花瓣型配电网区域备自投系统控制策略优化研究及应用

doi:10.11930/j.issn.1004-9649.202303060

摘要/Abstract

摘要：

针对花瓣型配电网发生故障后，若故障无法被保护可靠隔离时会导致区域备自投系统无法实现“花瓣”恢复供电的问题，基于控制策略对等式的思想，提出一种新型区域备自投系统控制策略。新型控制策略主动进行故障隔离并通过相邻开关房的信息交互，实现“花瓣”的恢复供电及恢复供电后线路过载时各开关房中负荷的智能选切功能，通过信息交互也确保了安全稳定系统切负荷功能的有效性；同时提出了经主保护闭锁的后备保护，解决了“花瓣”内合环运行时后备保护定值整定配合困难和工作量大的技术问题。现场应用结果验证了新型控制策略的有效性，对其他配电网区域备自投系统控制策略的研究具有一定的借鉴意义。

关键词: 花瓣型配电网, 区域备自投系统, 控制策略, 信息交互, 智能选切负荷

Abstract:

In view of the problem that the regional sandby automatic switching system will not be able to realize the “petal” power supply restoration if the fault cannot be reliably isolated by protection, when fault occurs with the petal-type distribution network, a new control strategy for the regional standby automatic switching system is thereby proposed based on the idea of control strategy equation. The new control strategy actively carries out fault isolation and realizes, through information exchange between adjacent switch rooms, the “petal” function of restoring power supply and the intelligent load switching function in each switch room in case of line overload after power supply restoration. The information exchange also ensures the effectiveness of the load switching function of the safety and stability system. At the same time, this paper proposes a backup protection locked by the main protection, which solves the setting and coordination difficulty of the backup protection and the large workload during the operation of the “petal” inner closed loop. The field application has verified the effectiveness of the proposed new control strategy, which has certain reference significance for the research of the control strategy of the regional standby automatic switching system in other distribution networks.

Key words: petal-type distribution network, regional standby automatic switching system, control strategy, information exchange, intelligent load switching

冯宝成, 金震, 侯炜, 徐光福. 花瓣型配电网区域备自投系统控制策略优化研究及应用[J]. 中国电力, 2024, 57(1): 244-254.

Baocheng FENG, Zhen JIN, Wei HOU, Guangfu XU. Research and Application of Control Strategy Optimization for Regional Standby Automatic Switching System of Petal-Type Distribution Network[J]. Electric Power, 2024, 57(1): 244-254.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202303060

https://www.electricpower.com.cn/CN/Y2024/V57/I1/244

图/表 16

图 1 花瓣型区域配电网

Fig.1 Petal-type regional distribution network

图 2 花瓣型配电网主接线

Fig.2 The main wiring diagram of petal-shape distribution network

图 3 有无开环点信号的流向

Fig.3 The flow diagram of signal with or without open loop point

图 4 充电完成信号的流向

Fig.4 The flow diagram of charge complete signal

图 5 放电信号的流向

Fig.5 The flow diagram of discharge signal

图 6 开关房失压信号的流向

Fig.6 The flow diagram of switch room voltage loss signal

图 7 故障隔离信号的流向

Fig.7 The flow diagram of fault isolation signal

图 8 备投后过载切负荷信号的流向

Fig.8 The flow diagram of overload shedding signal after automatic standby switch action

图 9 闭环点开关房区域备自投控制策略逻辑示意

Fig.9 The logic diagram of standby automatic switch control strategy in the closed-loop switch room area

图 10 开环点开关房区域备自投控制策略逻辑示意

Fig.10 The logic diagram of standby automatic switch control strategy in the open-loop switch room area

图 11 花瓣内合环运行主接线

Fig.11 The main wiring diagram of petal inner closing loop operation

图 12 花瓣内解环运行主接线

Fig.12 The main wiring diagram of petal inner opening loop operation

图 13 现场花瓣型配电网主接线

Fig.13 The main wiring diagram of on-site petal-type distribution network

图 14 甲站母线故障区域备自投系统动作波形

Fig.14 The fault action waveform of standby automatic switching system in bus bar of station A

图 15 线路L2和房C母线故障区域备自投系统动作波形

Fig.15 The fault action waveform of standby automatic switching system in line L2 and bus bar of station C

图 16 线路L2和L6故障区域备自投系统动作波形

Fig.16 The fault action waveform of standby automatic switching system in line L2 and L6

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