Huawei's photovoltaic inverter is the first to pass the model parameter test of China Electric Power Research Institute

Recently, in the photovoltaic inverter model parameter test conducted by the National Energy Solar Power Generation Research and Development (Experimental) Center (NESC) of the China Electric Power Research Institute, Huawei successfully passed the test with excellent indicators in one go with its high-quality and high-performance photovoltaic inverter products. So far, Huawei has become the first inverter manufacturer in China to successfully pass this test project.

The string inverter grid-connected technology has excellent performance and meets the requirements of harsh working environments

It is reported that the inverter model parameter test in which Huawei participated was successfully completed in one go, and received unanimous praise from the national center, which also stated that Huawei's inverter grid-connected technology has excellent performance and fully meets the requirements of harsh grid-connected working conditions. The model parameter test was mainly based on the State Grid Corporation's enterprise standard Q/GDW 1993-2013 "Procedure for Model Verification and Parameter Testing of Photovoltaic Power Stations", Q/GDW 1994-2013 "Guidelines for Modeling Photovoltaic Power Stations", and the national standard GB/T 19964-2012 "Technical Regulations for Photovoltaic Power Stations Connected to the Power System".

According to a relevant person in charge of Huawei, the test items include zero/low voltage ride-through, grid adaptability, small disturbances on the AC side, and active and reactive power control command response. Compared with the test content of the national standard GB/T19964, this modeling not only requires zero/low voltage ride-through tests under pure active power, but also includes zero/low voltage ride-through tests under conditions where the inverter generates large inductive and capacitive reactive power, and the test conditions are more comprehensive. Huawei's string inverter completed the test in one go, showing good inverter grid-connected performance.

This test not only demonstrates the high-quality performance of Huawei inverters, but also proves once again that Huawei inverters have reached the leading level in the industry. It has made outstanding contributions to standardizing the model parameters of photovoltaic power stations and ensuring the safe and efficient grid-connected power generation of photovoltaic power stations!

Powerful combination to ensure safe and efficient grid-connected power generation of photovoltaic power stations

As we all know, power station modeling and simulation is one of the core technologies for new energy grid connection, and is also a key factor in standardizing photovoltaic power station model parameters and ensuring safe and efficient grid connection of photovoltaic power stations. As a leader in industry technology innovation, Huawei has joined forces with the National Energy Solar Power Research and Development (Experimental) Center (NESC) of the China Electric Power Research Institute in this test to ensure efficient and safe grid connection of new energy power stations, make industry management more standardized, and promote the overall development and technological progress of the industry.

It is understood that the National Energy Solar Power Research and Development (Experimental) Center (NESC) of the China Electric Power Research Institute has carried out in-depth research on photovoltaic power generation parameter testing technology. It has strong strength in modeling and simulation technology and rich experience in model parameter testing. It has successively realized the mathematical models of photovoltaic power station components and systems in simulation software such as DIgSILENT PowerFactory, PSASP and FASTEST. At the same time, it has undertaken a number of major scientific research projects such as "Construction of Grid-connected Photovoltaic System Testing Platform" and "Solar Power Generation Model and Parameter Identification Technology". It has completed the precipitation of photovoltaic power generation system parameter identification technology results and has a strong theoretical foundation and practical experience.

"The reason why the National Energy Solar Power Research and Development (Experimental) Center (NESC) of the China Electric Power Research Institute gave priority to Huawei inverters for related tests is that they saw the brand influence and technical strength of Huawei's smart photovoltaic products, and it also reflects the authoritative organization's high recognition of us." A relevant Huawei person in charge emphasized.

Using simulation modeling technology to promote efficient development of the photovoltaic industry

Since the promulgation of the Renewable Energy Law in 2006, my country's photovoltaic power generation industry has entered a stage of rapid development. According to statistics from the National Energy Administration, in 2015, my country's total photovoltaic installed capacity was about 14.95GW, with a total installed capacity of about 43GW, surpassing Germany to become the country with the highest cumulative photovoltaic installed capacity in the world. Photovoltaics has become one of my country's important sources of new energy power generation. However, since my country has not yet fully carried out the modeling and evaluation of new energy power stations, the characteristics of a large number of photovoltaic grid-connected power stations that have been put into operation cannot be evaluated, resulting in uneven "quality" of photovoltaic power stations and hidden dangers of grid-connected safe operation. The use of simulation modeling technology can enable my country's photovoltaic industry to achieve a qualitative leap.

The so-called simulation modeling technology is to use large-scale power system simulation software in the power station planning stage to analyze and evaluate in advance the impact of the power station on the local power grid after it is built and put into operation. These models can be used for grid connection research, regional renewable energy planning, transmission system evaluation, power station steady-state characteristics and transient characteristics research, etc. Specifically, through simulation models, the fault ride-through capability, frequency response capability, steady-state and dynamic reactive power response and other characteristics of renewable energy power stations can be studied, and it can be verified whether the photovoltaic power station can meet the standards and local power grid requirements under various working points, grid-connected environments and fault conditions, so as to ensure the safe and efficient grid-connected power generation of photovoltaic power stations and standardize industry management.