High Renewable Penetration Development Planning under System Inertia Constraints

The proportion of intermittent renewable energy has rapidly increased, and gradually become the main form of power generation. Under massive planning and construction of renewable energies, the rotating inertia of regional power system shows a gradually decreasing trend which weakens the power system's frequency stability, so it is necessary to take the system inertia as a constraint index in future high penetration renewable development planning. This paper introduces a method to estimate the inertia and the minimum inertia limit for traditional power system and for future high renewable penetration power system including virtual inertia of renewable generation. An actual provincial power system is used in this paper as the case study to analyze the trend of system inertia and minimum inertia constraint under massive renewable development.