Secure and dependable protection relay behaviour in extremely high loaded transmission systems
Secure and dependable protection relay behaviour in extremely high loaded transmission systems
复制标题
极高负载传输系统中安全可靠的继电保护行为
DOI：
10.1049/cp.2020.0015
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Jaeger J.
中科院分区：
文献类型：
--
作者：
Schindler;Prommetta;Jaeger J.
电网的当前发展要求优化利用现有电网。为了实现这一点，需要在电网中实施更多的测量、通信、计算、主动控制设备和自动化。因此，这需要极高负载的传输走廊。虽然从电网控制的角度来看，这种操作是一个巨大的挑战，但保护系统也需要在这种情况下安全可靠地运行。本文以距离保护为例，讨论了传统保护系统受极端负载影响的各种方式。在此之后，提出了许多现有的解决方案，这些挑战。所描述的方法可以被分类为直接改善继电器的行为的那些方法和涉及控制中心中的保护拥塞考虑的那些方法。它们的范围从小的调整，如改变安全系数，自适应技术，以避免恒定的最坏情况假设，修改测量算法和全新设计的故障检测和定位方法。极高负荷电网中安全可靠的保护系统在未来很可能会变得越来越重要。
Current developments in the electricity grids demand for an optimal utilization of existing grids. To make this possible, more measurement, communication, computing, active control equipment and automation needs to be implemented into the grids. As a consequence, this entails extremely high loaded transmission corridors. While such operation is on the one hand a big challenge from a grid control perspective, the protection systems too need to behave securely and dependably under such circumstances. This work discusses the various ways in which conventional protection systems are influenced by extreme loading using the example of distance protection. After that, numerous existing solution approaches to these challenges are presented. The described methods can be categorized in those that directly improve the behaviour of the relays and those that concern the protection congestion consideration in the control centres. They range from small adjustments like changed safety factors to adaptive techniques to avoid constant worst-case assumptions to modified measurement algorithms and completely new designed fault detection and localization approaches. It is highly probable that the field of secure and dependable protection systems in extremely high loaded grids will be of increasing importance in the future.