引用本文:胡柏玮,丁理杰,刘新宇,等.基于相量量测的中小型水电集群动态等值方法研究[J].电力系统保护与控制,2016,44(9):90-96.
HU Bowei,DING Lijie,LIU Xinyu,et al.A dynamic equivalent method for centralized small and medium hydropower generator group based on phasor measurement information[J].Power System Protection and Control,2016,44(9):90-96
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基于相量量测的中小型水电集群动态等值方法研究
胡柏玮1, 丁理杰2, 刘新宇1, 孙景涛1, 王晓茹1, 李旻3
1.西南交通大学电气工程学院，四川 成都 610031;2.四川电力科学研究院，四川 成都 610072;3.国网四川省电力公司，四川 成都 610041
摘要:
为了准确分析含中小型水电集群系统，针对中小型水电集群，提出了一种基于相量量测的动态等值建模方法。该方法以估计等值为基础，将扰动后互联区域间联络线上相量量测信息作为输入量，利用四阶龙格库塔法求解发电机动态方程，借助改进PSO算法实现参数的寻优更新，最终得到等值模型的各个参数。基于该方法对四川电网某地区中小型水电集群上进行动态等值建模，仿真结果证明了该方法的有效性与精确性。同时，基于仿真与负负荷表示的中小型水电集群对比分析，仿真结果证明了该方法的优越性与实用性。
关键词:  中小型水电集群  动态等值  估计等值法  相量量测信息  改进PSO算法
DOI：10.7667/PSPC151081
分类号:
基金项目:
A dynamic equivalent method for centralized small and medium hydropower generator group based on phasor measurement information
HU Bowei1, DING Lijie2, LIU Xinyu1, SUN Jingtao1, WANG Xiaoru1, LI Min3
1.School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China;2.Sichuan Electric Power Research Institute, Chengdu 610072, China;3.Sichuan Power Corporation of State Grid, Chengdu 610041, China
Abstract:
To analyze power system with centralized small and medium hydropower generator group accurately, this paper proposes a method to build a dynamic equivalent model of small and medium hydropower generator group based on phasor measurement information. Some procedures, such as inputting the phasor measurement information which exists in interconnection line after a disturbance, solving the generator dynamic equations based on 4-order Runge-Kutta method, and using modified PSO algorithm to update each parameter, are used in this method based on estimate equivalent method. For validation purposes, the proposed method is applied to the centralized small and medium hydropower generator group in Sichuan province. Results show that the reduced system retains the dynamic performance of the original system with good accuracy. Further simulations are made to compare with small and medium hydropower generator group which represent as a negative load. Results prove the superiority and practicability of the dynamic equivalent method.
Key words:  centralized small and medium hydropower generator group  dynamic equivalent  estimate equivalent method  phasor measurement information  modified PSO algorithm
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