Volume 37,Issue 7,2014 Table of Contents

1 Effect-cause analysis for reliability evaluation of complex distribution system

ZHAO Yuan , ZHAO Yongshuai , WANG Jie , FAN Fei

2014, 37(7):1-10. DOI: 10.11835/j.issn.1000-582X.2014.07.001

[Abstract](2386) [HTML](3422) [PDF 10.02 M](7772)

Abstract:
The traditional distribution system reliability assessment model is mostly based on the failure mode and effects analysis，which is proceeding from a known cause to a necessarily related effect，i.e.enumerating fault events and then analyzing their effects

2 Analysis of LLCC resonant driving circuit for ultrasonic motor

FU Ping

2014, 37(7):11-19. DOI: 10.11835/j.issn.1000-582X.2014.07.002

[Abstract](2138) [HTML](627) [PDF 10.01 M](3527)

Abstract:
The dynamic characteristic of USM(ultrasonic motor) will be changed greatly when USM rotates and is greatly influenced by the variation in the quality of the motor, while the LLCC driving circuit can generate a geometric frequency which can make the LLCC

3 Dependence of lossy DCOPF on reference bus and power system rank-short problems

JIANG Hui , PENG Jianchun

2014, 37(7):20-26. DOI: 10.11835/j.issn.1000-582X.2014.07.003

[Abstract](1606) [HTML](322) [PDF 6.23 M](1216)

Abstract:
With the developments of smart grid，the application of DC-power-flow based OPF with grid losses modeling becomes wilder and wilder. However，the dependence of this OPF solution，such as generation MW solution，on reference bus is seldom investigated. For thi

4 Research and application of typhoon risk early warning system for power grid

XIONG Xiaofu , WENG Shijie , WANG Jian , FANG Song , PENG Song , HU Huakeng

2014, 37(7):27-32. DOI: 10.11835/j.issn.1000-582X.2014.07.004

[Abstract](2524) [HTML](477) [PDF 6.31 M](1609)

Abstract:
In order to enhance the ability of power grid to withstand typhoon disaster，an early warning method for power transmission risk of typhoon is proposed in this paper from the perspective of operation. According to the typhoon forecast information provided

5 Collaborative optimization of twist beam suspension bushing mounting angle and handling performance

GAO Jin , NIU Ziru , YANG Lu , YANG Xiujian , ZHANG Kun

2014, 37(7):33-45. DOI: 10.11835/j.issn.1000-582X.2014.07.005

[Abstract](2910) [HTML](768) [PDF 17.13 M](1269)

Abstract:
To study the influence of twist beam suspension bushing mounting angle on suspension K&C characteristics and handling，and investigate inherent relationship between suspension characteristics and full vehicle handling variety which is caused by bushing mou

6 Analysis on performance stability of proton exchange membrane fuel cell in the dead-end mode

JIA Qiuhong , HAN Ming , DENG Bin , KE Jian

2014, 37(7):46-52. DOI: 10.11835/j.issn.1000-582X.2014.07.006

[Abstract](1969) [HTML](618) [PDF 8.03 M](1242)

Abstract:
It’s a main problem to guarantee the performance stability of proton exchange membrane fuel cell in the dead-end mode. The water accumulation of the anode channel is one of the key factors affecting the performance stability of fuel cells. The reason why

7 Effect of alkali metal on co-combustion characteristics of coal and biomass under oxygen-enriched atmosphere

PU Ge , PENG Ruixiang

2014, 37(7):53-58. DOI: 10.11835/j.issn.1000-582X.2014.07.007

[Abstract](1819) [HTML](373) [PDF 6.81 M](1210)

Abstract:
Combustion characteristics of blends of meagre coal and cornstalk are investigated using thermo-gravimetric analysis under oxy-fuel atmosphere. The results show that the ignition and burnout temperatures of fixed carbon are reduced in oxy-fuel atmosphere

8 Upper bound solution of reliability for slope based on limit analysis method

ZHANG Daobing , PAN Qiujing , YANG Xiaoli , LI Lin , LING Tao

2014, 37(7):59-65. DOI: 10.11835/j.issn.1000-582X.2014.07.008

[Abstract](1839) [HTML](354) [PDF 7.04 M](1155)

Abstract:
In order to reduce errors of reliability for slope in function establishment，parameter estimation and algorithm selection，a new reliability model for slope is established based on the upper-bound theory of limit analysis. The statistical characteristics o

9 Synthesis and optical properties of novel 9-substituent-N-octyl-perylene-3，4-dicerboximide derivatives

GAO Fang , HU Nüdan , CHU Liuchao , GAO Yingmeng , YANG Long , LI Hongru , GONG Yulong

2014, 37(7):66-73. DOI: 10.11835/j.issn.1000-582X.2014.07.009

[Abstract](1741) [HTML](377) [PDF 9.02 M](1128)

Abstract:
Three novel perylene monoimide derivatives，i.e.9-phenyl-N-octyl-perylene-3，4-dicarb-oximide (C1)，9-(4-methoxyphenyl)-N-octyl-perylene-3，4-dicarboximide (C2) and 9-(N，N′-diphenylaminophenyl)-N-Octyl-perylene-3，4-dicarboximide (C3)are synthesized via Suzuki

10 Study of extraction process of polysaccharides from cortex mori radicis and evaluation of their antioxidantion

CHEN Hua , JIA Qiao , ZHAO Ronghua , REN Xiaoshan , CHEN Zuqin

2014, 37(7):74-80. DOI: 10.11835/j.issn.1000-582X.2014.07.010

[Abstract](1721) [HTML](377) [PDF 6.35 M](1257)

