换流阀低压加压试验方法与研究

The Low Pressure Test Method and Research of Converter Valve

依据±800kV特高压直流输电工程系统结构和接线方式,结合换流站实际运行方式,对换流阀低压加压试验方法和试验数据进行探讨和研究。提出使用输出为0~400V感应调压变压器进行低压调节和15kV/0.4kV试验升压变压器组成换流变升压电源,通过从换流变交流侧输入电压,直流侧对换流阀进行加压,模拟控制保护系统在低电压、低电流的整组试验,提高了换流阀低压加压的试验效率和准确性,为后续新建换流站低压加压试验提供了一定的试验依据。

Based on the system structure and wiring method of±800 kV UHVDC transmission system,this paper discusses the low pressure test method and test data of the converter valve in combination with the actual operation mode of the converter station.In this paper,it uses the induction voltage transformer of the output between 0 and 400 Vfor low-voltage adjustment and the test step-up transformer about 15 kV/0.4 kV composing of rheological power supply,Through the converter from the input voltage of the exchange side and the converter valve pressure of the DC side,which simulated the whole group test of control protection system in the low voltage and low current full set.Thus,it improves the test efficiency and accuracy of the low pressure and pressurized of the converter valve,and providing some experimental basis for the low pressure test of the new converter station.