The National Energy Solar Power R&D (Experimental) Center held a summary meeting for the preliminary PV inverter model parameter identification and verification work, and accumulated experience for domestic PV inverter parameter identification and model verification.

The identification of model parameters can provide basic model and data support for the safety and stability analysis and operation control of power systems containing large-scale photovoltaic power generation. The tested inverter has a rated power of 500 kilowatts. The test covers various operating modes. A total of 260 sets of tests including large grid voltage disturbance, active/reactive power command control, small grid voltage disturbance, and irradiance disturbance have been performed. . The Chinese Academy of Electric Power carried out parameter identification and model checking based on test data to obtain accurate inverter models and parameters.

In recent years, China's photovoltaic power generation has been developing rapidly, and several million-kilowatt photovoltaic power generation bases have been formed. Accurate models and parameters are the basis for conducting grid-connected photovoltaic power generation stability analysis and development of control measures. In some countries where new energy generation is more mature, relevant laws and regulations and grid-connected guidelines have been established, requiring equipment manufacturers and power plant operators. A grid-connected analysis model for photovoltaic power plants is provided to the grid dispatching agency.

Since 2009, the Chinese Academy of Electric Power has carried out a lot of research on photovoltaic power generation modeling, parameter identification, and grid analysis, and has established a photovoltaic power station model suitable for power system security and stability analysis in mainstream power system analysis software. , Two national standards for "Guidelines for Photovoltaic Power Generation System Modeling" and "Models for Photovoltaic Power System Models and Parameters Testing" have been compiled to promote the safe and stable operation of photovoltaic power generation after grid connection and to increase the capacity of photovoltaic generation. Positive contribution.

Walnut Shell

Walnut Shell,Granules Walnut Shell Powder,Brown Walnut Shell,Broken Natural Walnut Shell

Ningxia Jinyihui Environmental Protection Technology Co., Ltd. , https://www.chinajyhhb.com