检索结果-内蒙古大学图书馆

Proceedings of the 3rd International Conference on Information Technologies and electrical Engineering

作者： Xiangqi Xiao Maotao Yang Rui Huang Liang Yang Yanjiao Huang Wencheng Xiao State Grid Hunan Electric Power Company Limited Power Supply Service Center(Metrology Center) Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha China Guangzhou Guangjian Construction Engineering Testing Center Co. Ltd. Guangzhou China State Grid Hunan management Training Center Changsha China China Resources Power Holdings Company Limited Shenzhen China

ISBN: (纸本)9781450388665

In view of the increasingly covert and intelligent power theft technology, the industrialization of electricity theft behavior and the gradual penetration into the field of re-electrified energy consumption terminals such as port and shore electricity, this paper establishes a matrix data set for typical industries based on the characteristic extraction technology of electricity consumption behavior.

关键词： Warning Electricity Stealing Re-electrified

来源：评论

学校读者我要写书评

暂无评论

Analysis on Load Characteristics of Distributed Photovoltaic Access to EVs industry

Analysis on Load Characteristics of Distributed Photovoltaic...

引用

Sustainable Power and Energy Conference (iSPEC)

作者： Mouhai Liu Wei Zou Maotao Yang Rui Huang Shumin Wei Minqi Yu Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology State Grid Hunan Electric Power Company Changsha China

The load-characteristic charging of EVs and the power of distributed PVs have lately received great attention for car and electric industry due to their energy conservation and environmental friendliness. However, the disordered charging of EVs together with the distributed photovoltaic has made it challenging to meet the energy efficiency and electric quality. In an effort to overcome this challenge, the Monte Carlo method is adopted to calculate the charging load of EVs both in ordered and disordered way and the mathematical model of photovoltaic cell power is established. The reasonable dispatching in EVs and PVs is detailed demonstrated using MATLAB language, with certain day load in the area under the different circumstances. The proposed load characteristic method opens the door to research in the field of EVs and PVs, greatly enhancing the energy-using efficiency and the electric quality.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Design Verification and Test Techniques for UHF RFID Tag IC

Design Verification and Test Techniques for UHF RFID Tag IC

引用

Sustainable Power and Energy Conference (iSPEC)

作者： Maotao Yang Shumin Wei Mouhai Liu Rui Huang Minqi Yu Fusheng Chen State Grid Hunan Electric Power Company Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha China

ISBN: (纸本)9781728149318

Radio Frequency Identification (RFID) technology has been rapidly developed in recent years. Electronic tag constitutes an important part of RFID system. This paper presents the design verification and test techniques suitable for UHF (Ultra High Frequency) RFID passive tag, which can meet the designers' demand for verification and test. Then, the IC baseband circuit test platform based on field programmable gate array is proposed. The platform can be used to verify the function of baseband circuit at design stage. It can also help designers with HDL (Hardware Description Language) code commissioning, so as to improve the reliability of circuit design, which can greatly improve the success rate of tape-out in practical applications. With regard to IC RF parameter test, this paper comes up with a low-cost test technical solution based on the commercially available card reader and the adjustable attenuator, which can be used to accurately measure the RF parameters such as IC sensitivity and input impedance without special RFID equipment, so as to guide the design of antenna and RFID. Based on the above-mentioned test scheme, the UHF RFID Tag IC that has been developed and taped out is tested in this paper.

