Circuit protection system
A circuit protection and circuit technology, which is applied in the direction of circuit devices, overcurrent protection, emergency protection circuit devices, etc., can solve problems such as circuit breaker explosion and circuit breaker heating
Inactive Publication Date: 2019-06-18
YONGZHOU GOLDEN ANT NEW ENERGY MASCH CO LTD
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Problems solved by technology
Disconnecting the circuit through the circuit breaker can effectively prevent the short-circuit current from harming the current line, but if the short-circuit current level in the line exceeds the rated current of the circuit breaker for a long time, it will cause rapid heating of the circuit breaker, and even cause the circuit breaker to explode
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[0016] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0017] Such as figure 1 As shown, a circuit protection system is characterized in that it includes: a short circuit detector, a basic data acquisition module, a short circuit current calculation module, a first judgment module, a second judgment module, a control module and a circuit breaker;
[0018] The short-circuit detector is used to detect whether the circuit in the area to be detected is short-circuited, and when the circuit in the area to be detected is short-circuited, send a prompt message to the first judgment module;
[0019] The first judging module is used to judge whether the circuit in the area to be detected is short-circuited and cleared within a preset time period. Send judgment information;
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The invention relates to a circuit protection system. The system comprises a short circuit detector, a basic data collection module, a short circuit current computing module, a first judgment module,a second judgment module, a control module and a circuit breaker. A short circuit current value is computed according to current sampling data. When the short circuit current value is close to a ratedbreaking current value of the circuit breaker, whether to break the circuit or not cannot be accurately judged. The current sampling data in preset time is collected. A short circuit current precisevalue is computed through the current sampling data. How to send a control instruction to the circuit breaker is judged through comparison of the short circuit current value with the rated breaking current value of the circuit breaker. A circuit breaker is broken rapidly and precisely, so a fault circuit is protected.
Description
technical field [0001] The invention relates to the field of circuit break protection, in particular to a circuit protection system. Background technique [0002] With the development of urbanization, the load in my country's urban circuits has increased rapidly, and the load has become more dense, resulting in a continuous increase in the level of short-circuit current, so the harm caused by short-circuit current has become increasingly prominent. In addition to the short-circuit current caused by the aging of equipment and lines, the electromagnetic ring network formed by the joint input of different high and low voltage levels in the power system will also increase the level of short-circuit current. Today, the rated value of the operating level of the power system is not enough for actual operation. . In order to ensure the stable operation of the power system, it is necessary to cut off the short-circuit current in time. Disconnecting the circuit through the circuit b...
Claims
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IPC IPC(8): H02H3/08H02H3/02
Inventor 潘致利
Owner YONGZHOU GOLDEN ANT NEW ENERGY MASCH CO LTD