CN-122026500-A - Method, system and equipment for local regulation and control of distributed power access unit

CN122026500ACN 122026500 ACN122026500 ACN 122026500ACN-122026500-A

Abstract

The invention provides a method, a system and equipment for local regulation and control of a distributed power supply access unit, wherein the method comprises the following steps of S1, the distributed power supply access unit receives a control scheme of a concentrator, S2, the distributed power supply access unit processes the control scheme after successfully receiving the control scheme of the concentrator to generate a control instruction, S3, the distributed power supply access unit sends the control instruction to corresponding photovoltaic power generation equipment, and the photovoltaic power generation equipment receives and executes the control instruction. The invention realizes local regulation and control through the distributed power supply access unit, reduces the dependence on a centralized control system, reduces the risk of single-point faults, improves the stability and expandability of the system, can flexibly select different time points and parameters, generates an adaptive control instruction, and directly sends the adaptive control instruction to corresponding equipment for regulation and control, thereby greatly improving the execution efficiency and the anti-interference capability of the system.

Inventors

YU DEMING
Lv Yongdong
YANG ZHIMENG
HU TIANQI

Assignees

青岛乾程科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250123

Claims (10)

1. A method for local regulation of a distributed power access unit, the method comprising the steps of: Step S1, a distributed power supply access unit receives a control scheme of a concentrator, wherein the control scheme comprises the size of a maintenance file, the number of instruction frames, a file check code and a maintenance object identifier; step S2, after the distributed power supply access unit successfully receives a control scheme of the concentrator, the control scheme is processed to generate a personalized control instruction; And step S3, the distributed power supply access unit sends the control instruction to the corresponding photovoltaic power generation equipment, and the photovoltaic power generation equipment receives and executes the control instruction to maintain the constant power generation amount.
2. The method for local regulation and control of a distributed power supply access unit according to claim 1, wherein the distributed power supply access unit generating personalized control instructions comprises the steps of receiving real-time illumination intensity I (t), conversion efficiency eta and panel area A of a photovoltaic power generation device by the distributed power supply access unit, setting preset constant power generation amount P set , calculating dynamic adjustment factor k (t): k (t) =P set /P actual , wherein actual power generation amount 。
3. The method for local regulation of a distributed power access unit according to claim 1, wherein in step S1, after the distributed access unit successfully receives the control scheme, the distributed access unit sends a normal signal to the concentrator, if the distributed access unit does not receive the control scheme, the distributed access unit sends a failure signal to the concentrator, and the concentrator pauses sending after receiving the failure signal.
4. The method of local regulation of a distributed power access unit according to claim 1, wherein the step S2 includes: step S201, the concentrator splits the control scheme into a plurality of data frames for transmission, wherein each data frame comprises a frame number and a check code of the data frame; Step S202, after the distributed power access unit receives a data frame, calculating a check value of the data frame and comparing the check value with the check code; In step S203, if the check value is consistent with the check code, the distributed power access unit requests the concentrator to continue transmitting the next frame, and if the check value is inconsistent with the check code, the distributed power access unit notifies the concentrator to retransmit the data frame.
5. The method for local regulation of a distributed power supply access unit according to claim 2, wherein the distributed power supply access unit adjusts k (t) in real time, and the photovoltaic power generation device receives and dynamically adjusts the output so that the adjusted power generation amount Approaching P set .
6. The method of local regulation of a distributed power access unit according to claim 1, wherein the step S3 includes: step S301, after receiving the control instruction, the photovoltaic power generation device evaluates whether the control instruction can be executed, and feeds back the control instruction to the distributed power access unit; Step S302, the distributed access unit splits a control instruction into a plurality of data frames, each data frame comprises a number and a check code, and each data frame is sent to photovoltaic power generation equipment after being checked; Step S303, after receiving all the control instructions, the photovoltaic power generation device performs overall verification, and if the verification value is consistent with the verification code sent by the distributed power access unit, the file is considered to be successfully received, and a reception success signal is sent to the distributed power access unit.
7. The method of local regulation of a distributed power access unit of claim 6, wherein the single data frame verification process comprises: After receiving a data frame sent by a distributed power access unit, photovoltaic power generation equipment acquires a check code crc1 in the data frame; the photovoltaic power generation equipment calculates a check value crc2 according to the data part in the data frame, and compares the crc1 with the crc2; If it is The photovoltaic power generation equipment sends a receiving success signal to the distributed power access unit, if The photovoltaic power generation device sends a reception failure signal to the distributed power access unit, and the distributed power access unit resends the data frame.
8. The system is characterized by comprising a distributed power supply access unit, a concentrator and photovoltaic power generation equipment, wherein the concentrator generates and sends a control scheme to the distributed power supply access unit, the distributed power supply access unit is communicated with the concentrator, receives the control scheme and sends a control instruction to the photovoltaic power generation equipment, and the photovoltaic power generation equipment is communicated with the distributed power supply access unit, receives and executes the control instruction and feeds back the result to the distributed power supply access unit.
9. A distributed power access unit local regulation system according to claim 8 wherein local regulation is performed using the method of any one of claims 1 to 6.
10. An electronic device comprising a memory for storing processor-executable instructions and a processor for reading the executable instructions from the memory and executing the instructions using the method of any of claims 1-7.

