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Load-frequency control management in island operation

机译:孤岛运行中的负载频率控制管理

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This paper analyzes particular cases of active power and frequency control strategies in island operation when a part of the system is electrically separated from the main interconnected system. This operation condition occurs rarely on a transmission system level; however, the control systems on all levels should be adjusted accordingly and transmission system operators should have a plan prepared to manage such an extraordinary situation. A number of possibilities for the cooperation of turbine control modes and supervisory control of frequency and active power are investigated and evaluated in the paper. A new mode for LFC suitable for island operation is proposed and tested as well. All of the examined possibilities are simulated by a dynamic power system model. The results prove correctness of the proposed solution for operating turbine control in a decentralised way in the island operation. Following the successful transition to island operation, the new LFC mode can be used for centralised automatic frequency control during the island resynchronisation phase.
机译:当系统的一部分与主互连系统电气分离时,本文分析了孤岛运行中有功功率和频率控制策略的特殊情况。此操作条件很少在传输系统级别上发生。但是,各级控制系统都应作相应调整,传动系统操作人员应制定计划以应对这种特殊情况。本文研究并评估了涡轮机控制模式的协作以及对频率和有功功率的监督控制的多种可能性。提出并测试了一种适用于孤岛运行的LFC新模式。所有检查的可能性均由动态电源系统模型进行仿真。结果证明了所提出的解决方案在孤岛运行中以分散方式运行涡轮机控制的正确性。成功过渡到孤岛运行之后,新的LFC模式可在孤岛重新同步阶段用于集中式自动频率控制。

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