are judged to bear the same responsibility, main responsibility or full responsibility in the determination of road traffic accident responsibility, resulting in casualties of our employees, which is regarded as power production accidents.

Motor vehicles in the power production area are squeezed, dropped, collided or overturned during driving; People get on and off while driving; If the sports car causes the casualties of employees in this unit, we shall bear the "equal responsibility", "main responsibility" or "full responsibility" and report it to the local safety production supervision and management department as an electric power production accident, and the accident category shall be filled in as "vehicle injury".

Traffic accidents such as employees taking the company bus after work, participating in cultural and sports activities organized by the company, and going out for meetings are not regarded as power production accidents.

5. 1. 1.3 In the electric power production area, the personnel of other units are engaged in work related to electric power production, resulting in personal injury or death accidents for which the unit is responsible.

The responsibility of this unit refers to any of the following circumstances:

1, the qualification examination is not strict, and the project contractor does not meet the requirements;

2, before the start of the contractor, engineering and technical personnel and safety supervision personnel to conduct a comprehensive safety technical disclosure, or there is no complete record;

3. Working in dangerous production areas, without special safety technical disclosure in advance, without requiring the contractor to formulate safety measures, and the relevant safety measures are not coordinated (including setting obvious safety warning signs on relevant facilities and equipment, etc.). );

4. No safety production management agreement has been signed, or their respective safety production responsibilities and safety measures should be taken are not clearly defined in the agreement.

Qualification examination includes business license and qualification certificate issued by relevant departments, qualification certificate of legal representative, construction resume and safety construction records in recent 3 years; Whether the technical qualities of the person in charge of construction, engineering technicians and workers meet the engineering requirements; Whether the special type of work is certified; Whether the construction machinery, instruments, safety protection facilities and safety appliances meet the construction needs; Whether the contractor with two-level organization has full-time safety management organization; Whether the construction team with more than 30 people is equipped with full-time security officers, and whether the construction team with less than 30 people is equipped with part-time security officers.

Dangerous production area refers to the place where injuries and equipment accidents such as electric shock, falling from high altitude, explosion, blasting, lifting operation, poisoning, suffocation, mechanical injury, fire, burn and so on are prone to occur.

5. 1.2 personal accident classification

5. 1.2. 1 fatal accident

Accidents that cause more than 10 deaths.

5. 1.2.2 Major personal casualty accident

An accident that killed three to nine people.

5. 1.2.3 general casualty accident

Accidents that cause 1 to 2 deaths (including minor injuries and serious injuries in multi-person accidents).

According to article 48 of the document of the Ministry of Labor. 1993 September Labor Office (1993)No. 140 employee who dies within 30 days after being injured (except for death due to medical accident, which must be confirmed by the medical accident appraisal department) shall be counted as death; Those who die more than 30 days will not be reported and counted again; Minor injuries to serious injuries are also reported and counted according to this principle.

5. 1.2.4 Serious and minor injuries

A personal accident in which no one died.

The identification of serious injury accidents shall be carried out in accordance with 1960 "Opinions on the Scope of Serious Injury Accidents". Minor injury accident means that the injured employee has not been to work for more than one working day, but it is not serious enough.

5.2 Power grid accidents and obstacles

5.2. 1 Extraordinary power grid accident

A large-scale power outage in one of the following situations in the power grid is a major power grid accident.

5.2. 1. 1 The power supply load shedding load of the power grid of provinces and autonomous regions or China Southern Power Grid reaches one of the following values:

Power grid load reduces power supply load

20000MW and above 20%

30% or less than 4000MW 10000 ~ 20000 MW

40% or below 3000MW 5000 ~ 10000 MW

50% or less than 2000MW 1000 ~ 5000 MW

Power grid load refers to the power grid load uniformly dispatched by the power dispatching organization before the accident.

When the power grid load reduction affects several provincial power grids, the power grid load is calculated according to the whole network load before the accident in China Southern Power Grid. The calculation range of power supply load shedding is the same as that of power grid load.

