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Wu Xixiu
School of Automation, Wuhan University of Technology, Wuhan, China

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Journal article
Published: 27 May 2020 in Applied Energy
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Reasonable capacity configuration of wind farm, photovoltaic power station and energy storage system is the premise to ensure the economy of wind-photovoltaic-storage hybrid power system. We propose a unique energy storage way that combines the wind, solar and gravity energy storage together. And we establish an optimal capacity configuration model to optimize the capacity of the on-grid wind-photovoltaic-storage hybrid power system. The model takes the total cost of the system as the objective. Moreover, three evaluation indexes are put forward to evaluate the system, which are the complementary characteristics of wind and solar, the loss rate of power supply and the contribution rate of wind-photovoltaic-storage hybrid power system. Under the two scenarios of constant electricity price and time-of-use electricity price, the Cat Swarm Optimization is applied in this study to solve the model. In addition, we compare the gravity energy storage way with battery energy storage and compressed air energy storage. By comparing the three optimal results, it can be identified that the costs and evaluation index values of wind-photovoltaic-storage hybrid power system with gravity energy storage system are optimal and the gravity energy storage system is economically viable. Meanwhile, the gravity energy storage system has the natural advantage in the mountainous areas, which can be promoted in renewable energy generation.

ACS Style

Hui Hou; Tao Xu; Xixiu Wu; Huan Wang; Aihong Tang; Yangyang Chen. Optimal capacity configuration of the wind-photovoltaic-storage hybrid power system based on gravity energy storage system. Applied Energy 2020, 271, 115052 .

AMA Style

Hui Hou, Tao Xu, Xixiu Wu, Huan Wang, Aihong Tang, Yangyang Chen. Optimal capacity configuration of the wind-photovoltaic-storage hybrid power system based on gravity energy storage system. Applied Energy. 2020; 271 ():115052.

Chicago/Turabian Style

Hui Hou; Tao Xu; Xixiu Wu; Huan Wang; Aihong Tang; Yangyang Chen. 2020. "Optimal capacity configuration of the wind-photovoltaic-storage hybrid power system based on gravity energy storage system." Applied Energy 271, no. : 115052.

Journal article
Published: 25 November 2019 in Applied Sciences
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Gas insulated substations (GISs) are broadly used for transmission and distribution in electric power networks. Very fast transient overvoltage (VFTO) caused by SF6 discharge during switching operations in a GIS may threaten the insulation of electrical equipment. In this paper, a novel VFTO suppression method with great prospects in engineering, called the spiral tube damping busbar, is proposed. The suppressing mechanism of the new method is analyzed. The structure and the design characteristics of the damping busbar are introduced as well. Moreover, a calculation method for the self-inductance of the damping busbar at high frequency is presented. According to the structural characteristics of the damping busbar, the inductance effect on suppressing VFTO is analyzed. A further improvement in damping VFTO is investigated by designing a spiral litz coil connected in series with the busbar, which increases the damping effect. The simulation results show that the improved damping busbar has a significant suppressing effect on the amplitude and the frequency of VFTO.

ACS Style

Reem A. Almenweer; Yi-Xin Su; Wu Xixiu; Su Yixin. Numerical Analysis of a Spiral Tube Damping Busbar to Suppress VFTO in 1000 kV GIS. Applied Sciences 2019, 9, 5076 .

AMA Style

Reem A. Almenweer, Yi-Xin Su, Wu Xixiu, Su Yixin. Numerical Analysis of a Spiral Tube Damping Busbar to Suppress VFTO in 1000 kV GIS. Applied Sciences. 2019; 9 (23):5076.

Chicago/Turabian Style

Reem A. Almenweer; Yi-Xin Su; Wu Xixiu; Su Yixin. 2019. "Numerical Analysis of a Spiral Tube Damping Busbar to Suppress VFTO in 1000 kV GIS." Applied Sciences 9, no. 23: 5076.

