Saudi Arabian Grid Code May 2024

Generating Unit Capability Tests Test Requirements 4.9.7.1 Tests shall be conducted, in accordance with the agreed procedure and standards, to confirm the compliance of Generating Units for the following: (i) capability of Generating Units to operate within their Registered Generation Planning Parameters; (ii) capability of the Generating Units to meet the applicable requirements of the Grid Code; (iii) capability to deliver the System Service(s) that the Generator has agreed to provide; and (iv) Availability of Generating Units in accordance with their capability Declaration. 4.9.7.2 All tests shall be recorded and witnessed by the authorized representatives of the TSP, Generator, and/or User. 4.9.7.3 The Generator shall demonstrate to the TSP the reliability and accuracy of the test instruments and Equipment to be used in the test. 4.9.7.4 The TSP may at any time issue instructions requiring tests to be carried out on any Generating Unit. All tests shall be of sufficient duration and shall be conducted no more than twice a year except when there are reasonable grounds to justify the necessity for further tests. 4.9.7.5 If a Generating Unit fails the test, the Generator shall correct the deficiency within an agreed period to attain the relevant registered parameters for that Generating Unit. 4.9.7.6 Once the Generator achieves the registered parameters of its Generating Unit that previously had failed the test, it shall immediately notify the TSP. The Chapter 4 - Operating Code The Saudi Arabian Grid Code Updated Version: May 2024 TSP shall then require the Generator to conduct a new test in order to verify that the appropriate parameter has been restored to its Registered value. 4.9.7.7 If a dispute arises relating to the failure of a Generating Unit to pass a given test, the TSP, the Generator, and/or User shall seek to resolve the dispute among themselves. Failing to agree, the dispute shall be resolved in accordance with the Regulatory Guidelines for this purpose. Tests to be Performed 4.9.7.8 Reactive Power Test shall demonstrate that the Generating Unit meets the registered Reactive Power capability requirements as specified in Chapter 2: Connection Code. The Generating Unit shall pass the test if the measured values are within ± five (5) percent of the Capability as registered with the TSP. 4.9.7.9 Primary Response Test shall demonstrate that the Generating Unit has the capability to provide Primary Response. The Generating Unit shall pass the test if the measured response in MW/Hz is within ± five (5) percent of the required level of response within five (5) seconds. Fast Start Capability Test shall demonstrate that the Generating Unit has the capability to Start-up, Synchronize with the Grid within ten (10) minutes, and be loaded up to its offered capability. The Generating Unit shall pass the test if it meets the Fast Start capability requirements. Black Start Test shall demonstrate that the Generating Plant with Black Start capability can implement a Black Start procedure. To pass the test, the Generating Unit shall start on its own, Synchronize with the Grid, and carry load without the need for external Power supply. Declared Data Capability Tests shall demonstrate that the non-Renewable Resource Generation can be Scheduled and Dispatched in accordance with the Declared Data. To pass the test, the Unit shall satisfy the ability to achieve the Declared Data. In case of RRG, Declared Data Capability Tests may be undertaken by continuous monitoring of the environmental conditions, Output parameters and Grid parameters or maybe Tests called at discrete points in time. Dispatch Accuracy Test shall demonstrate that the Generating Unit meets the relevant Generation Scheduling and Dispatch Parameters as per new clause 2.5.5.16. The non-Renewable Resource Generation shall pass the test if: Chapter 4 - Operating Code The Saudi Arabian Grid Code Updated Version: May 2024 (i) in the case of Synchronization, the process is achieved within ± five (5) minutes of the registered Synchronization time; (ii) in the case of Synchronizing Generation (if registered as a Generation Scheduling and Dispatch Parameters), the Synchronizing Generation achieved is within an error level equivalent to ±2.5% of Net Declared Capability; (iii) in the case of meeting Ramp Rates, the actual Ramp Rate is within ± ten (10)% of the registered Ramp Rate; (iv) in the case of meeting Load Reduction rates, the actual Load Reduction rate is within ± ten (10)% of the registered Load Reduction rate; (v) in the case of minimum base load Generating Units, variation of + ten (10)% will be acceptable; and (vi) in the case of all other Generation Scheduling and Dispatch Parameters, values are within ± 1.5% of the declared values. The Renewable Resource Generation shall pass the test if they comply with the test foreseen under (iv). The TSP may advise the Generators one or more of the following tests also, if considered necessary by the TSP: (i) deep voltage transient by short-circuit; (ii) Generating Unit’s changeover to House Load Operation; (iii) Generating Unit House Load Operation for one hour; (iv) step response of Generating Unit voltage; (v) Power System Stabilizer (PSS); and (vi) overload Capacity. System Service Acceptability Test shall determine the committed services in terms of parameter quantity or volume, timeliness, and other operational requirements. Generators providing System Services shall conduct the test or define the committed service. However, monitoring by the TSP of System Service performance in response to System-derived inputs shall also be carried out. Chapter 4 - Operating Code The Saudi Arabian Grid Code Updated Version: May 2024