CN108594041B - Detection platform for non-invasive household power load monitoring device - Google Patents
Detection platform for non-invasive household power load monitoring device Download PDFInfo
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- CN108594041B CN108594041B CN201810365519.8A CN201810365519A CN108594041B CN 108594041 B CN108594041 B CN 108594041B CN 201810365519 A CN201810365519 A CN 201810365519A CN 108594041 B CN108594041 B CN 108594041B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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Abstract
The invention discloses a detection platform for a non-invasive household power load monitoring device, which comprises a programmable power supply, a first isolation transformer, a full-bridge rectification circuit, an inverter circuit, a first resistor, a second isolation transformer, an analog voltage sampling circuit, an analog current sampling circuit, a signal acquisition and processing module, a control and analysis platform, a control and driving circuit, a human-computer interaction interface and a non-invasive household power load monitoring device, wherein the programmable power supply is connected with the first isolation transformer; the invention can simulate the household power load through any power utilization combination of the virtual household appliances according to the power utilization characteristics of various household appliances, provides the corresponding detection operation environment of the non-invasive household power load monitoring device, and can automatically analyze the correctness of the identification result of the non-invasive household power load monitoring device.
Description
Technical Field
The invention belongs to the technical field of detection of power monitoring devices, and particularly relates to a detection platform for a non-invasive household power load monitoring device.
Background
With the continuous improvement of the requirements of people on living quality, smart homes are more and more concerned, the total electricity consumption of the smart homes is increasing year by year, and the smart homes will become important electricity utilization objects of an electric power system in future. The intelligent household power utilization characteristic is that the power utilization of each household appliance can be controlled, and therefore the possibility is provided for intelligent household power load monitoring and power utilization detail management and control. The traditional household power load monitoring usually adopts an intrusive method, namely, monitoring devices are installed on all household appliances of a user to record the power utilization condition of the household appliances. The invasive method has accurate and reliable monitoring data, but has high implementation cost and is difficult to widely popularize. The non-invasive household power load monitoring technology is a brand-new load monitoring technology, and decomposes the total power load information of a user into the power consumption information of each household appliance through load identification, calculation and analysis, so as to obtain the power consumption information of each household appliance, such as the energy consumption, the power consumption law and the like. The non-invasive device can monitor the power loads of all household appliances only by being installed at the electricity utilization entrance of a user, and compared with the traditional invasive load monitoring device, the non-invasive device has the characteristics of simple installation, low cost and good safety, so the non-invasive device is more and more concerned by people and becomes one of the development trends of household power load monitoring in the future.
The non-invasive household power load monitoring device usually measures the load characteristics of each household appliance in advance, extracts and identifies characteristic values according to the load characteristics, and then realizes the non-invasive household power load identification function by using a load identification algorithm. For the research of the non-invasive load identification algorithm, at present, a lot of patents and literature reports exist at home and abroad, and the more common non-invasive load identification algorithm includes a load identification algorithm based on a neural network, a load identification algorithm based on a decision tree, a load identification algorithm based on a weighted Euclidean distance and the like. The method can preliminarily verify the effectiveness of the load identification algorithm, but cannot carry out integral detection on the performance of a non-invasive household power load monitoring device. The other direct and effective method is to perform physical verification, namely, the actual household power environment of various power utilization combinations of the household appliances is provided by controlling the on-off operation of the plurality of household appliances at the same time, so that the performance of the non-invasive household power load monitoring device can be detected. Therefore, the detection platform for the non-invasive household power load monitoring device is provided, the detection platform can simulate household power load through any power utilization combination of household appliances according to power utilization characteristics of various household appliances, and on the basis, simulated voltage and simulated current are generated to provide a corresponding detection operation environment for the non-invasive household power load monitoring device. Meanwhile, the performance of the non-invasive household power load monitoring device can be judged by analyzing according to the set household power load and the monitoring result of the non-invasive household power load monitoring device, and the detection platform provides an effective experimental means for the research of the non-invasive household power load monitoring device. At present, no patent or literature report exists on such a detection platform for a non-invasive household power load monitoring device.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the platform can simulate the household power load through any power utilization combination of the virtual household appliances according to the power utilization characteristics of various household appliances, provides a corresponding detection operation environment of the non-invasive household power load monitoring device, and can automatically analyze the correctness of the identification result of the non-invasive household power load monitoring device.
