中压直流输电直流区域配电综合电力系统静态状态估计方法研究  

Static Estimation of the Integrated Power System with Medium Voltage DC and DC Zonal Distribution System

作　　者：肖润龙 王刚[1] 李子梦 熊又星[1] Xiao Runlong;Wang Gang;Li Zimeng;Xiong Youxing(National Key Laboratory for Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《电工技术学报》2018年第13期3023-3033,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51377167);国家重点基础研究发展计划(973计划)(613294)资助项目

摘　　要：采用中压直流输电和直流区域配电的电网结构形式,可大幅度提高舰船综合电力系统的功率密度。由于网络结构和设备控制策略的差异,传统陆用电力系统的状态估计方法无法直接应用于舰船综合电力系统。该文建立了综合电力系统静态状态估计的模型,给出了全系统状态估计方法,根据系统的实时性需求研究了分系统快速估计方法,对分系统间不同的接口量选取方式进行了分析,进一步通过对直流区域配电系统进行PQ分解,实现了快速状态估计,以提高算法的实用性。最后通过仿真验证了所提算法的有效性。The use of a network structure of medium-voltage DC transmission and DC-zonal electric distribution can significantly increase the power density and decrease the torque density of the vessel integrated power system.Because of difference in control strategies for the network structure and equipment,traditional state estimation methods for land power systems can not be applied directly to the integrated power system.This paper presents a model for the static estimation of the integrated power system and proposes a state estimation method for the whole system.According to real-time requirements,fast estimation methods for the subsystems are studied,and different interface variables are adopted independently to analyse their influence on the subsystems.A further decoupling of PQ through the DC zonal distribution system for implementing the fast state estimation aims to improve the practicability of the algorithm.Simulations prove the proposed fast state-estimation algorithm to be effective.

关 键 词：综合电力系统 中压直流输电 直流区域配电系统 状态估计 快速状态估计算法 

分 类 号：TM74[电气工程—电力系统及自动化]