Static Synchronous Compensator (STATCOM) Studies

​ What is a Static Synchronous Compensator (STATCOM)? A STATCOM is a shunt-connected static synchronous generator designed to provide capacitive or inductive reactive power compensation. It uses voltage-sourced converter (VSC) technology for precise control of output current, independent of system voltage. Its primary functions include reactive power support, voltage regulation, and improving transient and dynamic stability. ​ Importance of Static Synchronous Compensator (STATCOM) STATCOM systems are critical for:

Reactive Power Modes: Operating in fixed reactive power or voltage control modes.

Voltage Regulation: Controlling the fundamental positive sequence voltage in steady-state and dynamic conditions.

Phase Voltage Control: Managing positive and negative sequence components.

Coordinated VAR Control: Optimizing the use of dynamic versus steady-state reactive power sources.

Power Oscillation Damping: Enhancing system stability by damping oscillations (0.2–2.0 Hz).

Response Gain Control: Regulating STATCOM response to prevent excessive overshoot or oscillations.

​ How Do We Perform STATCOM Studies?

Data Collection: Collect system details such as single-line diagrams (SLD), STATCOM specifications, and study-specific data (e.g., dynamics, harmonics, stability, EMT, insulation coordination).

System Modeling: Develop accurate models of the STATCOM and power system using tools like ETAP, PSS®E, or PSCAD/EMTDC.

Simulation Scenarios: Create and simulate scenarios based on client requirements and system needs.

Reporting: Deliver a detailed technical report with analysis, findings, and recommendations.

​ Applicable Standards for STATCOM Studies

IEEE 1052-2018: Guide for Specification of Transmission Static Synchronous Compensator Systems.

IEC 62927: Electrical Testing of Voltage-Sourced Converter (VSC) Valves for STATCOM.