海南电网电压暂降监测数据特征分析  

Data Characteristic Analysis of Monitored Voltage Sags in Hainan Power Grid

作　　者：方铭 李天楚 FANG Ming;LI Tianchu(Electric Power Research Institute of Hainan Power Grid Corporation Ltd., Haikou 570311, Hainan, China;Key Laboratory of Physical and Chemical Analysis for Hainan Power Grid, Haikou 570311, Hainan, China)

机构地区：[1]海南电网有限责任公司电力科学研究院,海南海口570311 [2]海南省电网理化分析重点实验室,海南海口570311

出　　处：《四川电力技术》2022年第3期35-40,共6页Sichuan Electric Power Technology

基　　金：海南电网科技项目(073000KK52190007)。

摘　　要：电压暂降监测数据特征分析是明确地区电压暂降水平的关键手段之一,可为电压暂降治理及预防提供基本信息。以海南电网电能质量监测平台的电压暂降监测数据为基础,对电压暂降波形幅值、持续时间、相位跳变和暂降类型4个特征量进行计算和分析。结果表明:该地区70%的实测暂降的幅值高于0.7 pu,持续时间小于0.1 s;90%的实测电压暂降的相位跳变在[-10°,10°]内,可推测该地区敏感设备可以躲过绝大多数因相位跳变而导致设备故障的暂降事件;60%的实测电压暂降的暂降类型为单相接地故障导致的D型,A型对称暂降仅占比3.79%。所分析的数据和结果可为电网侧和用户侧的电压暂降治理决策、设备参数设置和调试相关参数提供技术基础。The characteristic analysis of voltage sag monitoring data is one of the key means to understand the voltage sag level in the region,which can provide the basic information for control and prevention of voltage sag.Based on the voltage sag monitoring data of power quality monitoring platform of Hainan power grid,the voltage sag waveform amplitude and duration,phase angle jump and sag type are calculated and analyzed.The results show that:the amplitude of 70%measured voltage sag is higher than 0.7 pu,and the duration is less than 0.1 s.90%of the measured voltage sags are in the range of[-10°,10°],which can be inferred that most of the sensitive equipment in this area can avoid the sags causing equipment failure due to the phase angle jump.60%of the measured voltage sags are type D caused by single-phase ground fault,and only 3.79%are symmetrical sags type A.The analysis data and results can provide a technical basis for the decision-making of voltage sag control in grid side and user side,and for the setting and commissioning of relevant parameters by equipment manufacturers.

关 键 词：电压暂降 监测数据 暂降类型 相位跳变 特征计算 

分 类 号：TM713[电气工程—电力系统及自动化]