Evaluation of the Impact of High Penetration Levels of PV Power Plants on the Capacity, Frequency and Voltage Stability of Egypt’s Unified Grid

Sultan, Hamdy M.; Diab, Ahmed A. Zaki; Kuznetsov, Oleg N.; Ali, Ziad M.; Abdalla, Omer

doi:10.3390/en12030552

Cited by 46 publications

(26 citation statements)

References 30 publications

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“…In a distribution grid connected WPP, the overall system impedance angle (X/R) ratio seen at the PCC (X/R PCC ) and the Short Circuit Capacity (SCC) are important parameters that affect V PCC stability [7,8]. Short Circuit Ratio (SCR), defined as the grid's SCC divided by the power generated by WPP (P wind ) [9], is another determining factor.…”

Section: Introductionmentioning

confidence: 99%

Developing a Mathematical Model for Wind Power Plant Siting and Sizing in Distribution Networks

et al. 2020

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Wind Power Plants (WPPs) are generally located in remote areas with weak distribution connections. Hence, the value of Short Circuit Capacity (SCC), WPP size and the short circuit impedance angle ratio (X/R) are all very critical in the voltage stability of a distribution system connected WPP. This paper presents a new voltage stability model based on the mathematical relations between voltage, the level of wind power penetration, SCC and X/R at a given Point of Common Coupling (PCC) of a distribution network connected WPP. The proposed model introduces six equations based on the SCC and X/R values seen from a particular PCC point. The equations were developed for two common types of Wind Turbine Generators (WTGs), including: the Induction Generator (IG) and the Double Fed Induction Generator (DFIG). Taking advantage of the proposed equations, design engineers can predict how the steady-state PCC voltage will behave in response to different penetrations of IG- and DFIG-based WPPs. In addition, the proposed equations enable computing the maximum size of the WPP, ensuring grid code requirements at the given PCC without the need to carry out complex and time-consuming computational tasks or modelling of the system, which is a significant advantage over existing WPP sizing approaches.

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Section: Introductionmentioning

confidence: 99%

Developing a Mathematical Model for Wind Power Plant Siting and Sizing in Distribution Networks

et al. 2020

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“…The P-V curve is applied to determine the maximum real power loading margin which also known as static voltage stability margin. The power system load is gradually increased and stopped when the voltage collapse point or nose of the PV curve is reached [24].…”

Section: Static Voltage Stabilitymentioning

confidence: 99%

Impact of Large-Scale Wind Power Penetration on Dynamic Voltage Stability of Interconnected Power System: An Indonesia Case Study

Krismanto¹,

Sulistiawati²,

Limpraptono³

et al. 2021

IJIES

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The increasing penetration of wind power plant introduces a various effect on power system stability, operation and control. Unpredictable, uncertain and fluctuating circumstances can significantly affect the performance of power system. Moreover, employment of novel technologies in wind power plant significantly alter the control characteristic and operation procedure of power system to deal with load variations and fast changing of generated power from wind-based power plant. One of the main focus in integrating large scale wind power plant is how to maintain voltage stability under transient and steady state scenarios. In this paper, effects of large-scale wind power plants on voltage stability of power system is investigated. Practical test system of South-West Sulawesi, Indonesia with integration of two large scale wind power plants are considered. Hence the novelty of this paper is to introduce new and practical test system for power system stability study considering renewable energy integration. The simulation results suggest that the additional power injection from wind power plant introduces beneficial effects on power system voltage stability performance. It was monitored that the increasing power injection from wind power plant enhanced the voltage profile (0.96 pu to 0.975 pu), voltage margin and load-ability (200 MW to 215 MW) of the system. Furthermore, it was also observed that additional power injection from wind power plant significantly improved the dynamic voltage stability performance of the power system, ensuring stable operation under transition stages when the power system was subjected to disturbances.

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“…Although Egypt is rich in various renewable energy sources, these sources have not been optimally exploited yet [29]. Most of the generated electricity in Egypt is thermally produced from either gas, steam or combined cycle.…”

Section: Examination Of the Studied Real Case Study In Egyptmentioning

confidence: 99%

“…The average yearly solar radiation over New Valley ranges between 2800 and 3200 kWh/m 2 according to the average values during the last 20 years. The daily duration of sunshine fluctuates between 9 and 11 h [29]. This climate gives New Valley the priority for investment in renewable energy projects.…”

Section: Examination Of the Studied Real Case Study In Egyptmentioning

confidence: 99%

Active Distribution Network Modeling for Enhancing Sustainable Power System Performance; a Case Study in Egypt

et al. 2020

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The remarkable growth of distributed generation (DG) penetration inside electrical power systems turns the familiar passive ‎distribution networks (PDNs) into active distribution networks (ADNs). Based ‎on the backward/forward sweep method (BFS), a new power-flow algorithm was developed in this paper. The algorithm is flexible to handle the bidirectional flow of power that characterizes the ‎modern ADNs. Models of the commonly used distribution network components were integrated with the developed algorithm to ‎form a comprehensive tool. This tool is valid for modeling either balanced or unbalanced ADNs with an unlimited number of nodes or laterals. The ‎integrated models involve modeling of distribution lines, losses inside distribution transformers, automatic voltage regulators ‎‎(AVRs), DG units, shunt capacitor banks (SCBs) and different load models. To verify its validity, the presented algorithm was first applied to the unbalanced IEEE 37-node standard feeder in both passive and active states. Moreover, the algorithm was then ‎applied to a balanced 22 kV real distribution network as a case study. The selected network is located in a remote area in the western desert of Upper Egypt, far away from the Egyptian unified national grid. Accordingly, the paper examines the current and future situation of the Egyptian electricity market. Comparison studies between the ‎performance of the proposed ADNs and the classical PDNs are discussed. Simulation results are presented to demonstrate the ‎effectiveness of the proposed ADNs in preserving the network assets, improving the system performance and minimizing the ‎power losses‎.

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Evaluation of the Impact of High Penetration Levels of PV Power Plants on the Capacity, Frequency and Voltage Stability of Egypt’s Unified Grid

Cited by 46 publications

References 30 publications

Developing a Mathematical Model for Wind Power Plant Siting and Sizing in Distribution Networks

Developing a Mathematical Model for Wind Power Plant Siting and Sizing in Distribution Networks

Impact of Large-Scale Wind Power Penetration on Dynamic Voltage Stability of Interconnected Power System: An Indonesia Case Study

Active Distribution Network Modeling for Enhancing Sustainable Power System Performance; a Case Study in Egypt

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