含风电场的电网电能质量评估及监测装置整定方法

Grid Power Quality Assessment with Wind Farm and the Setting Method of Monitoring Device

摘要: 为保证风电场接入电网后系统的电能质量满足要求，需要对其进行电能质量评估和测试；同时在并网接入点装设电能质量监测装置。文中首先提出了对风电场电能质量监测装置进行整定所需的数据，进而针对某一实际风场，根据电能质量国标中的规定及计算方法对其接入点装设的监测装置各监测量进行整定，包括电压偏差和谐波等；并通过建模仿真额定运行及风速扰动下的电能质量情况，与整定值进行比较分析。结果表明，风速扰动下的风场电能质量若不能完全满足要求，则需进行相应的改善。

Abstract: It is necessary to evaluate and test the power quality (PQ) of wind farm to safeguard it to meet the PQ re- quirements after its access to grid, so that PQ monitoring device is installed in the grid access point. The data required for the setting of PQ monitoring device is listed first, then an example of the setting method of monitoring parameters of PQ monitoring devices is provided based on the provision and calculation method in National Standards, including voltage deviation and harmonics, etc. Through simulation and analysis, results are compared with the setting values. Finally, if the PQ of wind farm can not satisfy the requirements when wind speed disturbance happens, then PQ im- provements should be taken.