Abstract:
To study the extraction process of polysaccharides from Mori Cortex and evaluate their antioxidant activity，so as to provide reference basis and theoretical support for their application. Ultrasonic is chosen as an auxiliary means to extract polysaccharid

11 Analysis of diffusion equation based on steady state assumption：Ⅱ.approximate analytic solutions

WANG Chengshan , LI Dandan , SHI Yanwen , YAN Cheng , MU Xiaojing

2014, 37(7):81-89. DOI: 10.11835/j.issn.1000-582X.2014.07.011

[Abstract](1963) [HTML](473) [PDF 10.98 M](1186)

Abstract:
Based on the analytic solutions obtained by steady state approximation，the approximate analytic solutions on a closed interval is completed. It is concluded by some theoretical analysis and some comparisons with numerical solutions that the diffusive proc

12 An experimental study on mechanical properties of EPS in SIPs

DU Qiang , YAO Xinghao , LV Jing

2014, 37(7):90-97. DOI: 10.11835/j.issn.1000-582X.2014.07.012

[Abstract](1928) [HTML](365) [PDF 8.69 M](1181)

Abstract:
Tensile，compressive and double shear experimental tests are calculated on Oriented Stranded Board (OSB)skinned and expanded polystyrene (EPS)cored Structural Insulated Panels (SIPs)with various thicknesses，and mechanical properties，stress-strain curves an

13 Analysis on tail-water temperature of river water-source heat pump and its optimization

DING Yong , ZHONG Yunxiang , HAN Muchen

2014, 37(7):98-103. DOI: 10.11835/j.issn.1000-582X.2014.07.013

[Abstract](1711) [HTML](342) [PDF 6.23 M](1122)

Abstract:
The temperature field diffusion issue of a water source heat pump drainage system in a certain river is studied，and dynamic tests to the water temperature of the drainage canal sector and the outfall area are carried out. The temperature drop trends of th

14 Effect of salt content on the change of physicochemical characteristics of restaurant garbage during aerobic composting

REN Lianhai , HUANG Yanbing , WANG Pan

2014, 37(7):104-109. DOI: 10.11835/j.issn.1000-582X.2014.07.014

[Abstract](1893) [HTML](893) [PDF 6.53 M](1415)

Abstract:
In order to study the effect of salt content on the compost of restaurant garbage，experiments are carried out in 4 sets of horizontal composting reactors. The salt contents of the 4 sets of windrow are 0%，1%，1.5% and 2% respectively. The influences of sal

15 An optimized method to evaluate heat stress with WBGT-index

XU Mengnan , LI Baizhan , YANG Xincheng , LIU Meng

2014, 37(7):110-114. DOI: 10.11835/j.issn.1000-582X.2014.07.015

[Abstract](1565) [HTML](396) [PDF 5.17 M](1265)

Abstract:
The purpose of this study is to improve the influence evaluation method of heat stress on human body in high temperature environment. High temperature environment (WBGT=30，28，26 ℃)is created in climatic chamber to research manual labor’s heart rate variat

16 Associative learning of memristive synapses circuits based on spiking neural networks

LI Chuandong , GE Junhui , TIAN Yuan

2014, 37(7):115-124. DOI: 10.11835/j.issn.1000-582X.2014.07.016

[Abstract](2344) [HTML](862) [PDF 11.49 M](2143)

Abstract:
Memristor is a resistance which has dynamic characteristics，which can be changed with respect to the excitation voltage and has similar characteristics of biological synaptic. So values of the synaptic weight can be stored by memristors. An “integrate-and

17 Analysis on shifter of LDPC decoder based on IEEE802.11n

XIANG Bing , WANG Menglu , ZHANG Shaohui

2014, 37(7):125-130. DOI: 10.11835/j.issn.1000-582X.2014.07.017

[Abstract](1691) [HTML](429) [PDF 8.55 M](1268)

Abstract:
SRSN shifter structure of LDPC decoder for IEEE802.11n is improved. In the second level，the select port “sel” is added to implement bi-directional shift function. A DC simulation on the three shifters of QSN，SRSN and the improved shifter is conducted in t

18 Graphical simulation algorithm for Chinese traditional ink painting based on Perlin noise

LUO Yan , LUO Jiangmei , WU Zhongfu , LI Qing

2014, 37(7):131-135. DOI: 10.11835/j.issn.1000-582X.2014.07.018

[Abstract](1580) [HTML](624) [PDF 6.54 M](1975)

Abstract:
It’s a challenge brought by simulating Chinese traditional ink drawing. Based on analyzing the art effects of Chinese traditional ink painting，a novel graphical simulation algorithm based on Perlin noise is proposed. The experiment results indicate that t

19 A fault diagnosis method of analog circuit using energy calculation and Hopfield neural network

LI Penghua , JIANG Jianchun , QIU Baomei , LIANG Zhanwei

2014, 37(7):136-146. DOI: 10.11835/j.issn.1000-582X.2014.07.019

[Abstract](2175) [HTML](3571) [PDF 16.94 M](7372)

Abstract:
A new Hopfield neural network fault diagnosis method using the wavelet packet analysis and energy calculation as fault feature preprocessing is presented for the analog circuit. In the proposed method，the ideal and actual responses of the fault analog cir

20 The competing relationship of micro-grid and large-grid and its impact on social welfare effects

LONG Yong , WANG Guteng , MENG Weidong , WANG Yu

2014, 37(7):147-152. DOI: 10.11835/j.issn.1000-582X.2014.07.020

[Abstract](1722) [HTML](384) [PDF 5.09 M](1171)

Abstract:
Micro-grid is considered to be an effective way to improve the efficiency of distributed power, which has many advantages in energy conservation, renewable energy use, and solving supply problems in remote areas and islands, etc. Implementation of micro-g

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