| 引用本文: | 李一泉,王峰,吴梓亮,易江,石东源.基于方式变化影响域辨识及故障量排序的继电保护定值在线预警[J].电力系统保护与控制,2019,47(16):108-114.[点击复制] |
| LI Yiquan,WANG Feng,WU Ziliang,YI Jiang,SHI Dongyuan.A online early warning method for power grid protection relay setting based on mode change effect range identification and fault result ordering[J].Power System Protection and Control,2019,47(16):108-114[点击复制] |
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| 摘要: |
| 提出了基于方式变化影响域和故障量排序的继电保护定值快速在线预警方法。该方法以保护所在位置的短路电流、分支系数等继电保护定值计算相关故障量的变化率为判据，确定线路和变压器等电网元件开断后，定值将受到显著影响的保护集合。通过对故障量计算结果的排序优化来进一步提高定值在线分析的速度，实现继电保护定值的快速在线预警。工程实际应用表明，该方法可以快速准确地预警存在保护定值隐患的电网特殊运行方式和保护装置。 |
| 关键词: 继电保护 定值 在线预警 方式变化 影响域 |
| DOI：10.19783/j.cnki.pspc.181246 |
| 投稿时间：2018-10-08修订日期：2018-12-07 |
| 基金项目:国家自然科学基金项目资助(51777081);广东电网有限责任公司科技项目资助(GDKJQQ20161176) |
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| A online early warning method for power grid protection relay setting based on mode change effect range identification and fault result ordering |
| LI Yiquan,WANG Feng,WU Ziliang,YI Jiang,SHI Dongyuan |
| (Controlling and Dispatching Center of Guangdong Power Grid Co., Ltd., Guangzhou 510600, China;Key Laboratory for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Co., Ltd., Guangzhou 510600, China;Hubei Electric Power Security and High Efficiency Key Laboratory, Huazhong University of Science and Technology, Wuhan 430074, China) |
| Abstract: |
| A fast online early warning method for power grid protection relay setting based on mode change effect range identification and fault calculation result ordering is proposed. This method uses the rate of change of current and branch coefficient value at protection relay installation point to determine the protection relays that should change their setting values to accommodate the tripping off of line or transformer. And in order to further improve the speed of the on-line analysis of the protection relay setting, the order optimization of the short circuit calculation result is carried out. Thus the online early warning of protection relay setting can be achieved. The practical application shows that this method can quickly and accurately warn the special operation mode and protection relay of the power grid with hidden danger. This work is supported by National Natural Science Foundation of China (No. 51777081) and Science and Technology Project of Guangdong Power Grid Co., Ltd. (No. GDKJQQ20161176). |
| Key words: protection relay setting value online warning mode change domain of influence |
