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2008 Vol.28 (Number 31)
Nov. 5, 2008
电力系统运行与规划
电力系统仿真及分析计算
继电保护、通信及自动化
动力经济
输配电及供电
高电压技术
电力系统运行与规划
1
LIN Wei-fangTANG YongBU Guang-quan
Definition and Application of Short Circuit Ratio for Multi-infeed AC/DC Power Systems
With the development of power grid, multi-infeed HVDC (MIDC) embedded in one AC system has emerged in south China power grid and east China power gird. Because the traditional short circuit ratio (SCR) is not able to reflect the interaction of HVDCs into ...
2008 Vol. 28 (31): 1-8 [
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LIU HuiMIN YongZHANG Yi-weiHOU Kai-yuanWANG Kai-pengCHEN Lei
Credible Region and Its Extension for Approximate Boundaries of Transient Stability Region in Power System
Boundary approximation of attraction region is important to the application of direct methods to power system transient stability analysis. The study of credible region using characteristic invariant manifolds (CIMs) is an efficient approach to estimate t...
2008 Vol. 28 (31): 9-14 [
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15
DU Zheng-chunWANG YiZHANG QiangFANG Wan-liang
Decentralized Control of Power System by Low-order Dynamic Compensators
Decentralized control by low-order dynamic compensators for damping the low-frequency oscillations in power system was proposed in this paper. The compensators located in different places were designed simultaneously to ensure the totally best damping eff...
2008 Vol. 28 (31): 15-21 [
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22
LIU JiaLI DanGAO Li-qunSONG Li-xin
Vector Evaluated Adaptive Particle Swarm Optimization Algorithm for Multi-objective Reactive Power Optimization
An adaptive particle swarm optimization algorithm (APSO) was presented to solve the problem that the conventional PSO algorithm was easy to fall into a locally optimized point. In this algorithm, inertia weight was nonlinearly adjusted by using population...
2008 Vol. 28 (31): 22-28 [
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29
CAI Guang-linZHANG Yong-junCAI Ze-xiangCHEN Rou-yi
Bus Type Switch Model Based on Smooth Nonlinear Complementarity Constraints
A bus type switch model for power flow computation based on smooth nonlinear complementarity constraints (NCC) equations was proposed in this paper. The PV bus voltage becomes uncontrollable when the output at the bus reaches the reactive power limit. By ...
2008 Vol. 28 (31): 29-34 [
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35
LI Zhen-kunCHEN Xing-yingYU KunLIU Hao-mingZHAO Bo
Hybrid Particle Swarm Optimization for Distribution Network Reconfiguration
A hybrid particle swarm optimization (PSO) approach composed of the binary PSO and discrete PSO was proposed here and successfully applied to distribution network reconfiguration problem. In the solving process, the distribution network was simplified thr...
2008 Vol. 28 (31): 35-41 [
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电力系统仿真及分析计算
42
E Zhi-junYING Di-shengCHAN Ka-wingZHANG MingFANG Da-zhong
Application of Dynamic Phasor in Power System Simulation
Dynamic phasor (DP) models of generator and line with distributed parameters were developed using generalized averaging method in this paper. Then interface between generator and electric power network was discussed. The preliminary research on the hybrid...
2008 Vol. 28 (31): 42-47 [
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继电保护、通信及自动化
48
ZENG Xiang-junCHEN NanLI Ze-wenDENG Feng
Network-based Algorithm for Fault Location With Traveling Wave
In order to solve the problem of location failure on the traditional both-terminal traveling waves based power line fault location caused by any fault in locating equipment, startup failure and time record error, a network-based fault location algorithm w...
2008 Vol. 28 (31): 48-53 [
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54
SUONAN Jia-leLIU KaiSU Xiao-huaZHANG Jian-kangLI Hai-qiangZHANG Yi-ningKANG Xiao-ning
A Novel Transmission Line Pilot Protection Based on Fault Component Integrated Impedance
Based on the ratio between the sum of two terminals fault component voltage phasor of the transmission line and the sum of two terminals current phasor of the same line, which is defined as fault component integrated impedance, a new transmission line pil...
2008 Vol. 28 (31): 54-61 [
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LIU Hong-shunLI Qing-minZOU LiangLOU Jie
Secondary Arc Characteristics and Single-phase Autoreclosure Scheme of EHV Transmission Line With Fault Current Limiter
With regard to a 500 kV long-distance transmission line installed with zinc oxide surge arrester (MOA) based FCL (fault current limiter), the influence of both the FCL bypass switch operation and the different arc resistances on the characteristics of the...