Journal article
Published: 13 September 2019 in Procedia Computer Science
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Line loss, as one of the most important economic indicator to evaluate the quality of the power distribution network, the importance of monitoring it is self-evident. A new method is presented to calculate the line loss, which can consider the three-phase unbalance degree. Based on this algorithm,a line loss monitoring system is designed which apply the master-slave machine technology. This paper focus on the synchronous circuit between the master machine and the slave machine. In order to get the three-phase unbalance degree, wireless communication is adopted to compare the standard signal and the actual signal. The software chart about the monitoring algorithm is introduced as well. A performance test is conducted after the system design accomplishing, the test results show that this system can realize the line loss monitoring function very well.

ACS Style

Wei Meifang; Long Min; Li Junyi; Pang Wenlong; Wu Xixiu. Research on the Monitoring System Design for the Line Loss of the Distribution Line Based on Dynamic Three-phase Unbalance Degree. Procedia Computer Science 2019, 155, 815 -821.

AMA Style

Wei Meifang, Long Min, Li Junyi, Pang Wenlong, Wu Xixiu. Research on the Monitoring System Design for the Line Loss of the Distribution Line Based on Dynamic Three-phase Unbalance Degree. Procedia Computer Science. 2019; 155 ():815-821.

Chicago/Turabian Style

Wei Meifang; Long Min; Li Junyi; Pang Wenlong; Wu Xixiu. 2019. "Research on the Monitoring System Design for the Line Loss of the Distribution Line Based on Dynamic Three-phase Unbalance Degree." Procedia Computer Science 155, no. : 815-821.

Journal article
Published: 13 September 2019 in Procedia Computer Science
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It is very important and necessary to carry out the research on improving the lighting protection level for the strong lighting area, especially for the distribution line. For this propose, the paper focus on studying the lighting protection level using arrester and grounding line with10kV distribution line. Take Qingyuan as an example, the characteristics of lighting activity is analyzed. The simulation model applying arrester and grounding line to protect 10kV distribution line is set up, respectively. And the protecting effect of the two method is compared. Besides, the economic efficiency is also studied. Based on the simulation and the economic analysis, a synthesis lighting protection measure is presented, which can greatly improve the lighting protection level of 10kV distribution line.

ACS Style

Xiaoliang Tang; Fang Yang; Zhongyu Zheng; Yunfeng Hu; Xixiu Wu; Hui Hou. Research on the Improving Lighting Protection Level for Strong Lightning Activity Area and Easily Suffering Lighting Strike Distribution Line. Procedia Computer Science 2019, 155, 809 -814.

AMA Style

Xiaoliang Tang, Fang Yang, Zhongyu Zheng, Yunfeng Hu, Xixiu Wu, Hui Hou. Research on the Improving Lighting Protection Level for Strong Lightning Activity Area and Easily Suffering Lighting Strike Distribution Line. Procedia Computer Science. 2019; 155 ():809-814.

Chicago/Turabian Style

Xiaoliang Tang; Fang Yang; Zhongyu Zheng; Yunfeng Hu; Xixiu Wu; Hui Hou. 2019. "Research on the Improving Lighting Protection Level for Strong Lightning Activity Area and Easily Suffering Lighting Strike Distribution Line." Procedia Computer Science 155, no. : 809-814.

Conference paper
Published: 10 July 2019 in IOP Conference Series: Materials Science and Engineering
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In order to intensively study the exterior transient electromagnetic interference characteristics caused by disconnector operation in Gas Insulated Switchgear, experimental research of exterior transient electromagnetic interference under switching conditions is performed in this paper. Based on 330kV GIS test platform, with the method of resistive impedance divider, TEV is measured with Pintech P6039A high-voltage probe and Yokogawa DLM2054 oscilloscope by using resistor voltage divider GIS exterior radiation electromagnetic circuit is also established using antenna theories, biconical antenna and spectrum analyzer etc. The exterior transient electromagnetic interference waveform and characteristics are precisely measured. By the contrast analysis of TEV and radiation electromagnetic waveforms, results can be summarized as followed: ① The TEV waveform caused by opening and closing of disconnecting switch is front sparse and rear dense, and its amplitude is low at the fore and high over the back; The electric field strength is weaker compared to the electromagnetic compatibility of normal substation.

