Efficient method for collecting data of converter of energy storage power station

Abstract

The invention discloses a method for collecting data of a converter of an energy storage power station. The method comprises: step 1, a collector sends reading and writing instruction frames to the converter; step 2, when the value of a type code domain in the reading and writing instruction frames is the designated value, step 3 is conducted; step 3, the converter analyzes the bits in a function code domain in the reading and writing instruction frames from the first bit to the fortieth bit one by one, and the efficient value of a corresponding command register in a data domain is extracted; step 4, the converter analyzes the bits in the function code domain in the reading and writing instruction frames from the forty-first bit to the eightieth bit one by one, and the efficient value of a corresponding state register is written in the data field; step 5, responding frames are formed according to the structure of the reading and writing instruction frames and are sent back to the collector, when the value of the type code domain in the responding frames is the designated value, step 6 is conducted; and step 6, the collector analyzes the bits in a function code domain in the responding frames from the forty-first bit to the eightieth bit one by one, and the efficient value of the corresponding state register in the data domain is extracted. The method for collecting the data of the converter of the energy storage power station is capable of improving efficiency and real time performance of Ethernet communication.

Description

technical field [0001] The invention relates to a data acquisition method for a converter of an energy storage power station, and its main application field is a megawatt-level large-capacity energy storage power station. Background technique [0002] As an emerging industry, megawatt-scale large-capacity energy storage power stations have high requirements for real-time control cycles. The existing data acquisition technologies and methods of converters in energy storage power stations are divided into two categories. The first category is communication methods, and the technologies used mainly include Ethernet, CAN bus, RS485 bus, etc.; the second category is analog hardware Wiring mode, the main signal type is standard current / voltage signal. The first type of method is flexible and has strong anti-interference ability, but it does not consider the real-time requirements of the energy storage power station, and needs to be improved specifically for the characteristics of...

AI Technical Summary

Problems solved by technology

The first type of method is flexible and has strong anti-interference ability, but it does not consider the real-time requirements of the energy storage power station, and needs to be improved specifically for the characteristics of the converter of the energy storage power station; the second type is relatively high in real-time performance, but the accuracy is not high. Poor anti-interference ability, has been gradually eliminated

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