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ElectricalPower Generation
PrevNext

Power system monitoring is usually done by

A

ETAP

B

SCADA

C

Matlab

D

PSPM

Correct Answer

тЪЩя╕П TE тАв Technical Concept & PrincipleElectricalPower Generation
Option B

SCADA

Quick Summary:

SCADA (Supervisory Control and Data Acquisition) is the standard industrial control system architecture used for real-time monitoring and control of large-scale power systems. It collects telemetry data from Remote Terminal Units (RTUs) or Intelligent Electronic Devices (IEDs) located at substations to provide centralized visibility to operators.

тЪЩя╕ПTETechnical SolutionConcept & Principle
ЁЯТб Explanation

SCADA (Supervisory Control and Data Acquisition) is the standard industrial control system architecture used for real-time monitoring and control of large-scale power systems. It collects telemetry data from Remote Terminal Units (RTUs) or Intelligent Electronic Devices (IEDs) located at substations to provide centralized visibility to operators.

ЁЯФв Key Formulas

P=3VLILcosтБб╧ХP = \sqrt{3} V_L I_L \cos \phiP=3тАЛVLтАЛILтАЛcos╧Х тАФ represents the real power calculated based on monitored SCADA parameters

Q=3VLILsinтБб╧ХQ = \sqrt{3} V_L I_L \sin \phiQ=3тАЛVLтАЛILтАЛsin╧Х тАФ represents the reactive power monitored via SCADA telemetry

тЪЩя╕П Working Principle

SCADA operates by polling field devices at remote substations to acquire data such as voltage, current, and switch status. This information is transmitted over communication channels to a central Master Terminal Unit (MTU), where it is processed, archived, and displayed on a Human-Machine Interface (HMI) for real-time decision-making.

ЁЯУМ Key Points
  • тЦ╕

    SCADA enables remote monitoring of substations, reducing the need for manual site visits.

  • тЦ╕

    It supports critical functions like Automatic Generation Control (AGC) and State Estimation.

  • тЦ╕

    Modern SCADA systems utilize protocols like DNP3, IEC 60870-5-101/104, and IEC 61850.

тЬЕ Advantages
  • тЦ╕

    Improved operational efficiency and response time during outages.

  • тЦ╕

    Enhanced security through real-time situational awareness.

  • тЦ╕

    Comprehensive data logging for post-disturbance analysis.

тЭМ Disadvantages / Limitations
  • тЦ╕

    Vulnerability to cyber-attacks if not properly secured.

  • тЦ╕

    High initial investment for hardware and communication infrastructure.

ЁЯЫая╕П Applications / Uses
  • тЦ╕

    Grid frequency management and load balancing.

  • тЦ╕

    Remote switching of circuit breakers and isolators.

  • тЦ╕

    Monitoring thermal limits and power quality parameters.

ЁЯУД Additional Information
  • тЦ╕

    ETAP is a specialized power system simulation software used for offline design, analysis, and modeling rather than real-time monitoring.

  • тЦ╕

    Matlab is a programming environment used primarily for mathematical modeling and simulation.

  • тЦ╕

    PSPM is not a standard industry term for power system monitoring systems.

ЁЯУК Diagram / Illustration
SCADA Monitoring ArchitectureFieldSensors/IEDMasterControl/HMIData LinkCentralized Real-Time Monitoring
тЬЕ

B is correct тАФ SCADA is the industry-standard framework designed specifically for real-time supervisory control and monitoring of electrical power systems.

Core Concepts Used
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Supervisory Control and Data Acquisition Telemetry and Data Acquisition Power System Automation
ЁЯТб EXAM TIP

In power systems, always distinguish between 'simulation' tools (like ETAP or Matlab, used for design) and 'operation' tools (like SCADA or EMS, used for live grid management).

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