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首页> 外国专利> VOLTAGE REGULATION DEVICE AND VOLTAGE REGULATION METHOD FOR POWER DISTRIBUTION GRID

VOLTAGE REGULATION DEVICE AND VOLTAGE REGULATION METHOD FOR POWER DISTRIBUTION GRID

机译：配电网的电压调整装置及电压调整方法

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摘要

The purpose of the present invention is to enable control such that when output of a photovoltaic power generation device disposed in a power distribution grid is to be restricted, voltage at the installation point of the photovoltaic power generation device is reduced in order to eliminate the issue of output restriction. This voltage regulation device is disposed in a power distribution grid that includes a photovoltaic power generation device equipped with a function for restricting the amount of power generated when an end voltage of the device has risen above a predetermined voltage, and the voltage regulation device adjusts the tap position of a tapped transformer so as to regulate the secondary-side voltage of the tapped transformer to remain at or below a predetermined limit value. The voltage regulation device is provided with: a measurement unit for estimating a secondary-side voltage and passing current of the tapped transformer; a first voltage correction unit which corrects the estimated secondary-side voltage in accordance with the passing current and obtains a first voltage value; a second voltage correction unit which corrects the estimated secondary-side voltage in accordance with the passing current and obtains a second voltage value; and a tap controller for executing a tap operation of the tapped transformer when the first and second voltage values calculated by the first and second voltage correction units have deviated from the predetermined limit value. The second voltage value is an estimated end voltage of the photovoltaic power generation device. The tap operation of the tapped transformer is executed upon detecting that the second voltage value is showing a state of approaching the predetermined voltage.
机译：本发明的目的是使得能够进行控制，使得当限制布置在配电网中的光伏发电装置的输出时，降低光伏发电装置的安装点处的电压以消除该问题。输出限制。该电压调节装置布置在配电网中，该配电网包括光伏发电装置，该光伏发电装置配备有用于限制当装置的端电压升高到预定电压以上时产生的电力量的功能，并且该电压调节装置调节该发电量。抽头变压器的抽头位置，以便将抽头变压器的次级侧电压调节为保持在预定极限值或以下。电压调节装置包括：测量单元，用于估计抽头变压器的次级侧电压和通过电流;以及测量单元。第一电压校正单元，其根据通过电流校正估计的次级侧电压，并获得第一电压值;第二电压校正单元，其根据通过电流校正估计的次级侧电压，并获得第二电压值;当由第一和第二电压校正单元计算出的第一和第二电压值已经偏离预定极限值时，执行抽头变压器的抽头操作的抽头控制器。第二电压值是光伏发电装置的估计端电压。在检测到第二电压值显示出接近预定电压的状态时执行抽头变压器的抽头操作。

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