5.2. 1.2 cities where the people's governments of provinces and autonomous regions are located and other big cities reduce the supply load by 80% or more.

A big city refers to a city with a non-agricultural population of more than 500 thousand in the urban area and its suburbs; Medium-sized cities refer to cities with urban and suburban non-agricultural populations of more than 200,000 and less than 500,000. A small city refers to a city with a non-agricultural population of less than 200,000 in the urban and suburban areas.

Urban supply reduction load refers to urban supply reduction load, excluding counties or county-level cities under the jurisdiction of the city.

5.2.2 Major power grid accidents

Do not constitute a major power grid accident, and meet one of the following conditions, as a major power grid accident.

5.2.2. 1 The power supply load shedding load of the power grids of provinces and autonomous regions or China Southern Power Grid reaches one of the following values:

Power grid load reduces power supply load

20000MW and above 8%

10000 ~ below 20000mw 10% or 1600MW.

Under 5000 ~ 10000 MW 15% or 1000MW.

20% or below 750MW 1000 ~ 5000 MW

/kloc-40% or 200MW below 0/000 MW.

The cities where the people's governments of 5.2.2.2 Province and autonomous regions are located and other big cities have reduced the power supply load by more than 40%.

Medium-sized cities in 5.2.2.3 reduce the supply load by 60% or more.

Small cities in 5.2.2.4 reduce the supply load by 80% or more.

5.2.3 Class A general power grid accident

If it does not constitute a particularly serious power grid accident and meets one of the following conditions, it will be classified as a class A general power grid accident.

5.2.3.1110 kV or above provincial power grid or China Southern Power Grid is abnormally disconnected, and the power supply reduction load of the whole network reaches one of the following values:

Power grid load reduces power supply load

20000MW and above 4%

5% or less than 800MW 10000 ~ 20000 MW

8% or below 500MW 5000 ~ 10000 MW

1000 ~ below 5000mw 10% or 400MW

Less than 20% of 1000MW or1000 MW.

Abnormal disconnection of power grid includes automatic disconnection, relay protection and automatic safety device operation disconnection.

Busbars with voltage levels of 220kV and above in 5.2.3.2 Substation were forced to stop running. (Class A general power grid accident)

Forced shutdown refers to the state that the equipment stops running without dispatching approval, or cannot be put into operation immediately according to regulations.

The power quality of 5.2.3.3 power grid is reduced, resulting in one of the following situations:

(1) Power grid with installed capacity of 3000MW and above, with frequency deviation exceeding 50±0.2Hz for more than 30 minutes; Or the frequency deviation exceeds 50±0.5Hz, and the duration is more than 15 minutes.

(2) The frequency deviation of power grid with installed capacity less than 3000 MW exceeds 50 0.5 Hz and lasts for more than 30 minutes; Or the frequency deviation exceeds 50 1 Hz and the duration exceeds 15 minutes.

(3) The voltage deviation of the voltage monitoring control point exceeds the voltage curve value specified by power dispatching by 5% for more than 2 hours; Or the voltage deviation exceeds 10% of the voltage curve value specified in power dispatching, and the duration exceeds 1 hour.

The installed capacity of power grid refers to the total capacity of all grid-connected power plants participating in the unified dispatching of power grid.

When the voltage control range is used to replace the voltage curve in dispatching, this article is also applicable if the voltage exceeds the limit (upper or lower limit) for more than 2 hours.

5.2.4 Class B general power grid accident

If it does not constitute a particularly serious power grid accident and meets one of the following conditions, it will be classified as a Class B general power grid accident.

5.2.4.1110kv and above power grid instability. (Class B general power grid accident)

Power grid instability means that two or more power sources running in parallel lose synchronization or the voltage of the power grid is unstable due to large or small interference in the same power grid. Once the power grid loses stability, this article applies whether automatic measures are taken or not, and whether stability is restored or not.

