An operating reserve risk map for quantifiable reliability performances in renewable power systems

Modarresi, Mohammad Sadegh; Xie, Le

doi:10.1109/pesgm.2014.6939933

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…However, operating reserves may lead to a significant increase in solar grid connection costs. Modarresi et al [26] introduced a new method of quantifying operation reserves in power systems with high intermittent resource utilization rate, and introduced an intuitive and rigorous risk diagram, which will help to obtain more cost-effective operation reserves while ensuring system reliability, load probability loss, and other performance indexes.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Dispatching Electricity Market with Consideration of a Solar-Assisted Coal-Fired Power Generation System

Zhai

Feng

et al. 2019

Energies

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This study investigates the multi-objective optimization of load dispatch of a solar-assisted coal-fired power generation system. The improved environmental/economic load dispatch model considers coal consumption, NO x emissions, and power purchase cost. The singular weighted method is utilized to solve this multi-objective and multi-constraint optimization problem. A power system that includes five power generators, one of which is retrofitted to a solar-assisted coal-fired unit, is also analyzed. It can be concluded that the loads of solar-assisted coal-fired units are higher than the original coal-fired unit, and with the increase of solar radiation, the gap between the loads of two units also increases. In addition, after retrofitting, the coal consumption, the NO x emission, and power costs of units reduce by about 2.05%, 0.45%, and 0.14%, respectively. From the study on the on-grid power tariff, where the tariff drops from 16.29 cents/kWh to 3.26 cents/kWh, NO x emissions drop from 12.31 t to 11.28 t per day, a reduction of about 8.38%. The cost of purchasing electricity decreases from $ 2,982,161.8 to $ 2,020,505.0 per day, a decrease of 32.25%. Therefore, when both coal-fired units and solar-assisted coal-fired units exist in a region, the use of solar-assisted coal-fired power generation units should be prioritized.Energies 2019, 12, 1284 2 of 16 157(2) When the temperature of the feed water out of the oil-water heat exchanger is lower than 158 that of the original second heater but higher than that of the original third heater. The feed water 159 enters the second heater. This mode is shown in (b) position. 160(3) When the temperature of feed water out of the oil-water heat exchanger is lower than that of 161 the original first heater but higher than that of the original second heater. The feed water enters the 162 first heater. This mode is shown in (c) position. 163(4) When the temperature of feed water out of the oil-water heat exchanger is higher than that 164 of the original first heater. The feed water enters the boiler. This mode is shown in (d) position.165 3. Methodology 166Under certain constraints, multi-objective optimization aims to have more than one goal to 167 achieve an optimal solution. One of the easiest ways to obtain the optimal solution is called standard 168 quantization or the singular weighted method. A weight is assigned to each target. All the targets 169 with their own weights are positioned together, and then the problem is solved under the same 170 constraints of the original problem. The obtained solution is a solution to the original problem (called 171 the Pareto solution). The weight arrangement is constantly changed; hence, different optimal

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Section: Introductionmentioning

confidence: 99%

Optimization of Dispatching Electricity Market with Consideration of a Solar-Assisted Coal-Fired Power Generation System

Zhai

Feng

et al. 2019

Energies

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“…The penetration of distributed renewable energy generation has been prompted by several factors, such as environmental issues, market deregulation, incentive policies and growth in the global demand for electricity. The benefits of distributed renewable energy generation can include reliability enhancement, power loss reduction, improvement in power quality, the integration of renewable sources and the provision of ancillary services [1]. However, if not addressed properly, increasing penetration of distributed energy resources in the power system, can also have negative effects on power system voltage control and accumulative communication and control delays of different parts, can lead to frequency instability [2].…”

Section: Introductionmentioning

confidence: 99%

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2018

International Advanced Research Journal in Science, Engineering

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For the past few years, interest in wave energy is growing very fast. The ocean holds massive amount of clean and untouched energy, which can show an important role in supplying our energy demand. It is approximated that total energy from the coast of the United States is 252 million MWh/year. Oceans and sees around the world contain plentiful amount of energy that exceeds today's power generation needs. Wave Energy Converters (WEC) are devices to convert wave energy into electrical energy. One example of WEC technology is Oscillating Water Columns (OWCs). OWCs are devices with a semi-submerged chamber or hollow open to the sea below, keeping a trapped air pocket above a water column. Waves force the column to act like a piston, moving up and down, forcing the air out of the chamber and back into it. This continuous movement force a bidirectional stream of high-velocity air, which is channelled through a Power-TakeOff (PTO). The PTO system converts the airflow into energy. This paper discusses different types of wave energy converters and challenges regarding their integration to power grid.

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“…Applications of regulating reserves and contingency reserve are well known in the state of art and can be found in [8,9]. Applications of renewable reserves, in the short-term, can be found in [7,10]. The present study relies on the planning phase of the long-term operating reserve assessment, which aims to address short-term operational reserve aspects in assessing the adequacy of power systems.Concerning these perspectives, the increased usage of intermittent renewable generation and HVDC links applications has constructed the current power system, where part of these systems may be viewed as synchronous and others parts as asynchronous.…”

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confidence: 99%

Long-term Static and Operational Reserves Assessment Considering Operating and Market Agreements Representation to Multi-Area Systems

et al. 2020

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This paper exploits different computational modelling to assess long-term static and operating reserves to multi-area systems. To deal with intermittent renewable generation and other types of technologies, this paper is proposing a flexible simulation model able to capture not only technological innovation of power system components and their electric and energetic behaviors, but also operational procedures and market agreements representations to yield planning insights about the performance of the multi-area systems. Results based on two modified test systems with a variate of generation technologies and interconnections are used to show the potential of the simulation model.

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An operating reserve risk map for quantifiable reliability performances in renewable power systems

Cited by 6 publications

References 10 publications

Optimization of Dispatching Electricity Market with Consideration of a Solar-Assisted Coal-Fired Power Generation System

Optimization of Dispatching Electricity Market with Consideration of a Solar-Assisted Coal-Fired Power Generation System

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Long-term Static and Operational Reserves Assessment Considering Operating and Market Agreements Representation to Multi-Area Systems

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