ACS Style

Tao Yang; Liang Huang; Jianrong Wu; Junkai Huang; Wenlong Pang; Xixiu Wu. Experimental Research of Electromagnetic Interference Caused by Disconnector Operation in Gas Insulated Switchgear. IOP Conference Series: Materials Science and Engineering 2019, 486, 012096 .

AMA Style

Tao Yang, Liang Huang, Jianrong Wu, Junkai Huang, Wenlong Pang, Xixiu Wu. Experimental Research of Electromagnetic Interference Caused by Disconnector Operation in Gas Insulated Switchgear. IOP Conference Series: Materials Science and Engineering. 2019; 486 (1):012096.

Chicago/Turabian Style

Tao Yang; Liang Huang; Jianrong Wu; Junkai Huang; Wenlong Pang; Xixiu Wu. 2019. "Experimental Research of Electromagnetic Interference Caused by Disconnector Operation in Gas Insulated Switchgear." IOP Conference Series: Materials Science and Engineering 486, no. 1: 012096.

Conference paper
Published: 10 July 2019 in IOP Conference Series: Materials Science and Engineering
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The corona discharge pulse current has double exponential distribution characteristics. On this basis, the electromagnetic radiation model of corona discharge is established by using the theory of electric dipole. The corona discharge characteristics are analysed and compared with the measured results of 1000kV UHV ac transmission line. The results show that the electromagnetic field strength increases first and then decreases with time, and at the same time, the electromagnetic field strength decreases exponentially with distance. The simulated and predicted corona discharge radiation characteristics have the same variation law as the measured data, which verifies the correctness of the model.

ACS Style

Chaoqun Li; Song Xu; Zhuqing Xia; Xin Yang; Xixiu Wu. Research on Electromagnetic Radiation Model of Corona Discharge with UHV AC Transmission Lines. IOP Conference Series: Materials Science and Engineering 2019, 486, 012120 .

AMA Style

Chaoqun Li, Song Xu, Zhuqing Xia, Xin Yang, Xixiu Wu. Research on Electromagnetic Radiation Model of Corona Discharge with UHV AC Transmission Lines. IOP Conference Series: Materials Science and Engineering. 2019; 486 (1):012120.

Chicago/Turabian Style

Chaoqun Li; Song Xu; Zhuqing Xia; Xin Yang; Xixiu Wu. 2019. "Research on Electromagnetic Radiation Model of Corona Discharge with UHV AC Transmission Lines." IOP Conference Series: Materials Science and Engineering 486, no. 1: 012120.

Conference paper
Published: 10 July 2019 in IOP Conference Series: Materials Science and Engineering
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The paper proposes a designed scheme for the fault detection system of low voltage cable breakage in power system. By analyzing the characteristics of low voltage power line communication channel, establishing the channel characteristic model and comparing the measurement data with the simulation model, the author summarizes the impedance characteristics, noise characteristics and attenuation characteristics. It can be concluded that the suitable frequency range for communication is between 120kHz and 20kHz. The signal modulation method is studied, that the spread spectrum modulation is a preferred method. It also shows good results in the simulation. The object testing is done. The device and test method selected by author can be used to realize the early warning function of the power system low-voltage cable disconnection fault.

ACS Style

Bochuan Wang; Xixiu Wu; Wei Zhou; Yunfeng Hu; Chao Li; Jinrui Tang. Design of the Disconnection Fault Detection System for Low Voltage Cable in Power System. IOP Conference Series: Materials Science and Engineering 2019, 486, 012095 .

AMA Style

Bochuan Wang, Xixiu Wu, Wei Zhou, Yunfeng Hu, Chao Li, Jinrui Tang. Design of the Disconnection Fault Detection System for Low Voltage Cable in Power System. IOP Conference Series: Materials Science and Engineering. 2019; 486 (1):012095.

