Understanding PZM Protection Device Alerts
Protection Devices are essential components of a substation's
infrastructure, playing a critical role in maintaining the
reliability, safety, and stability of the electrical grid. They
are instrumental in preventing widespread outages, protecting
equipment, and ensuring the safety of both the grid and
Operations High Alarm:
This alert is because there has been an excessive number of
breaker or recloser operations between inspections. PZM
calculates the average number of operations per month based on
a 30-day calculation period. The alarm point can be adjusted
based on the reliability expectations of the feeder (PZM's
default is 5). High operations alert should trigger the need
for a patrol to look for common causes such as sagging spans,
insulators floating or tracking, bird nesting, etc.
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