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Electric power system partition standby configuration method based on spectral clustering

A technology of power system and configuration method, which is applied in the direction of constraint-based CAD, circuit devices, and power generation prediction in AC networks, and can solve problems such as difficulty in dealing with system transmission congestion and lack of flexibility

Pending Publication Date: 2021-03-16
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD HANGZHOU POWER SUPPLY CO +2
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional power system zoning methods are mainly based on geographic location or dispatcher experience, which lacks flexibility and is difficult to deal with transmission congestion under different operating states of the system

Method used

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  • Electric power system partition standby configuration method based on spectral clustering
  • Electric power system partition standby configuration method based on spectral clustering
  • Electric power system partition standby configuration method based on spectral clustering

Examples

Experimental program
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Effect test

Embodiment

[0145] Using the present invention to carry out partition backup configuration scheduling for the 30-node system, the topology of the 30-node system is as follows figure 2 shown. The system scheduling cycle is set to one day, that is, 24 hours, and the regional reserve capacity is set to 10% of the predicted load in the region and 15% of the predicted output of wind power generators. The parameters of the 30-node system generators are shown in Table 1:

[0146] Table 1 generator set parameters

[0147]

[0148] System forecast load data, actual load data such as image 3 As shown, the predicted output data of the fan and the actual output data of the fan are as follows Figure 4 shown.

[0149] Using the forecasted load and forecasted fan output of each period to calculate the easy-to-congestion lines, calculate the PTDF matrix of the easy-to-congestion lines, use the spectral clustering algorithm to divide the nodes, and establish the spare partitions for the correspon...

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Abstract

The invention discloses an electric power system partition standby configuration method based on spectral clustering. The method comprises the following steps: selecting a plurality of easy-to-block lines according to the operation of the power system, and calculating a power transfer distribution factor matrix of the easy-to-block lines; calculating a node similarity matrix according to the powertransfer distribution factor matrix; calculating an adjacent matrix and a degree matrix; calculating and standardizing a Laplace matrix, solving feature values and feature vectors, and extracting andestablishing a feature vector matrix; standardizing line by line to obtain a new feature matrix, and clustering each line to obtain a standby partition result; and establishing a partition standby joint optimization scheduling model, solving to obtain a scheduling result, and controlling each node to work according to the scheduling result to realize partition standby configuration. According tothe method, the influence of the active change of each node on the line power flow in the system operation process is considered, the utilization rate of reserved standby is improved, and the effective operation of the system is realized under the condition of ensuring the system safety.

Description

technical field [0001] The invention belongs to a power system configuration control method in the field of power system reserve capacity distribution and dispatching, and in particular relates to a power system partition backup configuration method based on spectrum clustering. Background technique [0002] In order to ensure the real-time balance of power supply in the power system and cope with uncertain factors such as load fluctuations and generator failures, the system needs to be equipped with sufficient reserve capacity. In my country's current dispatching model, due to the transmission capacity constraints of transmission lines, backup resources may not be able to effectively transmit to power shortage areas. Reserve capacity aggravates line backup transmission congestion and affects the reliable operation of the system. Set up partition backup, place the easy-to-congestion line at the partition boundary, and provide the backup demand in the partition as much as pos...

Claims

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Application Information

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IPC IPC(8): G06F30/27G06Q10/04G06Q10/06G06Q50/06H02J3/00H02J3/06H02J3/46G06F111/04G06F111/06G06F113/04
CPCG06F30/27G06Q10/04G06Q10/06312G06Q10/0637G06Q50/06H02J3/003H02J3/004H02J3/06H02J3/46G06F2111/04G06F2111/06G06F2113/04H02J2203/20H02J2300/28
Inventor 倪秋龙李祥朱炳铨唐剑徐立中董航黄佳斌苏宜靖黄启航陈鸿鑫郭超丁一
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD HANGZHOU POWER SUPPLY CO
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