Remote-monitoring power free automatic compensating controller

Abstract

The compensating device includes power supply circuit and cascaded voltage sampling circuit, selective switch circuit, A / D conversion circuit and main control CPU. Reset storage circuit and display circuit are connected to the main control CPU. Characters are that the main control CPU is connected to power factor measurement circuit, circuit for switching compensation capacitances, infrared communication circuit, and communication control CPU. The said communication control CPU is connected to transmitter receiver set of signal. Advantages are simple structure, reasonable design, high intelligence, reliable quality, good maintainability and easy of standardization etc.

Description

technical field [0001] The invention relates to a remote monitoring low-voltage power reactive power compensation device in the technical field of power supply. Background technique [0002] At present, in the known reactive power (power factor) compensation controller, a control circuit is connected to a set of low-voltage power compensation capacitors with fixed specifications. This kind of compensation controller switches according to the power factor. , the following situation may occur: after putting in several sets of capacitors, the power factor is a little lower than the preset value, and after putting in another set of capacitors, the power factor is overcompensated. If a smaller compensation capacitor is used, the power consumption peak Sometimes even if all of them are cast, the compensation may not be enough, and good reactive power compensation cannot be achieved. And the on-site voltage data can only be sampled one way or without sampling. When the voltage is ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the known reactive power (power factor) compensation controller, a control circuit is connected to a set of low-voltage power compensation capacitors with fixed specifications. This kind of compensation controller switches according to the power factor. , the following situation may occur: after putting in several sets of capacitors, the power factor is a little lower than the preset value, and after putting in another set of capacitors, the power factor is overcompensated. If a smaller compensation capacitor is used, the power consumption peak Sometimes even if all of them are put in, the compensation may not be enough, and it is impossible to achieve good reactive power compensation.

And the on-site voltage data can only be sampled one way or without sampling. When the voltage is too high, the capacitor cannot be cut off, and the loss under the overvoltage of the capacitor cannot be protected; the known reactive power compensator cannot automatically cool down at high temperatures; The power compensator can only be used as a separate device, and it cannot realize remote viewing of data and operating conditions. It has the disadvantages of low intelligence, inability to realize remote monitoring, poor flexibility, poor reliability, short capacitor life and poor capacitor scalability.

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