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发明公开
CN110535106A 变电站、输电线路故障保护方法、装置、检测方法和装置 有权

变电站、输电线路故障保护方法、装置、检测方法和装置
摘要：
本发明涉及变电站、输电线路故障保护方法、装置、检测方法和装置，根据故障线路远端故障在线路对侧保护安装处近端，由对侧距离Ⅰ段快速动作，然后，计算各线路的各个采样周期的测量阻抗，然后根据故障线路和非故障线路在对侧距离Ⅰ段快速动作之后测量阻抗发生的不同变化，判断出故障线路，最后进行故障切除。因此，本发明提供的故障保护方法能够缩短故障切除的时间，能够解决当线路失去主保护后，远端故障切除时间过长的问题。而且，该故障保护方法能够根据测量阻抗可靠准确地识别出故障线路并进行故障切除，提升故障检测和故障切除的可靠性。
摘要（英）：

The invention relates to a substation and a transmission line fault protection method and device and detection method and device. The installation proximal end is protected on the opposite side of theline according to the remote fault of the fault line and the opposite side quickly operates at the distance of I section. Then the measured impedance of each sampling period of each line is calculated and then the fault line is judged according to different changes of the measured impedance of the fault line and the non-fault line after the quick operation of the opposite side at the distance section I, and finally the fault is removed. Therefore, the fault protection method can shorten the fault removal time and solve the problem that the remote fault removal time is too long when the line loses the main protection. Moreover, the fault protection method can reliably and accurately identify the fault line and remove the fault according to the measured impedance so as to improve the reliability of fault detection and fault removal.

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