CN110930051A - Big data analysis-based resident demand response potential analysis system and method - Google Patents

Big data analysis-based resident demand response potential analysis system and method Download PDF

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CN110930051A
CN110930051A CN201911214069.3A CN201911214069A CN110930051A CN 110930051 A CN110930051 A CN 110930051A CN 201911214069 A CN201911214069 A CN 201911214069A CN 110930051 A CN110930051 A CN 110930051A
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刘向向
卢婕
严勤
周琪
李昊翔
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangxi Electric Power Co Ltd
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Abstract

The invention discloses a resident demand response potential analysis system and method based on big data analysis. The regional data acquisition system extracts power utilization data of the household electric meters of the users in the region and transmits the selected data to a next-stage data encryption transmission station; modeling by using a neural network system ELM in the data analysis processing station to obtain extracted data records; after multiple tests, the resident demand response potential can be analyzed, the analysis on the electricity utilization behavior of the user is completed, the refined management can be helped to be developed, the power supply company is helped to carry out peak staggering scheduling in the electricity utilization peak period, auxiliary decision information is provided for power grid planning, the time required by analysis is shortened, and the overall efficiency is improved.

Description

Big data analysis-based resident demand response potential analysis system and method
Technical Field
The invention relates to the technical field of electric power system analysis, in particular to a resident demand response potential analysis system and method based on big data analysis.
Background
With the development of economy in China, the electric energy consumption is increased rapidly, the peak-valley difference of a power grid is increased gradually, the load peak frequency is increased rapidly, and the problems of light abandonment, wind abandonment and the like caused by the randomness and the intermittent characteristics of new energy power generation bring challenges to the scheduling work of the power grid.
And at the resident user side, because the improvement of living standard, the reinforcing of environmental protection consciousness, a large amount of intelligent flexible equipment and novel energy storage equipment are popularized and used at resident family. In summer peak time, the air conditioner load ratio of a center city at the front line exceeds 40%, if the peak-off scheduling of the electricity peak time cannot be carried out according to the demands of residents, the normal electricity utilization demand of the whole city can be influenced, the electricity consumption capacity and the load regulation and control capacity of the residents are obviously improved, and the research on emerging demand response services at the power grid side and the resident user side has important significance.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a resident demand response potential analysis system and method based on big data analysis, which helps a power supply company to carry out peak-to-peak scheduling in a power utilization peak period, reduces the time required by analysis and improves the overall power utilization efficiency of a power grid.
In order to achieve the purpose, the invention adopts the following technical scheme:
a resident demand response potential analysis system based on big data analysis comprises a regional data acquisition system and is characterized in that the input end of the regional data acquisition system is connected with the output end of a user ammeter, the output end of the regional data acquisition system is connected with the input end of a data analysis processing station through a data encryption transmission station, a neural network system ELM is arranged in the data analysis processing station, and the outer side of the data analysis processing station is respectively connected with a control end and a monitoring end through transmission lines;
the regional data acquisition system is internally provided with a data extraction module, a data transmission module, a data analysis module and a data marking module, and is used for extracting user data within set time, marking according to the extracted user data and facilitating data extraction and comparison again;
the regional data acquisition system and the data encryption transmission station are arranged according to the number of users in a region and the area of the region, and a data encryption module is arranged in the data encryption transmission station;
the neural network system ELM can be used for classifying and fitting data and carrying out classification labeling on the extracted data;
the control end is provided with a password verification end and is used for controlling the whole system to work;
and the monitoring end is used for checking the working state and feedback information of the system.
A resident demand response potential analysis method based on big data analysis is characterized by comprising the following analysis steps:
1) the regional data acquisition system extracts power utilization data of user household electric meters in a region, selects an optimal feature set from the data features according to the power utilization requirements of users, and transmits the selected data to a next-stage data encryption transmission station;
2) the data encryption transmission station receives data transmitted by a regional data acquisition system in a region, classifies the data, and uniformly encrypts and transmits the data to the data analysis processing station;
3) modeling is carried out in the data analysis processing station by using a neural network system ELM, so that the characteristics of the electricity load curve of the residential user are extracted, the ELM network is trained, the load curve is classified, and the extracted data record is obtained;
4) and (3) the staff repeats the steps 1) to 3) through the control end control system, extracts and records at different time points according to the requirements, and checks the resident demand response potential by the monitoring end after comparing and analyzing the time data.
According to the invention, a neural network system ELM is adopted for modeling, the extracted feature set is analyzed and processed, different feature sets are extracted at different time points, input parameters are changed, the influence of different parameters on the performance of classification results is compared, the resident demand response potential can be obtained through analysis after multiple tests, the analysis on the power consumption behavior of a user is completed, the analysis result of the user behavior can help to develop refined management, a power supply company is helped to carry out peak-to-peak scheduling in the power consumption peak period, and auxiliary decision information is provided for power grid planning; the regional data acquisition system is adopted to extract different user data, the optimal feature set can be selected from the data features according to the power consumption requirements of users, meanwhile, the selected user marks the selected user, data extraction and comparison are convenient to carry out again, and the data encryption transmission station can transmit the data acquired by the regional data acquisition system in the region to the data analysis processing station for analysis and processing after unified integration and encryption, so that the time required by analysis is shortened, and the overall efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a resident demand response potential analysis system based on big data analysis according to the present invention;
FIG. 2 is a flow chart of the analysis steps of the present invention;
in the figure: 1. the system comprises a regional data acquisition system, 2 a user ammeter, 3 a data encryption transmission station, 4 a data analysis processing station, 5 a control end and 6 a monitoring end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 and 2, a resident demand response potential analysis system based on big data analysis comprises a regional data acquisition system 1, wherein the input end of the regional data acquisition system 1 is connected with the output end of a user ammeter 2, the output end of the regional data acquisition system 1 is connected with the input end of a data analysis processing station 4 through a data encryption transmission station 3, a neural network system ELM is arranged in the data analysis processing station 4, and the outer side of the data analysis processing station 4 is respectively connected with a control end 5 and a monitoring end 6 through transmission lines; the regional data acquisition system 1 is internally provided with a data extraction module, a data transmission module, a data analysis module and a data marking module, and the regional data acquisition system 1 is used for extracting user data within a set time, marking according to the extracted user data, and performing data extraction comparison again.
