基于解析计算的继电保护装置三维仿真系统的开发和应用

Development and application of a three-dimensional simulation system for relay protection devices based on analytical calculation

目前继电保护装置三维仿真系统的定值传输能力存在波长变化异常、故障特征数据冗杂等现象。研究创新性地设计了一种适用于继电保护装置三维仿真系统的数字动态模型方法,重点介绍了数字动态模型下的继电故障选取特征、继电保护定值约束条件、继电保护定值优化。研究所给出的校验方法传输波形与理想传输波形更为接近,同时波动范围更小,波幅为0~0.94 m,而其余三种校验方法的传输波形和理想波形相差较大。不同测试样本数量和单位校验时长下的校验效率和校验误差均满足理想数值。继电保护装置三维仿真系统的动态数字模型定值校验方法能抑制继电波波动变化能力,同时提升配电网环境下继电波定值传输能力,进而为电力行业电网安全的保障提供可靠性的支持。

At present,the fixed value transmission capability of the 3D simulation system for relay protection devices is difficult to achieve safe operation of the transmission network,resulting in abnormal changes in transmission wavelength and redundant fault feature data.A digital dynamic model method suitable for the three-dimensional simulation system of relay protection devices was innovatively designed through research.Relay protection verification was achieved through analytical calculation methods,with a focus on the selection characteristics of relay faults,constraint conditions of relay protection settings,and optimization of relay protection settings under the digital dynamic model.The calibration method provided by the research institute has a transmission waveform that is closer to the ideal transmission waveform,with a smaller fluctuation range of 0-0.94m,while the transmission waveforms of the other three calibration methods differ significantly from the ideal waveform.The verification efficiency and error under different test sample numbers and unit verification duration meet ideal values.The dynamic digital model constant value verification method of the three-dimensional simulation system for electrical protection devices can to some extent suppress the fluctuation and change ability of relay waves,while greatly improving the transmission ability of relay wave constant values in the distribution network environment,thereby providing reliable support for the security of the power industry grid.