2008 Vol. 28 (31): 62-67 [
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动力经济
68
SUN Li-yongZHANG YanJIANG Chuan-wen
A Decision-making Model and Its Solution of GENCO's Bidding Strategy Based on SP/A Theory
A new decision-making model of generation company's (GENCO's) biding strategy based on the security, potential and aspiration (SP/A) theory and self-schedule is presented in this paper. The opportunity cost of economic theory is used to analyze and evalua...
2008 Vol. 28 (31): 68-73 [
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74
ZENG LiangQI XiangCHEN Ying-chun
Bidding Strategy for Generating Firm Based on Imitation Learning
In electricity markets with repeated games, GenCos' bidding strategies and learning behaviors are complex dynamic problems. The research thinking and simulation methods of the above hot issues are reviewed. To simulate and study GenCos' learning behaviors...
2008 Vol. 28 (31): 74-80 [
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输配电及供电
81
YUAN FengYANG Hong-gengLIN Cheng-hui
A Method for Voltage Sag Detection Based on Time-varying Kalman Filter With Compensation Component
Aiming at the problem of voltage sag real-time detection, the time-varying Kalman filter with compensation component is presented. The model of Kalman filter with compensation component is constructed by decomposing sag voltage into steady component and c...
2008 Vol. 28 (31): 81-87 [
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88
YONG JingSUN Cai-xinLI Jian-boZHOU Hai-bingCHEN Liang
Light Flicker Characteristics Caused by Interharmonics and Flicker Limit Curve
Variable frequency drives(VFDs) are popular devices in power system. Interharmonics produced by VFDs bring on remarkable power quality problem-voltage flicker. Based on heat balance equation of incandescent light, time dependent function of luminous flux...
2008 Vol. 28 (31): 88-93 [
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ZHOU De-jiaZHAO Zheng-mingYUAN Li-qiangFENG BoZHAO Zhi-qiang
Implementation of a Photovoltaic Grid-connected System Based on Improved Maximum Power Point Tracking
As the power transmission from the photovoltaic (PV) array into the grid in the PV grid-connected system depends on the insolation, temperature, and array voltage, it is necessary to control the operating points to draw the maximum power of the solar arra...
2008 Vol. 28 (31): 94-100 [
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高电压技术
101
NIU BenZENG RongLI HuanWANG Bo
Design of Non-electrode Power Frequency Electric Field Sensor
The existing measurement methods and applications are analyzed in this paper. A kind of non-electrode power frequency electric field sensor was developed based on the domain inversion of the LiNbO3 crystal plate. This kind of sensor was fabricated by inte...
2008 Vol. 28 (31): 101-107 [
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108
YANG Ting-fangLIU PeiLI ZheZENG Xiang-jun
A New Combination Forecasting Model for Concentration Prediction of Dissolved Gases in Transformer Oil
To improve fault prediction for power transformer, a new model of combination forecasting with optimal weights was proposed. Four existing methods namely Gray theory, BP neural network, Genetic Algorithm and Kalman filtering arithmetic were adopted synthe...
2008 Vol. 28 (31): 108-113 [
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114
LIU Shuang-baoL ChaoYU Ji-laiWANG Li-xin
Application of Hilbert-Huang Transform in Pattern Recognition for Partial Discharge of Transformers
Time-frequency analysis is an efficient method in feature extraction for transformer partial discharge. The shortcomings of wavelet transform were discussed firstly as approaches to analyze non-stationary signals; then the theoretical framework of Hilbert...
2008 Vol. 28 (31): 114-119 [
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120
QI BingTANG Liang-ruiZHANG Jing
Research on Measurement of Hydrophobicity of Insulators
Measurement of hydrophobic is not only a main way to evaluate the performance of insulators, but also an important factor to ensure the safety of insulators．In this paper, image processing technology is used to measure the hydrophobicity insulators．Thro...
2008 Vol. 28 (31): 120-124 [
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125
ZANG Chun-yanHE Jun-jiaLI JinLIU Cheng-yanWANG Li-zhongLUO Fu-biao
Contact Resistance and Surface Film of Sealed Relay Contacts
The contact resistance and the surface film on the contact of sealed relay were researched, as well as the experiment of film forming simulation and verification were designed. By comparing and analyzing the contact resistances and film status of contacts...
2008 Vol. 28 (31): 125-130 [
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