Saudi Arabian Grid Code May 2024

Automatic Reactive Power or Automatic Voltage Control System Mode of Operation Each Generator shall operate its Generating Units with automatic voltage regulator (AVR), var limiters, and Power System Stabilizers (PSS), as required under their respective Connection Agreement, in service at all times unless released from this obligation by the TSP. Chapter 5 - Scheduling and Dispatch Code The Saudi Arabian Grid Code Updated Version: May 2024 Dispatch Instructions for Distribution Entities and Directly-connected Customers 5.4.10.1 Dispatch Instructions to Distribution Entities and Directly-connected Customers relating to the Schedule Day will normally be issued at any time during the period beginning immediately after the issue of the Generation Schedule as a list of Special Actions in respect of that Schedule Day. 5.4.10.2 The TSP will issue Dispatch Instructions directly to the Distribution Entity or Directly-connected Customer at each Control Center in relation to Special Actions and Demand Control. Dispatch Instructions may include: (i) a requirement for Demand Reduction and Disconnection or Restoration; (ii) an instruction for load transfer between Connection Points; and (iii) an instruction to switch in the load shedding scheme. 5.4.10.3 Dispatch Instructions to a Distribution Entity or Directly-connected Customer will be given by telephone (and will include an exchange of operator names) and must be formally accepted by the Distribution Entity or the Directly- connected Customer (as the case may be) by telephone. The Distribution Entity or the Directly-connected Customer (as the case may be) must comply without delay with all the Dispatch Instructions received by it. 5.4.10.4 In the event that in carrying out the Dispatch Instructions, an unforeseen problem arises, the Distribution Entity or the Directly-connected Customer (as the case may be) will notify the TSP by telephone without delay. 5.4.10.5 The Dispatch Instruction delivered verbally (by phone) shall be followed by a written confirmation afterwards. Nature of Dispatch Instructions The format of and the terms to be used by the TSP in issuing instructions together with their meanings will be provided by the TSP to participating Users. Chapter 5 - Scheduling and Dispatch Code The Saudi Arabian Grid Code Updated Version: May 2024 Schedule Day Generators submit Declarations/Nominations to TSP by 10:00 hours TSP Prepares Generation Schedule TSP adjusts/re- optimizes Generation Schedule, if required TSP issues Gen. Schedule by 15:00 hours TSP revises generation Schedule, if required Special Actions by Distribution Entity/ Directly-connected Customer Negative Minimum Demand Regulation Notice of Inadequate Operating tem Margin TSP contacts relevant Generator to get Declaration/Nomination TSP estimates the Declaration/ Nomination Generator submits revised Parameters to TSP, if necessary No Yes Figure 5.1 Overview of Generation Scheduling Process Yes Yes No No Special Actions by Generator 12:00 hours 15:00 hours 10:00 hours Day ahead of Schedule Day TSP receives these by 10:00 hours? Generator submits Declaration/ Nomination by 12:00 hours? TSP receives these before 15:00 hours? Chapter 5 - Scheduling and Dispatch Code The Saudi Arabian Grid Code Updated Version: May 2024 Figure