摘要
随着分布式新能源大量接入电网和电力电子技术在电网中的广泛应用,电网中发生振荡的风险加剧并逐步向宽频域振荡发展。针对调度端对电网宽频域特性缺乏有效监测手段的现状,研制了电网宽频监测系统。首先,介绍了宽频监测系统的硬、软件架构。接着,根据两种主流扩展版谐波通讯规范设计了宽频监测模型。然后,提出了宽频数据统一采集架构和宽频数据统一服务技术,研发了谐波/间谐波越限告警、宽频数据历史查询、宽频振荡告警推送等功能模块,实现了大容量高速率宽频信号的分布式采集、集中监视和分析。最后,通过工程应用实例表明宽频监测系统为电网更宽频域的动态监测、风险辨识以及早期防控提供了有力的数据支撑。
With the large-scale integration of distributed new energy sources into power grids and the wide application of power electronics,the power grid’s risk of oscillation has reached epidemic proportions and is resolving into broadband domain oscillation.Given the lack of effective means to monitor the broadband domain characteristics of the power grid on the dispatching side,a grid-oriented broadband monitoring system is developed.First,the hardware and software architectures of the system are introduced,and a broadband monitoring model is designed based on two mainstream extended versions of harmonic communication specifications.Then,a unified broadband data acquisition architecture and a unified broadband data service technology are proposed.Functional modules such as harmonic/interharmonic overrun alarm,historic broadband data query,and broadband oscillation alarm forwarding are developed to realize distributed acquisition,centralized monitoring,and analysis of high-capacity and high-rate broadband signals.Finally,it is shown through engineering practice that the broadband monitoring system provides powerful data support for dynamic monitoring,risk identification,prevention,and control in the more broadband domains in power grids.
作者
苏荣强
张海天
陈峰
施志良
张高峰
杨利民
张孝
SU Rongqiang;ZHANG Haitian;CHEN Feng;SHI Zhiliang;ZHANG Gaofeng;YANG Limin;ZHANG Xiao(NR Electric Co.,Ltd.,Nanjing 211102,China)
出处
《浙江电力》
2023年第1期63-69,共7页
Zhejiang Electric Power
关键词
宽频监测系统
宽频监测模型
宽频数据统一采集
宽频振荡监测
broadband monitoring system
broadband monitoring model
unified broadband data acquisition
broadband oscillation monitoring
