基于同步量测的配网态势感知技术在新型电力系统中应用与展望  

Application and Prospect of Distribution Network Situation Awareness Technology Based on Synchronous Measurement in New Power System

作　　者：徐全 雷金勇 袁智勇 XU Quan;LEI Jinyong;YUAN Zhiyong(Electric Power Research Institute,CSG,Guangzhou 510663,China;Digital Grid Research Institute CSG,Guangzhou 510663,China)

机构地区：[1]南方电网科学研究院,广州510663 [2]南方电网数字电网研究院,广州510663

出　　处：《南方电网技术》2023年第1期136-143,共8页Southern Power System Technology

基　　金：中国南方电网有限责任公司科技项目(GZKJXM20210486);国家自然科学基金资助项目(51877076)。

摘　　要：随着新型电力系统的建设,大规模分布式能源接入和高比例电力电子设备应用,其固有的波动性、随机性和间隙性,将可能导致电压波动及越限、系统惯量下降、故障处理困难等问题,同时对可靠性的要求越来越高,所以迫切需要配网态势感知控制与保护等新技术的引入来解决相应挑战。提出配电网态势感知控制与保护技术的核心是同步量测包括同步相量、同步波形和同步行波,关键技术包括稳态、动态和暂态个层面的配网态势感知传感技术、配网态势感知控制技术和配网态势感知保护技术。从电压电流宽频多级同步量测及态势感知、基于配电网态势的多级电压控制、基于配电网态势的分布式资源频率惯量主动支撑和基于故障态势的诊断与精确定位个方面,提出了配网态势感知技术在新型电力系统中应用亟待研究的主要技术内容,提出在“站线变户”部署相适应装备的构想,最后对研究方案进行了初步验证。With the construction of new power system,large-scale distributed energy access and high proportion power electronic equipment application,its inherent volatility,randomness and gap may lead to voltage fluctuation and out of limit,system inertia decline,fault handling difficulties,etc.At the same time,the requirements for reliability are becoming higher,so it is urgent to introduce new technologies such as distribution network situation awareness control and protection to solve the corresponding challenges.This paper proposes that the core of distribution network situational awareness control and protection technology is synchronous measurement,including synchronous phasor,synchronous waveform and synchronous traveling wave.The key technolo⁃gies include situational awareness sensing technology,situational awareness control technology and situational awareness protection technology at three levels:steady,dynamic and transient state.The main technologies include voltage and current broadband multilevel synchronous measurement and situational awareness,multi-level voltage control based on distribution network situation,the distributed resource frequency and inertia active support based on the distribution network situation,and the diagnosis and precise positioning based on the fault situation are proposed.The idea of deploying appropriate equipment in the“substation-linetransformer-house”is proposed.Finally,the research scheme is preliminarily verified.

关 键 词：态势感知控制与保护 新型电力系统 配电网 同步量测 站线变户 

分 类 号：TM711[电气工程—电力系统及自动化] TM762