SOPD SCADA Systems 5

Question 1

What is the function of the SCADA front-end processor (FEP) or communication processor?

Accepted Answer

Handle all communications with RTUs, concentrating field data before passing it to the SCADA server

Answer

The front-end processor manages all RTU communication protocols, handles polling or unsolicited message reception, and passes processed data to the main SCADA server.

Question 2

Under NERC FAC-002, what information from SCADA is critical during a facilities study or interconnection review?

Accepted Answer

Real-time and historical measurements that define current facility ratings and loading

Answer

NERC FAC-002 requires accurate facility ratings information; SCADA measurements provide the evidence of actual loading conditions against established thermal and stability ratings.

Question 3

What is meant by 'SCADA data quality' in the context of power system state estimation?

Accepted Answer

The accuracy, completeness, and timeliness of measurements used to build the system model

Answer

Data quality in state estimation refers to whether measurements are accurate, current, and sufficient in redundancy to allow the estimator to produce a reliable converged solution.

Question 4

Which type of SCADA control is used to automatically maintain a substation bus voltage within defined limits by adjusting a tap changer?

Accepted Answer

Automatic voltage regulation (AVR) via closed-loop control

Answer

Automatic voltage regulation uses closed-loop logic within the SCADA or substation controller to continuously adjust transformer tap positions and keep voltage within acceptable limits.

Question 5

What does the term 'ICCP' (Inter-Control Center Communications Protocol) enable in SCADA operations?

Accepted Answer

Real-time data exchange between different utilities' or reliability coordinators' control centers

Answer

ICCP (IEC 60870-6/TASE.2) is the standard protocol enabling real-time data sharing of system conditions, schedules, and control between interconnected utility and reliability coordinator control centers.

(SOPD) System Operator/Power Dispatching Practice Test

(SOPD) System Operator/Power Dispatching Practice Test

SOPD SCADA Systems 5