Title :
Research for dynamic increasing transmission capacity
Author :
Ren, Lijia ; Xiuchen, Jiang ; Gehao, Sheng
Author_Institution :
Dept. of Electr. Eng., Shanghai Jiaotong Univ., Shanghai
Abstract :
The Dynamic Line Rating (DLR) system can increase transmission capacity of overhead line dynamically. The system is composed of sampling terminals installed on dead-end configuration of a line and one control instrument equipped in dispatch center. The data between the sampling terminals and the control instrument is transmitted through GPRS/GSM. Then three major limitations governing the line rating limits were analyzed and stated. This paper analyzed the force balance for overhead line concerned wind speeds and wind directionin a deflection plane. On this basis, a mechanics analysis model of linepsilas tension and sags was established. Analyzed the advantages and drawbacks of some mathematic model used to calculate transmission capacity. In order that the DLR system received the optimum dynamic capacity curve, combined the WM and TS model. Finally, the necessity and significance to use DLR in power grid are presented.
Keywords :
power grids; power overhead lines; GPRS-GSM; TS model; WM model; control instrument; dynamic line rating system; mechanics analysis model; power grid; power overhead line; sampling terminal; tension-sag model; transmission capacity; weather-base model; wind direction; wind speed; Control systems; GSM; Ground penetrating radar; Instruments; Mathematical model; Mathematics; Power system dynamics; Power system modeling; Sampling methods; Wind speed; Conductor Sag; Conductor tension; Dynamic Line Rating (DLR); Transmission Capacity; overhead Line;
Conference_Titel :
Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-1621-9
Electronic_ISBN :
978-1-4244-1622-6
DOI :
10.1109/CMD.2008.4580386