Abnormal disconnection of 500 kV (including 400 kV in Hongkong) and above power grids in 5.2.4.2 Province. 5.2.4.3110 kV and above power grid is abnormally divided into three or more pieces.

This article applies to every power grid, regardless of whether it causes load reduction. The three parts in this paper do not include the parts operated independently by local power plants with installed capacity of 50MW or less.

When one of the following situations occurs in 5.2.4.4:

(1) Unplanned shutdown of the main protection of buses, tie lines and transformers of 220kV and above, resulting in the main protection action;

(2) The running time of transmission section of power grid exceeds 1 hour;

(3) The unscheduled shutdown time of safety automatic devices such as machine cutting, load cutting, oscillation disconnection, low-frequency and low-voltage disconnection, and stabilizing devices exceeds 65,438 0.68 hours, which leads to the reduction of power grid safety level;

(4) At the prefecture (city) level and above, the dispatching automation system fails 1 hour or more, and the communication of the dispatching communication system is interrupted for more than 2 hours.

The main protection of line, bus and transformer refers to the protection device that can instantly cut off the fault of the whole line, bus and transformer.

Unplanned downtime means that the equipment is unavailable, not planned downtime.

The reduction of power grid safety level not only includes the situation that the power grid is lower than the safe operation standard, but also includes the situation that the power generation, transmission and power supply plans are forced to be revised to meet the safe operation standard of the power grid.

The failure of dispatching automation system in this paper refers to the failure (including power failure) that leads to the unavailability of the main functions of the automation master station system, which leads to the dispatcher's inability to use the system to monitor and control the power grid.

The communication interruption of dispatching communication system in this article refers to the unavailability of special dispatching communication system (including power failure), which leads to the interruption of dispatching communication between dispatching institutions and three or more plants and stations under their jurisdiction.

Other general power grid accidents in 5.2.4.5 identified as Grade B by the Company or its subsidiaries. ..

5.2.5 A Class of Obstacles in Power Grid

If it does not constitute an accident and meets one of the following conditions, it is an obstacle to the power grid.

5.2.5.1110 kV and above power grid abnormal disconnection.

The low-frequency oscillation of 5.2.5.2 220kV and above power grid lasts for more than 3 minutes.

Low-frequency oscillation refers to the continuous oscillation phenomenon in the frequency range of 0.2 ~ 2.5 Hz under small interference due to weak or negative damping of power grid.

Any section of the bus at the voltage level of 220kV and above in 5.2.5.3 Substation was forced to stop running.

This article is applicable to the power failure of the main transformer of "line transformer group" and direct connection (no bus in the middle) systems with 220kV and above.

The power quality of 5.2.5.4 power grid is reduced, resulting in one of the following consequences:

(1) The frequency deviation exceeds the following values:

The frequency deviation of power grid with installed capacity of 3000MW and above exceeds 50±0.2hz and lasts for more than 20 minutes; Or the deviation exceeds 50±0.5hz, and the duration is greater than 10 minute.

The frequency deviation of power grid with installed capacity below 3000MW exceeds 50±0.5hz and lasts for more than 20 minutes; Or the deviation exceeds 50 1 Hz, and the duration is greater than 10 minute.

(2) The voltage deviation of the voltage monitoring control point exceeds 5% of the voltage curve value specified by power grid dispatching, and the duration exceeds 1 hour; Or the deviation exceeds 10% and the duration exceeds 30 minutes.

When voltage control range is used instead of voltage curve in dispatching, this article is also applicable if the duration of voltage exceeding the limit (upper or lower limit) exceeds 1 hour.

When one of the following situations occurs in 5.2.5.5:

(1) The ultra-stable limit running time of transmission section of power grid exceeds 15 minutes;

(2) The standby active power in the real-time operation of China Southern Power Grid and provincial power grid is less than the following values, and the time exceeds 1 hour:

Reserve active power of power generation load in power grid

(%refers to the ratio of reserve to grid power generation load)

40000MW and above or 2% of the maximum single unit output in the power grid.

