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Study on Electricity Business Expansion and Electricity Sales Based on Seasonal Adjustment

IOP Conference Series: Materials Science and Engineering 2017年第1期199卷

作者： Yumin Zhang Xueshan Han Yong Wang Li Zhang Guangsen Yang Donglei Sun Bolun Wang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan 250061 China State Grid Jiangsu Electric Power Maintenance Branch Company Nanjing China Economic & Technology Research Institute of State Grid Shandong Electric Power Company Jinan China

[1] proposed a novel analysis and forecast method of electricity business expansion based on Seasonal Adjustment, we extend this work to include the effect the micro and macro aspects, respectively. From micro aspect, we introduce the concept of load factor to forecast the stable value of electricity consumption of single new consumer after the installation of new capacity of the high-voltage transformer. From macro aspects, considering the growth of business expanding is also stimulated by the growth of electricity sales, it is necessary to analyse the antecedent relationship between business expanding and electricity sales. First, forecast electricity consumption of customer group and release rules of expanding capacity, respectively. Second, contrast the degree of fitting and prediction accuracy to find out the antecedence relationship and analyse the reason. Also, it can be used as a contrast to observe the influence of customer group in different ranges on the prediction precision. Finally, Simulation results indicate that the proposed method is accurate to help determine the value of expanding capacity and electricity consumption.

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Microgrid operational benefits distribution based on the theory of cooperative game

Microgrid operational benefits distribution based on the the...

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China International Conference on Electricity Distribution, CICED

作者： Wenbo Li Si Yang Ming Li Zhe Jiang Naihu Wu Jiayin Jiang State Grid Shandong Electric Power Research Institute Jinan China Economic & Technology Research Institute State Grid Shandong Electric Power Company Jinan China Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University) Jinan China

ISBN: (纸本)9781467390712

To solve the internal distribution problem of microgrid operation benefit, a benefit distribution method based on the economic operation and cooperative game theory is proposed, which can satisfy individual rationality and global efficiency. It can be used to estimate value of various participants in microgrid and provide references for payment and settlement inside microgrid as well. The influence of characteristics of participants on the result of the distribution is analyzed through a typical example. Results indicates that the method proposed in this paper can realize rational distribution of microgrid benefit, and it could also guide and stimulate participants to improve own characteristics.

关键词： Microgrids Economics Games Mathematical model Game theory

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Cover Feature: Ultrasensitive, Sustainable, and Selective Electrochemical Hydrazine Detection by ALD-Developed Two-Dimensional WO3(ChemElectroChem 2/2018)

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ChemElectroChem 2017年第2期5卷

作者： Zihan Wei Zhenyin Hai Mohammad Karbalaei Akbari Prof. Jie Hu Lachlan Hyde Prof. Stephen Depuydt Prof. Francis Verpoort Prof. Serge Zhuiykov Ghent University Global Campus Department of Applied Analytical & Physical Chemistry 119 Songdomunhwa-ro Yeonsu-gu Incheon South Korea Micro and Nano System Research Center Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering Taiyuan University of Technology Taiyuan 030024 Shanxi PR China Factory of the Future Swinburne University of Technology Hawthorn Australia National Research Tomsk Polytechnic University Lenin Avenue 30 634050 Tomsk Russian Federation Laboratory of Organometallics Catalysis and Ordered Materials State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Chemical and Material Engineering Wuhan University of Technology Wuhan P.R. China

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A novel analysis and forecast method of electricity business expanding based on seasonal adjustment

A novel analysis and forecast method of electricity business...

