NDLI: Dynamic reactive power optimisation of UHVDC converter station considering coordination of synchronous condenser and system filtering requirements

Content Provider	IET Digital Library
Author	Mo, Jingshan Yan, Wei Ren, Zhouyang Xiao, Fan Wang, Tao
Abstract	The reactive power compensation of large-capacity synchronous condensers in a ultrahigh-voltage direct current (UHVDC) converter station is not yet fully utilised, and there is no method for achieving effective coordination between synchronous condensers and DC systems. To realise their coordinated control of reactive power and voltage, a dynamic reactive power optimisation model that considers the coordination of synchronous condenser and filtering requirements of system is proposed in this study. The model considers the constraints of the variable steady reactive power capacity of synchronous condenser by taking into account its dynamic reserve demand, the minimum filter capacity of the system, and the switching sequence of AC filters and shunt capacitors. The model is solved by a two-stage hybrid intelligent algorithm based on the interior point method and the differential evolution algorithm. Further, the effectiveness of the proposed method is verified by the example of a UHVDC sending converter station in Northeast China. The simulation results show that the proposed model can greatly reduce the number of times discrete devices enter operation in a converter station under satisfying the dynamic reactive power reserve of the synchronous condenser, providing a basis for the coordinated optimal control of synchronous condensers and DC systems.
Starting Page	4563
Ending Page	4570
Page Count	8
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 20, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/20
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.0633
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-07-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System D.C. Transmission DC System Dynamic Reactive Power Optimisation Model Dynamic Reactive Power Reserve Evolutionary Computation HVDC Power Converter HVDC Power Transmission Large-capacity Synchronous Condensers Minimum Filter Capacity Optimal Control Optimisation Optimisation Technique Power And Energy Control Power System Control Reactive Power Reactive Power Compensation Reactive Power Control Synchronous Condenser System Filtering Requirements UHVDC Converter Station Considering Coordination UHVDC Sending Converter Station Ultrahigh-voltage Direct Current Converter Station Variable Steady Reactive Power Capacity Voltage Control
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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