The technical scheme of the invention is as follows:
a detection platform for a non-invasive household power load monitoring device comprises a programmable power supply, a first isolation transformer, a full-bridge rectification circuit, an inverter circuit, a first resistor, a second isolation transformer, an analog voltage sampling circuit, an analog current sampling circuit, a signal acquisition and processing module, a control and analysis platform, a control and driving circuit, a human-computer interaction interface and the non-invasive household power load monitoring device; the inverter circuit consists of a first capacitor, a second capacitor, a first power switch, a second power switch, a first freewheeling diode, a second freewheeling diode, an inductor and a third capacitor; the analog voltage sampling circuit consists of a second resistor, a third resistor and a fourth capacitor; the analog current sampling circuit consists of a fourth resistor, a fifth resistor, a sixth resistor, a fifth capacitor and a sixth capacitor; one end of the programmable power supply is respectively connected with a primary side homonymous end of the first isolation transformer and a primary side homonymous end of the second isolation transformer, and the other end of the programmable power supply is respectively connected with a primary side non-homonymous end of the first isolation transformer and a primary side non-homonymous end of the second isolation transformer; the homonymous terminal and the non-homonymous terminal of the secondary side of the first isolation transformer are respectively connected with two input ends of a full-bridge rectification circuit, the positive output end of the full-bridge rectification circuit is respectively connected with one end of a first capacitor, the collector of a first power switch and the cathode of a first fly-wheel diode, the negative output end of the full-bridge rectification circuit is respectively connected with one end of a second capacitor, the emitter of a second power switch and the anode of a second fly-wheel diode, the other end of the first capacitor is respectively connected with the other end of the second capacitor and one end of an inductor, the emitter of the first power switch is respectively connected with the collector of the second power switch, the anode of the first fly-wheel diode, the cathode of the second fly-wheel diode, one end of a third capacitor, the homonymous terminal of the secondary side of the second isolation transformer, one end of a second resistor, one end of a fourth resistor and one end of a fifth resistor, the other end of the inductor is respectively, the other end of the first resistor is connected with a live wire output end of the non-invasive household power load monitoring device; the non-homonymous terminal of the secondary side of the second isolation transformer is respectively connected with one end of a fourth capacitor, one end of a third resistor, one end of an analog voltage sampling port of a signal acquisition and processing module, the zero line input end and the potential reference end of a non-invasive household power load monitoring device, the other end of the second resistor is respectively connected with the other end of the fourth capacitor, the other end of the third resistor and the other end of the analog voltage sampling signal port of the signal acquisition and processing module, the other end of the fourth resistor is respectively connected with one end of a sixth resistor and the live wire input end of the non-invasive household power load monitoring device, the other end of the fifth resistor is respectively connected with one end of a fifth capacitor and one end of the analog current sampling signal port of the signal acquisition and processing module, the other end of the sixth resistor is respectively connected with one end of the sixth capacitor and the other end of the analog current sampling signal port of the signal acquisition and processing module, the other end of the fifth capacitor is connected with the other end of the sixth capacitor and the potential reference end respectively; the fourth capacitor, the second resistor and the third resistor form a voltage division circuit and output an analog voltage sampling signal; the fifth resistor, the sixth resistor, the fifth capacitor and the sixth capacitor form an anti-aliasing filter circuit, and the anti-aliasing filter circuit differentially outputs a voltage signal generated when the analog current flows through the fourth resistor; setting household power voltage and selecting a simulated household power combination on a human-computer interaction interface, sending the set household power voltage and the selected simulated household power combination information to a control and analysis platform, sending the set household power voltage information to a programmable power supply by the control and analysis platform, outputting the simulated voltage by the programmable power supply through a second isolation transformer, generating target power current data by the control and analysis platform according to the selected simulated household power combination and the set household power voltage information, sending the target power current data to a control and drive circuit by the control and analysis platform, controlling the analog current of an output port of an inverter circuit by the control and drive circuit according to the target power current data, and respectively adding the analog voltage and the analog current to a voltage and current input port of a non-invasive household power load monitoring device so as to detect the performance of the non-invasive household power load monitoring device, the signal acquisition and processing module is used for conditioning and carrying out analog-to-digital conversion on output signals of the analog current sampling circuit and the analog voltage sampling circuit, corresponding digital signals are input into the control and analysis platform and the control and drive circuit, the control and drive circuit is used for carrying out closed-loop control on analog current by using analog current sampling digital signals, and the control and analysis platform is used for reading in a load monitoring result of the non-invasive household power load monitoring device through the communication interface; and the control and analysis platform compares the obtained analog voltage and analog current digital signals with the received identification result of the non-invasive household power load monitoring device according to the set power utilization combination of the analog household appliances to verify the operation performance of the non-invasive household power load monitoring device, and simultaneously sends the analog voltage, the analog current digital signals, the received identification result of the non-invasive household power load monitoring device and the verification result to the human-computer interaction interface for checking.
