Specific Voltage and Reactive Power Coordination Procedures. The Parties will utilize the following procedures to coordinate the use of voltage control equipment to maintain a reliable bulk power transmission system voltage profile on their respective systems. 9.2.1 Under normal conditions, each Party shall coordinate with the owners of the transmission facilities subject to its control, and the Balancing Authority Areas as necessary and feasible to supply its own reactive load and losses at all load levels. 9.2.2 Each Party shall work with its owners of transmission facilities and Balancing Authority Areas and shall determine adequate and reliable voltage schedules under actual and post-contingency conditions. 9.2.3 Each Party shall establish voltage limits at critical locations within its own system and provide this information to the other Party. This information shall include: normal high voltage limits; normal low voltage limits; post-contingency emergency high voltage limits; post-contingency emergency low voltage limits; 9.2.4 Each Party shall remain aware of the voltage limits in the other Party’s area (where the EMS Model includes sufficient detail to permit this) and of outages and potential contingencies that could result in violation of those voltage limits. Each Party shall attempt to avoid exceeding such voltage limits. 9.2.5 The Parties shall clearly communicate the level of voltage support needed during pre- or post-contingency conditions requiring voltage and reactive power coordination. 9.2.6 Each Party shall maintain a list of actions that are available to be taken when voltage support is necessary to respond to anticipated or prevailing system conditions. 9.2.7 At least once each calendar quarter, the Parties will exchange voltage schedules and meet and confer to identify system conditions that could impact the schedules. The Parties shall determine adjustments to the schedules, consistent with reliability. 9.2.8 The Parties shall use voltage control equipment in a cooperative manner to maintain a reliable bulk power transmission system voltage profile on their systems and surrounding systems, as follows: 9.2.8.1 Each Party has operational or functional control of reactive sources within its system, and shall direct adjustments to voltage schedules at appropriate facilities. (a) Each Party generally will adjust its voltage schedules to best utilize its resources for operation. (b) If a Party anticipates voltage or reactive problems, it shall inform the other Party (operations planning with respect to future day and Reliability Coordinator with respect to same day) of the situation, describe the conditions, and request voltage/reactive support under these procedures. As a part of the request, the Party shall identify the specific area where voltage/reactive support is requested, and provide an estimate of the magnitude and time duration of the request as well as the specific voltage and limit. (c) The requesting Party shall arrange a conference call between the affected Balancing Authority Areas/transmission owners and the other Party. The purpose of this call is to ensure that the situation is fully understood and that an effective operating plan to address the situation has been or will be developed. (d) Each Party shall implement or direct voltage schedule changes requested by the other Party, provided that a Party may decline a requested change if the change would result in equipment violations or reduce the effective operation of its facilities. A Party that declines a requested change must inform the requesting Party that the request cannot be granted and state the reason for denial.
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Sources: Joint Operating Agreement
Specific Voltage and Reactive Power Coordination Procedures. The Parties will utilize the following procedures to coordinate the use of voltage control equipment to maintain a reliable bulk power transmission system voltage profile on their respective systems.
9.2.1 11.2.1 Under normal conditions, each Party shall will coordinate with the owners of the transmission facilities subject to its control, and the Balancing Authority Control Areas as necessary and feasible to supply its own reactive load and losses at all load levels.
9.2.2 11.2.2 Voltage schedule coordination is the responsibility of each Party. Generally, the voltage schedule is determined based on conditions in the proximity of generating stations and extra high voltage stations (230 KV facilities and above) with voltage regulating capabilities. Each Party shall work works with its respective owners of transmission facilities and Balancing Authority Control Areas and shall to determine adequate and reliable voltage schedules under considering actual and post-contingency conditions.
9.2.3 11.2.3 Each Party shall will establish voltage limits at critical locations within its own system and provide exchange this information to with the other PartyParties. This information shall include: normal high voltage limits; normal low voltage limits; post-contingency emergency high voltage limits; and post-contingency emergency low voltage limits;; and shall identify the voltage limit value (if available) at which load shedding will be implemented.
9.2.4 11.2.4 Each Party shall remain aware will maintain awareness of the voltage limits in the other Party’s area (where the EMS Model includes sufficient detail to permit this) and awareness of outages and potential contingencies that could result in violation of those voltage limits. Each Party shall attempt to avoid exceeding such voltage limits.
9.2.5 11.2.5 The Parties shall will clearly communicate the level of voltage support needed during pre- or post-contingency conditions requiring voltage and reactive power coordination.
9.2.6 Each Party shall maintain a list of actions that are available to be taken when voltage support is necessary to respond to anticipated or prevailing system conditions.
9.2.7 At least once each calendar quarter, the Parties will exchange voltage schedules and meet and confer to identify system conditions that could impact the schedules. The Parties shall determine adjustments to the schedules, consistent with reliability.
9.2.8 The Parties shall use voltage control equipment in a cooperative manner to maintain a reliable bulk power transmission system voltage profile on their systems and surrounding systems, as follows:
9.2.8.1 Each Party has operational or functional control of reactive sources within its system, and shall direct adjustments to voltage schedules at appropriate facilities.
(a) Each Party generally will adjust its voltage schedules to best utilize its resources for operation.
(b) If a Party anticipates voltage or reactive problems, it shall inform the other Party (operations planning with respect to future day and Reliability Coordinator with respect to same day) of the situation, describe the conditions, and request voltage/reactive support under these procedures. As a part of the request, the Party shall identify the specific area where voltage/reactive support is requested, and provide an estimate of the magnitude and time duration of the request as well as the specific voltage and limit.
(c) The requesting Party shall arrange a conference call between the affected Balancing Authority Areas/transmission owners and the other Party. The purpose of this call is to ensure that the situation is fully understood and that an effective operating plan to address the situation has been or will be developed.
(d) Each Party shall implement or direct voltage schedule changes requested by the other Party, provided that a Party may decline a requested change if the change would result in equipment violations or reduce the effective operation of its facilities. A Party that declines a requested change must inform the requesting Party that the request cannot be granted and state the reason for denial.
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