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Utilities Distribution

The high voltage cables in the high voltage substation.The Utilities Distribution shop is responsible for the operation, maintenance and service of all campus high voltage distribution equipment, emergency generators, and natural gas distribution system.

Some of the 13.8 kV feeder breakers that distribute and monitor power to the campus.Stony Brook University is unique in that it has two sources of electric power: the utility grid and an on-site cogeneration (power) plant. The power received from both sources is 69,000 volts, stepped down to 13,800 volts, then distributed throughout the campus through approximately 25 miles of underground cables. The cables snake through 190 manholes scattered across the campus to bring power to 166 transformers located in switchgear rooms in almost every Campus building. This includes the Hospital as well as specialty tenants such as the DEC.

The cogeneration plant relay protection panel to ensure a safe electrical system.The 69kV and 13.8 kV electric distribution systems have built-in redundancy to enable maintenance and repair of portions of the system without interrupting power. It is the job of the utilities distribution staff to monitor, plan and execute the maintenance and repair of the high voltage system. Some of these maintenance duties include:

  • Monitoring the electronic metering connected to the network for abnormalities and alarms;
  • Maintaining the campus voltage at proper levels. (Voltage varies due to electric load, generation, and utility voltage);
  • Scheduling the operation, maintenance, refueling and testing of approximately 58 West Campus emergency generators. The generators range in size from 30 to 1500Kw;
  • Conducting periodic inspections of all of the transformers, switchgear, and manholes and conducting or arranging for periodic maintenance as required;
  • Scheduling, adjusting, isolating and switching of power flows on campus to enable equipment maintenance to be performed safely (on de-energized equipment);
  • Scheduling and overseeing major repairs, calibrations, and testing conducted by specialty firms for electric and natural gas systems;
  • Review and evaluate planned additions for serviceability and compatibility with the existing power system(s);
  • Recommend upgrades and improvements that will enhance the reliability of the power systems;

The majority of the Utilities Distribution shop services are performed between the hours of 07:00AM and 03:30PM, Monday through Friday. The Utilities Distribution shop provides on-call responses to all campus power outages 24 hours a day, 7 days a week.


Created by Application Support for Administration
Campus Operations and Maintenance @ Stony Brook University