Preferably, the first resistor is formed by connecting five power resistors with the precision of 0.05% and the resistance of 5 Ω and the maximum power of 130W in parallel, the second resistor is formed by connecting five pure-resistance precision resistors with the precision of 0.05% and the resistance of 200K Ω in series, the third resistor, the fifth resistor and the sixth resistor are all pure-resistance precision resistors with the precision of 0.05% and the resistance of 1K Ω, and the fourth resistor is a manganin resistor with the precision of 0.1%.
Preferably, the inductor is a manganese zinc inductor with an inductance value of 1.5mH, the first capacitor and the second capacitor are electrolytic capacitors with a capacitance value of 1000 muF, the third capacitor is a CBB capacitor with a capacitance value of 16.8 muF, and the fourth capacitor, the fifth capacitor and the sixth capacitor are ceramic capacitors with a capacitance value of 33 nF.
Preferably, the first power switch and the second power switch both use an N-channel MOSFET power switch tube with a maximum allowable voltage of 500V and a maximum allowable current of 25A, and the full-bridge rectifier circuit uses a bridge rectifier stack with a maximum allowable voltage of 1000V and a maximum allowable current of 30A.
Preferably, the first isolation transformer is an isolation transformer with a rated capacity of 3kVA and a transformation ratio of 11:3, and the second isolation transformer is an isolation transformer with a rated capacity of 0.5kVA and a transformation ratio of 1: 1.
Preferably, the analog voltage generated by the platform is an alternating voltage of 220V/50 Hz.
The detection platform for the non-invasive household power load monitoring device is used for detecting the performance of the single-phase non-invasive household power load monitoring device with the monitoring power of 10W to 5kW, the maximum frequency of current harmonics of 9 times, the power consumption voltage range of 180V to 250V and the frequency of 50Hz or 60 Hz. The detection platform can simulate the electricity utilization characteristics of various household appliances, can be used for randomly combining the electricity utilization of the household appliances, simultaneously generates corresponding analog voltage and analog current for detecting the performance of the non-invasive household power load monitoring device, and is used for controlling the analog voltage at a level of 1, controlling the analog current at a level of 1 and detecting the electricity utilization load at a level of 3.
The invention brings the following benefits:
(1) a detection platform for a non-invasive household power load monitoring device mainly comprises a programmable power supply, a full-bridge rectification circuit, an inverter circuit, an analog current sampling circuit, an analog voltage sampling circuit, a signal acquisition and processing module, a control and analysis platform, a control and drive circuit and the non-invasive household power load monitoring device to be detected, and the platform can simulate the actual household power environment by generating analog voltage and analog current and provides a reliable experimental platform for the research and performance verification of the non-invasive household power load monitoring device;
(2) the platform can set the power combination of any household appliance, generate corresponding household power load data, and generate analog voltage and analog current according to the household power load data, so that the set power environment of the household power load is actually simulated for the non-invasive household power load monitoring device to use;
(3) the platform has various current household appliance power load characteristic data, and can supplement newly appeared household appliance power load characteristic data at any time, so the adaptability is strong;
(4) the platform is small in occupied area and energy consumption, and provides convenience for research and verification of the non-invasive household power load monitoring device.
Drawings
FIG. 1 is a block diagram of a testing platform for a non-intrusive home electrical load monitoring device;
in the figure: the system comprises a programmable power supply 1, a first isolation transformer 2, a full-bridge rectification circuit 3, an inverter circuit 4, a first resistor 5, a second isolation transformer 6, an analog voltage sampling circuit 7, an analog current sampling circuit 8, a signal acquisition and processing module 9, a control and analysis platform 10, a control and driving circuit 11, a human-computer interaction interface 12, a non-invasive household power load monitoring device 13, a first capacitor 14, a second capacitor 15, a first power switch 16, a second power switch 17, a first freewheeling diode 18, a second freewheeling diode 19, an inductor 20, a third capacitor 21, a second resistor 22, a third resistor 23, a fourth capacitor 24, a fourth resistor 25, a fifth resistor 26, a sixth resistor 27, a fifth capacitor 28 and a sixth capacitor 29.
