The effect of load model on the analyses of load flow, transient stability, small disturbance stability and voltage stability is analyzed. The importance of the load modeling research is emphasized. The development of...
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The effect of load model on the analyses of load flow, transient stability, small disturbance stability and voltage stability is analyzed. The importance of the load modeling research is emphasized. The development of component-based method and measurement-based method is reviewed. The advances on the load model research including the select ion of load model structure, model parameters identification, load model with the voltage stability analysis and the sensitivity of load model to the transient stability is summarized.
With the development of high temperature superconducting wire and related cryogenic technology,applications of superconducting device in power system has become the new hot spot of power engineering science research. ...
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With the development of high temperature superconducting wire and related cryogenic technology,applications of superconducting device in power system has become the new hot spot of power engineering science research. As a perfect union of two revolutionary technologies,superconducting technology and FACTS,Superconducting Magnetic Energy Storage device(SMES) have superior properties and wide application. This article presents methods to selecting installation site of SMES device in the power system.
Due to the complexity of wind power system, it would make chaotic phenomenon which had existed in power system, a typical nonlinear system,receive more attentions With its own characteristics, causes and hazards of ch...
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Due to the complexity of wind power system, it would make chaotic phenomenon which had existed in power system, a typical nonlinear system,receive more attentions With its own characteristics, causes and hazards of chaos, it is determined to be valuable in research At present, the wind power system chaotic phenomenon has become another popular direction in the study of wind power system Its significance and prospect can be very large
The problem of more and more serious reactive power and harmonic pollution to power systems is getting more and more serious, which has caused great concern One of the key points for proper implementation of an APF is...
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The problem of more and more serious reactive power and harmonic pollution to power systems is getting more and more serious, which has caused great concern One of the key points for proper implementation of an APF is to use a reliable method for current/ voltage reference generation Consequently, how to detect harmonic quickly and accurately becomes a crucial problem From the perspective of historical development of detection methods, it experienced a course from frequency domain and time domain and neural network to Adaptive parameter identification Several methods of measuring harmonic, such as wavelet/ S transform, Fourier transform are introduced and compared in this paper
The design of innovative control technology integrated experiment system for engineering applications,which completed integrated experiment system design based on modern automation control technology. It contents regu...
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The design of innovative control technology integrated experiment system for engineering applications,which completed integrated experiment system design based on modern automation control technology. It contents regular control,intelligent electrical appliances,programmable logic controller(PLC),inverter,industrial control computer automation technology card. This system represents modern control technology in electrical engineering application,and it can complete overview of the teaching experiment such as motor control,electric control technology,programmable control technology,man-machine interface configuration technology,PLC control technology based on personal computer soft logic,computer control technology and industrial controlsystem design,and this work can expand for modern automation technology,a open and development of scientific research platform.
As the additional injection type hybrid active power filter(IHAPF) may exist fundamental circulation between the active part and fundamental harmonic branch, a new topology of injection type hybrid active power filter...
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As the additional injection type hybrid active power filter(IHAPF) may exist fundamental circulation between the active part and fundamental harmonic branch, a new topology of injection type hybrid active power filter is proposed to enhance the safety of IHAPF in the paper, this paper discusses the principle of fundamental circulation and the advantage of the novel structure on harmonic voltage of series resonant subcircuit.
Existing model of solar cells is not suitable for partial shading condition, which makes output current-voltage(I-V) curve of photovoltaic(PV) array staid-stepping. Furthermore, Power-Voltage(P-V) characteristics may ...
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Existing model of solar cells is not suitable for partial shading condition, which makes output current-voltage(I-V) curve of photovoltaic(PV) array staid-stepping. Furthermore, Power-Voltage(P-V) characteristics may exist more than two local peak value in partially shading which bring interferences to maximum power point tracking(MPPT). Based on modified engineering model of solar cells, an accurate model of array was proposed considering variation of shadows. And the I-V characteristic, P-V characteristic and yield of PV modules were analyzed. At last, the optimum output power with different shadows arrangement was discussed.
Distribution network is the design of closed loop, open loop operation,which segment equipped with a normally closed and normally open switch contact switch,By changing these disconnect switches and contact switch sta...
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Distribution network is the design of closed loop, open loop operation,which segment equipped with a normally closed and normally open switch contact switch,By changing these disconnect switches and contact switch status, the structure of the distribution network reconfiguration, you can achieve a balanced load, reducing network losses and improve voltage quality *** Network Reconfiguration in mathematics is a multi-objective high-dimensional nonlinear optimization problem, has a great solution space, using the general optimization method is difficult to obtain a good *** optimization methods such as optimal flow pattern method, branch exchange method, particle swarm optimization, genetic algorithms, computational efficiency and optimization results in other aspects worthy of improvement.
This paper describes the connotation and characteristics of the smart grid, detailed key technologies and features of the smart grid Finally, discusses the opportunities and challenges facing in China in the developme...
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This paper describes the connotation and characteristics of the smart grid, detailed key technologies and features of the smart grid Finally, discusses the opportunities and challenges facing in China in the development of smart grid
Modern power grid is an important part of national energy strategy Smart grid is one of the directions to modernize the electricity grid Smart grid is the intelligent of power system, It is also known as the grid 20It...
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Modern power grid is an important part of national energy strategy Smart grid is one of the directions to modernize the electricity grid Smart grid is the intelligent of power system, It is also known as the grid 20It is based on integrated, high-speed bidirectional communication network,It use the advanced sensor and measuring technology, use advanced equipment and control method to realize the application of the power grid reliability, safety, economic, efficient, environmental friendly and safety High speed, bidirectional, real-time, and integrated communication system is the foundation and key point when monitoring and control smart grid So How to improve the communication technology is very important
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