Understanding PZM Voltage Regulator Alerts
Efficient voltage regulation is the linchpin of a reliable
electrical grid. With PZM's cutting-edge SaaS app designed for
electric cooperatives, you can ensure optimal performance and
High / Moderate Regulator Ops Count Alarm:
This alert is because the voltage regulator’s tap changer may
be operating too much. High tap operations will lead to
increased contact resistance and potential failure of the
regulator. Typically, a regulator requires maintenance every
100,000 taps or 10 years of operation. PZM calculates the
average annual tap operations and has a high alarm at 10,000
and a moderate alarm at 8,000 operations per year. Checking
for mis- coordination between regulators, increasing the
bandwidth, and/or extending the time delay between taps reduce
cause excessive operations.
High/Low Drag Hand Alarm:
This alert is because the voltage regulator’s drag hand is
outside an acceptable operating range (PZM’s default is +12
for high alarm and -12 for low alarm). High drag hand
positions indicate low source voltage. Low drag hands indicate
high source voltage. The drag hand alarms should be set to
alarm you in time to make improvements to your system to
maintain +/-95% of rated operating voltage.
Associated Fields: High Drag Hand Alarm, Low Drag Hand
PZM Alert Types
Inspection Alerts instantly tell you what and
where inspections are past due or due within the next 7 days.
Deficiency Alerts tell you instantly what and
where your highest risk deficiencies are.
System Voltage Alerts instantly tell you
where the highest and lowest voltage levels are on your
transmission and distribution system.
Reg Ops Alerts tell you your most active
regulators on the system and enable you to prevent worn
contacts and premature failure of the regulator.
Breaker Ops Alerts identifies which breaker
or recloser is experiencing the most faults on the system, and
the user-defined impact of those faults, based on any
combination of meter counts, load at risk, or revenue at risk.
PZM Alerts are designed to get the most out of your inspection
program. We save hours and hours of grueling analysis and
deliver quality, actionable information that will improve your
utility's electrical system with a click of a button.
PZM Alert Definitions