Analog switch and application method thereof
A technology of analog switch and application method, which is applied in the field of distribution network, can solve the problems of fault current cut-off, primary switch cannot receive remote control signal, etc., and achieve the effect of low cost
Inactive Publication Date: 2014-01-15
AEROSPACE SCI & IND SHENZHEN GROUP
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a low-cost switch that can receive remote control signals and simultaneously output and maintain remote signal Application Method of Analog Switch for Cutting Fault Current
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0024] see figure 1 , figure 1 is a structural schematic diagram of the analog switch of the present invention, such as figure 1 As shown, the analog switch 2 is respectively connected to the AC standard source 1 and the power distribution terminal 3, and the power distribution terminal 3 is connected to the distribution substation 4. The functions of each part are specifically described below:
[0025] The AC standard source 1 is used to output an AC current, and the AC current includes a working current and a fault current. It should be noted that those skilled in the art should understand that...
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The invention discloses an analog switch and an application method thereof. The analog switch is respectively connected with an AC (Alternating Current) standard power supply and a power distribution terminal, wherein the AC standard power supply is used for outputting alternating current, and the alternating current comprises working current and fault current; the power distribution terminal is used for sampling alternating current and sending remote-control signals, and the remote-control signals comprise remote-control switch-on signals and remote-control switch-out signals; the analog switch is used for receiving the remote-control signals and controls the switching of the alternating current according to sampling results of the alternating current and the remote-control signals. By implementing the technical scheme of the analog switch disclosed by the invention, the analog switch executes the corresponding switching action according to the alternating current output by the AC standard power supply and the received remote-control signals sent by the power distribution terminal, cuts off fault current during the switching action, and outputs the corresponding telecommand signals after completing the switching action. The analog switch had the advantages of low cost, and capabilities of receiving remote-control signals and simultaneously outputting and maintaining the telecommand signals, and the analog experiment of cutting off the fault current is realized.
Description
technical field [0001] The invention relates to the field of distribution networks, in particular to an application method of an analog switch. Background technique [0002] In the distribution network of the power system, the distribution terminal under the management of the distribution substation needs to perform remote switching operations on high-voltage switches such as load switches, circuit breakers, and isolating switches on the line in order to cut off the load on the line. , usually the power distribution terminal uses primary equipment such as voltage transformer PT and current transformer CT for sampling, assuming that the voltage range and current range of the low-voltage side of the transformer are [0V, 380V] and [0,50A] respectively; power distribution The terminal samples the low-voltage side of the transformer, and calculates the primary value according to the transformation ratio of the transformer. If the current of the zero-sequence transformer CT reache...
Claims
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IPC IPC(8): H02J13/00
Inventor 周启华
Owner AEROSPACE SCI & IND SHENZHEN GROUP