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IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

作者： Yumin Zhang Xueshan Han Guangsen Yang Yong Wang Li Zhang Xiaofeng Miao Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China State Grid Jiangsu Electric Power Maintenance Branch Company Nanjing China State Grid Shandong Electric Power Company Yantai Electric Power Company Yantai China

ISBN: (纸本)9781509054190

Inefficient utilization of electricity business expanding data in State Grid Companies related departments still exist. It is because of their excessive attention on the speed of electricity supply and the quality of service, but ignores the potential useful information of the data implied in the future electricity sale market. With this regard, this paper proposes a novel analysis and forecast method of electricity business expanding based on seasonal adjustment, which focuses more closely on the relationship between expanding capacity and electricity consumption. Firstly, the seasonal adjustment method on power consumption of customer aims at eliminating the influence of seasonal fluctuation on the trend of electricity consumption growth, seeking the internal rules of their time series, and selecting typical customers that are representative. The release rules of newly installed capacity of the customer group consisted of the selected typical customers can be obtain by the Principal Component Analysis (PCA) method. Secondly, the seasonal adjustments on expanding capacity and electricity sales are respectively used to find their trend cycles (TC). The month that the correlation degree of the two trend cycles is maximal can be found out through the grey correlation analysis method to realize the electricity sales forecasting. Compared to conventional electricity demand forecasting method, the proposed method can effectively overcome the regional power grid unstable problem resulted from the inaccurate statistic rule of the conventional method and improve the accuracy of electricity forecasting. Example analysis verifies the validity and engineering practicability of the proposed method.

关键词： Logistics Forecasting Optimization

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Assessment of impact of unbalancing power allocation on calculating Maximum Loading Point

Assessment of impact of unbalancing power allocation on calc...

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IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

作者： Xiaoming Dong Yiming Wang Yuanyuan Ding Chengfu Wang Hua Sun Xiaoyan Qin Chao Jiang Feng He Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education Shandong University Jinan China Department of Electrical Automation Shandong Labour Vocational and Technology College Jinan China State Grid Shandong Electric Power Company Jinan Power Supply Company Jinan China

ISBN: (纸本)9781509054190

In traditional Power Flow (PF) formulations, the unbalancing power that caused by the transmission power loss (TPL) is provided by sole slack bus, which introduces some errors. Such errors are involved in the results of Continuation Power Flow (CPF) which is based on the parameterized PF formulations. Moreover, for certain class of systems, this kind of errors could be significant and few research centres on assessing the CPF with multiple slack buses (MSB). In addition, the impact of the allocations of the slack buses on PF and CPF results has not been well demonstrated. Therefore, this paper analyses the performances of the PF and CPF formulations involving MSB by applying them to calculate the Maximum Loading Point (MLP). It captures the allocation of the unbalancing power by assigning it to MSB according to a set of proportionality coefficients. Since the formulations could generate different results according to various sets of the proportionality coefficients, it is obvious that optimization techniques could be adopted to give optimal coefficients aiming at specific objectives. A particle swarm optimization (PSO) and CPF based approach is presented to help search the optimal proportionality coefficients for the MSBs with the objective of minimizing the TPL. The case studies based on the IEEE 5-bus test system and the IEEE 14-bus test system show the efficiency of the proposed approaches.

关键词： Companies Optimization

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Chaotic light generation and its application in communication, sensor, radar

Chaotic light generation and its application in communicatio...

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International Conference on Optical Communications and Networks (ICOCN)

作者： Mingjiang Zhang Anbang Wang Yuncai Wang Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi CN

Chaotic light has aroused considerable interest owing to its wide applications. Semiconductor laser, subject to optical feedback, optical injection, or optoelectronic feedback, can readily emit large-amplitude optical chaotic signals, and hence become the most suitable chaotic light sources. This paper illustrates the chaotic light generation based on semiconductor laser and its application in optical time domain reflectometry, distributed fiber sensing and photonic UWB radar.

关键词： Chaotic communication Optical feedback Optical fibers Optical attenuators Optical fiber sensors Optical reflection

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Denoising for different noisy chaotic signal based on wavelet transform

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Sensors and transducers 2014年第1期163卷 155-160页

作者： Ma, Jun Wu, Ya-Jing Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan 030024 China

In a complete Chaotic radar ranging system, its effective range is often limited by the randomness of the chaotic signal itself and other transmission channel noises or interferences. In order to improve the precision and accuracy of radar ranging system, wavelet transform is proposed to remove different kinds of noise embedded in chaotic signals. White Gaussian noise, colored Gaussian noise as well as sine-wave signal are respectively applied for simulation analysis. Applied for simulation analysis, the experimental results show that wavelet transform can not only remove the chaotic signal mixed in some of the different types of noise, and can also improve the noise ratio. © 2014 IFSA Publishing, S. L.

