The method, complex torque coefficient approach, which is used to analyze the sub synchronous oscillation (SSO) problems with the help of PSCAD/EMTDC are recommended. While how to achieve the complex torque coefficien...
详细信息
Simulation accuracy has great effects on powersystem analysis and control. In this paper, in order to analyze the powersystem real-time digital simulation error, prony algorithm is used to extract the features of si...
详细信息
A new method, which integrates the virtue of the probability and mathematical statistics with that of the fuzzy mathematics for power quality assessment, is proposed in this paper. The index showing an aspect of power...
详细信息
On the base of generalizing previously research findings, the authors of the paper apply theory of instant reactive power and theory of unbalanced compensation in the controlling of static reactive-power compensation ...
详细信息
The pulse width modulation technique and dynamic operating mode characteristics of direct drive permanent magnet synchronous generator (PMSG) are researched firstly. A novel sliding mode variable structure directed po...
详细信息
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...
详细信息
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.
In the powersystem, the controllable reactor can be used as reactive power compensation device to limit over-voltage operation, reduce no-load or light load loss and improve transmission capacity. It is with characte...
详细信息
ISBN:
(纸本)9781424441662
In the powersystem, the controllable reactor can be used as reactive power compensation device to limit over-voltage operation, reduce no-load or light load loss and improve transmission capacity. It is with characters of simple structure, easy maintaining, low cost and high stability, etc. The magnetic field is closely related to the reactor performance. In this paper, aiming at a controllable saturated reactor prototype, using the finite elements method, the magnetic field is studied. Then, the precise 2-D prototype field-circuit coupling model is established based on the magnetic field analysis and the finite element analysis software - ANSYS. Using this model, the magnetic field and working currents concrete values under the condition that AC and DC excitations co-exist within the core are calculated. The analysis results indicate that finite element analysis theory can effectively analyze the magnetic field of the reactor.
Frequency stability refers to the ability of a powersystem to maintain steady frequency following a severe system upset resulting in a significant imbalance between generation and load. The rate of frequency change (...
详细信息
As a promising renewable resource, wind power is highly expected to contribute a significant part of generation in powersystems in the future, but this also brings new integration related power quality issues due to ...
详细信息
The turbo-generator units in the vicinity of HVDC transmission system are vulnerable to Sub-Synchronous Torsional Interactions (SSTI). Based on the AC-DC system decoupling transfer function structure of Generator rota...
详细信息
ISBN:
(纸本)9781849197007
The turbo-generator units in the vicinity of HVDC transmission system are vulnerable to Sub-Synchronous Torsional Interactions (SSTI). Based on the AC-DC system decoupling transfer function structure of Generator rotation rate to the electric torque, a novel phase correction method of HVDC supplementary subsynchronous multiple models damping controller is proposed, and a SSDC software for adjusting and analyzing the parameters with matlab is designed. The simulation, including Hulunbier-Liaoning HVDC system in the northeast power grid in China which can arouse the SSTI, proves the feasibility and effectiveness of the method.
暂无评论