An Auxiliary Decision-Making Method for Large Power Grid Emergency Control Based on Dynamic Partitioning

A technology of dynamic partition and emergency state, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., and can solve problems such as blackout accidents and chain failures

Active Publication Date: 2019-01-25
NARI TECH CO LTD +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the power grid enters an emergency state, if the control measures are not implemented in time, it may cause chain failures and cause blackouts

Method used

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  • An Auxiliary Decision-Making Method for Large Power Grid Emergency Control Based on Dynamic Partitioning
  • An Auxiliary Decision-Making Method for Large Power Grid Emergency Control Based on Dynamic Partitioning
  • An Auxiliary Decision-Making Method for Large Power Grid Emergency Control Based on Dynamic Partitioning

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Embodiment 1

[0073] An embodiment of the present invention, its steps are as figure 1 Shown:

[0074] figure 1 In step 1, it is described that according to the operation mode of the power system and the corresponding models and parameters, online calculation is performed to obtain the power flow data of the system after the expected failure, and then enter step 2);

[0075] figure 1 What described in step 2 is, 2) the voltage safety margin is less than the set threshold value η v,thr1 and the expected voltage safety margin after the fault is less than the set threshold η v,thr2 The busbars of are added to the off-limit busbar set and the busbar set to be controlled respectively, and the overload safety margin is less than the set threshold η p,thr1 and the overload safety margin after expected failure is less than the set threshold η p,thr2 The devices are added to the overloaded equipment set and the equipment to be controlled set respectively, among which the off-limit bus set and t...

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Abstract

The present invention discloses a dynamic partition-based large power grid emergency state control auxiliary decision method, and belongs to the electric power system operation control technology field. The method of the present invention is characterized by automatically obtaining the feasible dynamic partition schemes, and aiming at the plurality of feasible schemes, quantitatively evaluating an index system according to the dynamic partition, thereby obtaining an optimal control scheme. The method cooperatively considers the economy, the reliability and the safety, gives out the optimal dynamic partition control scheme rapidly and accurately aiming at a current state and the single and various emergency states of a power grid under the preconceived faults, can give out the correct auxiliary decision suggestions, and guarantees the safe and stable operation of the power grid.

Description

technical field [0001] The invention belongs to the technical field of power system operation control, and in particular relates to an auxiliary decision-making method for emergency state control of a large power grid based on dynamic partitioning. Background technique [0002] With the completion and operation of UHV AC and DC lines, the pattern of large-capacity inter-regional power transmission has gradually formed. Inter-regional interconnection of power grids further enhances the dynamic coupling characteristics between regional power grids, and local power grid failures have a greater impact on the safety and stability of regional power grids. When the power grid enters an emergency state, if the control measures are not implemented in time, it may cause chain failures and cause blackouts. [0003] At present, the operation control methods of the power grid are mainly classified into two categories in terms of implementation methods, one is to dynamically adjust the p...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCG06Q50/06H02J3/00H02J3/001
Inventor汤奕蔡明明任先成徐泰山鲍颜红夏小琴严明辉赵红明黄晓红王丽贾爱飞魏旭锋
OwnerNARI TECH CO LTD