Intensive power unit driving board

Abstract

The invention relates to an intensive SVG (static var generator) power unit driving board which is capable of improving the quality of a power network and used in an electric power system. The intensive power unit driving board is characterized in that a main control unit is adopted as a core, a triggering signal of a control system is received, control signals for upper arm bridges and lower arm bridges are formed, current state signals of IGBTs (insulated gate bipolar translators) of the upper arm bridge and the lower arm bridge are received synchronously, an overvoltage fault signal, a normal driving signal and an undervoltage fault signal can be obtained by detecting voltage at two ends of a capacitor, the temperature of a SVG power unit is monitored in real time, and an overtemperature fault signal is received. The intensive power unit driving board has the advantages that stable control is provided for the power unit of an intensive SVG device, dynamic, quick and continuous reactive output adjusting can be achieved via an SVG control system, and requirements of power factor compensation are satisfied maximally.

Description

technical field [0001] The invention relates to an intensive SVG power unit driving board, which is applied to an SVG device for improving and improving the quality of a power system in an electric power system. Background technique [0002] In recent years, as a large number of non-linear loads such as modern power electronic equipment are connected to the power grid, the power supply quality of the power grid has been seriously affected. Static dynamic reactive power compensation SVC devices are usually used to suppress harmonics and compensate reactive power, but there is a long response time. , the filtering ability is poor, and it is easy to resonate with the grid system. At present, in order to shorten the response time and improve the filtering ability, more and more users start to use the static var generator SVG, so the drive circuit of the power unit in the SVG is also essential It plays a very important role. In the SVG power unit, whether the IGBT works stably or...

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Problems solved by technology

[0002] In recent years, as a large number of non-linear loads such as modern power electronic equipment are connected to the power grid, the power supply quality of the power grid has been seriously affected. Static dynamic reactive power compensation SVC devices are usually used to suppress harmonics and compensate reactive power, but there is a long response time. , the filtering ability is poor, and it is easy to resonate with the grid system. At present, in order to shorten the response time and improve the filtering ability, more and more users start to use the static var generator SVG, so the drive circuit of the power unit in the SVG is also essential It plays a very important role. In the SVG power unit, whether the IGBT works stably or not directly affects the reliable operation of the system. The traditional drive circuit does not have a unified data processing unit, and cannot monitor the voltage value, current value and itself of the IGBT in real time. The temperature makes the IGBT vulnerable to damage, resulting in unstable operation of the system

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