Intelligent electrical equipment indoor environment temperature control method based on temperature difference and device thereof

Abstract

The invention discloses an intelligent electrical equipment indoor environment temperature control method based on temperature difference, belonging to the intelligent indoor environment temperature control technology of an electric power system and electric user electrical equipment. The control method comprises the following steps: firstly performing self-inspection after the system is started, collecting indoor and outdoor environment temperature signals of electrical equipment, current and voltage signals of each side power of the electrical equipment and a work state of coolers after the self-inspection is normal; putting the coolers in sequence if the indoor temperature of the electrical equipment is higher than 40 DEG C, and cycling and collecting data; judging the indoor environment temperature T1 of the electrical equipment is higher than 60 DEG C, a programmable logic controller synthetically judging whether the electrical equipment has an ignition accident, the coolers controlling loop action, automatically quitting the operation of all the coolers, otherwise putting in all the coolers. The device can intelligently control the coolers to operate or stop operating on the premise that the reliable environment temperature of the electrical equipment operating safely is ensured, and the control method has the advantages of accurate control, optimal economic operation and the like.

Description

technical field [0001] The intelligent control method and device for the indoor environment temperature of electrical equipment based on the temperature difference belongs to the intelligent control technology of the indoor environment temperature of the electrical equipment of the power system and the power user. minimum level. Background technique [0002] Electrical equipment used indoors will generate energy loss due to the current passing through its conductors under the action of its own resistance and the contact resistance of the connection part (coil-type electrical equipment will also generate electromagnetic loss under the action of an electromagnetic field), and all these energy losses will be converted The temperature of each part of the electrical equipment will rise to varying degrees. The temperature rise is a vicious circle process. If no measures are taken, the operating temperature of the electrical equipment will continue to rise, reaching or exceeding th...

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Problems solved by technology

The current conventional heat dissipation method has the following disadvantages: 1. No matter whether the electrical equipment is running or not, when the indoor temperature reaches the set value, the whole group will force all the cooling devices to be put into operation. Fan motor or air conditioner, causing waste of electric energy

2. When an electrical equipment fire accident occurs, the indoor ambient temperature will inevitably rise to the temperature start-up setting value (under normal operation of the cooler, the temperature in the electrical equipment room is generally not allowed to be higher than 60°C, if the temperature is much higher than this value, It can be determined that an abnormal accident has occurred in the electrical equipment), the cooling device is still running or activated, and the air flow is forcibly accelerated, which will expand or aggravate the development of the accident, which is not conducive to extinguishing the fire

3. When the electrical equipment is running, although the heat generation level of the equipment itself is not high, but when the indoor ambient temperature is high, the cooling device is forced to be put into operation under the condition that the operating environment temperature requirements of the electrical equipment are met, which also causes unnecessary power consumption. Excessive loss

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 cooling device is often not put into operation in time, the temperature of the hot spot of the operating electrical equipment is too high, which affects its safe operation, and the power consumed by the electrical equipment itself often exceeds the power consumption of the input cooling device, which is extremely unreasonable economically.

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