Assessing the Performance of ROCOF Relay for Anti-islanding Protection of Distributed Generation under Subcritical Region of Power Imbalance

Alam, M. R.; Begum, Most. Tasneem Ara; Muttaqi, Kashem M.

doi:10.1109/ias.2018.8544467

Cited by 11 publications

(8 citation statements)

References 20 publications

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“…The frequent security accidents in power grids also demand improved power network security and stability [ 1 – 3 ]. Relay protection is an important defense technique for smart grid systems; its device can alarm while clearing the faults so that the maintenance personnel can quickly identify the fault and take corresponding countermeasures [ 4 ]. As the power grid scale and security demand expand, higher requirements are set forth for power relay security protection.…”

Section: Introductionmentioning

confidence: 99%

A security technology of power relay using edge computing

2021

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The purposes are to find the techniques suitable for the safety relay protection of intelligent substations and discuss the applicability of edge computing in relay protection. Regarding relay protection in intelligent substations, edge computing and optimized simulated annealing algorithm (OSAA) are combined innovatively to form an edge computing strategy. On this basis, an edge computing model is proposed based on relay fault traveling waves. Under different computing shunt tasks, OSAA can converge after about 1,100 iterations, and its computing time is relatively short. As the global optimal time delay reaches 0.5295, the corresponding computing time is 456.27s, apparently better than the linear search method. The proposed model can reduce the computing time significantly, playing an active role in the safe shunting of power relays. The simulation also finds that the voltage and current waveforms corresponding to the fault state of Phase A are consistent with the actual situations. To sum up, this model provides a reference for improving and optimizing intelligent substation relay protection.

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Section: Introductionmentioning

confidence: 99%

A security technology of power relay using edge computing

2021

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“…75 The ROCOF is measured throughout a few cycles and is detected when it exceeds the defined threshold value. The threshold value for this IDM is about 0.1 to 1.2 Hz/s 76 and this technique is widely used because the implementation is easy and simple. ROCOF is superior over OUV/OUF in terms of sensitivity and can detect islanding instant more quickly.…”

Section: Passive Idmsmentioning

confidence: 99%

A comprehensive review on intelligent islanding detection techniques for renewable energy integrated power system

Panigrahi

Bhuyan

Shukla

et al. 2021

Intl J of Energy Research

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Summary Renewable sources of energy are used extensively in the distribution grid to meet the need for growing electricity demand and to resolve the global heating crisis caused by traditional energy sources. They offer many advantages like better efficiency, power quality, and lower air pollution. One of the vital issues with these integrations is islanding condition arising due to the sudden disconnection of grid because of some abnormal situations; however, the distributed generation (DG) retains the power supply to the local loads. Thus, efficient detection of islanding and quick detachment of DG are vital to prevent failure of equipments, grid safety disruption, and risks to personnel safety. In this context, this article represents a comprehensive review of islanding issues and different islanding detection methods (IDMs) that provide a detailed assessment for filling the research gap and thereby highlights the various issues related to island detection. A broad classification of IDMs is established based on the conventional and modern techniques such as local (Active, Passive & Hybrid) and remote IDMs with their detailed illustrations including both intelligent and signal processing‐based IDMs. Comparison of various IDMs based on their merits, demerits, and various performance analysis including the non‐detection zone, detection time, quality factor, power quality, effect on a microgrid, implementation cost, and applicability in multi‐DG system is provided. Hence, this review will provide an insight for the new researchers interested in the area highlighting the different islanding detection techniques with their relative merits and demerits.

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“…College students are high-level specialized talents who have mastered more scientific and cultural knowledge. Improving the employability of college students, making them fully employed, and ensuring their career development is the key to sustainable social and economic development [3]. Faced with the continuous increase in the number of graduates and the shortage of jobs, the pressure of competition among college students is increasing, and employers are increasingly paying attention to the employability of college graduates [4].…”

Section: Introductionmentioning

confidence: 99%

Evaluation Model of Employment and Entrepreneurship of University Students Based on Classification Algorithm

2022

Mathematical Problems in Engineering

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As a new data analysis tool, data mining has developed rapidly. Various types of data sets can be used as data mining objects. Faced with more and more data sources and larger amounts of data today, data mining can effectively obtain valuable information from them and can enable people to better predict possible data information in the future, thereby improving work efficiency. Pheromone update uses a combination of global update and local update. The improved algorithm can balance the relationship between ants’ exploration and development in the process of searching rules. The government’s macroentrepreneurial policy has an important impact on college students’ entrepreneurship. Whether the entrepreneurship can obtain government financial support, whether the entrepreneurial process is simple and easy to do, etc., all affect the enthusiasm of college students to start a business and the success of the business. As an important place for college students to live and study, colleges and universities play a vital role in the growth and future development of college students. Major colleges and universities should improve entrepreneurship education, provide materials and manpower such as teaching materials and teachers, and improve the entrepreneurial quality of college students. In addition, colleges and universities should actively establish and improve the entrepreneurial practice platform for college students to help students gain entrepreneurial experience from practice. As the backbone of the social economy, enterprises should play an appropriate role in college students’ entrepreneurship. On the one hand, they should actively provide entrepreneurial funds, and they should be willing to give college students experience guidance. Only with the joint efforts of the government, universities, and enterprises, can it be possible to establish a practical and effective support system for undergraduate entrepreneurship, promote undergraduate entrepreneurship, and increase the success rate of undergraduate entrepreneurship.

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Assessing the Performance of ROCOF Relay for Anti-islanding Protection of Distributed Generation under Subcritical Region of Power Imbalance

Cited by 11 publications

References 20 publications

A security technology of power relay using edge computing

A security technology of power relay using edge computing

A comprehensive review on intelligent islanding detection techniques for renewable energy integrated power system

Evaluation Model of Employment and Entrepreneurship of University Students Based on Classification Algorithm

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