Description

Method, system and equipment for local regulation and control of distributed power access unit Technical Field The invention belongs to the field of photovoltaic power generation equipment control, and particularly relates to a method, a system and equipment for local regulation and control of a distributed power supply access unit. Background With the continuous progress of the photovoltaic power generation technology and the reduction of the cost, photovoltaic power generation equipment has been widely popularized and applied, however, photovoltaic power generation is influenced by various factors such as weather conditions, equipment performance and the like, and has great volatility and uncertainty, so that the regulation and control of the photovoltaic power generation equipment is particularly important. At present, the regulation and control of photovoltaic power generation mainly depend on cloud power generation capacity prediction and a mode of generating control commands by an algorithm. Although accurate regulation and control can be realized, the mode needs to rely on a communication network for remote transmission, and because photovoltaic power generation equipment is often installed in a place with less ideal communication environments such as remote mountain areas and user roofs, the communication network is easy to be interfered and limited, so that the transmission delay or loss of control commands is caused, and the accuracy and timeliness of regulation and control are affected. Disclosure of Invention In order to solve the problems in the prior art, the present invention provides a method for locally controlling a distributed power access unit, which includes the following steps: Step S1, a distributed power supply access unit receives a control scheme of a concentrator, wherein the control scheme comprises the size of a maintenance file, the number of instruction frames, a file check code and a maintenance object identifier; step S2, after the distributed power supply access unit successfully receives a control scheme of the concentrator, the control scheme is processed to generate a personalized control instruction; And step S3, the distributed power supply access unit sends the control instruction to the corresponding photovoltaic power generation equipment, and the photovoltaic power generation equipment receives and executes the control instruction to maintain the constant power generation amount. On the basis of the scheme, the distributed power supply access unit generates personalized control instructions, wherein the distributed power supply access unit receives real-time illumination intensity I (t), conversion efficiency eta and panel area A of the photovoltaic power generation equipment, preset constant power generation amount P set is set, dynamic adjustment factor k (t): k (t) =P set/Pactual is calculated, and actual power generation amount is calculated。 Based on the above scheme, in step S1, after the distributed access unit successfully receives the control scheme, the distributed access unit sends a normal signal to the concentrator, and if the distributed access unit does not receive the control scheme, the distributed access unit sends a failure signal to the concentrator, and the concentrator pauses sending after receiving the failure signal. On the basis of the above scheme, the step S2 includes: step S201, the concentrator splits the control scheme into a plurality of data frames for transmission, wherein each data frame comprises a frame number and a check code of the data frame; Step S202, after the distributed power access unit receives a data frame, calculating a check value of the data frame and comparing the check value with the check code; In step S203, if the check value is consistent with the check code, the distributed power access unit requests the concentrator to continue transmitting the next frame, and if the check value is inconsistent with the check code, the distributed power access unit notifies the concentrator to retransmit the data frame. Based on the scheme, the distributed power supply access unit adjusts k (t) in real time, and the photovoltaic power generation equipment receives and dynamically adjusts output to enable the adjusted generated energy to be generatedApproaching P set. On the basis of the above scheme, the step S3 includes: step S301, after receiving the control instruction, the photovoltaic power generation device evaluates whether the control instruction can be executed, and feeds back the control instruction to the distributed power access unit; Step S302, the distributed access unit splits a control instruction into a plurality of data frames, each data frame comprises a number and a check code, and each data frame is sent to photovoltaic power generation equipment after being checked; Step S303, after receiving all the control instructions, the photovoltaic power generation device performs overall verification, and if the