Detailed Description
A detection platform for a non-invasive household power load monitoring device comprises a programmable power supply 1, a first isolation transformer 2, a full-bridge rectification circuit 3, an inverter circuit 4, a first resistor 5, a second isolation transformer 6, an analog voltage sampling circuit 7, an analog current sampling circuit 8, a signal acquisition and processing module 9, a control and analysis platform 10, a control and drive circuit 11, a human-computer interaction interface 12 and a non-invasive household power load monitoring device 13; the inverter circuit 4 consists of a first capacitor 14, a second capacitor 15, a first power switch 16, a second power switch 17, a first freewheeling diode 18, a second freewheeling diode 19, an inductor 20 and a third capacitor 21; the analog voltage sampling circuit 7 consists of a second resistor 22, a third resistor 23 and a fourth capacitor 24; the analog current sampling circuit 8 consists of a fourth resistor 25, a fifth resistor 26, a sixth resistor 27, a fifth capacitor 28 and a sixth capacitor 29; one end of the programmable power supply 1 is respectively connected with a primary side homonymous end of the first isolation transformer 2 and a primary side homonymous end of the second isolation transformer 6, and the other end of the programmable power supply 1 is respectively connected with a primary side non-homonymous end of the first isolation transformer 2 and a primary side non-homonymous end of the second isolation transformer 6; the secondary side dotted terminal and the non-dotted terminal of the first isolation transformer 2 are respectively connected with two input terminals of a full-bridge rectification circuit 3, the positive output terminal of the full-bridge rectification circuit 3 is respectively connected with one end of a first capacitor 14, the collector of a first power switch 16 and the cathode of a first freewheeling diode 18, the negative output terminal of the full-bridge rectification circuit 3 is respectively connected with one end of a second capacitor 15, the emitter of a second power switch 17 and the anode of a second freewheeling diode 19, the other end of the first capacitor 14 is respectively connected with the other end of the second capacitor 15 and one end of an inductor 20, the emitter of the first power switch 16 is respectively connected with the collector of the second power switch 17, the anode of the first freewheeling diode 18, the cathode of the second freewheeling diode 19, one end of a third capacitor 21, the secondary side dotted terminal of the second isolation transformer 2, one end of a second resistor 22, one end of a fourth resistor 25 and one end of a fifth resistor 26, the other end of the inductor 20 is connected with the other end of the third capacitor 21 and one end of the first resistor 5 respectively, and the other end of the first resistor 5 is connected with the live wire output end of the non-invasive home power load monitoring device 13; the secondary side non-dotted terminal of the second isolation transformer 6 is respectively connected to one terminal of a fourth capacitor 24, one terminal of a third resistor 23, one terminal of an analog voltage sampling port of the signal acquisition and processing module 9, a zero line input terminal and a potential reference terminal of the non-invasive household power load monitoring device 13, the other terminal of the second resistor 22 is respectively connected to the other terminal of the fourth capacitor 24, the other terminal of the third resistor 23 and the other terminal of the analog voltage sampling signal port of the signal acquisition and processing module 9, the other terminal of the fourth resistor 25 is respectively connected to one terminal of a sixth resistor 27 and a live line input terminal of the non-invasive household power load monitoring device 13, the other terminal of the fifth resistor 26 is respectively connected to one terminal of a fifth capacitor 28 and one terminal of the analog current sampling signal port of the signal acquisition and processing module 9, the other terminal of the sixth resistor 27 is respectively connected to one terminal of a sixth capacitor 29 and the other terminal of the analog current sampling signal port of the signal acquisition and processing module 9 The other end of the fifth capacitor 28 is connected with the other end of the sixth capacitor 29 and the potential reference end respectively; the fourth capacitor 24, the second resistor 22 and the third resistor 23 form a voltage division circuit, and output an analog voltage sampling signal; the fifth resistor 26, the sixth resistor 27, the fifth capacitor 28 and the sixth capacitor 29 form an anti-aliasing filter circuit, and the anti-aliasing filter circuit differentially outputs a voltage signal generated when an analog current flows through the fourth resistor 25; setting household electricity voltage and selecting a simulated household electrical appliance electricity combination on a human-computer interaction interface 12, sending the set household electricity voltage and the selected