Saudi Arabian Grid Code May 2024

This chapter specifies the responsibilities and obligations of the TSP and Users with respect to Scheduling and Dispatch of Generating Units and other Demand resources. It sets out the procedure for supplying of timely and accurate information by the Users to the TSP, the TSP’s preparing and issuing of Generation Schedules, and issuing of Dispatch Instructions. 5.1.2 This chapter is divided into two sections: Generation Scheduling and Generation Dispatch. Section 5.3, Generation Scheduling, deals with submitting of Availability Notices and relevant information by Generators and any modification to them subsequently, if required. The section also describes the procedure to be followed by the TSP for preparing and issuing of Generation Schedule to specify which Generating Units may be required for Dispatch. This section also details the Special Actions that the TSP may require from users to match supply with Demand and ensure the requisite Stability and Reliability on the Grid. Section 5.4, Generation Dispatch, deals with Dispatch of Generating Units and executing of other Special Actions to minimize cost of Supply procurement while ensuring the availability of adequate level of Operating Margin and other System Services. Objective The objective of this chapter is to enable the TSP to Schedule and Dispatch adequate Generation resources to meet electricity Demand at all times at minimum cost while ensuring the integrity of the System, as well as the requisite levels of supply Quality and Reliability. Generation Scheduling 5.3.1 Scheduling Process 5.3.1.1 The TSP will carry out Scheduling daily to develop a Generation Schedule for the next following Schedule Day. This process will be phased and iterative to allow appropriate interactions of the TSP with Generators and other Users to match Demand with supply on an instant-by-instant basis with the requisite Chapter 5 - Scheduling and Dispatch Code The Saudi Arabian Grid Code Updated Version: May 2024 levels of supply Quality and Reliability. The process of Generation Scheduling is shown in Figure 5.1 on page 140. 5.3.1.2 The Schedule Day will begin at 00:00 hours on the Schedule Day, and will last for 24 hours until 00:00 hours on the next day. 5.3.1.3 Grid Users must submit sufficient data as detailed in this chapter to allow the TSP to prepare a Generation Schedule. Since the TSP is required to match Generation, transfers, and Demand on an instant-by-instant basis, some additional information may be required by the TSP to accomplish this objective. Details of any reasonable additional information requirements will be notified by the TSP to the relevant Users, as the need arises. 5.3.1.4 Data submissions to the TSP shall normally be made electronically in accordance with the provisions of Chapter 6: Data and Information Exchange Code as well as of any agreement between the TSP and the User. In the event of failure of the electronic systems for submitting of data to the TSP, data submissions may be made by fax. 5.3.1.5 If, any changes occur after a User has supplied information to the TSP pursuant to (5.3.2, 5.3.3, and 5.3.4) below, then the User shall inform the TSP, without delay, of such changes. 5.3.1.6 Based on the Declarations and information supplied (and revised afterwards as the case may be) by the Users, the TSP will develop a Generation Schedule for the next following Schedule Day and inform the relevant Users accordingly.