scholarly journals Research on the Monitoring System Design for the Line Loss of the Distribution Line Based on Dynamic Three-phase Unbalance Degree

2019 ◽  
Vol 155 ◽  
pp. 815-821
Author(s):  
Wei Meifang ◽  
Long Min ◽  
Li Junyi ◽  
Pang Wenlong ◽  
Wu Xixiu
Keyword(s):  
System Design ◽  
Monitoring System ◽  
Three Phase ◽  
Distribution Line ◽  
Line Loss

scholarly journals Research on the Device Design for Calculation Distribution Line Loss Based on Dynamic Three-phase Unbalance Degree

2019 ◽  
Vol 118 ◽  
pp. 02071
Author(s):  
Meifang Wei ◽  
Jing Yang ◽  
Xuhua Zeng ◽  
Haiyan Wu ◽  
Di Huang
Keyword(s):  
Real Time ◽  
Distribution Network ◽  
Wireless Transmission ◽  
Loss Calculation ◽  
Sequence Identification ◽  
Phase Sequence ◽  
Three Phase ◽  
Time Calculation ◽  
Distribution Line ◽  
Line Loss

For the power distribution network line loss calculation, there are some problems, such as backward method, long calculation period, large workload and poor real-time performance. To this end, this paper proposes a real-time calculation method for distribution line loss based on dynamic three-phase unbalance, and a hardware device system with unbalanced phase sequence identification function, three-phase unbalance detection function and line loss real-time calculation function has been developed. The system uses a master-slave design based on the principle of wireless transmission. The slave collects standard three-phase current signals and transmits them to the host through wireless transmission. The host is installed on the low voltage side of the transformer in the transformer region, and the current signal of the transformer region is collected in real time. Unbalanced phase sequence identification, unbalance calculation, and line loss calculation based on dynamic unbalance are performed by comparing the current signals collected by the master and the slave. The above algorithm implementation process can be displayed online in real time. In addition to the core data processing and waveform display functions, the device also includes a battery power supply and management system, a signal storage and transmission system, and temperature measurement, and overcurrent and overvoltage protection. The test results of the device show that the device has the characteristics of convenient carrying, fast detection of three-phase unbalance, and accurate calculation of line loss. The device can monitor the running status of the distribution network transformer region in real time.

Improved Equivalent Resistance Method for Low-Voltage Distribution Line Loss Calculation

2014 ◽  
Vol 1008-1009 ◽  
pp. 417-420 ◽  
Author(s):  
Xiao Hui Liu ◽  
Lin Ma ◽  
Yun Song Shi ◽  
Yu Jiang Wang ◽  
Jun Hua Li
Keyword(s):  
Low Voltage ◽  
Equivalent Resistance ◽  
Voltage Distribution ◽  
Phase Current ◽  
Resistance Method ◽  
Loss Calculation ◽  
Three Phase ◽  
Distribution Line ◽  
Line Loss

Aiming at the insufficiency of Equivalent Resistance Method for a low-voltage distribution line loss calculation, this article has been improved. Then this paper presents the method of using three-phase quantity of electricity to calculate three-phase current, it can calculate the three-phase unbalanced line loss without current date and facilitate the application of Three-phase Unbalanced Method. It develops our own program based on Visio to calculate low-voltage distribution line loss. The results showed: Improved Equivalent Resistance Method improves the accuracy; in the three-phase unbalanced the method of using three-phase quantity of electricity to calculate three-phase current is more easily modified and more practical value.

OPTIMAL ARCHITECTURE AND EQUIPMENT OF THE DISTRIBUTION LINE MONITORING SYSTEM

2018 ◽  
Vol 2018 (50) ◽  
pp. 16-22
Author(s):  
I. Blinov ◽  
◽  
Ye. Parus ◽  
O. Rybina ◽  
S. Tankevych ◽  
...  
Keyword(s):  
Monitoring System ◽  
Distribution Line

Design and Implementation of Wireless Voltage Monitoring System Based on Zigbee

2017 ◽  
Vol 12 (3) ◽  
pp. 83-96 ◽  
Author(s):  
Luo Xiaohui
Keyword(s):  
Monitoring System ◽  
Single Phase ◽  
Low Cost ◽  
Moving Average ◽  
Voltage Sensor ◽  
Wireless Transmission ◽  
Phase Voltage ◽  
Medium Voltage ◽  
Wireless Monitoring ◽  
Three Phase

This paper proposed a low cost wireless monitoring system based on ZigBee wireless transmission, and designed a new floating voltage sensor which is suitable for the monitoring of medium voltage and high voltage(MV/HV) public equipment. The system used TI-CC2530 as the controller, proposed a new moving average voltage sensing(MAVS) algorithm by reasonable assumptions, and adopted algorithms to perform the theoretical analysis for the single phase and three-phase voltage. At last, the author carried out a practical experiment on the wireless floating voltage sensor under the voltage up to 30kV, the experimental results showed that the proposed low cost wireless sensor can achieve a good voltage monitoring function, and the error is less than 3%.

Metal Mine Monitoring System Design

2021 ◽  
Author(s):  
Wei Li ◽  
Shihao Zhang ◽  
Lei Zhang ◽  
Hongbo Kang
Keyword(s):  
System Design ◽  
Monitoring System ◽  
Metal Mine

Review of communication methods and system design structure for solar monitoring system

2018 ◽  
Author(s):  
S. S. S. Ranjit ◽  
A. F. M. F. Aqil ◽  
S. S. S. Baljit ◽  
Y. C. Wong
Keyword(s):  
System Design ◽  
Monitoring System ◽  
Design Structure ◽  
Communication Methods
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