大规模源网荷友好互动系统实切试验技术

The Actual Load Shedding Verification Test Technology of Large-scale “Source-Grid-Load ” Friendly Interactive System Introduction

简要介绍了大规模源网荷友好互动系统实切试验,提出了基于预置指令下发模式的策略验证技术,基于全局GPS时钟同步的实切试验控制指令传输时间测试技术,以及基于过零点检测和滤波算法的频率分析技术,实现了对系统控制时间、动态频率的准确测量。试验结果表明,实切试验的快速切负荷响应时间和直流闭锁故障瞬间电网频率变化满足要求,有效验证了大规模源网荷友好互动系统的功能设计的可行性。

The actual load shedding verification test of large-scale“source-grid-load”friendly interactive system is introduced.A strategy validation technique based on preset instruction release mode is proposed.A time test method of actual load shedding control command transmission according to global GPS clock synchronization technology,and a frequency measurement method according to zero-crossing detection and digital filter technology are also proposed.The systems control time and dynamic frequency can be accurately measured.Results show that quick load shedding time and frequency changes when DC blocking fault happens meet system requirements.The feasibility of the system function design is validated.