20000 ~ 40000 MW or 3% of the maximum single machine output in the power grid.

10000 ~ 20000 MW or 4% of the maximum single machine output in the power grid.

Less than 10000MW or 5% of the maximum single output of the power grid.

Standby active power refers to the rotating standby power on the generator side connected to the bus (including hydropower units and gas units that can be started immediately), which is used to balance instantaneous load fluctuation and prediction error.

(3) The unscheduled shutdown time of automatic safety devices such as machine cutting, load cutting, oscillation disconnection, low-frequency and low-voltage disconnection exceeds 72 hours, resulting in the reduction of power grid safety level;

(4) Unplanned shutdown of the main protection of lines, buses and transformers with 220 kV and above, resulting in unplanned operation of a single set of main protection for more than 36 hours;

(5) The dispatching automation system of dispatching institutions above the prefecture (city) level fails for more than 30 minutes, and the communication interruption of dispatching communication system exceeds 1 hour;

(6) Unplanned shutdown of communication loop leads to the change of remote trip protection and remote machine (load shedding) device from dual channel to single channel for more than 30 hours.

5.2.6 Class II Obstacles in Power Grid

The provisions of the second-class obstacles in power grid shall be formulated by the directly affiliated institutions or branches and subsidiaries of the company.

5.3 Equipment accidents and obstacles

5.3. 1 Extraordinary equipment accident

One of the following circumstances is a major equipment accident.

5.3. 1. 1 An accident occurred in the production unit, which caused damage to equipment, facilities, construction machinery and means of transport, resulting in a direct economic loss of 20 million yuan.

Construction machinery refers to large-scale lifting equipment, transportation equipment, excavation equipment, drilling equipment, tension traction equipment, etc.

Direct economic losses include the cost of replacing spare parts, materials, labor and transportation. If the equipment is damaged beyond repair, the loss cost shall be calculated according to the replacement amount of the same type of equipment. The compensation expenses of the insurance company and the residual value of the equipment cannot offset the direct economic losses.

5.3. 1.2 Fire in power production equipment and workshop, resulting in direct economic loss 1 10,000 yuan.

For the calculation method of direct economic loss, please refer to the Statistical Method of Fire Direct Property Loss (GA 185- 1998) issued by the Ministry of Public Security on June 6, 2006.

Electrical equipment is ignited by electric arc, and insulation (including insulating oil), oil system (excluding oil tank) and pulverizing system are damaged and caught fire. The above situation is listed as an internal equipment accident. If the fire damages other equipment, materials and buildings, it is designated as a fire accident in power production.

5.3.2 Major equipment accidents

It is a major equipment accident if it does not constitute a major equipment accident and meets one of the following conditions.

5.3.2. 1 In a power plant with an installed capacity of 400MW or more, the accident resulted in unplanned shutdown of two or more units and external power failure of the whole plant.

"Power plant" means a geographically independent power plant.

An accident resulted in unplanned shutdown of two or more units, including unplanned shutdown of 1 unit, and subsequent unplanned shutdown of other units due to improper handling.

External power failure of the whole plant means that the external active load of the power plant drops to zero. Although the load transferred by the power grid through the power plant bus has not stopped, it is still regarded as a power outage in the whole plant.

An accident occurred in a production plant in 5.3.2.2, which caused damage to equipment, facilities, construction machinery and means of transport, resulting in direct economic losses ranging from 5 million yuan to 20 million yuan.

A fire broke out in 5.3.2.3 electric power production equipment and workshop, resulting in a direct economic loss of 300,000 yuan.

5.3.3 Class A general equipment accident

It does not constitute a particularly serious equipment accident, but meets one of the following conditions, which is a class A general equipment accident.

5.3.3. 1 Power transmission and transformation equipment of 35kV and above power grid is forced to stop running, and power supply to users is interrupted. Class a general equipment accident

This article applies to the interruption of power supply to users, regardless of whether users are using electricity at that time.

