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Method and system for optimizing starting sequence of power generators

A start-up sequence and optimization method technology, applied in the electric power field, can solve problems such as failure to find, reduce efficiency of generator start-up sequence, optimal power transmission path is not optimal, etc.

Active Publication Date: 2013-02-27
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large number of generators that need to be started after a blackout, the number of times Dijkstra’s algorithm needs to be called is correspondingly large, which greatly reduces the efficiency of determining the starting sequence of generators; and the selection of target generators and the optimal delivery The selection of electrical paths is independent, which will also cause the selected target generator and the optimal power transmission path to be not optimal, or after expanding the target area or backtracking, no feasible solution may still be found, which also greatly Reduced efficiency of determining generator start sequence

Method used

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  • Method and system for optimizing starting sequence of power generators
  • Method and system for optimizing starting sequence of power generators

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Embodiment 1

[0033] see figure 1 As shown, it is a schematic flow chart of an embodiment of the method for optimizing the generator starting sequence of the present invention, which includes steps:

[0034] Step S101: Determine the shortest weighted path from the electrified network to each target generator and the parent node information of each node in each of the shortest weighted paths, and determine the weight of each of the shortest weighted paths;

[0035] Step S102: Determine the comprehensive priority index of each of the target generators according to each of the weights and the preset start-up capacity and ramp rate of the corresponding target generator;

[0036] Step S103: taking the target generator with the smallest comprehensive priority index as the starting target;

[0037] Step S104: Determine the shortest weighted path of the starting target according to the parent node information;

[0038] Step S105: Solve the starting target and the system composed of the shortest w...

Embodiment 2

[0063] According to the generator starting sequence optimization method of the present invention, the present invention also provides a generator starting sequence optimization system, which includes: a search module 201, an index determination module 202, a target determination module 203, a path determination module 204, and a solution module 205 , judging module 206, merging module 207, wherein:

[0064] A search module 201, configured to determine the shortest weighted path from the electrified network to each target generator and the parent node information of each node in each of the shortest weighted paths, and determine the weight of each of the shortest weighted paths;

[0065] An index determination module 202, configured to determine the comprehensive priority index of each of the target generators according to each of the weights and the preset start-up capacity and ramp rate of the corresponding target generator;

[0066] The target determination module 203 is con...

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Abstract

The invention provides a method and a system for optimizing a starting sequence of power generators. The method comprises the steps as follows: determining father node information of nodes in shortest weighted paths and weight values of the shortest weighted paths; determining comprehensive priority indexes of target power generators respectively according to the weight values and the starting capacity and the climbing rates of the target power generators; taking the target power generator with the minimal comprehensive priority index as a starting target; determining the shortest weighted path of the starting target through the father node information; solving a system comprising the starting target and the shortest weighted path corresponding to the starting target as well as an electric network by the primal-dual interior point optimal power flow; judging if the optimal power flow of the system is converged; and if so, incorporating the starting target and the shortest weighted path corresponding to the starting target into the electric network. According to the method, the optimal power transmission path is prevented from being repeatedly acquired, and the efficiency of acquiring the starting sequence of the power generators after blackout is greatly improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method and system for optimizing a generator starting sequence. Background technique [0002] The generator starting sequence optimization method after a blackout is generally based on the Dijkstra algorithm. The Dijkstra algorithm is a typical single-source shortest path algorithm based on network topology and branch weights. It is used to calculate a node to The shortest weighted path to all other nodes. However, at present, the general practice of the optimization method for generator starting sequence after a major blackout using the Dijkstra algorithm as the path search algorithm is: first select the target area to be started; then screen the unstarted generators in the area to determine the target Generator; then call the Dijkstra algorithm to search for the optimal power transmission path of the target generator, and verify the power transmission scheme: when th...

Claims

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Application Information

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IPC IPC(8): H02J3/38
Inventor 张文峰刘崇茹李嘉龙邓应松李剑辉马煜华卢恩王宁龙霏
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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