The number of the regional data acquisition system 1 and the number of the data encryption transmission station 3 are both set to be multiple and are set according to the number of users in a region and the area of the region, and a data encryption module is arranged inside the data encryption transmission station 3. The control end 5 adopts a PLC controller and is provided with a password verification end, the control end 5 is used for controlling the work permission of the whole system, and the monitoring end 6 is used for checking the work state and feedback information of the system.
When the regional data collection system is used, the regional data collection system 1 is adopted to begin 101 to extract different user electricity consumption data collection 102, the optimal characteristic set 103 can be selected according to the electricity consumption requirements of users according to data characteristics, meanwhile, the selected user marks the selected user, data extraction and comparison are facilitated again, the data encryption transmission station 3 normalizes characteristic values in different characteristics 104, collected data are uniformly integrated and encrypted and then are transmitted to the data analysis processing station 4 for analysis processing, the time required by analysis can be reduced, and the overall efficiency is improved.
A resident demand response potential analysis method based on big data analysis comprises the following analysis steps:
1) the regional data acquisition system 1 extracts power consumption data of household user electric meters 2 in a region, selects an optimal feature set from data features according to the power consumption requirements of users, and transmits the selected data to a next-stage data encryption transmission station 3;
2) the data encryption transmission station 3 receives data transmitted by a regional data acquisition system in a region, classifies the data, and uniformly encrypts and transmits the data to the data analysis processing station 4;
3) modeling is carried out in the data analysis processing station 4 by using a neural network system ELM, and the neural network system ELM can be used for classifying and fitting data and carrying out classification labeling on the extracted data;
the output function in the processing station 4 is expressed as follows:
Figure BDA0002298995030000031
wherein x is the input quantity of the neural network, i.e. the output quantity of the transmission station 3, f (-) is the activation function of the neural network, w is the weight between the input layer and the hidden layer, b is the node threshold of the hidden layer, β is the output quantity of the hidden layer, i.e. the connection weight between the hidden layer and the output layer, l is the number of the neurons, and y is the output quantity of the neural network, i.e. the output quantity of the processing station 4.
Specifically, a function f (-) meeting infinitesimal conditions is selected as an activation function of the hidden layer node, and a weight w between the input layer and the hidden layer and a threshold b of the hidden layer node are randomly set; determining the number of nodes of the hidden layer to obtain an output matrix H of the hidden layer; calculating the Moor Penrose generalized inverse of the hidden layer output matrix H by using a singular value decomposition method, and then calculating the output layer weight y to complete network training; the trained network is used for realizing classification of the electricity utilization behaviors of the users, if the output result of the ELM network is the same as the original label of the group of data, classification is considered to be correct, then the accuracy of classification of the training set and the test set is respectively calculated, the influence of different parameters on the performance of the classification result is compared by changing the input parameters of the algorithm, the resident demand response potential can be obtained through analysis after multiple tests, the feature extraction of the electricity utilization load curve of the resident users, the ELM network training and the classification of the load curve are realized, and the extracted data record is obtained.
4) The staff repeats the steps 1) to 3) through the control end 5 control system, extracts and records at different time points according to the requirements, compares and analyzes the time data, and then checks the resident demand response potential through the monitoring end 6.
Example (b): the neural network system ELM can be used for classifying and fitting data and carrying out classification labeling on extracted data.
Selecting a function f (-) meeting infinite and differentiable as an activation function of the hidden layer node, and randomly setting a weight w between an input layer and the hidden layer and a threshold b of the hidden layer node;
determining the number of nodes of the hidden layer, and combining the output quantity of the hidden layer to obtain a hidden layer output matrix H;
calculating the Moor Penrose generalized inverse of the output matrix H by using a singular value decomposition method, and then calculating the weight of an output layer to complete network training;
the trained network is used for realizing classification of the electricity utilization behaviors of the user, if the output result of the ELM network is the same as the original label of the group of data, the classification is considered to be correct, then the accuracy of classification of the training set and the test set is calculated respectively, the influence of different parameters on the performance of the classification result is compared by changing the input parameters of the algorithm, and the resident demand response potential can be obtained through analysis after multiple tests.
The specific analysis method steps of the system are shown in FIG. 2:
1. the method comprises the following steps that firstly 101, a regional data acquisition system 1 is adopted to extract electricity consumption data 102 of household electric meters of different users in a region, an optimal feature set 103 is selected from data features according to electricity consumption requirements of different users, and the selected data are transmitted to a next-stage data encryption transmission station 3;
2. the data encryption transmission station 3 receives data transmitted by the data acquisition systems 1 in a plurality of areas in the area, classifies different data and then uniformly encrypts the data, normalizes characteristic values in different characteristic sets 104, and transmits the characteristic values to the data analysis processing station 4;
3. modeling 105 by using a neural network system ELM in the data analysis processing station 4, realizing feature extraction of the electricity load curve of the residential user, ELM network training and load curve classification, and recording according to the extracted data;
4. the staff repeats the steps 1) to 3) through the PLC controller control system of the control end 5), and can extract records at different time points according to the demands, and after comparing and analyzing a plurality of time data 106, the monitoring end 6 can check the resident demand response potential, and the system analysis is finished 107. The invention adopts a neural network system ELM to carry out modeling, analyzes and processes the extracted feature set, changes input parameters by extracting different feature sets at different time points, compares the influence of different parameters on the performance of classification results, can analyze the resident demand response potential after a plurality of tests, completes the analysis of the power utilization behavior of a user, can help to develop refined management by the user behavior analysis result, can help a power supply company to carry out peak-to-peak scheduling in the power utilization peak period, and can provide auxiliary decision information for power grid planning for a long time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (2)

