Options for emergency control of power grids with high penetration of renewables

Vu, Thanh Long; Turitsyn, Konstantin

doi:10.1109/icset.2016.7811749

Cited by 11 publications

(1 citation statement)

References 6 publications

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“…Firstly, these are the tasks associated with an increase in short-circuit currents, which may require replacement of high-voltage circuit breakers, if their breaking capacity is insufficient, or the installation of current-limiting devices (isolation transformers) [12]. Secondly, the tasks associated with the need to adjust the algorithms of operation and settings for relay protection devices and emergency control systems in the adjacent network [13,14].…”

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confidence: 99%

Consideration of Distinguishing Design Features of Gas-Turbine and Gas-Reciprocating Units in Design of Emergency Control Systems

et al. 2021

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Modern gas-turbine units (GTUs) and gas-reciprocating units (GRUs) have found a wide use at power plants, including distributed generation facilities, running on gaseous fuel. The design features of these generating units have a considerable effect on the nature and parameters of transient processes due to emergency disturbances in the adjacent network. The study shows that single-shaft gas-turbine and gas-reciprocating units do not allow even short-term considerable frequency drops. These schemes and operating conditions arise due to emergency active power shortages when the connection between the power plant and the power system weakens due to repair conditions or islanded operation. The paper presents the results of transient process calculations for operating power plants (distributed generation facilities), which make it possible to identify the unfavorable properties of GTUs and GRUs. The results show that two-shaft (three-shaft) GTUs and GRUs can switch to out-of-step conditions even when short-circuits in the adjacent network are cleared with high-speed relay protection devices. The features of out-of-step conditions and the admissibility of their short-term duration for the spontaneous restoration of generators’ synchronization are considered. The findings suggest that considering the fundamental design features of generating units provides informed technical decisions on equipping power plants (distributed generation (DG) facilities) and the adjacent network with efficient emergency control systems.

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confidence: 99%