Chicago/Turabian Style

Bochuan Wang; Xixiu Wu; Wei Zhou; Yunfeng Hu; Chao Li; Jinrui Tang. 2019. "Design of the Disconnection Fault Detection System for Low Voltage Cable in Power System." IOP Conference Series: Materials Science and Engineering 486, no. 1: 012095.

Journal article
Published: 18 January 2019 in The Journal of Engineering
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This paper focus on the research about the probability and practicability of 330 kV GIS structure design with three phase in one tank, which represents the miniaturisation and compact developing trend of GIS. The design principle is proposed according to the volume of three phase in one tank (structure A) is generally smaller than that of the sum volume of three single phase (structure B). Then, the dimension size of 330 kV GIS with structure A is presented. To solve the weak insulation-level problem between phases of structure A, which prevents it from being used in high-voltage power system especially above 330 kV, an electromagnetic-temperature-flow multi-physical field coupling model considering eddy effect and skin effect is established to analyse the influencing factors on the insulation level of internal GIS. Therefore, the insulation level between the phases of structure A is calculated under the condition of power frequency and short circuit, respectively. The results show that the insulation margin of 330 kV GIS with structure A is enough and completely meet the insulation requirement of GIS. Furthermore, compared with structure B, structure A has lower temperature rise and energy consumption.

ACS Style

Pang Wenlong; Wu Xixiu; Cheng Shimin; Wu Shipu. Preliminary study on the structure design of 330 KV GIS with three phase in one tank. The Journal of Engineering 2019, 2019, 3092 -3097.

AMA Style

Pang Wenlong, Wu Xixiu, Cheng Shimin, Wu Shipu. Preliminary study on the structure design of 330 KV GIS with three phase in one tank. The Journal of Engineering. 2019; 2019 (16):3092-3097.

Chicago/Turabian Style

Pang Wenlong; Wu Xixiu; Cheng Shimin; Wu Shipu. 2019. "Preliminary study on the structure design of 330 KV GIS with three phase in one tank." The Journal of Engineering 2019, no. 16: 3092-3097.

Journal article
Published: 10 January 2019 in The Journal of Engineering
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To meet the special insulation demand of the DC transmission system with the highest voltage in the world, a new kind of ±1 100 kV DC voltage divider is designed. The reliability of the new structure voltage divider under the action of lightning impulse is studied. To achieve the voltage and electric field strength distribution of the voltage divider, a 3D transient electric field calculation model is established and a lightning impulse test for the prototype is carried out. The results reveal that (1)The voltage and electric field strength distributing on the voltage divider changing with time show a cumulative effect. (2)The maximum electric field strength occurs at the junction where the first grading ring connecting to the internal bushing. (3)The maximum current of resistance occurs at the peak voltage of lightning impulse with the corresponding time is 1.2 µs. (4)The voltage distributing on the capacitance imply that the capacitance really does play the role of equalisation voltage when the voltage divider suffering lightning impulse. (5)The prototype of HVDC voltage divider passing through the lightning impulse test successfully strongly demonstrates the correctness and reliability of the new structure ±1 100 kV voltage divider voltage.

ACS Style

Wu Shipu; Pang Wenlong; Yang Zhining; Zhang Kejie; Wu Xixiu. Study on the reliability of new kind of ±1 100 Kv DC voltage divider under the action of impulse voltage. The Journal of Engineering 2019, 2019, 2575 -2579.

AMA Style

Wu Shipu, Pang Wenlong, Yang Zhining, Zhang Kejie, Wu Xixiu. Study on the reliability of new kind of ±1 100 Kv DC voltage divider under the action of impulse voltage. The Journal of Engineering. 2019; 2019 (16):2575-2579.

Chicago/Turabian Style

Wu Shipu; Pang Wenlong; Yang Zhining; Zhang Kejie; Wu Xixiu. 2019. "Study on the reliability of new kind of ±1 100 Kv DC voltage divider under the action of impulse voltage." The Journal of Engineering 2019, no. 16: 2575-2579.

