多直流电压等级电网运行稳定控制系统

Multi-DC voltage level grid operation stability control system

电网运行稳定控制系统易受电场波动的影响,诱发直流电压发生持续波动的情况。为此,在分析多直流电压等级后设计了一种新的电压等级电网运行稳定控制系统,从电网运行系统的硬件和软件两方面进行优化。系统硬件主要由变压器和变换器组成,变压器选择DIAU-1928系列的直流电力变压器,变换器采用SCC-9901型DC变换器作为控制系统的核心设备。分析直流变压器漏感的影响和直流变压器频率的影响,建立稳定性分析程序和电网控制程序,实现软件流程。实验结果表明,多直流电压等级电网运行稳定控制系统在电场出现波动时,确保电压基本稳定在1.01 pu,能够起到较好的控制作用。

The power grid operation stability control system is easily affected by the fluctuation of the electric field,which induces the continuous fluctuation of the DC voltage.In order to improve the stability and control performance of power grid operation and reduce the impact of electric field fluctuations,this paper designs a new voltage level grid operation stability control system after analyzing multiple DC voltage levels,and optimizes the power grid operation system from both hardware and software aspects.The system hardware is mainly composed of transformers and converters.The transformers use DIAU-1928 series DC power transformers,and the converters use SCC-9901 DC converters as the core equipment of the control system.Analyze the influence of the leakage inductance of the DC transformer and the influence of the frequency of the DC transformer,establish the stability analysis program and the power grid control program,and realize the software process.The experimental results show that the multi-DC voltage level grid operation stability control system can ensure that the voltage is basically stable at 1.01 pu when the electric field fluctuates,which can play a good control role.