关键词： UHF RFID tag IC baseband circuit sensitivity input impedance impedance design verification Radio frequency identification Ultrahigh frequencies Integrated circuits Field programmable gate arrays RFID tags Radio Frequency Identification Device Designers CARD READERS RFID system

来源：评论

学校读者我要写书评

暂无评论

Research on Impact Load measurement Method and Algorithm

Research on Impact Load Measurement Method and Algorithm

引用

2019 IEEE Sustainable Power and Energy Conference, iSPEC 2019

作者： Xiong, Dezhi Wen, He Chen, Shidong Zheng, Xiaoping Yang, Maotao Yang, Shuai Huang, Rui Su, Yuping State Grid Hunan Electric Power Limited Company Power Supply Service Center Metrology Center Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha China Weisheng Group Co. Ltd. Changsha Changsha China Hunan University College of Electrical and Information Engineering Changsha China

ISBN: (纸本)9781728149301

Aiming at the problem that impact load affects energy metering, a method and algorithm for impact load measurement are proposed. The point-by-point power calculation process of impact load and the specific parameters of impact load filter algorithm based on IIR low-pass filter are given. For the key parameters affecting the accurate measurement of impact load, the DC component calibration algorithm, voltage and current gain calibration algorithm, voltage and current offset calibration algorithm, active and reactive gain calibration algorithm, active and reactive offset calibration algorithms are proposed respectively. The impact load experiment scheme is designed, and the error experiments of the State grid meter algorithm and the paper algorithm are carried out respectively. The experimental results show that the overall measurement error of the proposed algorithm is better than the ordinary State Grid meter algorithm, which can accurately measure the impact load electrical energy. © 2019 IEEE.

关键词： Errors

来源：评论

学校读者我要写书评

暂无评论

Proof for the Directivity of Circulation Intensity of Vector Field

Proof for the Directivity of Circulation Intensity of Vector...

引用

作者： Hui-ting XU Ming-da XIONG Can-hui ZHANG Fang YANG Dan ZHAO Jian-hong XIAO Long-min BU State Grid Hunan Electric Power Limited Company Power Supply Service Center (Metrology Center) Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Yiyang Electric Power Company

At present, the introduction of curl is based on the directivity of circulation intensity, which means that circulation intensity under any given normal direction can be expressed as the scalar product between a vector(that is, the curl) and the unit vector in the normal direction. However, there is usually no enough explanation on the validity of the directivity characteristics. Beginning from the definition of circulation intensity, a detailed deduction procedure of the expression of circulation intensity was present under any normal direction by using a square integral path, and the validation of the directivity characteristics was verified. The work in this paper provides students with a feasible mathematical approach to understand the directivity characteristics, and can also be treated as a comprehensive exercise for vector analysis and field theory.

关键词： Electromagnetic field Curl Circulation intensity Vector analysis

来源：评论

学校读者我要写书评

暂无评论

引用

14th International Conference on Natural Computation, Fuzzy Systems and Knowledge Discovery, ICNC-FSKD 2018

作者： Chen, Shidong Chen, Xiangqun Hu, Junhua Lu, Jun Hu, Zesheng Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Hunan Changsha410004 China School of Electric and Electronic Engineering North China Electric Power University Beijing102206 China

ISBN: (纸本)9781538680971

Given the self-similarity characteristic of the communication traffic-flow in the current information gathering service traffic in power utilization network, a self-similarity modeling method is proposed to quantify the feature analysis of the communication flow for the power information gathering service. Firstly, the flow's characteristic and related course of the information gathering service traffic is analyzed, and a self-similarity model is built by means of combining the multiple ON/OFF flows. Secondly, the Hurst coefficient of the service simulation traffic is estimated using Variance-Time method to quantify the flow's self-similarity with the estimation results of Hurst coefficient. Finally, it discusses the influence of Hurst coefficient is discussed according to the two factors including the acquisition accuracy and the gathering periodic. Experimental results illustrate that the proposed method is effective to model the self-similarity of the information gathering service for the power utilization in Smart Grid. © 2018 IEEE.

