Connecting wind power plant with weak grid - Challenges and solutions

Zhou, Yi; Nguyen, Diem; Kjær, P.C.; Saylors, S.

doi:10.1109/pesmg.2013.6672755

Cited by 62 publications

(29 citation statements)

References 5 publications

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“…One of the characteristics that make the grid secure is to have a high fault current and a low deviation voltage, in other words, a small equivalent impedance. Proposed solutions in the case of integrating wind turbines to weak networks include the deployment of flexible AC transmission Systems (FACTS) devices and the modification of the plant's control systems [56]- [58].…”

Section: B Reactive Power/voltage Supportmentioning

confidence: 99%

“…For instance, Feilat et al [60], simulated the Jordan electric network and concluded that if the wind penetration level goes beyond 40%, the network face fluctuation. A study conducted on the Western Electricity Coordination Council (WECC) network in the USA showed that an annual penetration rate of 35% is technically feasible [56].…”

Section: B Reactive Power/voltage Supportmentioning

confidence: 99%

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Grid Integration Challenges of Wind Energy: A Review

et al. 2020

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The strengthening of electric energy security and the reduction of greenhouse gas emissions have gained enormous momentum in previous decades. The integration of large-scale intermittent renewable energy resources (RER) like wind energy into the existing electricity grids has increased significantly in the last decade. However, this integration poses many operational and control challenges that hamper the reliable and stable operation of the grids. This article aims to review the reported challenges caused by the integration of wind energy and the proposed solutions methodologies. Among the various challenges, the generation uncertainty, power quality issues, angular and voltage stability, reactive power support, and fault ride-through capability are reviewed and discussed. Besides, socioeconomic, environmental, and electricity market challenges due to the grid integration of wind power are also investigated. Many of the solutions used and proposed to mitigate the impact of these challenges, such as energy storage systems, wind energy policy, and grid codes, are also reviewed and discussed. This paper will assist the enthusiastic readers in seeing the full picture of wind energy integration challenges. It also puts in the hands of policymakers all aspects of the challenges so that they can adopt sustainable policies that support and overcome the difficulties facing the integration of wind energy into electricity grids. INDEX TERMS Angular stability, energy storage system, fault ride-through capability, frequency response, grid codes, reactive power support, voltage stability, wind intermittency. • Induction generator (squirrel cage (type 1) and wound rotor (type 2))

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Section: B Reactive Power/voltage Supportmentioning

confidence: 99%

Section: B Reactive Power/voltage Supportmentioning

confidence: 99%

Grid Integration Challenges of Wind Energy: A Review

et al. 2020

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“…It has been well recognised for many years that the instability risk of the grid-connected PMSG is associated with the oscillation modes dominated either by the phase-locked loop (PLL) or the DC voltage control loop of the grid side converter (GSC). When the grid connection of the PMSG weakens, the oscillation modes move towards the right on the complex plane [9][10][11][12]. However, the well-known recognition has been mainly numerically demonstrated and evaluated by study cases.…”

Section: Introductionmentioning

confidence: 99%

Magnifying effect of weak grid connection for a PMSG to induce torsional sub‐synchronous oscillations under the condition of open‐loop modal resonance

Wei

Wang

et al. 2020

IET Renewable Power Generation

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When open-loop modal resonance (OLMR) happens, a grid-connected PMSG may induce torsional sub-synchronous oscillations (SSOs) in a power system. This study examines the magnifying effect of a weak grid connection for the PMSG to induce torsional SSOs under the condition of OLMR. Theoretical analysis is carried out in this study to indicate that the weak grid connection magnifies the impact of OLMR, when the resonant mode of PMSG is dominated by the dynamics of a phaselocked loop (PLL) or the DC voltage control of the grid side converter. The magnifying effect of weak grid connection is analytically proved to have two aspects. First, the magnitude of the real part of the open-loop residue of the PMSG increases when the grid connection weakens. Second, the magnitude of the real part of the resonant open-loop oscillation mode of PMSG decreases under the condition of weak grid connection. According to the OLMR theory, the weakly connected PMSG is more likely to cause growing torsional SSOs when the grid connection is weak. This study helps to understand the mechanism of recent SSO incidents in a practical Chinese power system is analysed. Study cases are presented to demonstrate and evaluate the analysis and conclusions made in this study.

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“…Additionally, the application of phaselocked loop (PLL) increases the difficulty of transient characteristics analysis and FRT control strategy design [5]. How to maintain the reliability and security of power grid is important to the power grid operation when large scale wind turbines are connected to weak grid [6,7].…”

Section: Introductionmentioning

confidence: 99%

Transient characteristics and adaptive fault ride through control strategy of DFIGs considering voltage phase angle jump

Tian

Chi

Wang

et al. 2016

J. Mod. Power Syst. Clean Energy

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Wind power in China has experienced fast development in recent years. However, areas rich in wind power resources are often far away from loads centers, which leads to weak connection between wind turbines and power grid. When a grid fault occurs, new transient characteristics in weak grid integrated with doubly-fed induction generators (DFIGs) may present, such as voltage phase angle jump. Current control strategies for wind turbine with strong grid connection are hard to be adapted under weak gird connection. This paper explores the transient characteristics of DFIGs under voltage phase angle jump through analyzing the operation and control characteristics of DFIGs connected into weak grid when the voltage phase angle jumps. Fault ride through (FRT) control strategy of DFIGs based on adaptive phase-locked loop is proposed to adapt weak grid condition. The reference frame of the proposed strategy will be changed in real-time to track the operation condition of DFIGs according to the terminal voltage, and different phase tracking method is adopted during the grid fault. Field data analysis and time domain simulation are carried out. The results show that voltage phase angle jumps when a grid fault occurs, which weakens the FRT capability of DFIGs, and the proposed FRT control strategy can optimize transient characteristics of DFIGs, and improve the FRT capability of DFIGs.

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Connecting wind power plant with weak grid - Challenges and solutions

Cited by 62 publications

References 5 publications

Grid Integration Challenges of Wind Energy: A Review

Grid Integration Challenges of Wind Energy: A Review

Magnifying effect of weak grid connection for a PMSG to induce torsional sub‐synchronous oscillations under the condition of open‐loop modal resonance

Transient characteristics and adaptive fault ride through control strategy of DFIGs considering voltage phase angle jump

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