胡安平,陶以彬,庄俊,等. 基于扰动无功功率的电压暂降源定位[J]. 科学技术与工程, 2020, 20(30): 12415-12422.
Hu Anping,et al.Voltage sag location based on disturbance reactive powerHU An-ping1, 2, TAO Yi-bin1, 2, YANG Bo1, 2, QU Ke3, LI Guan-jun1, 2, DING Kai4[J].Science Technology and Engineering,2020,20(30):12415-12422. |
| 基于扰动无功功率的电压暂降源定位 |
| Voltage sag location based on disturbance reactive powerHU An-ping1, 2, TAO Yi-bin1, 2, YANG Bo1, 2, QU Ke3, LI Guan-jun1, 2, DING Kai4 |
| 投稿时间：2019-08-26 修订日期：2020-07-31 |
| DOI： |
| 中文关键词: 电压暂降 定位 扰动 无功功率 负序 |
| 英文关键词: |
| 基金项目:国家电网公司总部科技项目（现代工业园区电压暂降影响因素评估及防治关键技术研究：NY71-18-027） |
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| 中文摘要: |
| 暂降源定位对于查找暂降源、划分暂降责任有重要作用。为了确定暂降源的上下游位置，本文从线性电路的叠加原理入手，通过分析故障过程中电气特征变化规律，提出了基于扰动无功功率变化特征的电压暂降源定位方法。当发生三相对称故障时，如果监测点的正序扰动无功功率方向与规定正方向一致，电压暂降源在上游，反之则在下游；当发生不对称故障时，如果监测点的负序扰动无功功率方向与规定正方向一致，电压暂降源在下游，反之则在上游。大量仿真与实测数据表明，本文方法不受暂降持续时间影响，能够实现电压暂降源的上下游定位，具有较高准确率。 |
| 英文摘要: |
| Voltage sag location plays a significant role in seeking voltage sag source and dividing responsibility. In order to determine the location of a voltage sag source, based on the superposition principle of linear circuit and through analyzing the change rules of electrical characteristics during faults, a voltage sag location approach is proposed on the basis of change features of disturbance reactive power. When a three-phase symmetric fault occurs, the voltage sag source is determined in the upstream if the direction of positive-sequence disturbance reactive power is in accord with the regulated positive direction at a monitoring point, otherwise, in the downstream. When an asymmetric fault occurs, the voltage sag source is determined in the downstream if the direction of negative-sequence disturbance reactive power is in accord with the regulated positive direction at a monitoring point, otherwise, in the upstream. A large quantity of simulation and measured data indicates the proposed approach is not susceptible to sag duration and can make it possible to determine the upstream or downstream location of a voltage sag source. The approach has high accuracy of location. |
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