simulated household electrical appliance electricity combination information to a control and analysis platform 10, sending the set household electricity voltage information to a program control power supply 1 by the control and analysis platform 10, outputting the simulated voltage by the program control power supply 1 through a second isolation transformer 2, generating target electricity current data by the control and analysis platform 10 according to the selected simulated household electrical appliance electricity combination and the set household electricity voltage information, sending the target electricity current data to a control and drive circuit 11 by the control and analysis platform 10, controlling the simulated current of an output port of an inverter circuit 4 by the control and drive circuit 11 according to the target electricity current data, and respectively adding the simulated voltage and the simulated current to a voltage and current input port of a non-invasive household electrical load monitoring device 13, the system is used for detecting the performance of a non-invasive household power load monitoring device 13, the signal acquisition and processing module 9 is used for carrying out signal conditioning and analog-to-digital conversion on output signals of the analog current sampling circuit 8 and the analog voltage sampling circuit 7, corresponding digital signals are input into the control and analysis platform 10 and the control and drive circuit 11, the control and drive circuit 11 carries out closed-loop control on analog current by using analog current sampling digital signals, and the control and analysis platform 10 reads in a load monitoring result of the non-invasive household power load monitoring device 13 through a communication interface; the control and analysis platform 10 compares the set power utilization combination of the simulated household appliances and the obtained simulated voltage and simulated current digital signals with the received identification result of the non-invasive household power load monitoring device 13 to verify the operation performance of the non-invasive household power load monitoring device 13, and simultaneously the control and analysis platform 10 sends the simulated voltage, the simulated current digital signals, the received identification result of the non-invasive household power load monitoring device 13 and the verification result to the human-computer interaction interface 12 for checking.
The specific design parameters of the embodiment are as follows:
the invention relates to a detection platform for a non-invasive household power load monitoring device, which is used for detecting the performance of a single-phase non-invasive household power load monitoring device 13 with the power of 10W to 5kW, the maximum frequency of current harmonics of 9 times, the range of voltage consumption of 180V to 250V and the frequency of 50Hz, wherein a first resistor 5 is formed by connecting five power resistors with the resistance value of 5 omega and the maximum power of 130W in parallel and the precision of 0.05 percent, a second resistor 22 is formed by connecting five pure-resistance precision resistors with the resistance value of 200K omega in series, a third resistor 23, a fifth resistor 26 and a sixth resistor 27 are all pure-resistance precision resistors with the resistance value of 1K omega and the precision of 0.05 percent, a fourth resistor 25 is an manganese copper resistor with the resistance value of 1m omega and the precision of 0.1 percent, a first inductor 20 is a manganese zinc inductor with the precision of 1.5mH, and a first capacitor 14 and a second capacitor 15 are all electrolytic capacitors with the capacitance value of 1000 muF, the third capacitor 21 adopts a CBB capacitor with the capacitance value of 16.8 muF, and the fourth capacitor 24, the fifth capacitor 28 and the sixth capacitor 29 all adopt ceramic capacitors with the capacitance value of 33 nF; the first power switch 16 and the second power switch 17 both adopt MOSFET power switch tubes with the model number of 2SK2372 and containing freewheeling diodes inside, and the full-bridge rectification circuit 3 adopts a rectifier bridge stack with the model number of GBJ 2510; the first isolation transformer 2 adopts an isolation transformer with the capacity of 3kVA and the transformation ratio of 11:3, and the second isolation transformer 6 adopts an isolation transformer with the capacity of 0.5kVA and the transformation ratio of 1: 1; the control and analysis platform 10 and the control and driving system 11 both use an STM32F103RCT6 micro-processing chip for operation and control, and the control and driving system 11 uses IR2110L4 driving chip to drive the first power switch 16 and the second power switch 17.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
It should be understood that: the above-mentioned embodiments are merely illustrative of the present invention, not restrictive, and any invention which does not depart from the spirit and scope of the present invention will fall within the protection scope of the present invention.
