Comparative study of HVAC and HVDC transmission systems

Kalair, Ali Raza; Abas, Naeem; Khan, Nasrullah

doi:10.1016/j.rser.2015.12.288

Cited by 179 publications

(93 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cost of an HVDC link is also lower than an HVAC link. Based on current technologies, the cost of HVDC is lower when the distance is longer than 600 km [74], such as the Viking Link. The HVDC system tends to become more cost-effective with higher voltage and capacities [75].…”

Section: Enhancing Flexibility From Interconnectorsmentioning

confidence: 99%

A review of Danish integrated multi-energy system flexibility options for high wind power penetration

et al. 2017

View full text Add to dashboard Cite

The current status of wind power and the energy infrastructure in Denmark is reviewed in this paper. The reasons for why Denmark is a world leader in wind power are outlined. The Danish government is aiming to achieve 100% renewable energy generation by 2050. A major challenge is balancing load and generation. In addition, the current and future solutions of enhancing wind power penetration through optimal use of cross-energy sector flexibility, so-called indirect electric energy storage options, are investigated. A conclusion is drawn with a summary of experiences and lessons learned in Denmark related to wind power development.Key words: energy system flexibility; high wind power penetration; integrated multi-energy system; Danish wind energy 1 Current status of Danish wind power and energy system Denmark is an international leader in the implementation of a renewable, secure and cost-efficient energy system using a high share of wind power. In 2016, Denmark achieved a wind power penetration of 38%; while supplying 99.996% of domestic electrical power throughout the year, resulting in one of the highest energy security levels in Europe [1]. The Danish economy since the 1980s has grown by around 80% while maintaining constant energy consumption and, at the same time, decreasing CO 2 emission by 34% [2]. Danish knowledge and development of green energy has also attracted foreign economic investment in renewable energy. In 2017, Apple announced the establishment of one of the largest international data centers in Western Denmark. The Apple data center will be powered by renewable energy and its surplus heating will be injected into the local district heating system [3].

show abstract

Section: Enhancing Flexibility From Interconnectorsmentioning

confidence: 99%

A review of Danish integrated multi-energy system flexibility options for high wind power penetration

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In order to do this, five additional nodes were added to the system: France, Austria, Switzerland, Slovenia, and Greece. These are all connected to the NORD zone, except Greece, which is linked through a HVDC line to the SUD node [35,36]. The installed capacity in all regions considered was evaluated, together with their properties.…”

Section: Imports and Exportsmentioning

confidence: 99%

Improvement of Wind Energy Production through HVDC Systems

et al. 2017

View full text Add to dashboard Cite

Variable and non-programmable resources, such as solar and wind, have undergone a stunning growth in recent years and are likely to gain even more importance in the future. Their strong presence in the national electricity mix has created issues in many countries regarding the secure operation of the power system. In order to guarantee the stability of the system, several TSOs have resorted to wind energy curtailment, which represents a waste of clean energy and an economic loss. In order to analyze this issue, a model of the Italian power system was developed, a program able to simulate the electricity dispatching mechanism. The model was, then, used to evaluate possible solutions to reduce wind curtailment. In particular, a proposal for the construction of an HVDC line linking Southern and Northern Italy was studied.

show abstract

“…Therefore, the surplus electricity must always be generated to meet varying demand. Power system stability and power quality of both AC and in high‐voltage DC (HVDC) transmission systems may get affected in unbalanced situations between demand and supply . Moreover, seasonal and daily fluctuations of RESs further entangle the situation.…”

Section: Introductionmentioning

confidence: 99%

“…Power system stability and power quality of both AC and in high-voltage DC (HVDC) transmission systems may get affected in unbalanced situations between demand and supply. [11][12][13] Moreover, seasonal and daily fluctuations of RESs further entangle the situation. In order to encounter these difficulties, the use of long-or short-term energy storage is considered as one of the prominent solutions.…”

Section: Introductionmentioning

confidence: 99%

Limitations, challenges, and solution approaches in grid‐connected renewable energy systems

et al. 2020

View full text Add to dashboard Cite

Summary In the modern world, only conventional energy resources cannot fulfil the growing energy demand. Electricity is a fundamental building block of a technological revolution. Today, most of the electricity demand is met by the burning of fossil fuels but at the cost of adverse environmental impact. In order to bridge the gap between electricity demand and supply, nonconventional and eco‐friendly means of energy generation are considered. Renewable energy systems (RESs) offer an adequate solution to mitigate the challenges originated due to greenhouse gasses (GHG). However, they have an unpredictable power generation with specific site requirements. Grid integration of RESs may lead to new challenges related to power quality, reliability, power system stability, harmonics, subsynchronous oscillations (SSOs), power quality, and reactive power compensation. The integration with energy storage systems (ESSs) can reduce these complexities that arise due to the intermittent nature of RESs. In this paper, a comprehensive review of renewable energy sources has been presented. Application of ESSs in RESs and their development phase has been discussed. Role of ESSs in increasing lifetime, efficiency, and energy density of power system having RESs has been reviewed. Moreover, different techniques to solve the critical issues like low efficiency, harmonics, and inertia reduction in photovoltaic (PV) systems have been presented. Unlike most of the available review papers, this article also investigates the impact of FACTS technology in RESs‐based power system using multitype flexible AC transmission system (FACTS) controllers. Three simulation models have been developed in MATLAB/Simulink. The results show that FACTS devices help to maintain the stability of RESs integrated power system. This review paper is believed to be of potential benefit for researchers from both the industry and academia to develop better understanding of challenges and solution techniques for REs‐based power systems and future research dimensions in this area.

show abstract

Comparative study of HVAC and HVDC transmission systems

Cited by 179 publications

References 77 publications

A review of Danish integrated multi-energy system flexibility options for high wind power penetration

A review of Danish integrated multi-energy system flexibility options for high wind power penetration

Improvement of Wind Energy Production through HVDC Systems

Limitations, challenges, and solution approaches in grid‐connected renewable energy systems

Contact Info

Product

Resources

About