CN-115656693-B - New energy system broadband phasor data collection method, device and data concentrator

CN115656693BCN 115656693 BCN115656693 BCN 115656693BCN-115656693-B

Abstract

The application relates to the technical field of new energy systems, in particular to a method and a device for collecting broadband phasor data of a new energy system and a data concentrator, wherein the method comprises the steps of receiving broadband phasor data of one or more devices transmitted by a monitoring device or other data concentrators of any substation in the new energy system; and (3) identifying time information in a head address of the broadband phasor data sent by each device, carrying out data alignment combination on each broadband phasor data in the same time period according to the time information, determining a preset data frame format according to a preset protocol, packaging the combined data according to the preset data frame format to obtain packaged data, and sending the packaged data to one or more target master stations in the new energy system through the expanded communication protocol. Therefore, the problems that the stored data packet is lost or the device crashes and cannot work normally and the like caused by the fact that a plurality of broadband phasor information needs to be calculated and processed under the condition that hardware computing resources are certain in the related technology are solved.

Inventors

LI YU
YI SHUXIAN
LIU YINGLIN
REN XIANG
ZHANG LU
XIE XIAORONG
LIU MIAO
LI HUAWEI
HUANG TIANXIAO
MA NINGNING
XIN GUANGMING
ZHANG SIQI
WANG XIAOFEI

Assignees

清华大学
国网冀北电力有限公司电力科学研究院

Dates

Publication Date: 20260505
Application Date: 20221109

Claims (9)

1. The broadband phasor data collection method of the new energy system is characterized by being applied to any data concentrator in the new energy system, wherein the method comprises the following steps of: Receiving one or more broadband phasor data transmitted by a monitoring device or other data concentrators of any substation in the new energy system, wherein the broadband phasor data comprises fundamental phasor data, harmonic phasor data and inter-harmonic phasor data; Identifying the first address of each quantity in each broadband phasor data, carrying out data combination on each broadband phasor data according to the first address of each quantity, determining a preset data frame format according to a preset protocol, and packaging the combined data according to the preset data frame format to obtain packaged data, wherein the preset protocol is that phasors and analog quantities defined in a preset communication protocol are subjected to first expansion, so that the first expanded preset communication protocol supports the transmission of preset frequency phasors and analog quantity data, and the first expanded preset communication protocol is utilized to transmit the inter-harmonic phasor data; And transmitting the packed data to one or more target master stations in the new energy system.
2. The method of claim 1, wherein said data combining said each wideband phasor data according to said each quantity's head address comprises: matching a pre-established memory space in the data concentrator according to the head address of each quantity; and merging each quantity in each broadband phasor data into a corresponding memory space to realize the collection of the broadband phasor data.
3. The method of claim 2, comprising, prior to matching the pre-established memory space within the data concentrator based on the head address of each quantity: starting a command thread and a data thread, and reading a data frame configuration file; and calculating the actual capacity of the memory space according to the data frame configuration file, and establishing the memory space in the data concentrator based on the actual capacity.
4. The method of claim 1, wherein the data concentrator communicates with the monitoring device of any substation in a multi-threaded manner.
5. The method of claim 1, wherein the data concentrator is capable of storing, processing and/or forwarding broadband oscillation information greater than or equal to a preset number of modes.
6. A broadband phasor data collection device for a new energy system, wherein the device is applied to any data concentrator in the new energy system, and the device comprises: The receiving module is used for receiving one or more broadband phasor data transmitted by a monitoring device or other data concentrators of any substation in the new energy system, wherein the broadband phasor data comprises fundamental phasor data, harmonic phasor data and inter-harmonic phasor data; The quantity processing module is used for identifying the first address of each quantity in each broadband phasor data, carrying out data combination on each broadband phasor data according to the first address of each quantity, determining a preset data frame format according to a preset protocol, and packaging the combined data according to the preset data frame format to obtain packaged data, wherein the preset protocol is that phasors and analog quantities defined in a preset communication protocol are subjected to first expansion, so that the first expanded preset communication protocol supports the transmission of preset frequency phasors and analog quantity data, and the first expanded preset communication protocol is utilized to transmit the inter-harmonic phasor data; and the data transmitting module is used for transmitting the packed data to one or more target master stations in the new energy system.
7. The apparatus as recited in claim 6, further comprising: the real-time library is used for receiving the packed data sent by the quantity processing module, so that the data sending module reads the packed data from the real-time library; the data storage module is used for reading the packed data, generating a storage file name according to the recorded time and station information, and writing the packed data into the storage file; And the offline module is used for reading the storage file of the data storage module and sending the storage file to the one or more target master stations in an offline data transmission mode.
8. A data concentrator comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the new energy system broadband phasor data collection method according to any one of claims 1-5.
9. A computer readable storage medium having stored thereon a computer program, the program being executable by a processor for implementing the new energy system broadband phasor data collection method according to any one of claims 1-5.