Claims (4)
1. A detection platform for a non-invasive household power load monitoring device comprises a programmable power supply (1), a first isolation transformer (2), a full-bridge rectification circuit (3), an inverter circuit (4), a first resistor (5), a second isolation transformer (6), an analog voltage sampling circuit (7), an analog current sampling circuit (8), a signal acquisition and processing module (9), a control and analysis platform (10), a control and driving circuit (11), a human-computer interaction interface (12) and a non-invasive household power load monitoring device (13); the inverter circuit (4) consists of a first capacitor (14), a second capacitor (15), a first power switch (16), a second power switch (17), a first freewheeling diode (18), a second freewheeling diode (19), an inductor (20) and a third capacitor (21); the analog voltage sampling circuit (7) consists of a second resistor (22), a third resistor (23) and a fourth capacitor (24); the analog current sampling circuit (8) consists of a fourth resistor (25), a fifth resistor (26), a sixth resistor (27), a fifth capacitor (28) and a sixth capacitor (29); one end of the programmable power supply (1) is respectively connected with a primary side homonymous end of the first isolation transformer (2) and a primary side homonymous end of the second isolation transformer (6), and the other end of the programmable power supply (1) is respectively connected with a primary side non-homonymous end of the first isolation transformer (2) and a primary side non-homonymous end of the second isolation transformer (6); the dotted terminal and the non-dotted terminal of the secondary side of the first isolation transformer (2) are respectively connected with two input ends of a full-bridge rectification circuit (3), the positive output end of the full-bridge rectification circuit (3) is respectively connected with one end of a first capacitor (14), the collector of a first power switch (16) and the cathode of a first freewheeling diode (18), the negative output end of the full-bridge rectification circuit (3) is respectively connected with one end of a second capacitor (15), the emitter of a second power switch (17) and the anode of a second freewheeling diode (19), the other end of the first capacitor (14) is respectively connected with the other end of the second capacitor (15) and one end of an inductor (20), the emitter of the first power switch (16) is respectively connected with the collector of the second power switch (17), the anode of the first freewheeling diode (18), the cathode of the second freewheeling diode (19), one end of a third capacitor (21), The secondary side dotted terminal of the second isolation transformer (2), one end of the second resistor (22), one end of the fourth resistor (25) and one end of the fifth resistor (26) are connected, the other end of the inductor (20) is respectively connected with the other end of the third capacitor (21) and one end of the first resistor (5), and the other end of the first resistor (5) is connected with the live wire output end of the non-invasive home power load monitoring device (13); the secondary side non-dotted terminal of the second isolation transformer (6) is respectively connected with one end of a fourth capacitor (24), one end of a third resistor (23), one end of an analog voltage sampling port of a signal acquisition and processing module (9), the zero line input terminal and the potential reference terminal of a non-invasive household power load monitoring device (13), the other end of a second resistor (22) is respectively connected with the other end of the fourth capacitor (24), the other end of the third resistor (23) and the other end of the analog voltage sampling signal port of the signal acquisition and processing module (9), the other end of the fourth resistor (25) is respectively connected with one end of a sixth resistor (27) and the live wire input terminal of the non-invasive household power load monitoring device (13), the other end of a fifth resistor (26) is respectively connected with one end of a fifth capacitor (28) and one end of the analog current sampling signal port of the signal acquisition and processing module (9), the other end of the sixth resistor (27) is respectively connected with one end of a sixth capacitor (29) and the other end of an analog current sampling signal port of the signal acquisition and processing module (9), and the other end of the fifth capacitor (28) is respectively connected with the other end of the sixth capacitor (29) and a potential reference end; a fourth capacitor (24), a second resistor (22) and a third resistor (23) form a voltage division circuit and output an analog voltage sampling signal; the fifth resistor (26), the sixth resistor (27), the fifth capacitor (28) and the sixth capacitor (29) form an anti-aliasing filter circuit, and the anti-aliasing filter circuit differentially outputs a voltage signal generated when the analog current flows through the fourth resistor (25); setting household electricity voltage and selecting a simulated household electrical appliance electricity combination on a man-machine interaction interface (12), sending the set household electricity voltage and the selected simulated household electrical appliance electricity combination information to a control and analysis platform (10), sending the set household electricity voltage information to a program