电器与能效管理技术 ›› 2025, Vol. 0 ›› Issue (11): 72-77.doi: 10.16628/j.cnki.2095-8188.2025.11.010

• 检测与试验 • 上一篇    下一篇

用于构网型光伏逆变器并网检测的工况模拟方法

李新强1, 王忠2, 王嘉石1   

  1. 1 上海电器科学研究所(集团)有限公司, 上海 200063
    2 中国合格评定国家认可中心, 北京 100028
  • 收稿日期:2025-08-12 出版日期:2025-11-30 发布日期:2025-12-11
  • 作者简介:李新强(1982—),男,高级工程师,主要从事新能源与智能电网产品及系统检测认证研究。|王 忠(1974—),男,高级工程师,主要从事实验室认可评审技术与管理优化、新型电力系统检测领域认可关键技术研究。|王嘉石(1993—),男,工程师,主要从事电能转换装置用功率半导体器件测评技术研究。
  • 基金资助:
    国家市场监督管理总局科技计划项目(2024MK224)

Operation Condition Emulation Method for Grid-Connection Testing of Grid-Forming Photovoltaic Inverters

LI Xinqiang1, WANG Zhong2, WANG Jiashi1   

  1. 1 Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shanghai 200063, China
    2 China National Accreditation Service for Conformity Assessment, Beijing 100028, China
  • Received:2025-08-12 Online:2025-11-30 Published:2025-12-11

摘要:

构网型控制技术通过逆变器控制系统模拟同步机惯量特性,为提升电网动态稳定性提供了有效解决方案。在光伏逆变器中,借助直流电压控制,利用直流电容中储存的能量实现惯量模拟。现有测试用电网模拟器普遍仅关注交流侧电网特性模拟,忽略光伏逆变器直流侧电源特性的影响,难以满足构网型光伏逆变器交直流协同控制策略的测试需求,提出交直流双端口工况模拟测试平台创新方案。通过同步模拟交流侧电网电压、频率与阻抗特性及直流侧光伏发电动态特性,构建了一种面向构网型光伏逆变器并网检测的全工况模拟方法。

关键词: 构网型光伏逆变器, 工况模拟, 电网模拟, 发电侧模拟

Abstract:

Grid-forming control technology provides an effective solution for improving the dynamic stability of power grids by simulating the inertia characteristics of synchronous machines through converter control systems.In photovoltaic inverters,the inertia simulation is achieved by controlling the DC voltage and utilizing the energy stored in the DC capacitor.Conventional grid simulators often focus on AC-side grid characteristics ignoring the impact of the DC-side power source for photovoltaic inverters,which makes it unable to meet the testing requirements for AC-DC coordinated control strategies of grid forming photovoltaic inverters.An innovative scheme for an AC-DC dual-port operating condition simulation test platform is proposed.By synchronously simulating the AC-side grid voltage,frequency and impedance characteristics,as well as the DC-side photovoltaic power generation dynamic characteristics, a full-condition simulation method for grid-connected testing of grid-forming photovoltaic inverters is constructed.

Key words: grid-forming photovoltaic inverter, operation condition simulation, grid simulation, generator-side simulation

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