电网友好型风电场低电压穿越建模、仿真与验证研究

项目名称： 电网友好型风电场低电压穿越建模、仿真与验证研究

项目编号： No.51207039

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电气科学与工程学科

项目作者： 韩平平

作者单位： 合肥工业大学

项目金额： 24万元

中文摘要： 随着大规模风电的并网运行，风电机组和风电场的低电压穿越（LVRT）能力已成为亟待解决的问题。本项目通过分析电网故障期间双馈和直驱式风电机组同电网之间的交互作用机理，并以现代风电并网导则为依托，深入研究了风电机组动态无功功率控制策略、电网电压支撑技术方案、风电机组变流器保护技术和提高风电机组LVRT能力的硬件电路控制。并基于以上研究，在软件平台上开发了双馈和直驱式风电机组LVRT仿真模型，通过与试验结果和风电场实测数据进行对比验证，进一步修正风电机组LVRT模型，确保模型的准确性和实用性。在单机LVRT模型基础上，进一步建立了含同一类型和不同类型风电机组的风电场LVRT模型，提出低电压穿越期间双馈和直驱式风电机组无功功率最优协调控制策略，为大型风电场的并网稳定运行提供积极的理论指导和技术支持。

中文关键词： 电网友好型风电场；低电压穿越；双馈式风电机组；直驱式风电机组；协调控制

英文摘要： With the connection of large-scale wind farms to the grid, the low voltage ride-through (LVRT) quality of single wind turbine generators and wind farms has become an urgent problem. By fully considering grid requirements for the integration of wind turbine generators, this research has studied the interaction of doubly-fed induction generator (DFIG) and direct drive permanent magnet synchronous generator (PMSG) with the grid during fault, dynamic reactive power control strategies, technical solution of grid voltage support, protection of converters and hardware circuit control aiming at enhancing the LVRT ability of wind turbine generator. Based on the abovementioned analysis, LVRT models of DFIG and PMSG are developed in software platform and further modified through the comparison between experimental results and real test data to ensure their accuracy and practical applicability. On the basis of single wind turbine generator LVRT model, LVRT models of wind farms containing the same type or different types of wind turbine generators have been further established, and strategies for reactive power optimal coordinated control of DFIG and PMSG during the period of low voltage have been put forward, which provide a positive guidance in theory and technical support for the safe and grid friendly operation of large

英文关键词： Grid-friendly wind farm；Low voltage ride through (LVRT)；Doubly-fed induction generator(DFIG)；Permanent magnet sychronous generator(PMSG)；Coordinate reactive power control strategy