In the unilateral open electricity market in China, the balance account is created as "regulator" between the bidding price of generation and retail price of electricity. Currently, the management of the bal...
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ISBN:
(纸本)9781424449347
In the unilateral open electricity market in China, the balance account is created as "regulator" between the bidding price of generation and retail price of electricity. Currently, the management of the balance account has serious defects. This might lead to the huge deficit and endanger the operation of market. Based on the incentive compatible principle, we propose a new method to manage the balance account through reward-penalty in the paper. The optimal bidding strategy for the power suppliers considering the new management method is also provided. The test results indicate that the proposed bidding strategy can mitigate the market power of the generation, reduce the market clearing price significantly, keep the fund of the balance account fluctuating within a certain range and further ensure the stability and sustainability of power market operation.
An asynchronous parallel method based on equivalence is proposed for transient stability simulation of powersystem. In the method, the system is partitioned into several interconnected subsystems by geographical loca...
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ISBN:
(纸本)9781424449347
An asynchronous parallel method based on equivalence is proposed for transient stability simulation of powersystem. In the method, the system is partitioned into several interconnected subsystems by geographical location, and the subsystems are equivalent each other at each integration step. Each subsystem utilizes equivalent information from other subsystems to calculate independently. At each integration step, a subsystem only needs the predictive equivalence and correctional equivalence once. Additionally, asynchronous parallel technology based on the MPI on the PC-Cluster platform is designed to speed up the convergence. Several cases demonstrate that the proposed method has fast calculation speed and efficiency, as well as the simulation precision accepted for engineering application. For some large scale real system, the real-time or even super-real-time simulation will be realized.
With the proliferation of nonlinear loads as power electronics equipment, the disadvantage of harmonic is more and more, which influence quality of power grid. Active power filter (APF) is a new harmonic restraint met...
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A new IGBT (Insulated Gate Bipolar Transistor) model for simulation of eomplicated multi-IGBT cireuits is presented. Based on the gate chargc and discharge behaviors of IGBT, it piecewise models the turn-on and -off t...
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A fuzzy neural network (FNN) based inter-turn short circuit fault detection scheme for generator is proposed. The second harmonic magnitude of field current and the negative sequence components of voltages and current...
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Nowadays, technologies of distributed generation (DG) and distributed energy resource (DER) are developing rapidly. It has been demonstrated to be more reliable and economical that DGs or DERs are integrated into the ...
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ISBN:
(纸本)9781424449347
Nowadays, technologies of distributed generation (DG) and distributed energy resource (DER) are developing rapidly. It has been demonstrated to be more reliable and economical that DGs or DERs are integrated into the traditional power grid based on micro-grid. So, more and more micro-grids will occur in distribution system in the future. In this paper, we mainly concern and discuss the impact of micro-grids on the distribution network reconfiguration. A model suitable for reconfiguration of distribution system with micro-grids is presented in this paper. Once a fault occurs in a distribution system, it can be applied to construct some islands so as to guarantee the power supply for some important customers and to reduce the systempower loss at the same time. The problem is decomposed into a capacity subproblem and a reconfiguration sub-problem. The former is used to determine the optimal capacity for each island, and the latter is used to find the optimal reconfiguration with less power loss. They are called iteratively to get the optimal solution. Finally, some typical systems are employed to validate the effectiveness of the presented method.
Polymer insulating materials installed in electrical and electronic devices are widely used in spacecraft and nuclear power stations where the polymers are exposed to energetic radioactive rays. The chemical structure...
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Based on,but not limited to the research results of electrical engineering published in the special issue of Science in China Series E,June 2008,this essay gives a brief review on a wide range of state-of-art advancem...
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Based on,but not limited to the research results of electrical engineering published in the special issue of Science in China Series E,June 2008,this essay gives a brief review on a wide range of state-of-art advancement in electrical engineering field of China,which includes powersystem modeling,analysis and control,risk assessments in powersystem,etc.
The adaptive immune algorithm (AIA) developed from immune algorithm (IA), owns faster computation speed and better convergence than that of GA and other stochastic type algorithms, due to its characteristic of having ...
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By analyzing the basic principle of voltage space vector PWM (SVPWM) and the AC electronic load which consists of voltage source PWM rectifier, a novel current control method is proposed. The control strategy combinin...
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