登录查看更多内容

Last updated on 2024年11月24日

What are the best practices for coordinating the protection and control schemes of a power system?

由人工智能和领英社区提供技术支持

Protection and control schemes are essential for ensuring the reliable and secure operation of a power system. They detect and isolate faults, prevent cascading failures, maintain voltage and frequency stability, and optimize the performance of generation and transmission equipment. However, designing and implementing these schemes requires careful coordination among various devices, settings, and communication channels. In this article, we will discuss some of the best practices for coordinating the protection and control schemes of a power system.

此文章中的业界达人

由社区从 3 条内容中精选。了解更多

Dr.T. Ruban Deva Prakash

Director at Effyies Smart Technologies LLP | Educator & Researcher | Innovator in AI and Sustainable Energy Solutions |…
Rogério Benedicto

Engenheiro Eletricista na CELESC Distribui??o

1 Select appropriate devices

The first step in coordinating the protection and control schemes of a power system is to select the appropriate devices for each component and location. These devices include relays, circuit breakers, switches, transformers, generators, and sensors. Each device has its own characteristics, functions, and limitations that affect its suitability and compatibility with other devices. For example, relays should be chosen based on their speed, sensitivity, selectivity, and reliability, as well as their ability to communicate with other relays and control centers. Circuit breakers should be rated for the expected current, voltage, and fault levels, and have adequate interrupting and reclosing capabilities.

添加您的观点

Dr.T. Ruban Deva Prakash

Director at Effyies Smart Technologies LLP | Educator & Researcher | Innovator in AI and Sustainable Energy Solutions | Postdoctoral Researcher at Eudoxia Research University
举报内容
Best practices for coordinating protection and control schemes in a power system involve several key strategies. First, selective protection ensures that only the faulted section is isolated, minimizing disruption to the rest of the system. Time grading, where relays operate with slight delays, allows the closest device to the fault to act first, with backups stepping in if needed. Redundancy is crucial, providing backup protection in case the primary system fails. Effective communication between devices enhances real-time fault detection and isolation. Finally, regular testing and maintenance of protection devices ensure they perform accurately under different conditions, maintaining system reliability and safety.

已翻译

赞

2 Set proper coordination intervals

The second step in coordinating the protection and control schemes of a power system is to set proper coordination intervals for the devices. Coordination intervals are the time gaps between the operation of different devices that ensure the selective isolation of faults and the minimization of service interruption. For example, if a fault occurs on a transmission line, the relay closest to the fault should operate first, followed by the relay at the other end of the line, and then by the relays at the adjacent lines. The coordination intervals should be calculated based on the fault clearing times, the relay operating times, the circuit breaker opening and closing times, and the system recovery times. The coordination intervals should also account for possible variations in these parameters due to aging, maintenance, or environmental factors.

添加您的观点

Rogério Benedicto

Engenheiro Eletricista na CELESC Distribui??o
举报内容
Na minha experiência, uma atualiza??o rápida do sistema de prote??o, detro da sua zona de prote??o, minimizar as consequências de uma falta, como por exemplo tempo de recupera??o da tens?o e estabilidade da gera??o. Porém devem ser previsto a seletividade com as prote??es a jusante, por é importante a associa??o de elementos de prote??o, exemplo: Fun??o 51 com a Fun??o 50 ou Fun??o 21 com Zona 1 e Zona 2.

已翻译

赞

3 Use standardized communication protocols

The third step in coordinating the protection and control schemes of a power system is to use standardized communication protocols for the devices. Communication protocols are the rules and formats that govern the exchange of information among devices, such as status, measurements, commands, and alarms. Standardized communication protocols ensure interoperability, compatibility, and security among different devices from different manufacturers and vendors. Some of the common communication protocols used in power systems are IEC 61850, DNP3, Modbus, and IEC 60870-5.

添加您的观点

4 Implement adaptive schemes

The fourth step in coordinating the protection and control schemes of a power system is to implement adaptive schemes that can adjust to changing system conditions and requirements. Adaptive schemes are schemes that can modify their settings, actions, or logic based on the feedback from the system or the operator. For example, an adaptive scheme can change the relay settings based on the load flow, the fault level, or the network configuration. An adaptive scheme can also change the control actions based on the voltage or frequency deviations, the contingency scenarios, or the operator commands. Adaptive schemes can enhance the flexibility, efficiency, and resilience of the power system.

添加您的观点

Rogério Benedicto

Engenheiro Eletricista na CELESC Distribui??o
举报内容
A prote??o adaptativa é uma realidade para as Redes Inteligente, uma vez que possuem integra??o com Recursos Energéticos Distribuídos e integra??o com sistemas ADMS. A aplica??o mais simples é a mudan?a de grupo de ajuste pré configurados conforme a condi??o de opera??o do sistema. Porém com a evolu??o tecnologia dos IED deverá permitir a troca dos parametros das fun??es de prote??o, de forma dinamica através dos protocolos de comunica??o padronizados, permitido uma atualiza??o mais adequada para cada condi??o do sistema elétrico.

已翻译

赞

5 Test and verify the schemes

The fifth step in coordinating the protection and control schemes of a power system is to test and verify the schemes before and after installation. Testing and verification are necessary to ensure that the schemes function as intended, comply with the standards and regulations, and do not cause any adverse effects on the power system. Testing and verification can be done using simulation tools, laboratory equipment, or field devices. Some of the methods and tools used for testing and verification are power system analysis software, relay test sets, fault recorders, oscilloscopes, and phasor measurement units.

添加您的观点

6 Monitor and maintain the schemes

The sixth and final step in coordinating the protection and control schemes of a power system is to monitor and maintain the schemes throughout their service life. Monitoring and maintenance are important to ensure that the schemes perform optimally, reliably, and securely, and to identify and correct any faults, malfunctions, or deviations. Monitoring and maintenance can be done using remote or local devices, such as supervisory control and data acquisition (SCADA) systems, smart meters, intelligent electronic devices (IEDs), or handheld devices. Some of the tasks and activities involved in monitoring and maintenance are data collection, analysis, reporting, calibration, troubleshooting, upgrading, and replacing.

添加您的观点

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

添加您的观点

Power Systems

+ 关注

给文章评分

我们借助人工智能创建了此文章。您认为这篇文章怎么样？

很棒不太好

举报此文章

查看全部

What are the best practices for coordinating the protection and control schemes of a power system?

1

2

3

4

5

6

7

1 Select appropriate devices

2 Set proper coordination intervals

3 Use standardized communication protocols

4 Implement adaptive schemes

5 Test and verify the schemes

6 Monitor and maintain the schemes

7 Here’s what else to consider

Power Systems

给文章评分

感谢您的反馈

更多Power Systems相关文章

更多相关阅读内容