Research on Optimal Scheduling of Power System with High-penetration Renewable Energy Considering Flexibility of Power Supply Side and Load Side

2019 ◽  
Author(s):  
Su Zhang ◽  
Jianqin Liu ◽  
Zhi An ◽  
Longfei Ma ◽  
Quanhui Che ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Power Supply ◽  
Optimal Scheduling ◽  
Supply Side ◽  
High Penetration

Electricity Price of Hybrid Power System and Decision Making of Renewable Energy Investment Capacity

2018 ◽  
Vol 6 (3) ◽  
pp. 193-213 ◽  
Author(s):  
Jiaping Xie ◽  
Weisi Zhang ◽  
Yu Xia ◽  
Ling Liang ◽  
Lingcheng Kong
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Power Supply ◽  
Electricity Market ◽  
Sensitivity Coefficient ◽  
Electricity Price ◽  
Supply Side ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Installed Capacity

Abstract In the existing electricity market, the traditional power suppliers and renewable energy generators coexist in the power supply side. In the power supply side, renewable energy generators generate power by wind and other natural conditions, leading renewable energy output a certain randomness. However, the low marginal generating cost and the reduction of carbon emissions, and thus brings a certain advantage for renewable energy compared to alternative energy. Electricity, as a special commodity, stable and adequate power supply is a necessary guarantee for economic and social development. Power shortage situation is not allowed in the power system, and the extra power needs to be handled for the purpose of safety. In this paper, the hybrid power generated by renewable energy generators and traditional energy generators is used as power supply, and then the electricity market sells hybrid power to electricity consumers, the hybrid power system determines the optimal daytime price, nighttime price, and the optimal installed capacity of the renewable energy suppliers. We find that the installed capacity of renewable energy increases first and then decreases with the increase of the price sensitivity coefficient of traditional energy supply. Electricity demand is negatively related to electricity price in the current period, and is positively related to price in the other period. The average price of day and night is only related to the total potential demand of day and night and the total generation probability of renewable energy. The price difference between daytime and nighttime is positively related to potential electricity demand, and negatively related to the sensitivity coefficient of electricity price.

scholarly journals Small Signal Stability of Synchronous Motor-Generator Pair for Power System With High Penetration of Renewable Energy

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 166964-166974 ◽  
Author(s):  
Qianyu Wu ◽  
Yongzhang Huang ◽  
Chenyang Li ◽  
Yujun Gu ◽  
Haisen Zhao ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Synchronous Motor ◽  
Small Signal ◽  
Small Signal Stability ◽  
Signal Stability ◽  
High Penetration

Generation Extension Arrangement in Power Engineering Networks Using Chaotic Grasshopper Optimization Algorithm

2020 ◽  
pp. 207-231
Author(s):  
Suriya Ponnambalam ◽  
Subramanian Srikrishna ◽  
Ganesan Sivarajan ◽  
Abirami Manoharan
Keyword(s):  
Power System ◽  
Power Supply ◽  
Planning Horizon ◽  
Energy Sources ◽  
Supply Side ◽  
Demand Side ◽  
Expansion Planning ◽  
Generation Expansion ◽  
Grasshopper Optimization Algorithm ◽  
Grasshopper Optimization

Electric utilities over the domain affected with ecological issues associated with standard fossil fuel-established plants are examining more within the potentiality of interposing energy sources type of plants into the system as an alternative. Integration of Demand Side Management (DSM) and Supply Side Management (SSM) is required in a rational power system planning that implies concurrent deliberation of both qualitative and quantitative problems like costs, fuel mix, and reliability of power supply. This chapter examines the economic and environmental ability of power supplies initiation into an existing peak deficit power system, incorporating both DSM and SSM plans. The Generation Expansion Planning (GEP) study is carried out in the power system for the period of 24 years planning horizon.

scholarly journals Design and Application of a Standalone Hybrid Wind–Solar System for Automatic Observation Systems Used in the Polar Region

2018 ◽  
Vol 8 (12) ◽  
pp. 2376 ◽  
Author(s):  
Guangyu Zuo ◽  
Yinke Dou ◽  
Xiaomin Chang ◽  
Yan Chen
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Solar System ◽  
Low Temperature ◽  
Power System ◽  
Power Supply ◽  
The Arctic ◽  
Polar Regions ◽  
Observation Systems ◽  
Continuous Power

Continuous power supply for unmanned and automatic observation systems without suitable energy-storage capabilities in the polar regions is an urgent problem and challenge. However, few power-supply systems can stably operate over the long term in extreme environments, despite excellent performance under normal environments. In this study, a standalone hybrid wind–solar system is proposed, based on operation analysis of the observing system in the Arctic Ocean, the polar environments, and renewable-energy distribution in the polar regions. Energy-storage technology suitable for cold regions is introduced to support the standalone hybrid wind–solar system. Mathematical models of the power system at low temperature are also proposed. The low-temperature performance and characteristics of lead–acid battery are comprehensively elucidated, and a dedicated charging strategy is developed. A hybrid wind–solar charging circuit is developed using a solar charging circuit, a wind turbine charging circuit, a driver circuit, a detection circuit, an analog-to-digital converter (ADC) circuit, and an auxiliary circuit. The low temperature stability of charging circuit is test from −50 °C to 30 °C. Temperature correction algorithm is designed to improve the efficiency of the power supply system. The power generation energy of the power system was simulated based on the monthly average renewable energy data of Zhongshan Station. A case study was applied to examine the technical feasibility of the power system in Antarctica. The five-month application results indicate that the power system based on renewable energy can maintain stable performance and provide sufficient power for the observing system in low ambient temperatures. Therefore, this power system is an ideal solution to achieve an environmentally friendly and reliable energy supply in the polar regions.

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