Study on Cooperative Monitoring Strategy Based on Sub-synchronous Oscillation of Regional Power Grid

XU Gang; WANG Shengli; REN Chong; LI Ziming

doi:10.14044/j.1674-1757.pcrpc.2020.04.031

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Study on Cooperative Monitoring Strategy Based on Sub-synchronous Oscillation of Regional Power Grid

更新时间：2024-09-14

- Study on Cooperative Monitoring Strategy Based on Sub-synchronous Oscillation of Regional Power Grid
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 4, Pages: 176-181(2020)
- 作者机构：
  
  1. 华北电力大学电气与电子工程学院
  2. 国网新疆电力有限公司
  3. 国家电网公司西北分部
  4. 国网浙江桐乡市供电公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.04.031
  CLC： TM712
- Published：2020，
- 稿件说明：
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[1]许刚,王胜利,任冲,李自明.基于区域电网次同步振荡的协同监测策略研究[J].电力电容器与无功补偿,2020,41(04):176-181.

XU GANG, WANG SHENGLI, REN CHONG, et al. Study on Cooperative Monitoring Strategy Based on Sub-synchronous Oscillation of Regional Power Grid. [J]. Power capacitor & reactive power compensation, 2020, 41(4): 176-181.
[1]许刚,王胜利,任冲,李自明.基于区域电网次同步振荡的协同监测策略研究[J].电力电容器与无功补偿,2020,41(04):176-181. DOI： 10.14044/j.1674-1757.pcrpc.2020.04.031.

XU GANG, WANG SHENGLI, REN CHONG, et al. Study on Cooperative Monitoring Strategy Based on Sub-synchronous Oscillation of Regional Power Grid. [J]. Power capacitor & reactive power compensation, 2020, 41(4): 176-181. DOI： 10.14044/j.1674-1757.pcrpc.2020.04.031.

摘要

针对新能源汇集区域频发次同步振荡的问题

本文在电网侧安装次同步振荡监测点基础上

提出一种通过在电厂侧增加火电机组轴系扭振监测点

提高区域电网次同步振荡监测精度的协同监测策略

从而实现电网联络线次同步电流模态和电厂机组次同步模态的在线监测、记录、阻尼计算、稳定性评估等功能。并将协同监测策略应用到哈密某区域电网

通过现场试验表明了该策略能够对次同步振荡模态进行在线监测

并对模态阻尼实现在线辨识和预警

验证了该策略的有效性

为设计机网协调的次同步振荡监测、预警与保护一体化闭环防御系统提供可行的研究方向。

Abstract

In view of the problem of frequent sub-synchronous oscillations in the new energy gathering area

it is proposed in this paper to increasing the monitoring points of thermal power unit shafting torsion al vibration on the power plant side on the basis of installation of sub-synchronous oscillation monitoring points on the power grid side

improve the cooperative monitoring strategy of monitoring accuracy of sub-synchronous oscillations in the regional power grid so to achieve such functions as on line monitoring

record

damping calculation and stability assessment of sub-synchronous current mode of power grid tie line and sub-synchronous mode of power plant.It is shown by the site test that the strategy can perform one line monitoring of sub-synchronous oscillation

achieve on line identification and pre-warning of the mode damping

verify effectiveness of the strategy and provide a feasible research direction for the design of the integrated closed-loop defense system of sub-synchronous oscillation monitoring

early warning and protection.

关键词

次同步振荡（SSO）协同监测策略电流模态

Keywords

sub-synchronous oscillation（SSO）cooperative monitoring strategycurrent mode

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