Quantitative Analysis of the Fluctuation Reasons of Grid Line Loss Rate

2014 ◽  
Vol 672-674 ◽  
pp. 1060-1065
Author(s):  
Yu Ze Zhang ◽  
Wen Ying Liu ◽  
Wei Zhou Wang ◽  
Jing Jing Zheng
Keyword(s):  
Power Supply ◽  
Loss Rate ◽  
Loss Analysis ◽  
Factors Influencing ◽  
Power Supply Enterprise ◽  
Fluctuation Range ◽  
On Line ◽  
Line Loss ◽  
Major Factors ◽  
Electric Quantity

While analyzing the line loss, power supply enterprise always encounters circumstances in which the line loss rate swings heavily, especially during the months when there exists season alternate or long vacations, the fluctuation range of the line loss rate grows larger, and it will be apparently on the high side or on the low side. This text figured out the major factors influencing the fluctuation of the line loss rate, quantitatively analyzing three factors’ effects on line loss rate, which respectively are non-correspondence electric quantity for supplying and selling, the dedicated line which large consumer load transfers and the change of electric quantity which is nondestructive for sale, thus facilitating the grid enterprises dynamically analyzing the line loss in time, providing authentic line loss data for electric power departments at all levels, electricity board, power supply station, improving the accuracy of line loss analysis, dismissing the human factors during the fluctuation of line loss.

Research and Application of the Whole Process of Line Loss Management Platform

2013 ◽  
Vol 448-453 ◽  
pp. 1382-1387
Author(s):  
Qian Wang ◽  
Yu Niu ◽  
Lu Meng ◽  
Jiang Chang
Keyword(s):  
Management System ◽  
Theoretical Computation ◽  
Loss Analysis ◽  
Management Platform ◽  
Whole Process ◽  
Power Company ◽  
On Line ◽  
Management Experience ◽  
Electric Power Company ◽  
Line Loss

Responding to the state's call of "energy-saving" and enhancing the level of line loss management, Henan Electric Power Company developed Henan line loss management system, after several years of exploration and Loss Management experience accumulation. The loss management system can realize power loss measurement, on-line theoretical computation of line loss, line loss analysis, line loss policy and so on. These functions can support the whole process of Henan line loss management.

Henan Power Line Loss Management System Practice and Application

2014 ◽  
Vol 1030-1032 ◽  
pp. 2573-2577 ◽  
Author(s):  
Yu Niu ◽  
Rui Qin Si ◽  
Zhe Li ◽  
Jian Wei Ma
Keyword(s):  
Management System ◽  
Management Decision ◽  
Project Management System ◽  
Loss Analysis ◽  
Power Company ◽  
The Status ◽  
On Line ◽  
Theoretical Line ◽  
Grid Construction ◽  
Line Loss

As a positive response to the national energy-saving emission reduction policies to promote, line loss management company, the Henan province electric power company (hereinafter referred to as "the company") launched the Henan power grid construction project management system. This project has realized the on line calculation of theoretical line loss, line loss "four" management, decision support, to reduce the loss of line loss analysis of eight functions, and continue to demonstrate in the running process, formed the application mode of Henan power network line loss management system. This paper mainly Introduction Company in recent years the framework, work and the status line loss management system function and practical application etc..

scholarly journals Research and Application of Transformer-User Identification Technology Based On Fault Diagnosis of Electrical Information Acquisition Equipment

2019 ◽  
Vol 136 ◽  
pp. 04054
Author(s):  
Muxin Zhang ◽  
Liyan Kang ◽  
Bing Cao ◽  
Ying Shang ◽  
Qiutong Wu ◽  
...  
Keyword(s):  
Fault Diagnosis ◽  
Power Supply ◽  
Information Acquisition ◽  
Loss Rate ◽  
Low Voltage ◽  
Factors Affecting ◽  
Professional Management ◽  
Marketing Professional ◽  
Power Line Carrier ◽  
Line Loss

