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Synthetic Inertia-Power Sharing in High Renewable Power Grids Through Vehicle-to-Grid Topology
(2024-01-01)
Kerdphol, Thongchart
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Surinkaew, Tossaporn
;
Ngamroo, Issarachai
With the increasing integration of renewable energy sources (RESs), the overall inertia of the power system is expected to decline. The remaining inertia is crucial for regulating system frequency and mitigating excessive rates of change. The deployment of dispatchable loads, such as electric vehicles (EVs), offers a promising solution. This paper presents a synchronized inertia support framework utilizing a vehicle-to-grid (V2G) system through its bidirectional chargers. This concept is realized by integrating a large-scale energy storage system (ESS) composed of controllable EVs into an enhanced inertia emulation structure. The synthetic inertia control strategy has been refined to account for EV user convenience and synchronized state of charge (SOC) management, facilitating synchronized inertia power sharing. This approach enhances the grid's dynamic performance and resilience. Simulation results demonstrate that the proposed method effectively delivers rapid inertia support from the onboard ESS of EVs, improving frequency stability.
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Design optimization of wind power planning for a country with low-medium-wind-speed profile
(2008-10-13)
Chompoo-Inwai, Chai
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Chompoo-Inwai, Chow
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Leelajindakrairerk, Monthon
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Banjongjit, Sulee
;
Fuangfoo, Pradit
The emerging energy crisis resulting from a high price of crude oil has drawn attention about renewable energy all over the world. Thailand is a developing country located at the heart of Southeast Asia, with about 66 million of population as of 2006. The electricity supply industry structure under the government of Thailand has been managed by the Electricity Generating Authority of Thailand, the Metropolitan Electricity Authority, and the Provincial Electricity Authority for almost 50 years. According to the 2004 Power Development Plan, the country would have generation reserve at a marginal of 15%. Due to the rapid economic growth and difficulty in building new centralized generating facilities, this has the potential to create a security issue of electricity energy shortage and may develop a severe system blackout. Renewable energy issues have been widely discussed and debated over the country. Although solar energy is the most prominent renewable energy source due to the appropriate geographic of Thailand, it is still considered as a low-density energy source which requires a large area of installation. Therefore, for the long-term investment, wind power seems to be a good candidate because it is quick to install, needs no fuel cost, and is environment friendly. Therefore, this paper investigates the impact of the penetration level of wind power generation to be integrated into the Thailand system. System stability has been observed in various system configuration changes due to different control strategies of wind farms. The economic analysis of wind-farm investment has been also considered. © 2008 IEEE.
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H∞ loop shaping-based robust control design of PSS and TCSC for dynamic stability enhancement
(2008-10-06)
Cuk Supriyadi, A. N.
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Ngamroo, I.
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Kaitwanidvilai, S.
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Kunakorn, A.
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Hashiguchi, T.
In this paper, the robust control design of power system stabilizer (PSS) and thyristor controlled series capacitor (TCSC) for enhancement of power system dynamic stability is proposed. To take system uncertainties such as variations of system parameters, several loading conditions etc., into account, the normalized coprime factorization is used to represent unstructured uncertainties in the system. The H∞ loop shaping technique is applied to design robust PSS and TCSC controllers. Simulation results in a single machine infinite bus system show that the performance and robustness of the proposed H∞ controllers of PSS and TCSC are superior to those of the conventional PSS and TCSC. © 2008 IEEE.
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Design optimization of wind power planning for a country of low-medium wind speed profile
(2007-12-01)
Chompoo-inwai, Chai
;
Banjongjit, S.
;
Leelajindakrairerk, M.
;
Faungfoo, P.
;
Lee, Wei Jen
the emerging energy crisis results from a high-price of crude-oil has drawn attention about renewable energy all over the world. Thailand is a developing country located at the heart of Southeast Asia with about 66 million of population as of 2006. The ESI structure under the government of Thailand has been managed by the Electricity Generating Authority of Thailand (EGAT), Metropolitan Electricity Authority (MEA), and Provincial Electricity Authority (PEA) for almost 50 years. According to the 2004 Power Development Plan (PDP), the country would have generation reserve at a marginal of 15 percent. Due to the rapid economic growth and difficulty in building new centralized generating facilities, this has the potential to create a security issue of electricity energy shortage and may develop a severe system blackout. Renewable energy issues have been widely discussed and debated over the country. Although solar energy is the most prominent renewable energy source due to the appropriated geographic of Thailand, it still considered as a low-density energy source which requires a large area of installation. Therefore, for the long term investment, wind power seem to be a good candidacy since it is quick to get permission, need no fuel cost, and environmental friendly. Therefore, this paper investigates the impact of penetration level of wind powered generation to be integrated into Thailand system. System stability has been observed in various system configurations change due to different control strategies of wind farms. The economics analysis of wind farm investment has been also considered. © 2007 IEEE.

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