Converter-driven stability constrained unit commitment considering dynamic interactions of wind generation

Luo, Jianqiang; Teng, Fei; Bu, Siqi; Chu, Zhongda; Tong, Ning; Meng, Anbo; Yang, Ling; Wang, Xiaolin

doi:10.1016/j.ijepes.2022.108614

Cited by 5 publications

(2 citation statements)

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“…References [30] and [31] paid attention to the time-varying FR capabilities of WTG, but WTG only provided a single inertial [30] or droop [31] response. The dynamic interactions of WTG were built into a two-stage frequency-constrained UC in [32]. The contribution of WTG to frequency support was analyzed in a robust scheduling model [33].…”

Section: Nomenclaturementioning

confidence: 99%

Integrated Frequency-constrained Scheduling Considering Coordination of Frequency Regulation Capabilities from Multi-source Converters

Li,

Qiao,

et al. 2024

Journal of Modern Power Systems and Clean Energy

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As the proportion of renewable energy (RE) increases, the inertia and the primary frequency regulation (FR) capability of the power system decrease. Thus, ensuring frequency security in the scheduling model has become a new technical requirement in power systems with a high share of RE. Due to a shortage of conventional synchronous generators, the frequency support of multi-source converters has become an indispensable part of the system frequency resources, especially variable-speed wind turbine generation (WTG) and battery energy storage (BES). Quantitative expression of the FR capability of multi-source converters is necessary to construct frequency-constrained scheduling model. However, the frequency support performance of these converter-interfaced devices is related to their working states, operation modes, and parameters, and the complex coupling of these factors has not been fully exploited in existing models. In this study, we propose an integrated frequency-constrained scheduling model considering the coordination of FR capabilities from multi-source converters. Switchable FR control strategies and variable FR parameters for WTG with or without reserved power are modeled, and multi-target allocation of BES capacity between tracking dispatch instruction and emergency FR is analyzed. Then, the variable FR capabilities of WTG and BES are embedded into the integrated frequency-constrained scheduling model. The nonlinear constraints for frequency security are precisely linearized through an improved iteration-based strategy. The effectiveness of the proposed model is verified in a modified IEEE 24-bus standard system. The results suggest that the coordinated participation of BES and WTG in FR can effectively reduce the cost of the scheduling model while meeting frequency security constraints.

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Section: Nomenclaturementioning

confidence: 99%

Integrated Frequency-constrained Scheduling Considering Coordination of Frequency Regulation Capabilities from Multi-source Converters

Li,

Qiao,

et al. 2024

Journal of Modern Power Systems and Clean Energy

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“…In recent years, transient stability analysis of WFs integrated power systems has received increasing attention in terms of power system topologies, wind power generation technologies, fault types, and location as well as innovative models, methods, and approaches [16][17][18][19][20][21][22][23]. In this way, innovative frameworks follow the transient stability enhancement of a wind-penetrated power system through the power loss index method and the self-sorting analytical approach [16], Gauss-Hermite integral-based multi-point estimation method [17], two-stage model [18], supervisory adaptive predictive control [19], hybrid adaptive control of flywheel energy storage units [20], aggregated model [21], datadriven self-tuning additional sliding mode controller [22], and practical unit commitment framework constrained by the requirement of converter-driven stability [23].…”

Section: Introductionmentioning

confidence: 99%

Transient stability analysis of DFIG-based wind farm-integrated power system considering gearbox ratio and reactive power control

et al. 2023

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Nowadays, integration of large-scale wind farms (WFs) into power systems is experiencing rapid growth. As this rapid integration can affect transient stability significantly, employing doubly fed induction generator (DFIG)-based wind turbines, which have shown better behavior regarding system stability, has attracted much attention. This research contributes to the literature by investigating the transient stability of the power system with increasing penetration of DFIG-based WFs. In the proposed framework, the current-balance form is utilized for the network equations, and in this way, transient stability is performed using time-domain simulation. According to the simulation results, when the rate of wind power generation exceeds 0.7 per-unit, the increasing trend of the critical clearing time (CCT) is reversed and the CCT decreases greatly with the increased wind power penetration. In addition, the reactive power compensation by DFIG, the gearbox ratio, the power system strength, and DFIG parameters are comprehensively investigated as effective parameters on transient stability. Since the rated rotor speed of DFIG significantly impacts the electrical torque and machine currents, the reduction of the rated rotor speed due to the change of the gearbox ratio has been investigated as one of the effective factors to improve the transient stability. The simulation results demonstrate the effectiveness of the proposed approach in improving power system transient stability.

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Small-signal stability constrained unit commitment based on decomposition and SQP-GS

Ran

et al. 2023

Electric Power Systems Research

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Converter-driven stability constrained unit commitment considering dynamic interactions of wind generation

Cited by 5 publications

References 50 publications

Integrated Frequency-constrained Scheduling Considering Coordination of Frequency Regulation Capabilities from Multi-source Converters

Integrated Frequency-constrained Scheduling Considering Coordination of Frequency Regulation Capabilities from Multi-source Converters

Transient stability analysis of DFIG-based wind farm-integrated power system considering gearbox ratio and reactive power control

Small-signal stability constrained unit commitment based on decomposition and SQP-GS

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