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DEVICE FOR DETECTION OF DISTANCE TO SINGLE-PHASE SHORT-CIRCUIT TO GROUND IN ELECTRIC POWER TRANSMISSION LINES FOR 6-35 KV WITH INSULATED OR COMPENSATED NEUTRAL WIRE
DEVICE FOR DETECTION OF DISTANCE TO SINGLE-PHASE SHORT-CIRCUIT TO GROUND IN ELECTRIC POWER TRANSMISSION LINES FOR 6-35 KV WITH INSULATED OR COMPENSATED NEUTRAL WIRE
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机译:检测带有绝缘或补偿中性线的6-35 KV电力传输线中单相短路至接地的距离的装置
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摘要
FIELD: relay protection equipment. SUBSTANCE: device has serial circuit of standard unit for 6-35 kV, which has automatic breaking unit (after it is switched on) and special measuring unit which has mobile cable and clamps at output. Measuring unit provides possibility to design circuit in which single-phase short-circuit current which is clipped by resistor is passed through two phase lines one of which is short-circuited to ground. Current for each phase is registered in order to calculate distance to short-circuit point. Cable with clamps can be used for connection to arbitrary power supply tap. Other claims of invention describe device design which has by-pass current conductors and by- pass switches. EFFECT: increased functional capabilities. 3 cl, 3 dwg
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