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Power grid quick recovery method adapted to extreme weather condition

A technology of extreme weather and rapid recovery, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of social and economic loss of power accidents, low frequency, etc., to improve the self-healing plan and reduce the risk of secondary accidents. Effect

Inactive Publication Date: 2017-05-31
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0004] For power systems, disastrous weather will have a greater impact on safe operation, and the occurrence of disastrous weather often has a certain degree of randomness, and sudden changes in climate can generally be associated with extreme weather events. Therefore, for extreme severe weather events The understanding of climate change is mainly based on the following three characteristics: first, under specific regions or time conditions, the occurrence frequency of this type of climate is relatively low; second, it has a large intensity value; losses or cause more serious electrical accidents

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  • Power grid quick recovery method adapted to extreme weather condition
  • Power grid quick recovery method adapted to extreme weather condition
  • Power grid quick recovery method adapted to extreme weather condition

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Embodiment Construction

[0056] The present invention will be further described in detail below in conjunction with the drawings.

[0057] A method to adapt to the rapid restoration of the power grid under extreme weather conditions, such as figure 1 The method flow chart shown, the specific steps include

[0058] Step 1. Establish a branch model under extreme weather conditions, and set branch weights in consideration of the charging power of the branch, the capacity of the high-voltage reactor, the start-up time of the branch, and the degree of influence under extreme weather conditions;

[0059] Step 2. Establish a generator model that considers the impact of extreme weather, set the weight index of the influence of severe weather on the generator, and define the generator set that survives the accident or can start automatically as a black start generator set;

[0060] Step 3. The Dijkstra algorithm is used to search for the optimal starting path of all generators, and then after comprehensive considerati...

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Abstract

The invention belongs to the technical field of power system operating and control, and particularly relates to a power grid quick recovery method adapted to an extreme weather condition. The power grid quick recovery method comprises the steps of establishing a branch model in the extreme weather condition; establishing a generator model considering extreme weather influence; searching optimal starting paths of all generators by adopting a dijkstra algorithm; determining the generator with the highest priority as the target generator; setting a target function, and converting the target function into a differentiable target function with a constraint condition; solving the differentiable target function by adopting a primal-dual interior point optimal power flow algorithm; performing transient state verification on the starting paths of the generators; and putting the started generators into a started generator group, changing the weight values of the started circuits into 1 / 10 of the weight values before starting, and selecting the final starting scheme according to different emphasis points in a network recovery process. By adoption of the power grid quick recovery method, correct decision-making analysis of an operating planner can be assisted; and meanwhile, risk of secondary accidents in the self-healing process can be lowered.

Description

Technical field [0001] The invention belongs to the technical field of power system operation and control, and in particular relates to a method for adapting to the rapid restoration of a power grid under extreme weather conditions. Background technique [0002] Large-scale grid interconnection is an inevitable trend in the development of power systems worldwide. my country’s power system is developing rapidly, power loads are increasing sharply, ultra-high voltage AC and DC transmission lines are completed and put into operation, and the dynamic characteristics of the power grid are becoming more and more complex. It is precisely because of the interconnection characteristics of the power system and the utility of power that grid accidents spread quickly, have a large impact range, and have serious consequences. Once a large-scale blackout occurs, the production and construction of the national economy and the living order of the people will be severely affected, not only causin...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06Q10/04G06Q50/06
CPCG06Q10/047G06Q50/06H02J3/00H02J2203/20Y04S10/50
Inventor 罗钢刘崇茹徐伟钱峰杨银国段秦刚谭伟易杨胡海洋
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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