Interrupting power supply to users does not include systematically arranging users to cut off power, limit power and adjust load.

If the automatic reclosing of the line is successful or the line and bus are ready to switch automatically, the power supply to the user will be resumed, which is not regarded as an interruption of the power supply to the user.

Unplanned shutdown of two or more units in 5.3.3.2 Power Plant resulted in external power failure.

Busbars at any voltage level of 1 10kV or above in the booster station of 5.3.3.3 Power Plant were forced to stop running.

Units of 200 MW and above in 5.3.3.4 Power Plant were forced to stop running for more than 24 hours.

Due to the damage of hydraulic equipment and structures or other reasons, the reservoir of 5.3.3.5 Hydropower Station can't normally store water, discharge water or be damaged.

An accident occurred in a production unit in 5.3.3.6, which caused damage to equipment, facilities, construction machinery and means of transport, resulting in direct economic losses of more than 500,000 yuan and less than 5 million yuan.

5.3.4 Class B general equipment accident

If it does not constitute a particularly serious equipment accident and meets one of the following conditions, it is a class B general equipment accident.

5.3.4. 1 3kV and above power generation equipment and 6kV and above power transmission and transformation equipment have the following vicious electrical misoperation:

(1) Mispull (close) isolation breaker with load;

(2) Live hanging (closing) grounding wire (grounding breaker);

(3) Close the switch (grounding breaker) (isolating breaker) with grounding wire.

5.3.4.2 50 MW and above generator sets and 35kV and above power transmission and transformation main equipment were forced to stop running due to the following human reasons.

(1) General electrical misoperation:

Wrong (missing) switch, wrong (missing) relay protection and safety automatic device (including pressure plate), wrong setting of relay protection and safety automatic device;

Issue wrong dispatching command, wrong operation mode arrangement, wrong setting value of relay protection and safety automatic device, or wrong closing and opening command;

(2) Misoperation and accidental touching of equipment by personnel;

(3) Misoperation of heat engine: the unit stops by mistake, the valve (baffle) opens (closes) by mistake, and the auxiliary machine is put into operation (stops) by mistake;

(4) Small animals touch indoor equipment;

(5) Wrong (missing) wiring of relay protection and safety automatic device;

(6) setting calculation and debugging errors of relay protection and safety automatic devices (including thermal protection and automatic protection);

(7) Monitoring negligence: personnel did not carefully monitor, control and adjust.

The main equipment for power generation, transmission and transformation refers to:

(1) boilers, steam turbines, gas turbines, water turbines, pumped storage pump turbines, generators (including excitation systems), pumped storage generator motors, cameras (static compensation devices) and frequency converters; Main hydraulic facilities and buildings (including dams, gates, pressure pipes, tunnels, surge shafts, reservoirs, canals, etc.). ).

(2) main transformers, buses, reactors, switches, transmission lines (cables), combined electrical appliances (GIS) and (2) high-voltage factory transformers of 2)220kV and above.

(3) Converter, converter transformer, AC filter, DC filter, smoothing reactor, switch, grounding electrode, series compensation equipment, etc.

The main equipment of 5.3.4.3 500 kV and above power transmission and transformation was forced to stop running for more than 1 hour.

5.3.4.4 DC transmission system is unipolar locked for more than 1 hour.

Bipolar locking of 5.3.4.5 DC transmission system.

The main equipment of 5.3.4.6 power transmission and transformation is less than 200MW, 1 10 kV ~ 220 kV, and it was forced to stop running for more than 24 hours.

5.3.4.7 220kV and above switches, voltage transformers, current transformers, lightning arresters and other capacitive devices exploded.

Tower collapse accident of 220kV and above transmission lines in 5.3.4.8.

5.3.4.9120 MVA and above transformer winding insulation damage.

5.3.4.10110 kv and above power transmission and transformation main equipment is defective, and the operation is stopped with the consent of the dispatcher, and the repair time is more than 30 days.

