Improving the Voltage Quality and Power Transfer Capability of Transmission System Using FACTS Controller

Abstract

One of the main challenges of the future in the utility sector is constructing the new transmission line corridor. This is due to the fact that land compensation cost associated with the expansion of a new transmission line corridor becomes very expensive and also power transmission efficency is very low. In addition to that, the high carbon emission, which is the major challenge of the world right now, related to the additional conventional energy-based power generation to meet dramatically increased electricity demand and the volatility nature of the existing transmission networks are some of the main drivers to implement FACTS controller in transmission network for flexible, reliable, efficient and stable power transmission. This study accounts modeling of static VAR compensator (SVC), static synchronous compensator (STATCOM), unified power flow controller (UPFC) in a 5-bus transmission system to enhance transmission efficency and the quality of power supplied to the costomer. FACTS devices for improving the transmission line capacity and voltage profile of the power system. The three FACTS controllers are modeled for the standard 5 bus IEEE system based on Newton Raphson algorithm using NEPLAN simulation software in order to investigate their impacts on transmission line capacity and voltage profile improvement. Based on the simulation result, the voltage profile as well as the capacity of the IEEE 5 bus system is improved well by using each of the FACTS controller. From the simulation result we can conclude that the STATCOM and SVC are very efficent in voltge profile improvement whereas the UPFC is well performed for the power transmission capability of the transmission network.

Kapasitor Shunt Sebagai Korektor Tegangan Bus di Gardu Induk

“…Kinerja UPFC berdasarkan penelitian [11] [12] ideal dalam mengendalikan aliran daya dan tegangan bus. Pada penelitian [13] [14] [15] diketahui STATCOM efisien untuk peningkatan profil tegangan jaringan transmisi. Ketika kapasitor seri diaplikasikan di sistem tenaga, kapasitas transfer daya meningkat 37 kali begitu juga stabilitas tegangan [16].…”

Intelligent identification of segmental line losses in low-voltage networks under graphical consistency line variation relationship analysis

“…After completing the processing of the original power data set, the graph consistency line variation relationship analysis model can be constructed, for which three parameters are selected and the optimal parameter values are set, which are the dimensionality reduction, the similarity matrix function and the number of clusters of proximity relationship, the specific parameter meanings and the corresponding optimal parameters are shown in Table 1 [4][5][6][7]. Considering that the operating loads of the line areas differ at different analysis window scales, in order to keep such differences to a minimum, this paper chooses day as the minimum time unit, and establishes the line variation topology on this basis to construct a graphical consistency line variation relationship model [8].…”

A Topology Analysis-Based MMC-HVDC Grid Transmission Capacity Calculation Method

“…In the calculation of each line, it is necessary to subtract the capacity occupation of the sending end grids and receiving end grids of previous sections. For the "Z" mode, the transmission capacity can be calculated by (11):…”

“…P max = P max11 + P max21 + P max22 P max11 = min(P sen1 , P rec1 , P l 11 ) P max21 = min(P sen2 , P rec1 − P max11 , P l 21 ) P max22 = min(P sen2 − P max21 , P rec2 , P l 22 ) (11) The footmark represents the number of the grid and line. Similarly, for "X" mode, the transmission capacity can be calculated by (12):…”

“…For AC grids, the transmission capacity is usually used to describe a transmission section, and the transmission capacity is usually determined by the thermal stability limit of transmission lines and the static stability limit of the transmission section [8,9]. Many studies have investigated how to increase the transmission capacity of the AC grid [10,11]. For MMC-HVDC grids, previous studies have mainly focused on the safe and stable operation area of a single converter station [12,13].…”