COMPLIANCE TESTING OF U-Q/PMAX AND P-Q/PMAX REQUIREMENTS FROM THE GRID CODE ON CONNECTION TO THE TRANSMISSION SYSTEM IN THE PROCESS OF CONNECTING A POWER PARK MODULE WITH ENERGY STORAGE

In the process of connecting facilities to the transmission system—during commissioning, trial operation, and throughout their operational lifetime—it is essential to verify their compliance with the Grid Connection Code requirements. For the connection of a power park module to the transmission system, a critical set of requirements relates to the ability to generate or absorb reactive power (Q), specifically: U-Q/Pmax requirement, which is evaluated across the entire voltage range at the point of connection while maintaining the module’s maximum active power output (Pmax). P-Q/Pmax requirement, which is assessed for the entire range of active power output, at a constant voltage at the connection point. If the power park module includes an energy storage system, compliance verification must be conducted for different operating modes and combinations of the module’s subsystems. This paper presents a methodology for verifying compliance for different types of energy park modules, including wind power plants (WPPs) and photovoltaic power plants (PVPPs) with integrated energy storage. Additionally, test cases for compliance simulation will be provided, forming the foundation upon which the methodology was developed.