摘要
依据同步发电机进相试验导则,提出了计及发电机功角、定子电流和机端电压三大约束因素的抽水蓄能机组最大进相能力计算方法,全面分析了发电和抽水工况下机组的最大进相能力,研究了升压变分接头档位对全工况试验条件下机组最大进相能力的影响。以洪屏抽蓄电站#1机组为算例,绘制了机组最大进相能力随系统电压和有功出力变化的Q-PV三维曲面,任意进相试验工况下机组的最大进相能力均能与曲面中的某点相对应。试验人员通过查表即可准确掌握机组全工况下的最大进相能力,并了解当前进相深度是否满足试验要求,大大提高试验机组最大进相能力评估的准确性。试验实测数据与理论计算结果基本一致,验证了所提分析方法的正确性和实用性。
According to the guide on leading power factor operation test of synchronous generator,a capability calculation method of pumped storage unit considering constraints with generator power angle,stator current and machine terminal voltage is proposed in this paper.Leading power factor depth limit under generation operation mode and pumping operation mode is overall analyzed,and the tap changer stalls affecting on the leading power factor depth limit is also studied.Taking#1 generator of Hongping Pumping Station as example,the Q-PV three-dimensional surface of leading power factor depth limit changing with the system voltage and active power are showed in the picture,leading power factor depth limit of any test condition can correspond to a point in the surface.The test personnel can accurately grasp the leading power factor depth limit under all test conditions through the three-dimensional surface,which can greatly improve the accuracy of leading power factor depth limit assessing.The experimental data are basically consistent with the theoretical calculation results,which validates the correctness and practicability of the proposed method.
作者
陈波
王玉麟
辛建波
周宁
舒展
苏永春
Chen Bo;Wang Yulin;Xin Jianbo;Zhou Ning;Shu Zhan;Su Yongchun(Electric Power Research Institute of State Grid Jiangxi Electric Power Company,Nanchang 330000,China;School of Information Engineering,Nanchang University,Nanchang 330000,China)
出处
《电测与仪表》
北大核心
2020年第9期65-71,102,共8页
Electrical Measurement & Instrumentation
基金
江西省重点研发计划项目(20171BBE50017)
国家电网公司总部科技项目(52182017000W)。
关键词
抽水蓄能机组
进相试验
发电工况
抽水工况
最大进相能力
pumped storage units
leading power factor test
generation operation mode
pumping operation mode
leading power factor depth limit
