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A cluster partitioning method for high-density distributed power generation

A distributed power generation, high-density technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., to achieve easy partition management, improve comprehensiveness and scientific effect

Active Publication Date: 2022-07-22
NR ELECTRIC CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the above content, it can be seen that the existing cluster division methods are mostly based on a single indicator, but in actual situations, the influence of multiple factors and indicators often needs to be considered

Method used

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  • A cluster partitioning method for high-density distributed power generation
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  • A cluster partitioning method for high-density distributed power generation

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Experimental program
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Embodiment example 2

[0077] S1) Calculate distributed generation cluster voltage / power sensitivity

[0078] figure 2 It is a distributed power generation cluster system. The capacity of distributed power supply installed in its nodes is shown in Table 1.

[0079] Table 1. Node Distributed Power Installation Capacity

[0080]

[0081]

[0082] Based on the power flow calculation, the system node voltage and power are obtained; the Jacobian matrix in the power flow calculation is inversely transformed to form a voltage / power sensitivity matrix. The calculation results of the voltage active sensitivity are shown in Table 2, and the calculation results of the voltage reactive sensitivity are shown in Table 3.

[0083] Table 2. Voltage Active Sensitivity

[0084] node 1 2 3 4 5 6 7 8 9 10 11 1 0.43 0.68 0.60 0.75 0.64 0.42 0.47 0.26 0.31 0.88 0.47 2 0.68 0.75 0.48 0.51 0.84 0.45 0.41 0.66 0.56 0.91 0.31 3 0.60 0.48 0.51 0.47 0.87 0...

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Abstract

The present invention provides a cluster partitioning method for high-density distributed power generation, including: step 1, constructing voltage active power sensitivity and voltage reactive power sensitivity of a distributed power system under different working conditions; step 2, based on distributed power generation Calculate the electrical distance based on the cluster voltage / power sensitivity; step 3, select key nodes of the distributed power generation cluster according to the voltage / power sensitivity; step 4, divide the distributed power generation cluster based on the second electrical distance. The method also considers the coupling connection degree of node distance in the power grid topology and the voltage sensitivity after the distributed power supply is connected, which improves the comprehensiveness and scientificity of the optimization results.

Description

technical field [0001] The invention belongs to the field of distribution network control partitioning, and in particular relates to a cluster partitioning method for high-density distributed power generation. Background technique [0002] Power cluster division can be used to simplify grid planning, operation monitoring and dispatch control, and has a wide range of engineering applications. With the distributed access of high-density renewable energy, the overvoltage and power reversal problems faced by the distribution network have become more and more serious. The traditional clustering method based on a single criterion has been unable to meet the planning and operation requirements of the distribution network. [0003] The research of clustering method can be divided into two aspects, one is the criterion and index system of clustering, and the other is the effective algorithm and realization of clustering. The current classification criteria are mostly based on the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/381
Inventor 张代新毛建维潘安伟厉超马骏丁倩储召云江锐江涛
Owner NR ELECTRIC CO LTD