| 基于注入变频信号法的经消弧线圈接地系统控制与保护新方法 |
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| 引用本文： | 曾祥君,尹项根,于永源,陈德树.基于注入变频信号法的经消弧线圈接地系统控制与保护新方法[J].中国电机工程学报,2000,20(1):29-32. |
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| 作者姓名： | 曾祥君 尹项根 于永源 陈德树 |
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| 作者单位： | 1. 华中理工大学电力系,湖北省,武汉市,430073
2. 长沙电力学院电力系,湖北省,长沙市,410077 |
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| 摘 要： | 提出基于注入信号法的控制与保护新方法采用注入零序恒流信号，测量系统谐振频率，计算电容电流，进行消弧线圈自动调谐；采用测量零序信号电压，计算接地电阻，进行高阻接地故障辨识；采用测量各出线零序信号功角，计算线路阻尼率，进行故障选线。该方法不受系统运行的影响，易实现就地保护控制，精度高、抗干扰能力强。样机已通过动模实验，其中消弧线圈自动调整系统已形成产品，在现场运行多年，效果良好。
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| 关 键 词： | 注入信号法 消弧线圈 配电网自动化 继电保护 |
| 文章编号： | 0258-8013 (2000) 01-0029-05 |
| 修稿时间： | 1999-02-02 |
NEW METHODS FOR CONTROL AND PROTECTION RELAY IN A COMPENSATED MEDIUM VOLTAGE DISTRIBUTION NETWORK BASEDON INJECTING VARIOUS FREQUENCY CURRENT |
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| ZENG Xiang-jun,YIN Xiang-gen,YU Yong-yuan,Chen De-shu.NEW METHODS FOR CONTROL AND PROTECTION RELAY IN A COMPENSATED MEDIUM VOLTAGE DISTRIBUTION NETWORK BASEDON INJECTING VARIOUS FREQUENCY CURRENT[J].Proceedings of the CSEE,2000,20(1):29-32. |
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| Authors: | ZENG Xiang-jun YIN Xiang-gen YU Yong-yuan Chen De-shu |
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| Abstract: | Traditional methods for protection relay and control in compensated network are difficult to meet the requirement of distribution system automation. New methods based on injecting current are presented in this paper. Petersen coil automation tuning system is implemented, which is based on measuring the system resonance frequency. High impedance fault detection is implemented by measuring the zero sequence voltage caused by injecting current. And the fault feeder is detected by measuring the zero sequence power factor caused by injecting current. This principle is not affected by system operation. It has high precision and high reliability. The prototypes for protection relay and control is developed, which have passed the simulation test. While Petersen coil automation tuning system has been tested on the network for many years. |
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| Keywords: | power distribution control protective relaying fault diagnosis inductor compensated distribution lines |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
