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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 82 for “"Load shedding"”.
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A load shedding scheme for inverter based microgrids
… is exacerbated when induction motor (IM) loads are present. Using the MATLAB simulation tool SimPowerSystems, an inverter-based microgrid model connected to the IEEE-13 distribution system was created. A load shedding scheme was developed in order to improve microgrid stability during …
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Adaptive underfrequency load shedding based on real time simulation
Conventional Underfrequency Load Shedding (UFLS) is used to balance generation and load when underfrequency conditions occur. It sheds a fixed, predetermined amount of load irrespective of disturbance location. Several adaptive UFLS schemes are proposed in the literature. Recent research discussed …
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WAMS-based Intelligent Load Shedding Scheme for Preventing Cascading Blackouts
… cause a large mismatch in generation and load in the network, leading to frequency instability. If the mismatch is not rectified quickly, the system may disintegrate into multiple islands. Though the Automatic Generation Controls (AGC) perform well in correcting frequency deviation over a …
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Hardware implementation of an automatic adaptive centralized under frequency load shedding
… shortcomings of the conventional Under Frequency Load Shedding UFLS, most researches develop an adaptive UFLS schemes. With the aid of new technology hardware that enables the implementation of Wide Area Monitoring Protection and Control (WAMPC) application, this gives the opportunity for using …
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A new algorithm for load shedding in an industrial cogeneration power plant
… satisfy industrial cogenerator's requirements in load shedding.
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The economic impact of load shedding : the case of South African retailers
… an understanding of the economic impact of load shedding is a critical consideration for all businesses in South Africa. This is particularly true for the retail sector as the impact of load shedding on consumers is dynamic and complex. The current research examines the impact of unstable …
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Exploring students’ experiences with their studies amidst the current load shedding problem
… electricity shortages, manifested through load shedding, continue to disrupt multiple sectors, including higher education. While much attention has been given to the economic effects of energy instability, less is known about the academic implications for university students. This study …
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Decision support for the production and distribution of electricity under load shedding
… to sufficiently provide supply. In such case load shedding (a controlled, enforced reduction in electricity supply) is necessary to prevent the risk to system collapse. In South Africa at the present time, a systematic lack of supply has meant that regular load shedding has taken place, with …
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Optimal under voltage load shedding based on stability index by using artificial neural network
… system to approach breakdown or power outages. Load shedding is deliberated as the final choice from the numerous techniques which have been achieved to prevent voltage breakdown. Various studies have been led on this part of the issue. Still, there are possibilities for other ways through …
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A fast approximate solution to the electrical power generation rescheduling and load shedding problem
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 1978
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A Dynamic Attribute-Based Load Shedding and Data Recovery Scheme for Data Stream Management Systems
… In this thesis, we present a new approach for shedding the less informative attribute data from a data stream with a fixed schema to maintain a data rate lesser than the network channels capacity. A scheme for shedding attributes, instead of tuples, becomes imperative in stream data where the …
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The effects of load shedding on the viability of small and medium enterprises in Chainda compound.
… has prompted ZESCO to institute a national world load shedding schedules which last up to eight (8) hours daily. This development has a potentially far-reaching economic effect on the operations of the national economy, which also includes the Small and Medium Enterprises (SMEs) This study used a …
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The effects of load shedding on the viability of small and medium enterprises in Chainda compound.
… has prompted ZESCO to institute a national world load shedding schedules which last up to eight (8) hours daily. This development has a potentially far-reaching economic effect on the operations of the national economy, which also includes the Small and Medium Enterprises (SMEs) This study used a …
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Reinforcement learning approach for optimizing load shedding and controller parameter tuning in active islanded power systems
… maintaining the balance between generation and load within an islanded system through under-frequency load shedding (UFLS) during islanding events. The optimal design of UFLS schemes in active networks presents a complex problem, especially with the high penetration of inverter-based resources …
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The perceived psychosocial and economic impact of load-shedding on employees in selected small micro medium enterprises
… Businesses were warned about the frequency of load-shedding; however, it still affected several substantially, as they could not afford alternatives. These businesses were affected owing to the downtrend of South Africa’s economy. Load-shedding caused an adverse environment for several …
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Resource allocation and load-shedding policies based on Markov decision processes for renewable energy generation and storage
… deal with this intermittency. In particular, by shedding some specific amount of load we can avoid a total system breakdown of the entire power plant. The load shedding method discussed in this thesis utilizes a Markov Decision Process with backward policy iteration. This is based on a …
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A comparative study of the AHP and TOPSIS methods for implementing load shedding scheme in a pulp mill system
… generator would cause other generators to be overloaded. In the meantime, the subsequence loads will be shed until the generators are sufficient to provide the power to other loads. Once the fault had been fixed, the load shedding scheme can be deactivated. Thus, load shedding scheme is the best …
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An optimal load shedding scheme based on the analytical heirarchy approach: a case study of the Selangor Electrical System
… even for only one day. If the total electrical load power demand greatly exceeds than the power supplied and no decision-making in removing a certain load, it will affect to the power system. Certain loads will be have to remove and needs some decision-making process in order to choose the best …
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