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典型配网自愈模式对比研究

2021-01-11劳锐俊

今日自动化 2021年10期

劳锐俊

[摘    要]配网自愈是指利用自动化装置或系统,监视配电线路的运行状况,及时发现线路故障,诊断出故障区间并将故障区间隔离,自动恢复对非故障区间的供电。文章详细介绍了主站集中型、主站与级差保护协同型、主站与电压–时间/电流协同型、主站与智能分布式协同型四类自愈模式的动作原理及案例、功能要求,并详细对比了四种自愈模式的优缺点。

[关键词]配网自愈;运行状况;故障区间;非故障区间

[中图分类号]TM76 [文献标志码]A [文章编号]2095–6487(2021)10–00–02

Comparative Research on Typical Distribution Network Self-healing Modes

Lao Rui-jun

[Abstract]Distribution network self-healing refers to the use of automation devices or systems to monitor the operating conditions of distribution lines, detect line faults in time, diagnose fault sections and isolate fault sections, and automatically restore power to non-fault sections. This article introduces in detail the operation principles, cases, and functional requirements of the four types of self-healing modes: master station centralized, master station and differential protection coordination type, master station and voltage-time/current coordination type, master station and intelligent distributed coordination type. The advantages and disadvantages of the four self-healing modes are compared in detail.

[Keywords]distribution network self-healing yes; operating status; fault section; non-fault section

对于基于配电主站的自愈技术[1],根据配电主站与就地的协同程度,主要分为主站集中型、主站与级差保护协同型[2]、主站与电压—时间/电流协同型、主站与智能分布式协同型[3]共4类。

1 四类典型自愈模式的动作原理及功能要求

1.1 主站集中型

通过配电主站与配电终端的双向通信,根据实时采集的配电网及配电设备运行信息、故障信号,由配电主站自动计算或辅以人工方式远程控制开关设备投切,实现配电网运行方式优化、故障快速隔离与供电恢复。

1.2 主站与级差保护协同型

主站集中型配网自愈模式具备完整的配电自动化主站、终端及通信通道。通过配电终端与配电主站的双向通信,根据实时采集的配电网和配电设备运行信息及故障信号,由配电主站自动计算或辅以人工方式远程控制开关设备投切,实现配电网运行方式优化、故障快速隔离与供电恢复。

1.3 主站与电压-时间/电流协同型

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