A dynamic frequency conversion data acquisition method for state monitoring of wind-solar-storage combined power generation

Abstract

The invention discloses a dynamic variable-frequency data collection method for monitoring wind-PV-ES hybrid power generation status. The method comprises the following steps: step 1, an inter-field scheduling monitoring work station in a monitoring layer obtains an operation combination mode of a hybrid power generation system and initializes task characteristic parameters at the same time; step 2, the monitoring layer monitors whether a data collection time is reached and sends a collection time instruction to a collection layer; step 3, the inter-field scheduling monitoring work station processes a received active power p and calculates a total active minute-level fluctuation rate; and step 4, the inter-field scheduling monitoring work station carries out analysis on each collection layer on the basis of the received active power p, adopts dual-threshold multi-level threshold frequency modulation mechanism to determine whether it is necessary to change the collection frequency, and determines the post-change collection frequency and sends the post-change collection frequency to each field-level work station if frequency change is needed. The method can recognize small data changes, achieves smooth switching between frequencies, and thus largely reduces the influence of threshold values to energy saving effects.

Description

technical field [0001] The present invention relates to a data acquisition method for state monitoring of wind-solar-storage combined power generation, and more specifically, to a dynamic frequency conversion data collection method for state monitoring of wind-wind-storage-storage combined power generation, which belongs to the technical field of wind-wind-storage-storage power generation technology. Background technique [0002] In recent years, clean energy power generation technologies represented by wind power and photovoltaic power generation have developed rapidly in China. Aiming at the characteristics of randomness, volatility and indirectness of primary energy, wind-solar-storage combined power generation technology aims to use the energy storage system to coordinate with photovoltaic power generation and wind power generation systems, effectively reducing the impact and impact of new energy power generation on the safe operation of the power system. Improve the sta...

AI Technical Summary

Problems solved by technology

However, traditional data collection methods usually use a fixed collection frequency, and the collection method is relatively "passive", ignoring the impact of data changes on the execution process of the collection task

When applied in actual engineering, there will be the following disadvantages: (1) The data of the collected object changes drastically in a certain time zone, the number of collections is insufficient, the key data is difficult to capture, easy to be ignored, and cannot accurately reflect the changing trend of the data; ( 2) The data of the acquisition object changes smoothly in a certain time zone, the number of acquisitions is too many, and the data redundancy increases, resulting in resource waste and system performance degradation; (3) With the expansion of the power generation system, the load pressure and bandwidth of network equipment The transmission pressure will increase accordingly, seriously affecting the overall performance, and the real-time performance of data cannot be guaranteed

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