Results 231 to 240 of about 7,634 (271)

The operation experience of KEPCO UPFC

2005 International Conference on Electrical Machines and Systems, 2005
KEPCO (Korea Electric Power Corporation) has installed UPFC (unified power flow controller), voltage-source FACTS (flexible AC transmission system) device at Kangjin substation, Kangjin-gun, Jeonnam province in May 2003. Kangjin UPFC is composed of 40 MVA shunt inverter and 40 MVA series inverter, and has three operation modes, STATCOM (static ...
S.Y. Kim, J.S. Yoon, B.H. Chang, D.H. Baek   +3 more
openaire   +1 more source

UPFC control employing gradient descent search

Proceedings of the 37th Annual North American Power Symposium, 2005., 2005
Increasing demand coupled with limitations on new construction indicate that existing power transmission must be better controlled in order to continue reliable operation. Recent advances in FACTS devices provide a mechanism to better control power flow on the transmission network.
W. Siever, R.P. Kalyani, M.L. Crow, D.R. Tauritz   +3 more
openaire   +1 more source

Power quality improvement by using UPFC

2017 2nd International Conference for Convergence in Technology (I2CT), 2017
Power system harmonics is one of the major problems in power system operation. If the harmonics can increases and decreases transmission line capacity which may cause interruption in energy supply. Therefore, flexible AC transmission system (FACTs) devices are employed to reduce this harmonics.
Hitesh B. Hatnapure, V. K. Chandrakar
openaire   +1 more source

A UPFC based on matrix converter

2010 1st Power Electronic & Drive Systems & Technologies Conference (PEDSTC), 2010
The main concept of unified power flow controller (UPFC) is based on back to back connection of two inverters with a common capacitor dc link. This capacitor brings about several disadvantages such as affecting the reliability of UPFC. This paper proposes a new topology for UPFC based on matrix converter.
A. R. Marami Iranaq, M. Tarafdar Haque, E. Babaei   +2 more
openaire   +1 more source

Dynamic decoupled compensator for UPFC control

Proceedings. International Conference on Power System Technology, 2003
It has been reported that there is a strong dynamic interaction between the active and reactive power flow through a transmission line when they are controlled by a unified power flow controller. This paper proposes a dynamic decoupled (DD) compensator, used in conjunction with a proportional-integral (PI) controller, to eliminate the dynamic ...
C.M. Yam, M.H. Haque
openaire   +1 more source

Optimal Power Flow Study Using UPFC

2018 International Conference on Recent Innovations in Electrical, Electronics & Communication Engineering (ICRIEECE), 2018
The Controlled Reactive Power Gives the Desired Optimal flow of Power in the line. The FACTS devices effectively control the flow of Power in the lines. Improvement of voltage profile and minimization of losses are studied here with Optimal and non- Optimal Power Flow.
S.C Swain, Ramakanta Jena, Shaswat Chirantan, P. C. Panda   +3 more
openaire   +1 more source

Component level cascade control of UPFC

2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134), 2002
A complete three-phase UPFC model has been developed using EMTDC. A method to regulate the UPFC to improve the dynamic performance of the power system is proposed in the paper. It consists of three different control levels that have been implemented by means of a well-established digital simulation software package PSCAD/EMTDC.
Y.L. Kang, G.B. Shrestha, T.T. Lie
openaire   +1 more source

Interactions analysis of UPFC multifunction controller

2009 IEEE Bucharest PowerTech, 2009
Internal interactions between control paths are a pivotal issue in multifunction FACTS controller design. One of the main stages of controller synthesis is an appropriate interaction analysis. This paper presents an analysis of interactions of Unified Power Flow Controller (UPFC).
S. Robak, D.D. Rasolomampionona
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การประเมินผลกระทบของ UPFC ที่มีต่อความเชื่อถือได้ของระบบไฟฟ้ากำลัง

Unified Power Flow Controller (UPFC) เป็นอุปกรณ์ทางอิเล็กทรอนิกส์กำลังประเภทหนึ่งที่สามารถควบคุมการไหลของกำลังไฟฟ้าจริง ควบคุมการไหลของกำลังไฟฟ้ารีแอกทีฟ และควบคุมระดับแรงดันที่บัสได้ เนื่องจากคุณสมบัติที่ดีในการควบคุมดังกล่าวข้างต้น จึงมีแนวคิดที่จะนำอุปกรณ์ UPFC มาติดตั้งในระบบไฟฟ้าเพื่อปรับปรุงสมรรถนะของระบบไฟฟ้ากำลัง อย่างไรก็ตามผลการปรับปรุงคุณสมบั
openaire   +1 more source

Dynamic Modeling and Simulation of UPFC

2011
Unified Power Flow Controller (UPFC) combines function of voltage control, power flow control and oscillation damping. Before installation to a system, analysis for interactions between UPFC and system are needed. Building up steady, transient and dynamic models by present software to realize accurate simulations of UPFC under different system ...
Jieying Song, Fei Zhou, Hailong Bao, Jun Liu   +3 more
openaire   +1 more source