Saudi Arabian Grid Code May 2024

Commissioning of Equipment and Physical Connection to the Grid 2.3.7.1 Upon completion of the User Development, including work at the Connection Point, the Equipment at the Connection Point and the User Development shall be put to Commissioning Tests procedure as specified in (4.9.6) of Chapter 4: Operating Code. 2.3.7.2 The User shall then submit to the TSP a statement of Readiness to Connect, which shall include the Commissioning Test Reports. 2.3.7.3 Upon acceptance of the User’s statement of Readiness to Connect, the TSP shall, within fifteen (15) days, issue a Technical Completion Certificate to the Chapter 2 - Connection Code The Saudi Arabian Grid Code Updated Version: May 2024 User if the TSP finds the Commissioning Reports to be acceptable. Otherwise, the TSP will ask the User to perform additional Tests as the TSP may consider necessary. 2.3.7.4 The physical Connection to the Grid shall be made by the TSP within ten (10) days of the issue of Technical Completion Certificate by the TSP to the User. Transmission System Performance 2.4.1 General Provisions 2.4.1.1 The TSP shall strive to maintain the Transmission System performance within the limits and ranges specified in the Minimum National Power Quality Standards for the Saudi Arabian Transmission Grid (currently under development). Until such time, the TSP shall strive to maintain the Transmission System performance within the limits and ranges as specified in this section. 2.4.1.2 Users shall ensure that their Plant and Apparatus at Connection Points are also designed and operated such that these operate satisfactorily within the specified limits and ranges to be set out in the Minimum National Power Quality Standards. Until such time, the limits and ranges as specified in this section shall be adhered to. 2.4.2 Frequency Variations 2.4.2.1 The Transmission System shall have a nominal frequency of 60 Hz and R-Y- B counter-clock-wise phase rotation. The TSP shall maintain it within the limits of 59.9 and 60.1 Hz during normal Grid operation. 2.4.2.2 The System frequency could rise to 62.5 Hz or fall to 57.0 Hz in exceptional circumstances. To enable the TSP to maintain the frequency within the limits specified in (2.4.2.1), the design of Generator’s Plant and Apparatus must enable operation of that Plant and Apparatus in accordance with the following: Below Nominal Frequency (Hz) Above Nominal Frequency (Hz) Operation Requirement Continuous for a period of 30 minutes for a period of 30 seconds Chapter 2 - Connection Code The Saudi Arabian Grid Code Updated Version: May 2024 Other Users should ensure that their Equipment is designed or protected for these exceptional circumstances. 2.4.3 Voltage Variations The voltage at any point on the TSP system will normally remain within the nominal values as stated in the table below, unless abnormal conditions prevail. Under exceptional circumstances, the maximum over voltage limits stated below should not be exceeded for more than thirty (30) minutes: Nominal Voltage (kV) Normal Range 30-Minute Range 110 kV 115 kV 132 kV 230 kV 380 kV