Journal article
Published: 04 January 2019 in The Journal of Engineering
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Very fast transient over voltage (VFTO) is a unique electromagnetic transient phenomenon occurring in Gas Insulated Substation (GIS), which determines the insulation level of the GIS (above 330 kV). Unfortunately, up to the present, there is no standard VFTO waveform to test the high voltage equipment to ensure the safety of power grid. For this reason, this paper focuses on obtaining the standard VFTO waveform through finding a method to fit the curve of VFTO. Hence, a UHV disconnector operation experiment of GIS was carried out on the UHV GIS test platform. The representative waveform of VFTO generated by a single SF6 gas discharge was extracted from the measured data. Furthermore, The Fast Fourier Transformer is applied to analyze the frequency features of VFTO. As one of the switchgear operation voltage, VFTO can be concluded to be a superposition of the power-frequency waveform with the non-periodic impulse waveform. Thus, it is found that The Squares Method is convenient for fitting the expression of VFTO according to its transient characteristics. Then the standard VFTO waveform can be obtained from the fitting expression, which coincides well with the measured waveform. The simulation results using ATP-EMTP software are compared with the calculation results and the measured results.

ACS Style

Reem A. Almenweer; Su Yixin; Wu Xixiu. Research on the fitting method to describe the mathematical expression of VFTO in GIS. The Journal of Engineering 2019, 2019, 2053 -2057.

AMA Style

Reem A. Almenweer, Su Yixin, Wu Xixiu. Research on the fitting method to describe the mathematical expression of VFTO in GIS. The Journal of Engineering. 2019; 2019 (16):2053-2057.

Chicago/Turabian Style

Reem A. Almenweer; Su Yixin; Wu Xixiu. 2019. "Research on the fitting method to describe the mathematical expression of VFTO in GIS." The Journal of Engineering 2019, no. 16: 2053-2057.

Journal article
Published: 01 January 2018 in Journal of Advances in Computer Networks
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ACS Style

Bochuan Wang; Xixiu Wu. Research on the Characteristics of the Low Voltage Power Line Carrier Communication Channel. Journal of Advances in Computer Networks 2018, 103 -106.

AMA Style

Bochuan Wang, Xixiu Wu. Research on the Characteristics of the Low Voltage Power Line Carrier Communication Channel. Journal of Advances in Computer Networks. 2018; ():103-106.

Chicago/Turabian Style

Bochuan Wang; Xixiu Wu. 2018. "Research on the Characteristics of the Low Voltage Power Line Carrier Communication Channel." Journal of Advances in Computer Networks , no. : 103-106.

Conference paper
Published: 04 August 2015 in Lecture Notes in Electrical Engineering
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To characterize the complex physical behavior of power transformer’s internal fault is very important for its protection and fault detection. Therefore, this chapter presents a complete three-dimensional-coupled field-circuit model to analyze the internal short-circuit faults of power transformer. The coupled mechanism and modeling which are used to evaluate the performance of transformer under internal short-circuit fault condition are introduced as well. A 500 kVA, three-phase, oil-immersed, core-type transformer is modeled by this field-circuit 3D-coupled method. Based on this, a deep analysis for turn-to-turn and internal phase-to-phase faults is made. The distribution of magnetic field and electrical characteristics which contribute to the development of reliable and sensitive fault detection methods are discussed in this study.

ACS Style

Guozhao Hu; Xixiu Wu; Fei Long; Shipu Wu. A 3D-Coupled Field-Circuit Model for Analyzing the Internal Short-Circuit Faults of Power Transformer. Lecture Notes in Electrical Engineering 2015, 55 -64.

AMA Style

Guozhao Hu, Xixiu Wu, Fei Long, Shipu Wu. A 3D-Coupled Field-Circuit Model for Analyzing the Internal Short-Circuit Faults of Power Transformer. Lecture Notes in Electrical Engineering. 2015; ():55-64.

Chicago/Turabian Style

Guozhao Hu; Xixiu Wu; Fei Long; Shipu Wu. 2015. "A 3D-Coupled Field-Circuit Model for Analyzing the Internal Short-Circuit Faults of Power Transformer." Lecture Notes in Electrical Engineering , no. : 55-64.