Power prediction device for low-voltage water resistor
A technology of power prediction and water resistance, which is applied in the direction of electric power measurement through current/voltage, electric power measurement by using electromagnetic effect devices, measurement devices, etc., can solve problems such as not having power prediction function, and achieve high engineering application value, Meet the test requirements and run easily
Pending Publication Date: 2020-07-10
中国船舶重工集团公司第七〇三研究所无锡分部
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At the same time, it does not have real-time power prediction function, which has great limitations
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[0024] Figure 1 to Figure 3 As shown, a power prediction device for low-voltage water resistance is disclosed, which mainly includes a low-voltage conversion module, a diode, a voltage measurement unit, a current measurement unit, and a power calculation module; or DC voltage step-down to provide a low-voltage power supply for the power prediction device; the diode is used to block the voltage of the main circuit of the water resistor from backfeeding the low-voltage side of the low-voltage conversion module; the The voltage measurement unit is used to measure the input and output voltage of the power prediction device; the current measurement unit is used to measure the output current of the power prediction device; the power calculation module is based on the measurement of the voltage measurement unit and the current measurement unit value, to complete the measurement, calculation and signal output functions of the pre-added power of the water resistance.
[0025] Wherein...
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The invention discloses a power prediction device for a low-voltage water resistor. The power prediction device mainly comprises a low-voltage conversion module, a diode, a voltage measurement unit, acurrent measurement unit, a power calculation module and the like, Wherein the low-voltage conversion module is used for reducing an alternating-current or direct-current voltage of the power supplyside and providing a low-voltage power supply for the power prediction device; and the diode is used for blocking reverse feeding of a voltage of a water resistor main loop to the low-voltage side ofthe low-voltage conversion module. The power prediction device has the beneficial effects that the preload power of the low-voltage alternating current / direct current water resistor can be accuratelymeasured, and the test requirement of dynamic sudden load can be well met; an electrical main loop is directly connected in parallel with the water resistor and does not need any other interlocking control signal, so that the operation is simple, safe and reliable; the power prediction device can be used for almost all structural forms of low-voltage alternating-current / direct-current water resistors on the market, and has extremely high engineering application value.
Description
technical field [0001] The invention relates to the technical field of generator set detection, in particular to a low-voltage water resistance device. Background technique [0002] When high-power low-voltage generator sets or other high-power low-voltage power supply equipment leave the factory, they need to use low-voltage simulated loads for electrical performance tests, including steady-state loading and unloading tests and dynamic sudden loading and unloading tests. Due to the characteristics of simple structure, reliable operation, low maintenance cost, and easy continuous stepless adjustment of load power, low-voltage water resistors have been widely used as low-voltage analog loads. [0003] In the dynamic sudden load test, due to the limitations of the water resistance itself, such as the depth l of the electrode plate immersed in the water cannot be measured in real time, and the conductivity ρ of the water is greatly affected by the environment and temperature, e...
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IPC IPC(8): G01R21/08G01R21/06G01R1/20G01R31/34G01R31/40G01R31/42
CPCG01R21/08G01R21/06G01R1/203G01R31/34G01R31/40G01R31/42
Inventor 俞希学张虞陈晓波陆彬周杰
Owner 中国船舶重工集团公司第七〇三研究所无锡分部