Impact of large scale wind penetration on power system frequency stability

Qureshi, Ubaid; Iqbal, Sheikh Javed

doi:10.1109/icecct.2017.8117971

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…As far as the short-term frequency dynamics are concerned, the generators in the system fall into three categories, namely thermal (nuclear included) generators, hydro generators and power converter-based renewable generators (mostly wind and PV in ECPG). In China, renewable generators are not responsible for frequency regulation [15] and thus converter-based renewable generators are generally modelled as inertia-less power sources [16,17]. Only the models of conventional units are presented as follows.…”

Section: Generator Modelsmentioning

confidence: 99%

Real‐time optimisation of short‐term frequency stability controls for a power system with renewables and multi‐infeed HVDCs

Wang

Xie

Xiang

et al. 2018

IET Renewable Power Generation

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Short-term frequency stability (STFS) is becoming a great concern for a regional receiving-end power system such as the East China Power Grid (ECPG) mainly for two reasons: (i) the increasing percentage of power injected from multi-infeed (ultra-) high-voltage DCs (HVDCs) with the skyrocketed capacities; (ii) the replacement of traditional generation by the continuously growing inertia-less renewables. However, the existing emergency control is not adaptive enough to maintain STFS under varying operation conditions. In this study, a real-time optimised control is proposed to solve the issue more efficiently. It combines emergency power boosting (EPB) of HVDC and emergency demand response (EDR) in a coordinated way. The optimal control problem is formulated based on the online-updated models that reflect the current state of the system and the dynamic responses of multiple types of generators. By converting the non-linear constraint into a linear matrix inequality, the allocation of EPB and EDR can be optimised in a real-time and coordinated way. The performance of the proposed control and its advantages over the existing one are verified by simulation studies on the model of ECPG with low, normal and high penetrations of renewables.

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Section: Generator Modelsmentioning

confidence: 99%

Real‐time optimisation of short‐term frequency stability controls for a power system with renewables and multi‐infeed HVDCs

Wang

Xie

Xiang

et al. 2018

IET Renewable Power Generation

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“…This indicates that the length of the transmission line from the connection point of the wind farm to the network did not affect the network stability. Reference [9] specified that SGs wind turbines are more effective in damping frequency oscillations compared to SCIG wind turbines. However, the study states that DFIG wind turbines do not respond to frequency deviations as their rotor mechanical speed is decoupled from grid frequency.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Integrating Solar and Wind Plants Into the Power Network of Bhutan

Subba,

Lhendup,

Chhetri

2022

JAETM

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Hydropower has been the primary source of electricity in Bhutan, and to achieve power security and sustainability, alternative renewable energy sources (RES) such as solar and wind are being explored. However, the literature reviews present that bus voltage is the most affected parameter during integration. Therefore, this paper presents the impact on the bus voltage due integration of RES into the power network of Bhutan. The measured weather and power grid parameters were used as inputs to the solar and wind farm models developed in MATLAB/Simulink. The output from Simulink was then used as input to the solar and wind model in DIgSILENT Power Factory. The existing Bhutan power grid from 33kV and above has been developed in DIgSILENT to study power flow and results were validated against relevant standards. The voltage profile at the individual bus was maintained at 0.95 to 1.05 p.u. The varying hourly load for 24 hours at the different substations was considered. A quasi-dynamic simulation was performed to study the impact on voltage stability of buses at different penetration levels with every 5% increment. It was observed that at a 25% penetration level, the voltage falls below the accepted limit of 0.95 p.u. The Levelised Cost of Energy for the wind was calculated to be Nu. 13.37/ kWh and Nu. 6.02/ kWh and Nu. 6.51/ kWh from Shingkhar and Yongtru solar, respectively.

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Parameter Tuning Method of Virtual Inertia Controller of Wind Turbines Considering Wind Power Fluctuation

Wang

Jin

et al. 2020

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE)

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Impact of large scale wind penetration on power system frequency stability

Cited by 4 publications

References 9 publications

Real‐time optimisation of short‐term frequency stability controls for a power system with renewables and multi‐infeed HVDCs

Real‐time optimisation of short‐term frequency stability controls for a power system with renewables and multi‐infeed HVDCs

Impacts of Integrating Solar and Wind Plants Into the Power Network of Bhutan

Parameter Tuning Method of Virtual Inertia Controller of Wind Turbines Considering Wind Power Fluctuation

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