摘要
直流电压互感器是直流输电系统中测量直流侧一次电压的重要设备,柔性直流输电系统要求控制保护信号具有更快的响应速度,这对直流电压互感器的阶跃响应特性提出了更高的要求。为有效开展直流电压互感器的阶跃响应特性试验,本文开展直流电压互感器阶跃响应试验技术研究,提出柔性直流输电系统直流测量装置阶跃响应试验电源的关键指标,研究阶跃试验用电压源的技术方案,并提出电压源的基本电路结构和波形控制方法。仿真结果表明:阶跃试验用电压源满足相关标准和技术规范要求的陡前沿、长脉宽、高幅值电流输出特性。
DC voltage transformer is an important equipment for measuring the primary voltage at the DC side in the DC transmission system.The flexible DC transmission system requires the control protection signal to have a faster response speed,which puts forward higher requirements for the step response characteristics of DC voltage transformer.In order to effectively carry out the step response characteristic test of DC voltage transformer,the paper carries out the studies on the step response test technology of DC voltage transformer,proposes the key indicators of the step response test power supply of DC measuring device in flexible DC transmission system,studies the technical scheme of voltage source for the step test,and proposes the basic circuit structure and waveform control method of voltage source.The simulation results show that the voltage source for the step test meets the requirements of relevant standards and technical specifications with steep front,long pulse width and high amplitude current output characteristics.
出处
《电气化铁道》
2023年第1期91-96,共6页
Electric Railway
关键词
柔性直流输电
直流电压互感器
试验电压源
阶跃响应
flexible DC transmission
DC potential transformer
test voltage source
step response
