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Power distribution network PMU optimal configuration method based on customized inheritance

A technology for optimizing configuration and distribution network, applied in the field of electrical information, can solve problems such as the difficulty of fully laying PMUs and the high cost of PMUs, and achieve the effect of improving the optimization effect and increasing the number

Active Publication Date: 2020-04-17
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of PMU is relatively high, and it is difficult to fully lay PMU in the short term.

Method used

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  • Power distribution network PMU optimal configuration method based on customized inheritance
  • Power distribution network PMU optimal configuration method based on customized inheritance
  • Power distribution network PMU optimal configuration method based on customized inheritance

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Experimental program
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Embodiment Construction

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

[0035] This embodiment proposes a distribution network PMU optimization configuration method based on custom genetics, including the following steps:

[0036] step 1:

[0037] Considering various topological structures in the network, the objective function is to maximize the average number of nodes, and its calculation formula is:

[0038]

[0039] In the formula, N is the number of nodes in the network; i is the node number; R is the number of network topology structures considered, c is the topology number; g ci is the observability of node i under the c-th topology. when g ci = 1, node i is an observable node; when g ci = 0, node i is an unobservable node.

[0040] Among them, g ci It can be expressed as:

[0041]

[0042] In the formula, m ci In the c-th topol...

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Abstract

The invention discloses a power distribution network PMU optimal configuration method based on customized inheritance. The method comprises the steps: taking a fixed PMU number as a constraint, considering the topological change condition of a power distribution network, and constructing an optimal configuration model taking the maximum average observable node number as a target; introducing measurement redundancy in the model by updating a target function; introducing a zero injection node, node injection power and branch power flow data into the model; and finally, solving the model by usinga customized genetic algorithm to obtain a PMU optimal configuration scheme. According to the method, the fixed PMU number is taken as the constraint, the topological change condition of the power distribution network is considered, the optimal configuration model and the solving method with the maximum average observable node number as the target are constructed, the configuration sequence of all PMUs can be determined at the same time according to the obtained PMU optimal configuration scheme, and engineering construction is effectively guided.

Description

technical field [0001] The present invention relates to the field of electrical information, in particular to a method for optimal configuration of a distribution network synchrophasor measurement unit (PMU) based on customized genetics. Background technique [0002] The large-scale access of distributed power, electric vehicles, flexible and controllable loads, etc. has changed the planning and operation of the power distribution system, and the distribution network is developing towards a flexible, reliable, efficient and intelligent direction. Improving the measurability, observability, and controllability of the distribution network is an important way to intelligentize the distribution network. The PMU can collect the voltage phasor of the node where it is located and the branch current phasor flowing through the node at high frequency. In the process of large-scale application of PMU, in addition to satisfying applications such as fault diagnosis, parameter identifica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G01R19/00
CPCH02J3/00G01R19/00Y04S10/22Y02E40/70Y02E60/00
Inventor 孔祥玉王玉婷徐全李鹏王成山于力袁智勇
Owner TIANJIN UNIV