1. A resident demand response potential analysis system based on big data analysis comprises a regional data acquisition system and is characterized in that the input end of the regional data acquisition system is connected with the output end of a user ammeter, the output end of the regional data acquisition system is connected with the input end of a data analysis processing station through a data encryption transmission station, a neural network system ELM is arranged in the data analysis processing station, and the outer side of the data analysis processing station is respectively connected with a control end and a monitoring end through transmission lines;
the regional data acquisition system is internally provided with a data extraction module, a data transmission module, a data analysis module and a data marking module, and is used for extracting user data within set time, marking according to the extracted user data and facilitating data extraction and comparison again;
the regional data acquisition system and the data encryption transmission station are arranged according to the number of users in a region and the area of the region, and a data encryption module is arranged in the data encryption transmission station;
the neural network system ELM can be used for classifying and fitting data and carrying out classification labeling on the extracted data;
the control end is provided with a password verification end and is used for controlling the whole system to work;
and the monitoring end is used for checking the working state and feedback information of the system.
2. The method for analyzing the response potential of the demands of the residents based on the big data analysis as claimed in claim 1, wherein the analyzing steps are as follows:
1) the regional data acquisition system extracts power utilization data of user household electric meters in a region, selects an optimal feature set from the data features according to the power utilization requirements of users, and transmits the selected data to a next-stage data encryption transmission station;
2) the data encryption transmission station receives data transmitted by a regional data acquisition system in a region, classifies the data, and uniformly encrypts and transmits the data to the data analysis processing station;
3) modeling is carried out in the data analysis processing station by using a neural network system ELM, so that the characteristics of the electricity load curve of the residential user are extracted, the ELM network is trained, the load curve is classified, and the extracted data record is obtained;
4) and (3) the staff repeats the steps 1) to 3) through the control end control system, extracts and records at different time points according to the requirements, and checks the resident demand response potential by the monitoring end after comparing and analyzing the time data.
CN201911214069.3A 2019-12-02 2019-12-02 Big data analysis-based resident demand response potential analysis system and method Pending CN110930051A (en)

