Optimal reactive power management for transmission connected distribution grid with wind farms

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Original languageEnglish
Title of host publication2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016
Pages1076-1082
Number of pages7
ISBN (electronic)9781509043033
Publication statusPublished - 1 Nov 2016

Abstract

This work presents an optimal reactive power management strategy for the operation of a transmission connected distribution grid with high share of wind power. Main control objective is minimizing reactive power exchange with the overlaying transmission grid. For this purpose, a mixed integer non-linear optimal power flow (MINLP-OPF) problem is formulated utilizing reactive power capabilities of wind farms and transformer tap-changer positions whilst respecting voltage limitations. Loss minimization and flat voltage profile are possible secondary sequential optimization objectives. The proposed control is evaluated for a real German 110-kV distribution grid with 1.6 GW installed wind power and yearly time series. Throughout a year, reactive power exchange with the transmission grid can be reduced by 96.8% while minimizing the increase in active power losses to 11.1%. Choosing voltage profile as secondary objective, reactive power exchange is reduced by 96.5% while quadratic deviation from nominal voltage is reduced by 30.8%.

Keywords

    distributed power generation, integer programming, load flow, nonlinear programming, power system management, reactive power control, wind power plants, quadratic deviation, secondary objective, active power losses, yearly time series, German 110-kV distribution grid, secondary sequential optimization objectives, flat voltage profile, loss minimization, voltage limitations, transformer tap-changer positions, wind farms, reactive power capabilities, MINLP-OPF problem, mixed integer nonlinear optimal power flow problem, overlaying transmission grid, reactive power exchange, wind power, transmission connected distribution grid, reactive power management strategy, voltage 110 kV, power 1.6 GW, Reactive power, Optimization, Load flow, Software, Load modeling, Wind farms, Wind power generation, distributed generation, optimal power flow, wind power grid integration, Wind power grid integration

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Optimal reactive power management for transmission connected distribution grid with wind farms. / Stock, D. S.; Venzke, A.; Löwer, L. et al.
2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016. 2016. p. 1076-1082 7796535.

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Stock, DS, Venzke, A, Löwer, L, Rohrig, K & Hofmann, L 2016, Optimal reactive power management for transmission connected distribution grid with wind farms. in 2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016., 7796535, pp. 1076-1082. https://doi.org/10.1109/isgt-asia.2016.7796535
Stock, D. S., Venzke, A., Löwer, L., Rohrig, K., & Hofmann, L. (2016). Optimal reactive power management for transmission connected distribution grid with wind farms. In 2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016 (pp. 1076-1082). Article 7796535 https://doi.org/10.1109/isgt-asia.2016.7796535
Stock DS, Venzke A, Löwer L, Rohrig K, Hofmann L. Optimal reactive power management for transmission connected distribution grid with wind farms. In 2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016. 2016. p. 1076-1082. 7796535 doi: 10.1109/isgt-asia.2016.7796535
Stock, D. S. ; Venzke, A. ; Löwer, L. et al. / Optimal reactive power management for transmission connected distribution grid with wind farms. 2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016. 2016. pp. 1076-1082
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