Quick system rebuilding method of large area power grid blackout

A system reconstruction and power grid technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of complex factors in the safe and stable operation of the power system, system chain reactions, system power outages, etc., to improve the ability to quickly respond to major accidents effect of ability

Inactive Publication Date: 2013-04-03
STATE GRID JIBEI ELECTRIC POWER CO LTD TANGSHAN POWER SUPPLY CO
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AI Technical Summary

Problems solved by technology

[0003] With the development of large power grids, the scale of power grid operation is getting larger and larger, and the potential factors that induce large-scale power outages in the power grid are becoming more and more complex, and the requirements for reliability, operation technology and management level are higher. The risk of large-scale power outages is also increasing; although the planning, design and operation of the power system have taken many measures in terms of power system relay protection and safety automatic devices to improve system security; however, due to the impact on the safety and stability of the power system The operation factors are complex, and some situations are difficult to predict, which may trigger a chain reaction of the system, eventually leading to a large-scale power outage of the system

Method used

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  • Quick system rebuilding method of large area power grid blackout
  • Quick system rebuilding method of large area power grid blackout
  • Quick system rebuilding method of large area power grid blackout

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, using the "black start mode of the water turbine set" recovery:

[0026] 1) The dispatcher urgently opened the 110kV double-circuit line of the Xingxi line; after the main network was completely shut down, the power was sent to the Qianxi substation through the 110kV lines of Xihei and Xingxi, and the 220kV bus was sent back through the main transformer of Qianxi. Start the Fengrun thermal power unit through Qianxi-Jiangjiaying-Changzhuang-Zhezhoushan;

[0027] 2) The dispatcher urgently opened the 110kV double-circuit line of the Xingxi line; after the main network was completely stopped, the power was sent to the Qianxi substation through the 110kV lines of Xihei and Xingxi, and the 220kV bus was sent back through the main transformer of Qianxi. Pass through Qianxi-Yangle-Dengxinfang power plant units.

Embodiment 2

[0028] Embodiment 2, using the "black start mode of the gas unit" to recover:

[0029] Use Qian'an Gas Unit

[0030] 1) The local dispatch ordered Qian'an Gas Unit 1 to start up;

[0031] 2) Charge to the Kouzhuang substation through the 110 kV fuel buckle line;

[0032] 3) Send power to the 220 kV busbar of Yangle Substation through the main transformer of Kouzhuang substation and the 220 kV Lekou line;

[0033] 4) Charge to Yinanfu Station through the 220 kV Leyi Line;

[0034] 5) Charge to Haozhuang Station through the 220 kV Yihao Line;

[0035] 6) Charge to Jiangjiaying Station through 220kV Jianghao Line;

[0036] 7) Charge to Changzhuang Station through 220 kV Jiangchang Line;

[0037] 8) Charge to the axle mountain station through the 220 kV regular train line;

[0038] 9) Send to Tangfeng Thermal Power 220 kV busbar through 220 kV Feng Che Line 1;

[0039] 10) Start two 300,000-kilowatt units through Tangfeng Thermal Power's 220 kV high-voltage start-up and bac...

Embodiment 3

[0041] Embodiment 3, using "island black boot mode" recovery:

[0042] "Parallel" recovery means using Tangshan's 110kV local power plant to form an isolated grid as a black-start power supply for the grid;

[0043] When the main network collapses, the low-key watchman quickly disconnects a certain power plant and the main station network line, so that the power plant and its load are balanced, and the isolated network operation is maintained; then the generator of the large power plant is used as a starting power supply through the connection line. Gradually restore power to the grid;

[0044] Xijiao Thermal Power Plant

[0045] 1) The dispatcher urgently opened the Hanxi double-circuit line, and the Xijiao Power Plant carried the 110 kV load of the Southwest Suburb and Beigang Stations, and the Xijiao Power Plant operated in an isolated network. After the main grid is completely shut down, power will be sent to the Chezhengshan substation through the 110kV line in the Sout...

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Abstract

The invention relates to a quick system rebuilding method of large area power grid blackout and belongs to the technical field of power grid. The technical scheme includes that when the recovery voltage of the provincial power grid fails, the local power grid black start program development include: first, cooperating with the provincial power grid black start program is reflected in the load recovery of the provincial-level high-voltage grid that is a timely load distribution for the voltage recovered provincial power grid to the next level substation to ensure the voltage and frequency stability of the provincial power grid, and second, utilizing the local self-start small hydro or the thermal power plant island operation or the small power grid operation to gradually recover the important load of the local power grid to start all local units in the local to recover the power supply of the entire local power grid. According to the quick system rebuilding method of large area power grid blackout, an orderly recovering or rebuilding of a new stable operation mode can be found as soon as possible after the large area power grid blackout to provide scientific, intuitive and operable decision-making reference to the operation department, so that the important departments power supply can be quickly recovered and the capability of the power grid to quickly respond to major accidents can be improved.

Description

technical field [0001] The invention relates to a method for quickly completing system reconstruction after a large-area power failure of a power grid, and belongs to the technical field of power grid power supply. Background technique [0002] The technical terms involved in the present invention: large-scale power outages refer to large-scale blackouts caused by the impact of severe natural disasters or major accidents on power production, which cause chain reactions and cause regional power grids, provincial power grids, or important central city power grids to reduce supply loads. Blackout event. In extreme cases, after the power grid is completely shut down, without the help of external systems, through the start-up of units with self-starting capabilities, other units without self-starting capabilities are driven, and the recovery range of the system is gradually expanded, and the entire system is finally restored, which is called "black start". ". [0003] With the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/46
CPCY02A30/60
Inventor 张西术钱玉春尚文清姬志刚李耐心
Owner STATE GRID JIBEI ELECTRIC POWER CO LTD TANGSHAN POWER SUPPLY CO
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