Analysis of Semantic Rules for the Influences of Integrating Distributed Generations on the Distribution Network Current Protections

doi:10.7652/xjtuxb201510018

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Analysis of Semantic Rules for the Influences of Integrating Distributed Generations on the Distribution Network Current Protections

更新时间：2025-07-09

- Analysis of Semantic Rules for the Influences of Integrating Distributed Generations on the Distribution Network Current Protections
- Vol. 49, Issue 10, Pages: 109-115(2015)
- 作者机构：
  
  武汉大学电气工程学院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201510018
  CLC： TM71
- Online First：10 October 2015，
  
  Published：2015
- 稿件说明：
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Analysis of Semantic Rules for the Influences of Integrating Distributed Generations on the Distribution Network Current Protections[J]. 2015, 49(10): 109-115.
DOI：

Analysis of Semantic Rules for the Influences of Integrating Distributed Generations on the Distribution Network Current Protections[J]. 2015, 49(10): 109-115. DOI： 10.7652/xjtuxb201510018.

摘要

为解决分布式电源(DG)接入传统配电网导致三段式电流保护无法正常工作的问题

提出了一种能判断一般的配网系统中DG接入对电流保护影响的语义规则库分析方法。首先

使用语义规则来设置DG对电流保护影响的校核

每条规则依次刻画了不同短路场景下对应电流保护的Ⅰ段、Ⅱ段和Ⅲ段正确动作的判定条件:若所有规则按顺序校验通过

则判断DG接入方案不会对三段式电流保护产生影响; 反之

保护则可能拒动或误动。然后

提出一种应用该规则库的DG准入容量优化方法

通过规则库生成DG准入容量的约束条件

在保证三段式电流保护可靠动作的前提下

优化多个DG的接入容量使其容量之和最大。仿真结果表明:当DG接入容量在8.19 MV·A以内时

三段式电流保护均可以正确动作

所提方法不仅能准确求解配电网中DG的准入容量

而且操作简单、易于工程实现。

Abstract

An applicable analysis of semantic rules that consider the influences of integrating distributed generations(DGs)on the distribution network current protections is proposed to effectively solve the malfunction of existing three-phase current protections. The semantic rules are used to describe the decision condition of three-phase current protections correct operation under different short circuit scenes. It is judged that the integrating DGs have no influence on the current protections in a generic distribution network if the semantic rules pass the validation process in order

otherwise it will lead to either malfunction or movement resistance. Then

the base of rules is applied to generate constraints for calculating the permitted capacities of DGs for integration. Specifically

the capacities of the integrated DGs are optimized so that the total capacity of them is maximized while the existing over-current protections can normally operate. Simulation results show that the DG capacity within 8.19 MV·A can ensure the current protection correct operation

and the high accuracy and efficiency of the presented rules are verified.

关键词

Keywords

references

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