The "repair time" of equipment refers to the time from the time when the equipment stops to the time when the equipment is put into operation again or turned into standby.

Using spare parts to restore normal operation within 30 days can also be regarded as putting the equipment into operation again within 30 days.

5.3.4. 1 1.50 MW and above power generation main equipment is defective, and the operation is stopped with the consent of the dispatcher, and the repair time exceeds 40 days.

5.3.4. 12 power generation equipment is under any of the following circumstances:

(1) furnace explosion;

(2) The heating surface of the boiler is corroded or burned out, and the tubes or corrugated plates of the parts (water wall, economizer, superheater, reheater and preheater) that need to be replaced exceed 5% of the total weight of the tubes or corrugated plates of the parts;

(3) The pressure in the operation of the boiler exceeds 3% of the working pressure of the safety door; The overspeed of the running steam turbine reaches more than 1. 12 times of the rated speed; During the operation of the turbine, the overspeed reaches the speed of the emergency guide vane or brake;

(4) Explosion of pressure vessels and pressure-bearing thermal pipelines;

(5) 100MW and above steam turbine shaft bending, need to be straight shaft processing;

(6) 100MW and above turbine blades are broken or the flow passage is damaged;

(7) 100MW and above steam turbine water hammer;

(8) 100MW and above turbine generator, 50MW and above turbine generator, pumped storage water pump turbine generator, gas turbine and heating generator tile burning;

(9)9) 100 MW and above generator insulation damage.

5.3.4. 13 Fire broke out in power production equipment and workshop, resulting in direct economic loss of 50,000 yuan.

5.3.4. 14 Other general equipment accidents identified as Grade B by the company or its subsidiaries. ..

5.3.5 Obstacles such as equipment

If it does not constitute an accident and meets one of the following conditions, it is an equipment obstacle.

5.3.5. 10 Substation 10kV bus is abnormal or forced to stop running, resulting in less power transmission to users.

Capacitive equipment such as switches, voltage transformers, current transformers and lightning arresters over 35kV in 5.3.5.2 exploded.

5.3.5.3 generator set, 1 10kV and above power transmission and transformation main equipment were forced to stop running.

Unipolar locking of 5.3.5.4 DC transmission system.

Abnormal control system and power system of 5.3.5.5 converter (inverter) station lead to the reduction of DC transmission system.

Tower collapse accident of 35kV and above transmission lines in 5.3.5.6.

5.3.5.715 MVA and above transformer winding insulation damage.

5.3.5.8 220 kV and above lines are faulty, and automatic reclosing is successful after the switch trips.

The main equipment of power generation, transmission and substation in 5.3.5.9 was defective, and it stopped running after the consent of the dispatcher, but the equipment stopped running for more than 168 hours.

5.3.5. 10 pumped storage unit cannot pump water according to the regulation of dispatching.

5.3.5. 1 1 Equipment, facilities, construction machinery and means of transport are damaged due to obstacles of the production unit, resulting in direct economic losses of more than 654.38 million yuan and less than 500,000 yuan.

5.3.6 Equipment Class II Obstacles

The provisions on the second-class obstacles of equipment shall be formulated by the directly affiliated institutions of the company or its branches and subsidiaries.

6, accident attribution and identification

6. 1 Accident attribution under different management systems

6. 1. 1 personal, power grid and equipment accidents of institutions directly under the company system or directly under, wholly-owned and holding (including relative holding) production units are summarized as accidents of corresponding companies and units.

6. 1.2 If the property right and operation management are separated, the ownership of the accident shall be determined according to the escrow agreement; If the custody agreement is unclear, it shall be determined according to the following principles:

(1) The personal accident of employees in the operation management unit belongs to the operation management unit accident.

(2) In power grid and equipment accidents, the operation management unit is responsible for the accident.

(3) In power grid and equipment accidents, the operation management unit has no responsibility, which belongs to the property owner.

