摘要
为解决数字化智能变电站二次系统利用传统方法进行测试时效率低和容量小的缺陷,文中利用电磁暂态仿真技术,GPS同步手段和无线信号传输方法,提出了一种全场景数字化智能变电站测试方法。旨在将合并单元和网络交换机集成到测试范围内,提高测试效率和准确性。首先介绍了全场景方法的原理,然后分析了电磁暂态计算算法中阻尼梯形法的缺陷,从而引出后向欧拉方法,并进一步提出了详细的电磁暂态计算步骤。仿真结果与PSCAD进行了对比的结果表明,该算法准确可靠,满足了数字化智能变电站测试的需要。
In order to solve the defects of low efficiency and small capacity in the secondary system of digital intelligent substation using traditional methods,this paper proposes a full scene digital intelligent substation test method by using electromagnetic transient simulation technology,GPS synchronization method and wireless signal transmission method,which is designed to integrate merging units and network switches into the test area to improve test efficiency and accuracy. Firstly,the principle of the full scene method is introduced. Then the defects of the damping trapezoidal method in the electromagnetic transient calculation algorithm are analyzed,which leads to the backward Euler method, and further detailed electromagnetic transient calculation steps are proposed. The simulation results are compared with PSCAD. The results show that the algorithm is accurate and reliable,and meets the needs of digital intelligent substation testing.
作者
张可
马恩宁
赵宇
李宏斌
杨凯江
ZHANG Ke;MA En-ning;ZHAO Yu;LI Hong-bin;YANG Kai-jiang(Dali Power Supply Bureau,Yunnan Power Grid Company Limited Liability,Dali 671000,China)
出处
《电子设计工程》
2019年第18期78-81,86,共5页
Electronic Design Engineering
关键词
数字化智能变电站
全场景测试方法
电磁暂态计算
后向欧拉方法
digital intelligent substation
full scene test method
electromagnetic transient calculation
backward Euler method