The line loss rate of power supply enterprises is an important economic and technical index, which directly reflects the lean level of marketing professional management of power supply enterprises. At present, the confusion of transformer-user archives in transformer area is still widespread, which is a key issue in line loss management in power supply enterprises. As the downlink communication channel, low-voltage power line carrier can realize cross-station reading, which brings great difficulties to the identification of transformer-user relation. Because the data of calculating the line loss rate of the transformer area depends on the electrical information acquisition system, the running state of the electrical information acquisition equipment is also one of the important factors affecting the line loss rate of the transformer area. This paper will focus on the fault diagnosis technology of electrical information acquisition equipment, and use it to carry out the identification of transformer-user transformers.

scholarly journals Modeling and Algorithm Research on Identification of Wrong Wiring Power Supply Region based on Classification Analysis

2021 ◽  
Vol 2068 (1) ◽  
pp. 012036
Author(s):  
Zongpeng Li ◽  
Liang Yu ◽  
Jian Liu ◽  
Liangli Su ◽  
Huang Tan ◽  
...  
Keyword(s):  
Power Supply ◽  
Loss Rate ◽  
Negative Power ◽  
Power Company ◽  
Before And After ◽  
Rate Maximum ◽  
Rate Minimum ◽  
Line Loss ◽  
Positive Line ◽  
Identification Model

Abstract The wrong wiring of the power supply region directly affects the accuracy of the metering data. This paper based on the existing data of the power supply regions, defined four indicators which include minimum negative line loss rate, maximum positive line loss rate, minimum power factor and maximum number of negative power values. Then by using the four indicators before and after the wrong wiring rectification of the historical wrong wiring regions and the decision tree algorithm, the wrong wiring regions identification model was built. The identification model was used to identify the wrong wiring regions in all regions of the power company, and the regions identified as wrong wiring by the model were inspected on-site. The inspection result shows that the precision of the model is satisfactory, which can effectively improve the inspection and rectification efficiency of the wrong wiring regions.

Research on SVM Line Loss Rate Prediction Based on Heuristic Algorithm

2013 ◽  
Vol 291-294 ◽  
pp. 2164-2168 ◽  
Author(s):  
Li Tian ◽  
Qiang Qiang Wang ◽  
An Zhao Cao
Keyword(s):  
Support Vector Machine ◽  
Heuristic Algorithm ◽  
Support Vector Machine Model ◽  
Loss Rate ◽  
Heuristic Algorithms ◽  
Support Vector ◽  
Machine Model ◽  
Rate Prediction ◽  
Line Loss

With the characteristic of line loss volatility, a research of line loss rate prediction was imperatively carried out. Considering the optimization ability of heuristic algorithm and the regression ability of support vector machine, a heuristic algorithm-support vector machine model is constructed. Case study shows that, compared with other heuristic algorithms’, the search efficiency and speed of genetic algorithm are good, and the prediction model is with high accuracy.

A comparison of particle breakdown during chewing by guanacos (Lama guanicoe) and sheep

1998 ◽  
Vol 1998 ◽  
pp. 136-136
Author(s):  
M.D. Fraser ◽  
D.H. Baker
Keyword(s):  
Particle Size ◽  
Retention Time ◽  
Microbial Fermentation ◽  
Digestive Efficiency ◽  
Particle Size Reduction ◽  
Lama Guanicoe ◽  
Factors Influencing ◽  
Stomach Motility ◽  
Pass Through ◽  
Major Factors

To date, attempts to account for reported differences in digestive efficiency of camelids and ruminants have focused on factors such as stomach motility and the retention time of feed particles. The physical breakdown of forage into particles small enough to pass through the reticulo-omasal orifice is one of the major factors influencing the rate of passage of digesta from the reticulo-rumen in ruminants. Two of the main processes involved in particle size reduction are chewing (pre- and post-regurgitation) and microbial fermentation. While the characteristic vertical and horizontal jaw movement which occurs during mastication in the camelid is believed to allow for efficient use of the premolars and molars in cutting and grinding fibrous feeds, there have been no comparative studies to verify this, and to assess the contribution of chewing to differences in digestibility coefficients. The aim of this experiment was to directly compare particle breakdown during chewing by guanacos and sheep.

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