基于源-荷功率动态匹配的海上平台电力系统静态电压稳定分析  

Static voltage stability analysis of offshore platform power system based on source-load power dynamic matching

作　　者：王艳松[1] 宣德之 李强 WANG Yansong;XUAN Dezhi;LI Qiang(College of New Energy,China University of Petroleum(East China),Qingdao 266580,China;CNOOC Ltd.,Beijing 100027,China)

机构地区：[1]中国石油大学(华东)新能源学院,山东青岛266580 [2]中海石油(中国)有限公司,北京100027

出　　处：《电力自动化设备》2021年第4期132-138,共7页Electric Power Automation Equipment

基　　金：国家重点研发计划项目(2018YFB0904800)。

摘　　要：对海上平台电力系统进行静态电压稳定分析是保证其安全性、可靠性的前提。针对海上平台电力系统多平衡节点特征,基于透平发电机组和旋转负荷群的源-荷特性建立计及源-荷功率动态匹配特性的扩展连续潮流模型;针对海上平台电力系统的机组小容量特征和旋转负荷的生产要求,基于机组出力和节点电压的限值确立静态电压稳定分析边界约束;推导扩展连续潮流增广雅可比矩阵,提出基于牛顿-拉夫逊法的静态电压稳定分析方法。对某海上平台电力系统的静态电压稳定分析结果表明,与传统牛顿-拉夫逊法相比,所提方法不仅能找出随负荷增加的电压薄弱节点,且能给出各机组适应负荷增加的出力值。The static voltage stability analysis of offshore platform power system is the premise to ensure its security and reliability.Aiming at the feature of multiple slack buses in offshore platform power system,an extended continuous power flow model is built based on the source-load characteristics of turbo-generator and rotating load group,which considers the source-load power dynamic matching characteristics.Aiming at small capacity characteristics of units in offshore platform power system and production requirement of rotating loads,the static voltage stability analysis boundary constraint is established based on the limits of unit output and bus voltage.The augmented Jacobian matrix of extended continuous power flow is deduced,and a static voltage stability analysis method based on Newton-Raphson method is proposed.The static voltage stability analysis results of an offshore platform power system show that,compared with the traditional Newton-Raphson method,the proposed method can not only find the voltage weak bus along with the load increase,but also give the output value of each unit adapting to the load increase.

关 键 词：静态电压稳定 多平衡节点 连续潮流 源-荷功率动态匹配 增广雅可比矩阵 

分 类 号：TM711[电气工程—电力系统及自动化]