Liquid resistor load device for controlling resistance of liquid resistor through controller

Abstract

The present invention relates to a liquid resistor load device for controlling the resistance of a liquid resistor through a controller. The device comprises a liquid resistance case, a liquid storage case, a liquid level sensor, a controller, a water pump, a motor, a gas-phase balance pipe, a liquid-phase connection pipe, a solenoid valve and the like. The resistance liquid is stored in the liquid resistance case and the liquid storage case, the two cases are integrated and are separated by the clapboard, an electrode and a position sensor are arranged at the liquid resistance case, and the electrode is inserted into the resistance liquid. The controller is connected with the liquid level sensor, the motor and the solenoid valve; the inlet of the water pump is connected with the resistance liquid at the resistance liquid supplement valve and the lower portion of the reservoir, and the outlet thereof is connected with the resistance liquid of the liquid resistance case and the resistance liquid gas phase of the liquid storage case. The liquid resistor load device for controlling the resistance of a liquid resistor through a controller employs a controller to regulate and control starting and closing of the solenoid valve and starting and stopping of the water pump, regulate and control the height of the resistance liquid level and regulate the resistance value so as to satisfy the requirement for the electrical performance test of various generators or other power devices with other powers.

Description

Technical field [0001] The invention belongs to the technical field of electrical performance testing of power supply equipment, and relates to a liquid resistance load device in which a controller regulates the resistance value of the resistance liquid, and is suitable for electrical performance testing of various generators or other power supply equipment. Background technique [0002] As we all know, it is necessary to provide a simulated load when performing electrical performance tests on various generators or other power supply equipment. At present, there are many ways to provide analog loads. One is to use analog loads such as fixed resistors. This type of load uses step-by-step switching to adjust the resistance value. Due to the constraints of heat dissipation, the power is generally small and is not suitable for high power. Electrical performance test requirements for generators or high-voltage and high-power power supply equipment; the second is to use transforme...

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Problems solved by technology

At present, there are many ways to provide analog loads. One is to use analog loads such as fixed resistors. This type of load uses step-by-step switching to adjust the resistance value. Due to the constraints of heat dissipation, the power is generally small and is not suitable for high power. Electrical performance test requirements for generators or high-voltage and high-power power supply equipment; the second is to use transformers to convert high-voltage electricity into low-voltage electricity, and use low-voltage loads to conduct electrical performance test simulation loads. This type of load dissipates heat faster and the power can be achieved. The third is to use semiconductor power components directly as simulated loads, which can meet the requirements of small Power load test needs, but it is difficult to meet the requirements of 1MW and above high-voltage high-power load test; the fourth is to use liquid resistance load device, this kind of load power can be made very large, and the resistance value can be adjusted steplessly, but at present the basic All of the above adopt mechanical transmission mode, and the purpose of adjusting the resistance value of the resistance liquid is achieved by changing the contact area between the electrode and the resistance liquid. Faster, due to the vaporization of the resistance liquid and the drop of the liquid level, the resistance value of the resistance liquid changes, which may affect the electrical performance test of the generator or power supply equipment

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