关键词： Wavelet transforms

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Design of the chaotic signal generator based on LABVIEW

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Sensors and transducers 2014年第1期163卷 135-140页

作者： Zhang, Jian-Guo Zhao, Xiaolei Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan 030024 China

We introduces a new method that can achieve the generation of Colpitts chaotic signal The system is based on virtual instrument platform and combined with MATLAB calculation to achieve the generation of Colpitts chaotic signal and making it analysis with autocorrelation and power spectrum at the same time. Signal channel output of chaotic signal was realized through USB-6009 acquisition module extending DA5405 highspeed DAC (Digital-to-Analog Converter) chip. The system can adjust parameters based on customers' requirements to achieve different frequency chaotic signal generation. Compared with the traditional autonomy Colpitts chaotic signal generator, this generator is simple and clear in structure, simple to operate, strong stability, easy to achieve etc. © 2014 IFSA Publishing, S. L.

关键词： Autocorrelation

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Communication-less harmonic compensation in a multi-bus microgrid through autonomous control of distributed generation grid-interfacing converters

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Journal of Modern Power systems and Clean Energy 2015年第4期3卷 597-609页

作者： Guangqian DING Ran WEI Ke ZHOU Feng GAO Yi TANG Key Laboratory of Power System Intelligent Dispatch and Control(Shandong University) Ministry of EducationJinan 250061China State Grid Jining Electric Power Supply Company Jining 272000China School of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang AveSingapore 639798Singapore

This paper proposes a novel approach to compensate buses voltage and current harmonics through distributed generation(DG)interfacing converter in a multibus *** control approach of each individual DG unit was designed to use only feedback variables of the converter itself that can be measured *** the proposed approach,the adjacent bus voltage is indirectly derived from the measured DG converter output voltage,DG line current and line impedance.A voltage closed-loop controller and a current closed-loop controller are designed to achieve both functions of DG real power generation and harmonics ***,the traditional harmonic measurement devices installed at the bus as well as the long distance communication between the bus and the DG converter are not *** proposed approach can compensate the current harmonics,mitigate the buses voltage distortion and enable the customer devices to be operated in normal conditions within the multi-bus microgrid,and meanwhile relieve the burden of power quality regulator installed at the point of common *** simulations and experimental results are presented to show the operational effectiveness of the proposed approach.

关键词： Multi-bus microgrid Distributed generation Grid-tied converter Harmonic compensation control

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Study on Resonant Characteristics for Higher-Order Modes in Zero Index Metamaterials Loaded with Dielectric Rings

Study on Resonant Characteristics for Higher-Order Modes in ...

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Asia-Pacific Microwave Conference

作者： Binzhao Cao Wenjuan Liang Shuxian Li College of Physics and Optoelectronics Taiyuan University of technology/Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education School of Information Science and Engineering Lanzhou University

ISBN: (纸本)9781479987689

The transmission characteristics of electromagnetic wave in the parallel planar waveguide system filled with zero index metamaterials, in which embedded with dielectric rings, is improved based on the general theoretical analysis. We conceive that higher-order modes can be produced in the dielectric rings under the isotropic medium of zero index metamaterials, and also analyze the condition of producing high order modes and the resonance characteristics for several of the whispering gallery mode (WGM). The theoretical results are simulated by COMSOL and its correctness is verified. The conclusion of this paper has important application value in the manipulation of electromagnetic waves, power allocation and sensing, so on.

关键词： Electromagnetic scattering Indexes Metamaterials Dielectrics Electromagnetics Planar waveguides

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