Description

New energy system broadband phasor data collection method, device and data concentrator Technical Field The present application relates to the technical field of new energy systems, and in particular, to a method and an apparatus for broadband phasor data collection of a new energy system, and a data concentrator. Background In recent years, the power system is gradually developed to high-proportion new energy and high-proportion power electronic equipment, and the problem of broadband oscillation caused by interaction between new energy such as wind power, photovoltaic and the like and a power grid is increasingly outstanding. In order to realize the monitoring of the dynamic behavior of the broadband oscillation, the related technology has developed a broadband oscillation monitoring device so as to realize the calculation, transmission, storage, packing and transmission of broadband phasors. However, unlike conventional phasor measurement devices (PMUs), which only need to calculate and process one fundamental phasor, wideband oscillation monitoring devices need to calculate and process a plurality of wideband phasor information, including fundamental, harmonic, and inter-harmonic. In addition, the new energy system often needs to monitor a plurality of lines at the same time, and under the condition that the hardware computing resources of the broadband oscillation monitoring device are certain, the situation that data packet loss exists in the broadband phasor data storage process, and even the device collapses is caused. Disclosure of Invention The application provides a broadband phasor data collection method of a new energy system, which aims to solve the problems that the data packet loss or device breakdown can be caused by the fact that a plurality of broadband phasor information needs to be calculated and processed under the condition of certain hardware calculation resources in the related technology, so that the normal work cannot be performed and the like. An embodiment of the first aspect of the application provides a broadband phasor data collection method of a new energy system, which is applied to any data concentrator in the new energy system, and comprises the following steps of receiving one or more broadband phasor data sent by a monitoring device or other data concentrators of any substation in the new energy system, identifying a head address of each quantity in each broadband phasor data, carrying out data combination on each broadband phasor data according to the head address of each quantity, determining a preset data frame format according to a preset protocol, packaging the combined data according to the preset data frame format to obtain packaged data, and sending the packaged data to one or more target master stations in the new energy system. Optionally, in an embodiment of the present application, the merging the data of each broadband phasor data according to the first address of each quantity includes matching a memory space pre-established in the data concentrator according to the first address of each quantity, and merging each quantity in each broadband phasor data into a corresponding memory space to realize the collection of the broadband phasor data. Optionally, in one embodiment of the present application, before matching the pre-established memory space in the data concentrator according to the head address of each quantity, the method comprises starting a command thread and a data thread, reading a data frame configuration file, calculating an actual capacity of the memory space according to the data frame configuration file, and establishing the memory space in the data concentrator based on the actual capacity. Optionally, in one embodiment of the present application, the wideband phasor data includes fundamental phasor data, harmonic phasor data, and inter-harmonic phasor data, and the preset rule is that phasors and analog quantities defined in a preset communication protocol are first expanded, so that the first expanded preset communication protocol supports transmission of preset frequency phasors and analog quantities, the inter-harmonic phasor data is transmitted by using the first expanded preset communication protocol, and analog quantities defined in the preset communication protocol are second expanded, so that the second expanded preset communication protocol is used for uploading modal data to a master station at intervals for a preset duration, and the second expanded preset communication protocol is used for transmitting the harmonic phasor data. Optionally, in one embodiment of the present application, the data concentrator communicates with the monitoring device of any substation in a multi-threaded manner. Optionally, in one embodiment of the present application, the data concentrator is capable of storing, processing and/or forwarding broadband oscillation information greater than or equal to a preset number of modes. The embodiment of the se