| 引用本文: | 初壮,孙陶然,雷振伍,黄大为.考虑带泵类负载感应电动机影响的静态电压稳定性分析[J].电力系统保护与控制,2019,47(1):51-58.[点击复制] |
| CHU Zhuang,SUN Taoran,LEI Zhenwu,HUANG Dawei.Static voltage stability analysis considering the influence of pump loads induction motor[J].Power System Protection and Control,2019,47(1):51-58[点击复制] |
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| 摘要: |
| 为了更准确计及泵类负载机械特性对配电网静态电压稳定的影响，建立了一种将感应电动机T型等效电路与泵类负载机械特性相结合的感应电动机负荷模型。将其用于配电网潮流计算，采用前推回代法求解。进而将其用于连续潮流计算，建立了带泵类负载多台相同感应电动机的等效负荷模型，分析负荷连续增长对配电网静态电压稳定的影响。采用IEEE33节点算例对提出的模型与方法进行仿真验证，并与负荷按恒功率因数增加模型的连续潮流进行了对比。仿真计算验证了所提方法的合理性和有效性，表明采用该模型所得的静态电压稳定裕度要小于采用恒功率因数负荷计算结果，更接近工程实际情况。 |
| 关键词: 泵类负载 静态电压稳定性 感应电动机 负荷模型 连续潮流法 |
| DOI：10.7667/PSPC180032 |
| 投稿时间：2018-01-08修订日期：2018-04-23 |
| 基金项目:国家自然科学基金项目资助(61473002);国网四川省电力公司专项课题项目资助(521909160001) |
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| Static voltage stability analysis considering the influence of pump loads induction motor |
| CHU Zhuang,SUN Taoran,LEI Zhenwu,HUANG Dawei |
| (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China;School of Electrical and Control of Engineering, North China University of Technology, Beijing 100144, China) |
| Abstract: |
| In order to consider the influences of induction motors with pump loads on the static voltage stability of distribution networks more accurately, a load model of an induction motor is established, which combines the T-type equivalent circuit of induction motors with the mechanical characteristics of pump loads. The model is incorporated into the power flow computation of distribution networks, then the back/forward sweep method is used to solve the power flow. Furthermore, the proposed load model is adapted for Continuation Power Flow (CPF), and an equivalent load model of a number of identical induction motors with pump loads is deduced, the load model is used to analyze the effect of continuous load growth on the static voltage stability of the distribution networks. IEEE 33-bus test system is used to verify the proposed model and method, and the results are compared with the ones acquired with the CPF method with constant power factor load mode. The simulations verify the validity and effectiveness of the proposed method, and show that the static voltage stability margin with the load model proposed in this paper is less than that with the constant power factor load model, the proposed load model is more approximate to actual engineering conditions. This work is supported by National Natural Science Foundation of China (No. 61473002) and Special Project of State Grid Sichuan Electric Power Company (No. 521909160001). |
| Key words: pump load static voltage stability induction motor load model continuation power flow method |