6. 1.3 Personal accidents of employees of diversified enterprises managed by company-based power supply units and companies wholly owned, controlled or managed by diversified enterprises belong to accidents of power supply units.

A variety of business units referred to in this article include units with legal person status or independent accounting.

The term "diversified enterprises managed by power generation and power supply units" as mentioned in this article refers to enterprises whose main management personnel are appointed by power generation and power supply units or hold concurrent positions in power generation and power supply units.

6. 1.4 In the work of any enterprise contracting a power generation and power supply unit, the power grid and equipment accidents of the power generation and power supply unit are all accidents of the power generation and power supply unit.

6.2 Accident identification involving multiple units

6.2. 1 When an accident occurs in one generator and power supply unit, another generator and power supply unit in the power grid expands the accident due to the failure of this unit, and the latter one or several units are each designated as an accident. The directly affiliated institutions, branches and subsidiaries of the company that manage these power generation and power supply units are counted as an accident.

6.2.2 Transient fault of transmission line, which is caused by the fault of substation equipment such as relay protection or switch, is regarded as an accident of the unit under the jurisdiction of substation equipment; If there is a permanent fault in the transmission line, no matter whether the substation equipment is faulty or not, it should be regarded as an accident of the line unit under its jurisdiction.

6.2.3 Two or more units are responsible for the maintenance of a line. When the fault trip of the line constitutes an accident, if each unit fails to find the fault point after inspection, it is designated as an accident.

Two or more units are responsible for the maintenance of a line. After the line trips, if one party provides the fault recorder (or the record of the fault range finder, the same below), and the calculated fault point is on the other party, but the other party does not provide the fault recorder, although no fault point is found in the on-site inspection of both parties, it is determined that the party without the fault recorder has an accident.

If one party provides a fault recorder and the calculated fault point is on its own side, and the other party has a wave recording device but does not provide a fault recorder, then both parties will be considered as accidents.

When there is a contradiction between the calculated results of oscillogram analysis of both sides, both sides will be designated as accidents.

6.2.4 When the power generation and supply equipment runs abnormally and constitutes an accident due to the fault of the staff of the power grid dispatching organization, such as: wrong dispatching command, improper arrangement of operation mode, wrong setting of protection and other fixed values, misoperation, accidental equipment collision, monitoring failure, etc. , scheduling mechanism should be regarded as an accident. If the power generation and supply unit is also at fault, it should also be considered as an accident.

6.3 Accident identification meeting multiple accident conditions at the same time.

6.3. 1 If the accident meets the conditions of power grid accident and equipment accident at the same time, the accident with high grade shall be selected according to different grades of accidents; The same level of accidents, the principle of choosing power grid accidents.

An accident conforms to both Class A general power grid accidents and Class A general equipment accidents, so Class A general power grid accidents are selected.

If an accident conforms to both A-level general equipment accident and B-level general power grid accident or B-level general equipment accident, the A-level general equipment accident shall be selected.

6.3.2 Power grid or equipment accidents accompanied by personal accidents shall be identified as personal accidents, power grid accidents or equipment accidents respectively.

6.4 Identification of multiple accidents caused by the same reason:

6.4. 1 When a line has multiple accidents within 24 hours due to the same reason, it can be considered as an accident.

6.4.2 When multiple lines and substations of the same power supply unit trip and stop due to natural disasters, such as icing, wind disaster, flood, earthquake, debris flow, fire and lightning damage, it can be regarded as an accident.

When multiple lines and substations of multiple power generation and power supply units directly under the same company trip due to the same natural disaster and power generation equipment stops, these power generation and power supply units shall each identify an accident; The directly affiliated institutions, branches and subsidiaries of the company that manage these power generation and power supply units are counted as an accident.

6.4.3 Due to the poor quality of coal (oil) and wet coal in the power plant, it can be regarded as an accident that the boiler stops several times during the duty time of an operation shift and the output drops.