control power supply (1) by the control and analysis platform (10), outputting the simulated voltage by the program control power supply (1) through a second isolation transformer (2), generating target electricity current data by the control and analysis platform (10) according to the selected simulated household electrical appliance electricity combination and the set household electricity voltage information, sending the target electricity current data to a control and drive circuit (11) by the control and analysis platform (10), controlling the simulated current of an output port of an inverter circuit (4) according to the target electricity current data by the control and drive circuit (11), and respectively adding the simulated voltage and the simulated current to voltage and current input ends of a non-invasive household electrical load monitoring device (13) The system comprises a port, a signal acquisition and processing module (9), a control and analysis platform (10) and a control and drive circuit (11), wherein the port is used for detecting the performance of a non-invasive household power load monitoring device (13), the signal acquisition and processing module (9) is used for carrying out signal conditioning and analog-to-digital conversion on output signals of an analog current sampling circuit (8) and an analog voltage sampling circuit (7), corresponding digital signals are input into the control and analysis platform (10) and the control and drive circuit (11), the control and drive circuit (11) carries out closed-loop control on analog current by using analog current sampling digital signals, and the control and analysis platform (10) reads in a load monitoring result of the non-invasive household power load monitoring device (; the control and analysis platform (10) compares the obtained analog voltage and analog current digital signals with the received identification result of the non-invasive household power load monitoring device (13) according to the set power utilization combination of the analog household appliances, verifies the operation performance of the non-invasive household power load monitoring device (13), and simultaneously sends the analog voltage, the analog current digital signals, the received identification result of the non-invasive household power load monitoring device (13) and the verification result to the man-machine interaction interface (12) for viewing.
2. The detection platform for the non-invasive home electrical load monitoring device according to claim 1, wherein the programmable power supply (1) is capable of outputting 50Hz and 60Hz alternating voltages to simulate electrical environments of home electrical loads with different operating frequencies.
3. The detection platform for the non-invasive household power load monitoring device according to claim 1, wherein the first resistor (5) is formed by connecting five power resistors with the resistance of 5 Ω and the maximum power of 130W in parallel and the precision of 0.05%, the second resistor (22) is formed by connecting five pure-resistance precision resistors with the resistance of 200K Ω and the precision of 0.05%, the third resistor (23), the fifth resistor (26) and the sixth resistor (27) are all pure-resistance precision resistors with the resistance of 1K Ω and the precision of 0.05%, the fourth resistor (25) is a manganin resistor with the resistance of 1m Ω and the precision of 0.1%, the inductor (20) is a manganin inductor with the inductance of 1.5mH, the first capacitor (14) and the second capacitor (15) are all electrolytic capacitors with the capacitance of 1000 μ F, the third capacitor (21) is a CBB capacitor with the capacitance of 16.8 μ F, the fourth capacitor (24), the fifth capacitor (28) and the sixth capacitor (29) are ceramic capacitors with the capacitance value of 33 nF.
4. The detection platform for the non-invasive household power load monitoring device according to claim 1, wherein the first power switch (16) and the second power switch (17) both adopt an N-channel MOSFET power switch tube with a maximum allowable voltage of 500V and a maximum allowable current of 25A, the full-bridge rectification circuit (3) adopts a rectifier bridge stack with a maximum allowable voltage of 1000V and a maximum allowable current of 30A, the first isolation transformer (2) adopts an isolation transformer with a rated capacity of 3kVA and a transformation ratio of 11:3, and the second isolation transformer (6) adopts an isolation transformer with a rated capacity of 0.5kVA and a transformation ratio of 1: 1.
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| CN109884367B (en) * | 2018-12-29 | 2022-01-25 | 江苏智臻能源科技有限公司 | Testing system and method for resident user load identification module |
| CN111092486A (en) * | 2019-11-20 | 2020-05-01 | 内蒙古电力(集团)有限责任公司包头供电局 | Non-invasive load acquisition system and method and storage medium |
| CN112285453B (en) * | 2020-09-11 | 2022-12-09 | 国网天津市电力公司 | Low-voltage user load identification test system and test method thereof |
| CN112014788B (en) * | 2020-11-02 | 2021-02-02 | 江苏智臻能源科技有限公司 | Load identification module detection method based on wave recording file playback |
| CN112838585B (en) * | 2021-01-08 | 2022-07-01 | 中国计量大学 | Non-invasive load identification event trigger circuit |
| CN112883545B (en) * | 2021-01-13 | 2022-04-08 | 吉林大学 | Simulation method of power load waveform |
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