Instruction is issued by the System Operator with an Instruction Effective Time equal to or before the time Step 1 is achieved, profile the new Dispatch Instruction as per Table 1 or Table 2 as appropriate. MXON n/a Step 1: Instruction to a Generator Unit to adjust its Output to the registered Short Term Maximisation Capability at the specified Instruction Effective Time until a specified Effective Until Time or until the Target Instruction Level must be maintained in with Technical Offer Data, whichever is later; : with the Instruction Effective Time set equal to the time Step 1 is achieved, adjust Target Instruction Level to Final Physical Notification Quantities; however if a new Dispatch Instruction is issued by the System Operator with an Instruction Effective Time equal to or before the time Step 1 is achieved, profile the new Dispatch Instruction as per Table 1 or Table 2 as appropriate. MXOF n/a Step 1: Instruction to de-activate a Maximisation Instruction at the specified Instruction Effective Time and adjust the Generator Unit Output to MWOF issued with MXOF or the last valid MWOF prior to the Maximisation instruction until specified Effective Until Time or until the Target Instruction Level must be maintained in with Technical Offer Data, whichever is later; : with the Instruction Effective Time set equal to the time Step 1 is achieved, adjust Target Instruction Level to Final Physical Notification Quantities; however if a new Dispatch Instruction is issued by the System Operator with an Instruction Effective Time equal to or before the time Step 1 is achieved, profile the new Dispatch Instruction as per Table 1 or Table 2 as appropriate. In addition to Dispatch Instructions issued by the System Operator, Pseudo Dispatch Instructions, corresponding to a subset of the Dispatch Instructions listed in Table 1, shall also be created by the Market Operator and used in accordance to the description in Table 3 to calculate Pseudo Instruction Profiles. . Table 3 – Instruction Codes and Instruction Combination Codes for Pseudo Dispatch Instructions
Create Instruction Profiles The Instruction Profile function calculates a piecewise linear trajectory over time, for each Dispatch Instruction, taking into account a subset of the Generator Unit’s input data listed in paragraphs 9 to 16 with the following criteria: In order to derive Dispatch Quantities (qDuoh(t)) for each Generator Unit, u, for each Bid Offer Acceptance, o, in Period, h, the following profiles shall be created: Physical Notification Instruction Profile input data in paragraphs 9 to 14; and Pseudo Instruction Profile using input data in paragraphs 9 to 13 plus paragraphs 15 to 16. In to derive Dispatch Quantities (QDuγ) for each Generator Unit, u, in Imbalance Settlement Period, γ, for the purpose of Undelivered Quantity calculation and Uninstructed Imbalance calculation, an Uninstructed Imbalance Instruction Profile shall be created using input data in paragraphs 10 to 13. Each section of the piecewise linear Instruction Profile for a Generator Unit shall be produced in sequence by stepping through the sequence of Dispatch Instructions and/or Pseudo Dispatch Instructions, for the Generator Unit as follows: The MW/Time Co-ordinates from the previous segment of the Instruction Profile be retrieved. For the initial segment of the Instruction Profile the MW/Time Co-ordinate is the end MW/Time Co-ordinate from the end segment of the Instruction Profile calculated for the previous Day. Where an initial MW/Time Co-ordinate is not available for the Generator Unit from the previous Instruction Profiling run, the Target Instruction Level for the latest Dispatch Instruction for the Generator Unit prior to :00 on the Day shall be used as the initial Instructed Quantity for the Generator Unit. The active Dispatch Instruction or Pseudo Dispatch Instruction shall be identified using the MW/Time Co-ordinates from the previous segment of the Instruction Profile and the Instruction Effective Time that corresponds to that Dispatch Instruction or Pseudo Dispatch Instruction. The active Dispatch Instruction or Pseudo Dispatch Instruction shall be validated by the Market Operator using the MW/Time Co-ordinates from the previous segment of the Instruction Profile, the Target Instruction Level, the Instruction Code and Instruction Combination Code using the rules specified in Table 8 and Table 9. Table 8 – Instruction Profiling Validation Rules for Generator Units that are not Pumped Storage Units or Battery Storage Units Instructed Quantity from previous segment of Instruction Profile Instruction Code for active Dispatch Instruction or Pseudo Dispatch Instructions Target Instruction Level Action
0 SYNC Null Set Target Instruction of accompanying Dispatch Instruction having Instruction Code MWOF to Registered Minimum Stable Generation. 0 SYNC < Registered Minimum Stable Generation Set Target Instruction Level of accompanying Dispatch Instruction having Instruction Code MWOF to Registered Minimum Stable Generation. 0 MWOF 0 Ignore Dispatch Instruction. 0 MWOF > 0 Use Cold Start Up Operating Characteristics. 0 DESY Ignore Dispatch Instruction. >0 SYNC Ignore Dispatch Instruction. >0 MWOF 0 Profile to zero. >0 DESY >0 Profile to MWOF(0). 0 TRIP Ignore Dispatch Instruction. Any PSYN qFPNuh(t) Profile to qFPNuh(t) Any PSYN Null or <> qFPNuh(t) Maintain the Generator Unit Output to the specified SYNC Target Instruction Level Any PMWO qFPNuh(t) Profile to qFPNuh(t) Any PMWO Null or <> qFPNuh(t) Maintain the Generator Unit Output to the specified SYNC Target Instruction Level Any PDES qFPNuh(t) Profile to qFPNuh(t)
Any PDES Null or <> qFPNuh(t) Maintain the Generator Unit Output to the specified DESY Target Instruction Level Any PMXN qFPNuh(t) Profile to qFPNuh(t) Any PMXN Null or <> qFPNuh(t) Maintain the Generator Unit Output to the specified MXON Target Instruction Level Any PMXF qFPNuh(t) Profile to qFPNuh(t) Any PMXF Null or <> qFPNuh(t) Maintain the Generator Unit Output to the specified MXOF Target Instruction Level Any POFF qFPNuh(t) Profile to qFPNuh(t) Any POFF Null or <> qFPNuh(t) Maintain the Generator Unit Output to 0MW Any PCOD qFPNuh(t) Profile to qFPNuh(t) Any PCOD Null or <> qFPNuh(t) Maintain the Generator Unit Output to preceding Target Instruction Level Any PISP qFPNuh(t) Profile to qFPNuh(t) Any PISP Null or <> qFPNuh(t) Maintain the Generator Unit Output to preceding Target Instruction Table 9 – Instruction Profiling Validation Rules for Pumped Storage Units and Battery Storage Units Instructed Quantity from previous segment of Instruction Profile Instruction Code for active Dispatch Instruction Instruction Combination Code Action.