Intelligent self-healing monitoring method of extra high voltage power network

An ultra-high voltage and power grid technology, applied in the field of transformer and power distribution, can solve problems such as the self-healing realization process of ultra-high voltage power grid that has not been reported yet, and achieve the effect of avoiding further expansion of the fault range, accurate and reliable identification, and solving self-healing problems.

CN101944777BActive Publication Date: 2013-07-24SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-07-24

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Abstract

The invention discloses an intelligent self-healing monitoring method of extra high voltage power network, belonging to the field of electric transformer and distribution. The invention uses the self-healing monitoring method that the power network control center collects the fault information, estimates the fault point according to the action information, judges the fault point according to the visualization technology, and starts the automatic recovery project. The method solves the self-healing problem of extra high voltage power network, performs the prevention and correction control, andmakes the dispose strategy based on the information quickly, thereby avoiding the cascade trip caused by load transfer, realizing the safe and stable addition control of the power network from the entire network perspective, and replenishing the disadvantages of area and in situ emergency control measure. Aiming at the specific characteristics in the aspects of running, dispatching and managing of the extra high voltage power network, the method can collect and use the information more comprehensive, and make the dispose strategy quickly to earn the time for the avoiding of cascade trip caused by load transfer, thereby avoiding the further enlargement of fault coverage due to wrong dispose, and solving the self-healing problem of the extra high voltage power network.
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Description

technical field

[0001] The invention belongs to the field of power transformation and distribution, and in particular relates to a fault processing system or method specially suitable for super-high voltage grid network fault monitoring. Background technique

[0002] In recent years, large-scale power outages have occurred in domestic and foreign power systems for many times, and these accidents have aroused people's high attention to the safety of the power grid.

[0003] In order to end this kind of large-scale, major-impact, grid-level blackout, the United States, Western Europe and other countries have begun to build "smart" grids, and my country's State Grid Corporation has also formulated a grand plan to build a "strong and smart" grid.

[0004] The so-called "smart grid" refers to the intelligence of the power grid. It is based on an integrated, high-speed two-way communication network, through advanced sensing and measurement technology, advanced equipment technology...

Examples

Embodiment

[0097] Taking a 220kV power grid control center in East China Power Grid as an example, assuming that the center only controls Station A and Station B, the main wiring diagram of the primary system of Station A is as follows figure 2 As shown, Station B is connected to Station A through lines 4175 and 4176.

[0098] After the fault occurs, the focus is on how the power grid control center identifies the fault, isolates the fault point, and restores the fault of the power grid.

[0099] Assuming that there is no grid stability problem in this fault, and assuming that the 220kV grid connection is relatively compact, after a fault disconnects a line, the power supply to the load will not be interrupted.

[0100] ① Fault occurrence:

[0101] Before the fault occurs, the switch position of Station A is as follows: figure 2 As shown, the black in the figure indicates that the switch is in the close position, and the switch in the close position indicates that the circuit is in t...