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Date: Dec. 4, 2022, 11:04 p.m.

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Date: 2022-12-12 14:29:57.000000

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Date: 2022-12-13 09:21:45.000000

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Power Flow Algorithm Used in Scheduling, Pricing, and Dispatch

Published by Department of Energy(DOE) on Dec. 4, 2022.
Requested from DOE by B. Deniega at 11:04 PM on Dec. 4, 2022.
Purpose: Research
Date of Coverage: 12/04/2022 - 12/04/2022
Tracking no: #DOE-358664980822

R.CABAOIG Dec. 4, 2022, 11:04 p.m.

Hi! I would like to ask some questions: Which power flow algorithm (full Newton-Raphson method, fast decoupled power flow, DC power flow, etc.) do the System Operator (SO - NGCP) and Market Operator (MO - IEMOP) use in scheduling, pricing, and dispatch every 5 minutes? Do you (or ERC) require the SO and MO to use the answer above? Or do the SO and MO have the freedom to choose their preferred algorithm? Thanks!

R.DIVISION Dec. 12, 2022, 2:29 p.m.

December 12, 2022 Dear Mr. Cabaoig, Thank you for your request dated Dec 04, 2022 under Executive Order No. 2 (s. 2016) on Freedom of Information in the Executive Branch, for Power Flow Algorithm Used in Scheduling, Pricing, and Dispatch. We received your request on Dec 04, 2022 and will respond on or before Dec 23, 2022 11:04:28 PM, in accordance with the Executive Order's implementing rules and regulations. Should you have any questions regarding your request, kindly contact me using the reply function on the eFOI portal at https://www.foi.gov.ph/requests/aglzfmVmb2ktcGhyHQsSB0NvbnRlbnQiEERPRS0zNTg2NjQ5ODA4MjIM, for request with ticket number #DOE-358664980822. Thank you. Respectfully, Joyanne Faye S. Angeles FOI Receiving Officer DOE - Records Management Division

E.MANAGEMENT BUREAU Dec. 13, 2022, 9:21 a.m.

December 13, 2022 Dear Mr. Cabaoig, Greetings! Thank you for your request dated Dec 04, 2022 11:04:28 PM under Executive Order No. 2 (s. 2016) on Freedom of Information in the Executive Branch. Your Request You asked for Power Flow Algorithm Used in Scheduling, Pricing, and Dispatch. Response to Request Your FOI request is approved. I enclose a copy of all of the information you requested. A. Is ERC issued now a Forward Contracting for RCOA or Contestable Customers? -The DOE is not aware of any issuance from the ERC governing Forward Contracting for RCOA or Contestable Customers. To address the query, youE may refer the query to the ERC. B. Which power flow algorithm (full Newton-Raphson method, fast decoupled power flow, DC power flow, etc.) do the System Operator (SO - NGCP) and Market Operator (MO - IEMOP) use in scheduling, pricing, and dispatch every 5 minutes? -The Market Management System of the WESM uses AC power flow using Newton Raphson and Fast Decoupled method. Do you (or ERC) require the SO and MO to use the answer above? Or do the SO and MO have the freedom to choose their preferred algorithm? -The WESM Rules require the use of AC power flow but does not specify the type to be used. Your right to request a review We would love to hear your feedback so we can improve our services. Kindly fill out the DOE FOI Feedback Form from this link: https://forms.gle/U8UzxTF6GHvuPkFQ7 Thank you. Respectfully, Electric Power Industry Management Bureau FOI Receiving Officer

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