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Electric power

About: Electric power is a research topic. Over the lifetime, 73036 publications have been published within this topic receiving 636991 citations.


Papers
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Patent
30 Jul 1979
TL;DR: In this paper, the authors proposed to save electric power consumption without impairing operation easiness, by automatically turning on and off power supply in accordance with the frequency of use of copier parts.
Abstract: PURPOSE:To save electric power consumption without impairing operation easiness, by automatically turning on and off power supply in accordance with the frequency of use of copier parts. CONSTITUTION:Time setting of registers 12-15 and time correction of clock register 11 are conducted by giving inputs of numerical keys 1 and function keys 3 through memory circuit 6. Times of registers 12-15 and that of register 11 are compared in comparators 25-28, coincidence signals from circuits 25, 26 are provided to a power circuit as signals A for closing power supply, and coincidence signals from circits 27, 28 are delivered to the power circuit as signals B for opening power supply. Circuits 25-28 are energized in a time division mode at timing t1-t4 obtained by counting 29 second signals from the clock circuit.

102 citations

Journal ArticleDOI
TL;DR: A SEDMS that operates through interaction between a smart energy distribution system and a smart monitoring and control system that monitors information about power consumption, a user¿s situation and surroundings as well as controls appliances using dynamic patterns is proposed.
Abstract: Emerging green IT and smart grid technologies have changed electric power infrastructure more efficiently. These technologies enable a power system operator and a consumer to improve energy efficiency and reduce greenhouse gas emissions by optimizing energy distribution and management. There are many studies of these topics with the trend of green IT and smart grid technology. However, existing systems are still not effectively implemented in home and building because of their architectural limitations. Therefore, in this paper, we propose a smart energy distribution and management system (SEDMS) that operates through interaction between a smart energy distribution system and a smart monitoring and control system. Proposed system monitors information about power consumption, a user?s situation and surroundings as well as controls appliances using dynamic patterns. Because SEDMS is connected with the existing power grid and with the newrenewable energy system, we consider integration of new renewable energy system through electric power control. We implemented proposed system in test-bed and carry out some experiments. The results show that a reduction of the service response time and the power consumption are approximately 45.6% and 9-17% respectively.

102 citations

Journal ArticleDOI
TL;DR: In this article, a small-scale seawater reverse-osmosis system with excellent energy efficiency is presented, which can deliver up to 460 l/h of potable water, from seawater (at 40,000 ppm), while consuming less than 1600 W of electrical power.

102 citations

Journal Article
TL;DR: In this paper, the authors discuss the effect of liberalizing UK retail energy markets on consumers and the investment implications of global energy trends. But, they focus on the UK's role in the future of renewable energy technologies.
Abstract: Introduction PART 1: CONCEPTS 1. The New Energy Paradigm 2. Electricity Networks: The Innovation Supply Chain 3. Carbon Contracts 4. Competitive Electricity Markets and Investment in New Generating Capacity PART 2: OIL AND GAS 5. Oil Markets and the Future 6. OPEC Pricing Power: The Need for a New Perspective 7. UK Oil and Gas Depletion Policy with Growing Import Dependence 8. A Constrained Future for Gas in Europe? PART 3: ELECTRICITY 9. Electricity and Markets 10. Large-scale Deployment of Renewables 11. Policy Uncertainty and Supply Adequacy in Electric Power Markets 12. The Effect of Liberalizing UK Retail Energy Markets on Consumers 13. Nuclear Energy PART 4: INTERNATIONAL POLICY 14. The Investment Implications of Global Energy Trends 15. Climate Change Negotiations: Past and Future 16. European Energy Policy: Securing Supplies and Meeting the Challenge of Climate Change

102 citations

Journal ArticleDOI
TL;DR: In this paper, a multistage generation expansion planning (GEP) including nuclear units, renewable energy units, and different fossil fuel-fired units equipped with carbon capture and storage (CCS) is addressed.
Abstract: Nowadays, CO2 is the primary greenhouse gas pollutant and fossil fuel-fired electrical power plants are the major producer of CO2. In this regard, it is required to equip the electrical power plants with carbon capture and storage (CCS) systems. This paper addresses a multistage generation expansion planning (GEP) including nuclear units, renewable energy units, and different fossil fuel-fired units equipped with CCS. The proposed GEP minimizes the planning costs and CO2 at the same time, while it considers CCS cost and revenue. The problem is mathematically expressed as a constrained, mixed-integer, and nonlinear optimization problem and solved using particle swarm optimization (PSO) algorithm. The problem considers all practical constraints including security constraints of the network, and the generating units constraints of operation. Simulation results demonstrate that utilizing CCS significantly impacts on the planning output. Eventually, a comprehensive sensitivity analysis is carried out based on the CCS cost and revenue.

101 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
2023267
2022678
20211,512
20202,845
20193,476