计及SOC约束的构网型混合储能系统惯量自适应及二次调整控制

打开文本图片集

Inertia adaptive control and secondary adjustment control of grid forming hybrid energy storage system considering SOC constraints ZHANGXiang1²，YULin1³，ZHANGQiang1，LIUWenhao1 （1.Dongguan Power Supply Bureau， Guangdong Power Grid Limited Liability Company， Dongguan 523ooo，China;2. School of Automation， Guangdong University of Technology，

Guangzhou，51ooo6，China;3.School of Electrical Engineering，Shanghai University ofElectric Power， Shanghai 200090， China）

Abstract：Aiming at the problem that the grid-structured energy storage converter controled by virtual synchronous generatoris difficult tochange thevirtual inertiaat willand the frequency capabilityofthe transient support system is insufficient，an inertia secondary adjustment method considering the state of charge of the supercapacitor in the hybrid energy storage system is proposed based on the inertia adaptive control of the traditional grid-structured energy storage converter.By controling the output of different types of battries to respond to the high-frequency and low-frequency components in the frequency disturbance signal，the active support of the system is realized.The RTLAB hardware-in-the-loop experimental platform is constructed，and different inertiacontrol strategies arecompared and analyzed.The results show that the proposed strategy can not onlyprevent the super capacitor from overcharging and over-discharging，but also improve the output characteristics of the transient processof the super capacitor，and efectively improve the transient support ability of the grid-structured energy storage converter.

Keywords：virtual synchronous generator; state ofcharge; inertiaadaptivecontrol; grid forming converter;hybrid energy storage;Philips-Heffron model; SOC

0 引言

电机（synchronousgenerator，SG）主导的传统电力系统正面临“惯量空心化”等问题。（剩余12511字）