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CN112036934A (en) * 2020-08-14 2020-12-04 南方电网能源发展研究院有限责任公司 Quotation method for participation of load aggregators in demand response considering thermoelectric coordinated operation
CN113036763A (en) * 2021-05-24 2021-06-25 广东电网有限责任公司佛山供电局 Power demand response power supply method and device, electronic equipment and readable storage medium
CN113919594A (en) * 2021-11-18 2022-01-11 贵州电网有限责任公司 Demand response potential evaluation method based on deep forest
CN114069644A (en) * 2021-12-06 2022-02-18 国网山东省电力公司汶上县供电公司 Power demand response method, system, medium and equipment based on data matching algorithm

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CN110135761A (en) * 2019-05-27 2019-08-16 国网河北省电力有限公司沧州供电分公司 For power demand side response Load Regulation method of commerce, system and terminal device

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CN106204329A (en) * 2016-07-13 2016-12-07 张志华 A kind of intelligent grid load management system
CN106650797A (en) * 2016-12-07 2017-05-10 广东电网有限责任公司江门供电局 Distribution network electricity stealing suspected user intelligent recognition method based on integrated ELM (Extreme Learning Machine)
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Publication number Priority date Publication date Assignee Title
CN112036934A (en) * 2020-08-14 2020-12-04 南方电网能源发展研究院有限责任公司 Quotation method for participation of load aggregators in demand response considering thermoelectric coordinated operation
CN113036763A (en) * 2021-05-24 2021-06-25 广东电网有限责任公司佛山供电局 Power demand response power supply method and device, electronic equipment and readable storage medium
CN113919594A (en) * 2021-11-18 2022-01-11 贵州电网有限责任公司 Demand response potential evaluation method based on deep forest
CN114069644A (en) * 2021-12-06 2022-02-18 国网山东省电力公司汶上县供电公司 Power demand response method, system, medium and equipment based on data matching algorithm
CN114069644B (en) * 2021-12-06 2023-08-15 国网山东省电力公司汶上县供电公司 Power demand response method, system, medium and equipment based on data matching algorithm

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Application publication date: 20200327