Method and device for realizing integration of protection and control, communication and AGC substation

Abstract

The invention relates to a method for realizing integration of protection and control, communication and an AGC substation. The method is characterized in that a protection and control module, a communication management module and a newly-added AGC substation module are realized in the same device. The method is mainly applied to the field of new energy power generation like photovoltaic power generation. The method has the advantages that based on the device, besides the protection and control module and the communication module, a total power instruction of a superior AGC system to a sub-array can also be received and is optimized, controlled and resolved to power generation units, the total station AGC operating accuracy and timeliness are improved, the capacity of the superior AGC system is increased, and load bottleneck is calculated; the device is directly installed in a box-type transformer, the problems of multiple devices and high cost in a conventional scheme are avoided, and the additional high cost and installation difficulty caused by arranging local cubicles in the conventional scheme are also avoided; the AGC control efficiency is effectively improved, the total equipment cost is lowered, investment is reduced, secondary wiring is optimized, and the economic operation level of power plants is increased.

Description

technical field [0001] The invention relates to the field of new energy power generation automation, in particular to a new energy protection measurement and control communication and AGC substation integration realization method and device applied in a new energy photovoltaic power station. Background technique [0002] In recent years, with the continuous introduction of national policies to support the new energy industry, large-scale new energy photovoltaic power stations and wind farms have emerged. In order to meet the needs of the system grid for the safety and monitoring of the new energy power plant system, it is required to realize real-time communication monitoring and power AGC control of each power generation unit or sub-array in the booster station or remote monitoring center. Taking photovoltaic power generation as an example, each photovoltaic sub-array (generally 1-1.25MWp) of a photovoltaic power station usually needs to be equipped with three types of equi...

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved by the present invention are: 1) solve the problems of box-type transformer protection measurement and control and communication management in the existing conventional technology, and the implementation scheme of three devices of the ring network switch is high in cost and inconvenient to install; 2) solve the problems of the existing new Energy photovoltaic power plants, especially string photovoltaic power plants, are difficult to perform effective AGC power control due to the huge number of inverters

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