Operating environment control system and method for kyn series central switchgear

Abstract

The invention discloses an operating environment control system and method for a KYN series central switch cabinet and belongs to the technical field of intelligent control over operating environments of high voltage electrical apparatuses and equipment. The system comprises the KYN series switch cabinet and a ventilation device and a dehumidification device which are arranged on the switch cabinet; the system is characterized by being provided with a controller and a temperature detection module and a humidity detection module which conduct detection on the operating environment of the switch cabinet, the output end of the temperature detection module and the output end of the humidity detection module are connected with the input port of the controller, and the output port of the controller performs control over the operating states of the ventilation device and the dehumidification device through a control circuit. By means of the system and method, the temperature difference value and the humidity difference value between the interior and the exterior of the switch cabinet are collected in real time, the temperature difference value and the humidity difference value between the interior and the exterior of the switch cabinet are taken as the basis, and the working states of the ventilation device and the dehumidification device are controlled through the controller, so that the operation of the switch cabinet is safer, and energy waste is avoided.

Description

technical field [0001] The KYN series switchgear operating environment control system and method belong to the technical field of intelligent control of the operating environment of high-voltage electrical equipment. Background technique [0002] KYN series switchgear consists of two parts: cabinet body and handcart. The cabinet body is divided into 4 independent metal compartments by metal partitions, which are busbar room, circuit breaker handcart room, cable room and protection instrument room. [0003] During the operation of switchgear equipment, due to the current passing through the conductor, energy loss will occur under the action of its own resistance and the contact resistance of the connection part; the leakage current and the polarization of the insulating medium caused by poor insulation in the cabinet will cause energy loss; The eddy current of the metal shell under the action of the alternating electromagnetic field also produces energy loss, etc.; these ener...

AI Technical Summary

Problems solved by technology

[0010] 1. Regardless of whether the electrical equipment is running or not, when the indoor temperature and humidity reach the set value, the cooling and dehumidification devices will be forcibly put into operation. When the equipment is out of service and does not need heat dissipation and dehumidification, the fan motor, heater or Air conditioning, causing waste of electricity

[0011] 2. When a fire accident occurs, the ambient temperature in the switch room will inevitably be as high as the temperature start-up value, the ventilation device will remain in the running or activated state, and the air flow will be forced to accelerate, which will expand or aggravate the development of the accident, which is not conducive to fire extinguishing

[0012] 3. When the KYN switchgear is running, although the heat generation level of the equipment itself is not high, but when the indoor and outdoor ambient temperatures are high, the ventilation device is forced to be put into operation under the condition that the operating environment temperature requirements of electrical equipment are met, which also causes Unnecessary excessive loss of electrical energy

[0013] 4. When the outdoor ambient temperature is low, sometimes the indoor ambient temperature has not yet reached the start-up fixed value, but the heating level of the electrical equipment itself is already high, consuming a lot of power, and it is necessary to further reduce the heating level of the equipment through heat dissipation. When the heat dissipation device is often not put into operation in time, the temperature of the hot spot in the operating switch cabinet is too high, which affects its safe operation, which is extremely unreasonable in terms of safety and economy.

[0014] 5. The relative humidity inside the KYN switchgear will increase due to moisture intrusion at the cable entrance, local water spraying, environmental fog intrusion, and moisture overflow from the indoor wall. The local operating environment has high humidity and is damaged

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