Investigation of photovoltaic inverter loss of phase protection

光伏逆变器缺相保护的探讨

• 批准号: 516278-2017
• 负责人: Wang, Xiaoyu
• 金额: $ 1.82万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640034
• 关键词: Investigation; photovoltaic; inverter; loss; phase

Nowadays, the grid-connected renewable distributed generation (DG) is fast growing in Ottawa. To promotethe integration of DG, Hydro Ottawa Limited (HOL), the local distribution company in the City of Ottawa,established numbers of criteria and requirements for DG connection according to the published standards suchas IEEE Std. 1547 and HOL's special concerns. A separate loss-of-phase (LOP) protection device is such anadditional requirement that DG manufacturers and owners often complain since no other utilities in Canadahave this requirement. This requirement increases the cost of DG owner, manufacturer production test, andutility commissioning test for DG integration in Ottawa. iSolara Solar Power Limited (iSolara) is currentlydeveloping high performance low-cost grid-connected photovoltaic (PV) generation systems. Through thisNSERC Engage project, iSolara and Carleton will investigate the necessity of a separate LOP protection devicefor grid-connection of inverter-based DG. The cost of PV installation in Ottawa will be reduced if the separateLOP protection device is proved to be unnecessary for the inverters which have already satisfied the currentpublished standards.The outcome of this project will help iSolara and HOL to understand the impact of intermediate transformerand multiple-inverter configuration on inverter-based DG LOP protection. The investigation results are criticalfor iSolara and HOL to make informed, strategic and effective investment in DG integration technology andinfrastructure in the future. Essentially, the project will be beneficial for utility companies, DG manufacturesand standard makers to act in a coordinated and proactive manner to ensure the successful integration of DG inCanada.

目前，可再生分布式发电(DG)正在渥太华迅速发展。为了促进分布式电源的整合，渥太华市的当地配电公司海德鲁渥太华有限公司(HOL)根据IEEE STD等公布的标准，制定了一些分布式电源连接的标准和要求。1547和HOL的特别关注。单独的失相(LOP)保护装置是这样一种额外的要求，DG制造商和所有者经常抱怨，因为加拿大没有其他公用事业公司有这一要求。这一要求增加了渥太华DG集成的DG业主、制造商生产测试和实用调试测试的成本。ISolara Solar Power Limited(ISolara)目前正在开发高性能、低成本的并网光伏发电系统。通过这个NSERC Engage项目，iSolara和Carleton将调查是否有必要为基于逆变器的分布式发电的并网提供单独的LOP保护装置。如果已经满足现行标准的逆变器不需要单独的LOP保护装置，那么在渥太华安装光伏的成本将会降低。该项目的结果将有助于iSolara和HOL了解中间变压器和多个逆变器配置对基于逆变器的DG LOP保护的影响。调查结果对于iSolara和HOL未来在DG集成技术和基础设施方面进行知情、战略和有效的投资至关重要。从本质上讲，该项目将有利于公用事业公司、DG制造商和标准制定者以协调和积极的方式采取行动，确保DG在加拿大的成功整合。