Transmission Line Protection for Systems With Inverter-Based Resources – Part I: Problems
Transmission Line Protection for Systems With Inverter-Based Resources – Part I: Problems
复制标题
具有基于逆变器的资源的系统的传输线保护 - 第一部分：问题
DOI：
10.1109/tpwrd.2020.3019990
复制
发表时间：
2021
影响因子：
4.4
通讯作者：
N. Fischer
中科院分区：
文献类型：
--
作者：
R. Chowdhury;N. Fischer
在电力系统故障期间，基于逆变器的资源与同步发电源的响应不同，这对线路保护可靠性提出了挑战。为了了解可靠性方面的挑战，桑迪亚国家实验室和北美电力可靠性公司（NERC）与四家逆变器制造商（混合3型风能，4型风能和光伏太阳能）和两家北美保护继电器制造商进行了合作研究。作为这项研究的一部分，电磁暂态程序（EMTP）与“实码”模型，代表逆变器固件被用来调查的保护继电器响应故障的建模电力系统与不同的逆变器类型。从研究中获得的电流和电压，然后通过线路继电器硬件与传统发电系统的典型设置回放。保护继电器表现出预期的可靠性挑战，但在电力系统故障期间提供了对基于逆变器的资源的行为的洞察。在本文中，我们分享了一些具有挑战性的情况下，不同的线路保护方案的响应。利用从各种事件记录的洞察力，本文的第二部分显示了如何继电器设置可以被修改，以获得可靠性的大幅提高。
Inverter-based resources respond differently than synchronous generation sources during power system faults, challenging line protection reliability. To understand the reliability challenges, Sandia National Laboratories and North American Electric Reliability Corporation (NERC) led a collaborative study with four inverter manufacturers (mix of Type 3 Wind, Type 4 Wind, and PV Solar) and two North American protective relay manufacturers. As part of this study, an electromagnetic transients program (EMTP) with “real-code” models representing inverter firmware was used to investigate the protective relay response to faults on the modeled power system with the different inverter types. The currents and voltages obtained from the study were then played back through line relay hardware with settings typical of systems with conventional generation. The protective relays exhibited the expected reliability challenges but provided insight into the behavior of inverter-based resources during power system faults. In this paper, we share some of the challenging cases with the responses of the different line protection schemes. Using insight from the various event records, Part II of this paper shows how relay settings can be modified to obtain a substantial improvement in reliability.