OAR 860-082-0070
Metering and Monitoring
(l)
The public utility must install, maintain, test, repair, operate, and replace any metering and data acquisition equipment necessary under the terms of the public utility’s interconnection agreement, power purchase agreement, or power service agreement with an applicant or interconnection customer. The applicant or interconnection customer is responsible for all reasonable costs associated with the metering and data acquisition equipment. The public utility and the applicant or interconnection customer must have unrestricted access to such equipment as necessary to conduct routine business or respond to an emergency.(2)
Except as provided in subsection 3(b), a public utility may not require an applicant or interconnection customer with a small generator facility with a nameplate capacity of less than three megawatts to provide or pay for the data acquisition or telemetry equipment necessary to allow the public utility to remotely monitor the small generator facility’s electric output.(3)
At its discretion, a public utility may require an applicant or interconnection customer to pay for the purchase, installation, operation, and maintenance of the data acquisition or telemetry equipment necessary to allow the public utility to remotely monitor the small generator facility’s electric output if:(a)
The small generator facility has a nameplate capacity greater than or equal to 3 megawatts; or(b)
The small generator facility meets the criteria in OAR 860-082-0055 (Tier 3 Interconnection Review)(1) for Tier 3 interconnection review and the aggregated nameplate generation on the circuit exceeds 50 percent of the line section annual peak load.(4)
A public utility and an applicant or interconnection customer may agree to waive or modify the telemetry requirements in this rule.(5)
Telemetry Requirements.(a)
The communication must take place via a private network link using a frame relay, fractional T-1 line, or other suitable device. Dedicated remote terminal units from the interconnected small generator facility to a public utility’s substation and energy management system are not required.(b)
A single communication circuit from the small generator facility to the public utility is sufficient.(c)
Communications protocol must be DNP 3.0 or another reasonable standard used by the public utility.(d)
The small generator facility must be capable of sending telemetric monitoring data to the public utility at a minimum rate of every two seconds from the output of the small generator facility’s telemetry equipment to the public utility’s energy management system.(e)
A small generator facility must provide the following minimum data to the public utility:(A)
Net real power flowing out or into the small generator facility (analog);(B)
Net reactive power flowing out or into the small generator facility (analog);(C)
Bus bar voltage at the point of common coupling (analog);(D)
Data processing gateway heartbeat (used to certify the telemetric signal quality); and(E)
On-line or off-line status (digital).(f)
If an applicant or interconnection customer operates the equipment associated with the high voltage switchyard interconnecting the small generator facility to the transmission or distribution system and is required to provide monitoring and telemetry, then the interconnection customer must provide the following data to the public utility in addition to the data in subsection (e):(A)
Switchyard line and transformer megawatt and mega volt ampere reactive values;(B)
Switchyard bus voltage; and(C)
Switching device status.
Source:
Rule 860-082-0070 — Metering and Monitoring, https://secure.sos.state.or.us/oard/view.action?ruleNumber=860-082-0070.