Reactive Power Control of Hybrid Multi-Terminal HVDC Systems Considering the Interaction Between the AC Network and Multiple LCCs

Autor:	Gyu-Sub Lee, Seung-Il Moon, Pyeong-Ik Hwang
Rok vydání:	2021
Předmět:	Computer science Direct current Energy Engineering and Power Technology AC power Converters Compensation (engineering) Operator (computer programming) Terminal (electronics) Control theory Reactive power control Electrical and Electronic Engineering MATLAB computer computer.programming_language
Zdroj:	IEEE Transactions on Power Systems. 36:4562-4574
ISSN:	1558-0679 0885-8950
Popis:	A strategy was developed for reactive power control of the line-commutated converters (LCCs) of hybrid multi-terminal high-voltage direct current (MT-HVDC) systems. In the conventional method, the reactive power outputs of hybrid MT-HVDC systems are regulated discontinuously by only using switched shunt devices (SSDs). If continuous reactive power compensation is required, additional devices, including a static compensator (STATCOM), are essential, but these are costly solution. However, in the proposed method, the reactive power outputs of hybrid MT-HVDC systems can be continuously regulated without any additional compensating device by adjusting DC voltage and using SSDs. Therefore, with the proposed method, an HVDC operator can control reactive power outputs and reduce costs, simultaneously. To achieve our objectives, we first describe how to determine the DC voltage set points that regulate the reactive power outputs of multiple grid-connected LCCs, and then realize coordinated control using SSDs. The utility of the method is demonstrated by case studies simulated using PSCAD and MATLAB.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1a4188cfe34c72e1da0d2f2c6e93e39d https://doi.org/10.1109/tpwrs.2021.3056565 Zobrazit plný text záznamu