Automatic generation control for DC-link power system

Fujita, Goro; Shirai, G.; Yokoyama, Ryuichi

doi:10.1109/tdc.2002.1176835

Cited by 16 publications

(8 citation statements)

References 3 publications

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“…Sanpei et al [42] propose a centralised optimal control for two AC grids connected by a DC-link with the objective of maintaining the power balance. In [43,44], it is analysed the capabilities of these systems to reduce frequency deviations after power disturbances, finding that when the AC grids are only connected by DC-links the contributions to the frequency regulation can be significant.…”

Section: Frequency Supportmentioning

confidence: 99%

Control of multi-terminal HVDC networks towards wind power integration: A review

Bianchi

Domínguez‐García

Gomis‐Bellmunt

2016

Renewable and Sustainable Energy Reviews

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More interconnections among countries and synchronous areas are foreseen in order to fulfil the EU 2050 Target on the renewable generation share. One proposal to accomplish this challenging objective is the development of the socalled European SuperGrid. Multi-terminal HVDC networks are emerging as the most promising technologies to develop such a concept. Moreover, multiterminal HVDC grids are based on highly controllable devices, which may allow not only transmitting power, but also supporting the AC grids to ensure a secure and stable operation. This article aims to present an overview of different control schemes for multi-terminal HVDC grids, including the control of the power converters and the controls for power sharing and the provision of ancillary services. The article also analyses the proposed modifications of the existing control schemes to manage high participation shares of wind power generation in multi-terminal grids.

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Section: Frequency Supportmentioning

confidence: 99%

Control of multi-terminal HVDC networks towards wind power integration: A review

Bianchi

Domínguez‐García

Gomis‐Bellmunt

2016

Renewable and Sustainable Energy Reviews

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“…The initial values of the DC-grid variables are also included in this table. The AC areas are simulated with the full non-linear model described by (1), (5), (6), (7) and (10). For the DC grid, we use (4) to calculate the DC load flow instead of making Assumption 1.…”

Section: Benchmark System and Contingencymentioning

confidence: 99%

“…Hence, the use of HVDC for primary frequency control has been considered in [5,6] for a system with two AC areas.…”

Section: Introductionmentioning

confidence: 99%

“…Although the control laws proposed in [5,6] were heuristically designed, our control scheme is derived from algorithms for the extensively studied consensus problem, which appears in the context of coordination of multi-agent systems [7]. With the proposed scheme, the power injections from the AC areas into the DC grid are coordinated in such a way that the frequency deviations of all the AC areas stay close to each other despite power imbalances in one area.…”

Section: Introductionmentioning

confidence: 99%

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Coordinated primary frequency control among non-synchronous systems connected by a multi-terminal high-voltage direct current grid

Dai

Phulpin

Sarlette

et al. 2012

IET Gener. Transm. Distrib.

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The authors consider a power system composed of several non-synchronous AC areas connected by a multi-terminal high-voltage direct current (HVDC) grid. In this context, the authors propose a distributed control scheme that modifies the power injections from the different AC areas into the DC grid so as to make the system collectively react to load imbalances. This collective reaction allows each individual AC area to downscale its primary reserves. The scheme is inspired by algorithms for the consensus problem extensively studied by the control theory community. It modifies the power injections based on frequency deviations of the AC areas so as to make them stay close to each other. A stability analysis of the closed-loop system is reported as well as simulation results on a benchmark power system with five AC areas. These results show that with proper tuning, the control scheme makes the frequency deviations converge rapidly to a common value following a load imbalance in an area.

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“…Converter control algorithms have been proposed for the special case of two AC areas, regulating the power exchanged on their single link, see e.g. Bhamidipati and Kumar (1990), Fujita, Shirai, and Yokoyama (2002), Li, Okada, Watanabe, and Mitani (2010), Sanpei, Kakehi, and Takeda (1994), Sterpu and Tuan (2009) and Yu, Shen, Zhu, Zhao, and Zhu (2002). In the present paper, we propose and analyze two cooperative primary frequency control algorithms for arbitrary networks, with power or voltage steering at the converters.…”

Section: Introductionmentioning

confidence: 99%

Cooperative frequency control with a multi-terminal high-voltage DC network

et al. 2012

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a b s t r a c tWe consider frequency control in power systems made of several non-synchronous AC areas connected by a multi-terminal high-voltage direct current (HVDC) grid. We propose two HVDC control schemes to make the areas collectively react to power imbalances, so that individual areas can schedule smaller power reserves. The first scheme modifies the power injected by each area into the DC grid as a function of frequency deviations of neighboring AC areas. The second scheme changes the DC voltage of each converter as a function of its own area's frequency only, relying on the physical network to obtain a collective reaction. For both schemes, we prove convergence of the closed-loop system with heterogeneous AC areas.

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Automatic generation control for DC-link power system

Cited by 16 publications

References 3 publications

Control of multi-terminal HVDC networks towards wind power integration: A review

Control of multi-terminal HVDC networks towards wind power integration: A review

Coordinated primary frequency control among non-synchronous systems connected by a multi-terminal high-voltage direct current grid

Cooperative frequency control with a multi-terminal high-voltage DC network

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