Electrical Engineering and Automation Paper Template 20 10-04-22 14:22 The main contents of the paper include
1.
2. English translation
3. Original data
4. Calculation sheet
Step 5 explain
Step 6 refer to
7. Cartography
Graduation thesis on primary or secondary design of power grid system in simple area
Directory:
Chapter one. design basis
Chapter two. source
Chapter III Design of Access System
Chapter IV Design of Local Power Supply System
Chapter V Selection of Main Transformer (including tap selection or regulation mode design)
Chapter VI Main Wiring Design (including Power Design)
Chapter VII Calculation of Short-circuit Current
Chapter VIII Equipment Selection
Chapter 9 Configuration of Relay Protection
[text]:
Chapter one. design basis
According to the graduation design of electrical engineering and automation specialty in XX University
Chapter two. source
In order to meet the needs of industrial and agricultural production development, it is decided to build a new 1 10KV Yanbei substation with the approval of the superior.
I. Design information
(1) See Table 3 for the load data, lines and synchronization rate of each voltage level of the new Yanbei substation.
The annual load growth rate of Yanbei Substation is 5%, so the five-year development plan should be considered.
Total load of substation s110 = k1(S35+s10) (1+5%).
(2) There are two power receiving schemes for the new Yanbei substation: (1) slave 1 10K.
The power receiving distance of Yancheng East Suburb Substation is 30KM (this project is to be completed); (2) From 1 10KV Guannan Substation, the receiving distance is 35KM (not done in this project), and the wiring diagram of the power system is as shown in figure 1.
(3) See table 1, 2, 3, 4 and 5 for the technical parameters of main equipment such as power system factories, substations and transmission lines.
(4) Other original materials:
Address: flat terrain, soil field resistivity1.5×10Ω? Cm, the site is higher than the highest flood level once in a hundred years. Climate of the address, average temperature 15℃, maximum temperature 35℃ and minimum temperature-15℃.
Transportation: Close to the national second-class highway, 0.4 km into the expressway.
Water source: there is a river near the substation, which is convenient for suppliers and has sufficient water source.
Two. Design content
(a) access system design:
Determine the loop number and conductor section of the transmission line connected to the system.
(2) Design of regional power supply system:
According to the nature of regional load and power supply distance, the number of power supply lines and conductor section are determined.
(3) Determine the number, capacity, model and specification of main transformer in substation through technical and economic comparison.
(4) Through voltage calculation, choose the main transformer tap or voltage regulation mode.
(5) According to the determined main transformer scheme and the number of incoming and outgoing lines, the main wiring of the proposed substation is determined through technical analysis and demonstration.
(6) Determine the power scheme of the substation to be built (the number, model, capacity and self-use power connection type of transformers used, and the power load used shall be calculated according to the substation capacity of 0. 1%).
(7) Selection of electrical equipment
1. Select electrical equipment and relay protection setting, and calculate three-phase short-circuit current.
2. Select the primary electrical equipment of the substation (circuit breaker, disconnector, PT, ct, bus, lightning arrester and neutral grounding equipment).
(8) Relay protection
According to the requirements of relay protection, the relay protection configuration of each element in substation is determined.
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[Abstract]:
This design specification is written according to the requirements of graduation design task book, combined with books such as electrical equipment, transient analysis of power system, steady analysis of power system, relay protection, graduation design guide of electrical engineering, etc. It is the summary of my three-year study in university.
Over the past three years, under the guidance of my teacher, I have learned a lot of knowledge, which has greatly promoted my study career and social practice life. Let me constantly challenge myself and enrich myself, not only with great ideological gains, but also with qualitative breakthroughs in knowledge. At the same time, it also pays attention to the application of the learned knowledge in practical work, which enhances the ability to deal with and analyze problems.
The newly-built 1 10KV substation designed this time is based on the principle of providing sufficient power for all sectors of the national economy, meeting the power demand of users to the maximum extent, ensuring the reliability of power supply, ensuring good power quality and improving the operation economy of power system. Aiming at the design of access system: determine the number of loops and conductor section of transmission line in access system. Design of regional power supply system: according to the nature of regional load and power supply distance, determine the number of power supply lines and conductor section. Through technical and economic comparison, the number, capacity, model and specification of main transformer in substation are determined. Through voltage calculation, the main transformer tap or voltage regulation mode is selected. According to the determined main transformer scheme and the number of incoming and outgoing lines, the main wiring of the proposed substation is determined through technical analysis and demonstration. Determine the power scheme of the substation to be built (the number, model, capacity and self-use power connection type of transformers used, and the power load used is calculated according to 0. 1% substation capacity). Selection of electrical equipment: select electrical equipment and relay protection setting, and calculate three-phase short-circuit current. Select the primary electrical equipment of the substation (circuit breaker, disconnector, PT, ct, bus, lightning arrester and neutral grounding equipment). Relay protection according to the requirements of relay protection, determine the relay protection configuration of each element in the substation.
foreword
This design description is the basis of graduation design homework, combined with the books such as Electrical Equipment, Steady State Analysis of Power System, Relay Protection, and Graduation Design Guide for Electrical Engineering, which is my summary of three years in college.
Over the past three years, relying on the guidance of teachers, I have gained a lot of knowledge, promoted my study, work and life, constantly challenged me and enriched me, and not only have I gained knowledge myself. Pay attention to it at work.
The purpose of this design of 1 10KV substation is to provide sufficient power for various departments of the country, ensure power supply, ensure power supply quality and promote the economy of power system. Design of this operation system (determine the transmission line loop and line segment of the operation system); Determine the number, capacity, model and specification of the main transformer of the substation; Calculation of voltage, selection of tap position, economic and technical comparison; Determine the power supply scheme of substation; Calculating three short-circuit currents; Select electrical equipment (circuit breaker, disconnector, PT, CT, bus, lightning arrester, grounding device) and relay protection device to determine the relay protection configuration of substation.
[References]:
1. Curriculum design resources for electrical part of power plant. Hydraulic and electric press
2. Power system design equipment reference, Hohai University Press
3. Steady-state analysis of power system
4. Transient analysis of power system. Hydropower publishing house
5. Power Engineering Design Manual Hydropower Northwest Electric Power Design Institute
6. Hydraulic press for electrical part of power plant
7. Power system relay protection principle
8. Power System Curriculum Design and Graduation Reference, China Electric Power Press.
Your topic is too broad. You can enter an introduction to electrical engineering online, find relevant information, and then organize and select materials reasonably according to your own ideas. I'm really sorry, can someone else write so many words instead of you? You can only give a rough idea. The key is to write it yourself.