Wireless remote control open/close method of 24kV vacuum breaker and its breaker

Abstract

The invention relates to a method for switching on and switching off a wireless remote control of a 24kV vacuum circuit breaker. The method comprises the following steps: 1) switch-off or switch-on wireless data and address coding wave are transmitted by a wireless transmit unit; 2) a wireless receiving unit decodes the wireless coding and compares with a setting coding, and then drives an executing unit after twice confirmations; 3) the executing unit outputs executing signals and realizes switch-off and switch-on operation of the 24kV vacuum circuit breaker. The 24kV vacuum circuit breaker comprises a power unit, the wireless transmit unit, the wireless receiving unit and the executing unit; the power unit is connected with and supplies power to the wireless receiving unit and the executing unit; the wireless transmit unit and the wireless receiving unit are communicated by wireless signals and the output of the wireless receiving unit is connected with the input of the executing unit. The method provided by the invention improves safety and reliability of operation of operators and has the advantages of high ability of anti-interference, etc.

Description

Technical field [0001] The invention belongs to the field of electric power, and particularly relates to a wireless remote control opening and closing method for a 24kV vacuum circuit breaker and a circuit breaker. Background technique [0002] With the rapid increase of electricity load in China's large and medium cities, and the increasingly prominent problems of long lines, old equipment, and high line losses in rural power grids, the original 10kV power supply has been unable to meet the power supply requirements, gradually revealing that its power supply distance is too large , The line loss rate is high, the voltage quality is difficult to meet the requirements and other weaknesses, and the use of 20kV voltage level power supply has a series of advantages such as increasing the power supply capacity, ensuring the voltage quality, reducing the power loss of the power grid, and saving the cost of power grid construction. my country is currently investing huge sums of money in...

AI Technical Summary

Problems solved by technology

Most of the 24kV circuit breakers are used outdoors and installed on the towers of the 20kV distribution network. When personnel are required to operate them, they need to open and close the vacuum circuit breakers on the outdoor poles through insulating rods. This operation is neither convenient nor expensive. unsafe

Therefore, there is an urgent need for a 24kV circuit breaker with wireless remote control function, but the current wireless switching power supply uses a transformer power supply. When the circuit parameters are determined, the output voltage is constant, but the output current changes with the increase or decrease of the load. Work reliability is affected

The high voltage and high current of the 24kV transmission line also imposes strict requirements on the wireless switchgear, which makes the EMC electromagnetic compatibility requirements more stringent. The previous wireless switch is not suitable for the high-voltage field, and it is prone to malfunction, which brings challenges to reliability.

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