关键词： Electric power utilization

来源：评论

学校读者我要写书评

暂无评论

Three-Phase Unbalanced Treatment Scheme Based on High-Speed Power Line Carrier

引用

Journal of Physics: Conference Series 2020年第1期1449卷

作者： Rui Huang Guang Guo Jianhua Chen Mouhai Liu Zhiguo Liu Minqi Yu State Grid Hunan Electric Power Company Changsha Hunan 410000 China Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha Hunan 410000 China

Most of the low-voltage distribution networks are three-phase four wire systems. Because of the quantity and dispersion of single-phase power users, the three-phase load unbalanced problem exists in a large number of low-voltage stations. With the continuous increase of power consumption level of the majority of power customers, the three-phase load unbalanced has become increasingly prominent in low-voltage station area. In this paper, the mechanism of three-phase unbalance generation and the defects of traditional treatment methods are introduced. On this basis, a three-phase unbalanced treatment scheme for low-pressure station area is proposed. The scheme can test out three-phase imbalance of low-voltage substation area quickly and accurately, and adjust the load phase sequence in real time without power failure through the intelligent commutation switch system, so that three-phase load in the station area lies a comparatively balanced condition. The scheme can cut down the loss of transformer and line caused through unbalanced three-phase load e in nicely. And it can restrain single-phase overcurrent, and solve the problem of terminal low voltage treatment.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Study on Line Loss Status Classification Based on Decision Tree

引用

IOP Conference Series: Earth and Environmental Science 2020年第1期585卷

作者： Tan Haibo Luo Bingxiang Liu Mouhai Guo Guang Xie Xiong State Grid Hunan Electric Power Limited Company Changsha Hunan 410004 China Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha Hunan 410116 China

Line loss rate is the ratio of power loss to power supply in a certain period of time, and it is an important index to assess the technical economy of power grid. In recent years, with the increasing scale of power grid construction and the aging of power lines, the traditional monitoring methods with simple logic judgment can not meet the accurate judgment status of line loss, so it is urgent to effectively improve the lean management level of transmission and transformation line loss abnormality. In order to realize the automatic classification of line loss anomalies machine learning algorithm is proposed, the paper takes 1500 transmission line loss data as training samples, builds a line loss anomaly classification model based on decision tree, and realizes the accurate classification of line loss anomaly causes. Meanwhile, the paper uses KNN, support vector machine and decision tree algorithm to identify the anomaly for comparing the accuracy of different machine learning algorithms, and uses MATLAB software to verify the algorithm. The experimental results show that the comprehensive the recognition accuracy of decision tree for line loss anomaly is the highest, reaching 88.9%, 60% for support vector machine and 82% for KNN. This is of great significance to the realization of lean line loss management and has a high engineering value.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Research on Impact Load measurement Method and Algorithm

Research on Impact Load Measurement Method and Algorithm

引用

Sustainable Power and Energy Conference (iSPEC)

作者： Dezhi Xiong He Wen Shidong Chen Xiaoping Zheng Maotao Yang Shuai Yang Rui Huang Yuping Su Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology State Grid Hunan Electric Power Limited Company Power Supply Service Center(Metrology Center) Changsha China College of Electrical and Information Engineering Hunan University Changsha China Weisheng Group Co. Ltd. Changsha Changsha China

ISBN: (纸本)9781728149318

关键词： impact load load model error sampling electric energy meter impact loads Load modeling algorithms Sampling Error measure

来源：评论

学校读者我要写书评

暂无评论

Design of power tester for HPLC power line carrier communication module

引用

Journal of Physics: Conference Series 2020年第1期1449卷

作者： Minqi Yu Yun Tang Rui Huang Mouhai Liu Maotao Yang State Grid Hunan Electric Power Limited Company Power Supply Service Center(Metrology Center) Changsha Hunan 410000 China Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology Changsha Hunan 410000 China

The current equipment used to test the power consumption of power line carrier communication modules not only has low dynamic power consumption, but also fails to meet the accuracy requirements for AC power tests. Based on a careful analysis of the key technologies of the dynamic power test of the communication module, this paper designs a power tester. This paper introduces the working principle of the power tester, discusses the corresponding circuit design scheme from two aspects of DC power consumption and AC power consumption, and analyzes the calculation methods of the two in detail. Finally, the test results of each test system are compared and analyzed. The power tester can achieve higher accuracy data testing.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：