Practice Test Geeks(BGE) Baltimore Gas and Electric Practice Test
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Grid Reliability & Infrastructure Flashcards

7 cards from real BGE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Grid Reliability & Infrastructure flashcards as text

  1. What is the role of a phasor measurement unit (PMU) in modern grid monitoring?

    Answer: It provides time-synchronized voltage and current phasor data at high sampling rates

    PMUs use GPS time-stamping to capture synchronized phasor (magnitude and angle) measurements across the grid at rates up to 60 samples per second, enabling wide-area situational awareness.

  2. Which type of relay is commonly used to protect a transmission line by measuring the impedance to a fault?

    Answer: Distance (impedance) relay

    Distance relays measure the voltage-to-current ratio (impedance) at the relay location; a low impedance value indicates a fault within the protected zone.

  3. BGE uses 'smart grid' technology including Advanced Metering Infrastructure (AMI). What benefit does AMI provide to grid operations?

    Answer: Enables two-way communication for remote meter reads, outage detection, and demand response

    AMI meters communicate two-way over a network, allowing BGE to read meters remotely, detect outages automatically, and engage customers in demand response programs.

  4. What is the maximum allowable voltage deviation at a customer's service point under ANSI C84.1 standard?

    Answer: ±5% of nominal (Range A)

    ANSI C84.1 Range A specifies that service voltage should be within ±5% of nominal voltage under normal operating conditions.

  5. A 'hot-line clamp' is used in utility field work to perform which task?

    Answer: Create an energized electrical connection to a conductor without de-energizing it

    Hot-line clamps (also called hot taps) allow lineworkers to make live electrical connections to energized conductors using hot-stick tools, avoiding an outage.

  6. What is the primary hazard associated with SF6 gas used in high-voltage switchgear?

    Answer: It is an extremely potent greenhouse gas with a 23,900-year global warming potential

    SF6 is a potent greenhouse gas—approximately 23,900 times more warming than CO2 over 100 years—making leaks and improper handling a significant environmental concern.

  7. Which BGE program allows large commercial and industrial customers to voluntarily reduce load during peak grid stress events in exchange for bill credits?

    Answer: Demand Response (Peak RewardsSM)

    BGE's Peak Rewards and similar demand response programs compensate large customers for curtailing load when PJM or BGE declares a grid emergency or capacity event.