Jinlang Technology has applied for a patent related to a distributed flexible load inertia optimization control strategy for photovoltaic and energy storage new energy stations. This innovation aims to effectively address the challenges posed by significant fluctuations in energy storage power, which weaken the grid’s frequency support capability.
According to information from the National Intellectual Property Administration, Zhejiang University and Jinlang Technology Co., Ltd. submitted the patent titled “A distributed flexible load inertia optimization control strategy for photovoltaic and energy storage new energy stations”, with publication number CN119853155A, on March 2025.
The patent summary reveals that this invention pertains to the field of collaborative grid control for photovoltaic energy storage systems and includes the following steps:
- S1: Measure and obtain the input power of each photovoltaic energy storage converter, the output power on the grid side, and frequency information.
- S2: Based on changes in grid frequency and the grid control strategy employed by the energy storage converters, adjust the required source-side input power in real-time.
- S3: Adjust the source-side input power in real-time through the connection and disconnection of flexible loads, providing inertia support for grid frequency during frequency events.
- S4: Implement a flexible load inertia optimization control based on energy balance according to steps S2 and S3.
This innovation significantly enhances the grid’s frequency support ability, which has been compromised due to slow responses and large fluctuations in energy storage power. The control logic for connecting and disconnecting flexible loads helps avoid frequent charging and discharging during power stabilization, thereby improving the reliability of operations at new energy stations.
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