Simulation system for FACTS connected online to SCADA system

• US 8,249,836 B2
• Filed: 09/07/2007
• Issued: 08/21/2012
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Korea Electric Power Corporation (Government of South Korea)
• Original Assignee: Korea Electric Power Corporation (Government of South Korea)
• Inventors: Chang, Byung-Hoon, Kim, Soo-Yeol, Moon, Seung-Pil, Yoon, Jong-Su, Han, Jeong-Yuel
• Primary Examiner(s): Silver, David
• Assistant Examiner(s): GEBRESILASSIE, KIBROM K
• Application Number:
  US11/851,682
• Publication Number:
  US 20080103737A1
• Time in Patent Office: 1,810 Days
• Field of Search: 703/4, 703/13, 703/14, 703/18, 703/2, 700/1, 700/9, 700/15, 323/205
• US Class Current: 703/2
• CPC Class Codes: G06F 2119/06 Power analysis or power optimisation
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

An online simulation system for a flexible AC transmission system (FACTS) which is capable of analyzing operation control effect of the FACTS in advance through an online data connection with a supervisory control and data acquisition (SCADA) system used for operating an electric power system.

Claims

1. A simulation system for a flexible AC transmission system (FACTS) connected online to a supervisory control and data acquisition (SCADA) system, comprising:

the SCADA system which periodically acquires power system line data; and

a FACTS simulator which receives the power system line data from the SCADA and performs load flow computation of an electric power system, and includes;

a database server for receiving and storing the power system line data from the SCADA system,

a man machine interface (MMI) for inputting a simulation FACTS control set-point,

a load flow computation module for performing the load flow computation of the electric power system on the basis of the power system line data received from the database server and the control set-point received from the MMI, wherein the load flow computation module includes a load flow computation algorithm, the load flow computation algorithm having FACTS load flow computation models for types of FACTS devices, the types of FACTS devices comprising a static synchronous compensator (STATCOM), a static synchronous series compensator (SSSC) and a unified power flow controller (UPFC), and the load flow computation module performs the load flow computation of the electric power system depending upon the FACTS load flow computation models, and

a power system display module for displaying the analyzed result of the load flow computation module,

wherein the database server converts the power system line data from the SCADA system into an input data format of the load flow computation algorithm,

the control set-point is converted into a control input value of the FACTS load flow computation model included in the load flow computation module and the converted control input value is then sent to the load flow computation module, and

the MMI sends the control set-point of a bus voltage, a real and reactive electric power load flow to the load flow computation module if the type of FACTS is the UPFC.

2. The system according to claim 1, wherein the system line data includes vision data, bus voltage data, real power load flow data, reactive power load flow data, and data on operation information of a circuit breaker and a protection relay.

3. The system according to claim 2, wherein the database server is connected online to the SCADA system to receive the power system line data in real time.

4. The system according to claim 3, wherein the database server and the SCADA system are connected online to each other through TCT/IP protocol communication.

5. The system according to claim 1, wherein the power system display module displays voltages and phases of buses and electric power load flow values of electric power transmission lines.