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A non-intruding-type household-used electric load decomposition method and an apparatus

A technology of load decomposition and household electricity consumption, which is applied in the direction of circuit devices, measuring devices, electrical components, etc., and can solve the problem that the electrical load of electrical appliances cannot be decomposed and displayed

Inactive Publication Date: 2014-03-26
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The invention discloses a non-invasive household electrical load decomposition method, which solves the problem that the existing household smart meter cannot decompose and display the electrical load of all electrical appliances in the household

Method used

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  • A non-intruding-type household-used electric load decomposition method and an apparatus
  • A non-intruding-type household-used electric load decomposition method and an apparatus
  • A non-intruding-type household-used electric load decomposition method and an apparatus

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Experimental program
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Effect test

Embodiment 1

[0091] according to figure 2 , image 3 As shown; the unknown electrical appliance is connected to the electric energy metering chip through the measuring strip and the mutual inductance circuit, such as image 3 As shown, the analog current of the mutual inductance circuit is connected to the V3P and V3N pins of the electric energy metering chip, and the analog voltage of the mutual inductance circuit is connected to the V4P and V4N pins of the electric energy metering chip to realize the measurement of the position electrical load data by the electric energy metering chip. The user load bus also connects the corresponding analog current to the V1P and V1N pins of the electric energy metering chip through the mutual induction circuit, and connects the analog voltage to the V2P and V2N pins of the electric energy metering chip. The power quality chip ATT7022C is connected to the CS0, SCLK, DIN, and DOUT pins of the core processor S3C2440A through the four communication ports...

Embodiment 2

[0098] Step 1: Measure the load data of the user's home appliances

[0099] According to the statistical analysis and investigation of relevant departments, typical household appliances such as refrigerators, washing machines, water dispensers, air conditioners, and water heaters were selected. The load measurement is carried out by the power quality analyzer (model: MI209MI2192), and stored in the household appliance data set, the sampling frequency is f=50HZ, and the load waveform is as follows Figure 4 As shown, it can be seen that the load curves of different electrical appliances are very different, and the present invention decomposes the load curves just based on this difference. The steps are generic for different situations.

[0100] Situation 1 When the electrical appliance is turned on

[0101] Step 2: Collect and process the total load data according to the actual power consumption of the users. The total load curve is as follows: Figure 5 . Steps 3 to 5: Cal...

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Abstract

The invention discloses a non-intruding-type household-used electric load decomposition method and an apparatus. According to the non-intruding-type electric load decomposition method based on a system fitting algorithm, a household intelligent electric meter acquires electric appliance load data, and an optimal fitting algorithm obtains various optimal parameters, and finally decomposition of electrical loads can be realized. The starting time, the operation time and an operation mode of electric appliances can be accurately calculated, and accurate decomposition can be carried out on conditions of usage of electric appliances of a same kind. The electric load decomposition of the electrical appliances can be realized, and load information of each household electrical appliance can be obtained. Results of load decomposition can effectively guide changes of users' behaviors of using electricity, so that intelligentization of household energy saving plans can be promoted, and simultaneously data supports can be provided for electric power departments in the formulating of corresponding demand side management, and the household use of electricity changes is enabled to change towards a direction of being higher in energy saving and efficient degrees.

Description

technical field [0001] The invention provides a non-invasive household electric load decomposition method, and also discloses a device for realizing the method, which belongs to the technical field of power metering methods and devices. Background technique [0002] The closest existing technologies are two kinds of intrusive power load splitting method and non-intrusive load splitting method. [0003] 1) Intrusive load decomposition; this method is to install voltage and current sensors at the power ports of each household appliance to obtain the load data of household appliances in real time. The advantage is that the data obtained is relatively accurate; the disadvantage is that the price is high, the equipment is complicated, and the existing electric meter or smart electric meter cannot be used for low-rate sampling, so it is not suitable for popularization and application. [0004] It can be seen that the obvious disadvantages of intrusive load decomposition are: larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R11/48H02J13/00
CPCY02B70/30Y04S10/40Y04S20/242
Inventor 曲朝阳朱莉于华涛王蕾曲楠王敬东
Owner STATE GRID CORP OF CHINA
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