An intelligent miswiring simulator for single-phase residential user electric energy meters

Abstract

The present invention relates to the technical field of residential electricity energy meters, and in particular to a single-phase residential user electricity meter intelligent miswiring simulator. The simulator comprises a control panel, an intelligent energy meter 1, an intelligent energy meter 2, a back-of-meter switch QF101 and QF201, an indoor switch QF102 and QF202, a user load 1 FZ101, a user load 2 FZ201, a wiring control board 1 and a wiring control board 2, and each electrical component is installed on the control panel. The present invention can simulate a variety of single-phase residential user electricity meter miswiring faults by adopting different wiring operations.

Description

Technical Field

[0001] The invention relates to the technical field of residential electricity energy meters, in particular to an intelligent miswiring simulator for single-phase residential user electricity energy meters. Background Art

[0002] The simulator is mainly used to simulate various misconnections between multiple single-phase residential electricity meters, switches behind the meters and indoor switches, and allows operators to measure, analyze and judge. At the same time, the device is equipped with an intelligent protection unit module, which has functions such as leakage, overload and grounding protection.

[0003] The common single-phase residential user electric energy meter intelligent miswiring simulation device on the market is mainly for simulating the fault of multiple residential electric energy meters installed in the meter box. In this case, the user can use electricity normally, and the electric energy meter in the meter box can measure the electricity, but the measured electricity is not the actual electricity consumption of the user. In real life, the wiring of single-phase electric energy meters is more complicated. The fault of inter-household connection is just one of many faults. Some wiring faults will cause users to be unable to use electricity or the electric energy meter cannot measure. Some wiring faults will be used by criminals to steal electricity, and some wiring faults will pose serious safety hazards.

[0004] The patent document with application publication number CN101944301A discloses a simulation training and simulation examination system for miswiring of electric energy metering devices. The present invention includes a server storing a server program and a miswiring database, a user terminal storing a client program, a data acquisition instrument with a field remote communication function, and a remote terminal device with a remote communication function, which is connected to the server. It can send the field data collected by the data acquisition instrument working on the field to the server through the remote communication device for miswiring analysis.

[0005] In addition, the patent document with application publication number CN107748277A discloses a programmable automatic wiring device for protection simulation test, including a programmable control card, the programmable control card controls the connection of an analog channel selection circuit, an input channel selection circuit and an output channel selection circuit; one end of the analog channel selection circuit is used to control the selection of the analog quantity connection terminal connected to the first protection device to be tested and the second protection device to be tested, and the other end is used to connect the analog quantity connection terminal of the tester; one end of the input channel selection circuit is used to control the selection of the input connection terminal connected to the first protection device to be tested and the second protection device to be tested, and the other end is used to connect the input connection terminal of the tester; one end of the output channel selection circuit is used to control the selection of the output connection terminal connected to the first protection device to be tested and the second protection device to be tested, and the other end is used to connect the output connection terminal of the tester. It realizes the automatic connection process of the device through the programmable control card, which simplifies the test wiring steps. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent miswiring simulator for single-phase residential user electric energy meters, which can simulate various miswiring faults of single-phase residential user electric energy meters.

[0007] The present invention discloses a single-phase residential user electric energy meter intelligent wrong wiring simulator, comprising a control panel, an intelligent electric energy meter 1, an intelligent electric energy meter 2, switches QF101 and QF201 behind the meter, indoor switches QF102 and QF202, a user load 1 FZ101, a user load 2 FZ201, a wiring control board 1 and a wiring control board 2, wherein each electrical component is installed on the control panel, the wiring terminals I101-I104 of the intelligent electric energy meter 1 are respectively connected with the wiring terminals D101-D104 of the wiring control board 1 in a one-to-one correspondence, the wiring terminals I201-I204 of the intelligent electric energy meter 2 are respectively connected with the wiring terminals D201-D204 of the wiring control board 1 in a one-to-one correspondence, the wiring terminals D0 and D1 of the wiring control board 1 are respectively connected with the neutral line N and the live line L of the power grid, the wiring terminals D105, D106, D205, and D206 of the wiring control board 1 are respectively connected with the wiring terminals D101-D104 of the wiring control board 1 in a one-to-one correspondence, The connection terminals L101 and N101 of the switch QF101 and the connection terminals L201 and N201 of the switch QF201 after the meter are connected one by one, and the connection terminals L102 and N102 of the switch QF101 after the meter and the connection terminals L202 and N202 of the switch QF201 after the meter are connected one by one to the terminals D111, D112, D211 and D212 of the connection control board 2 respectively. The connection terminals of the connection control board 2 D121, D122, D221, and D222 are connected to the wiring terminals L112, N112, L212, and N212 of indoor switches QF102 and QF202 respectively. The wiring terminals L113 and N113 of indoor switch QF102 are connected to the two ends of user load one FZ101 respectively. The wiring terminals L213 and N213 of indoor switch QF202 are connected to the two ends of user load two FZ201 respectively.

[0008] Preferably, the wiring control board 1 is composed of eight relay groups, which are relay group 1, relay group 2, relay group 3, relay group 4, relay group 5, relay group 6, relay group 7 and relay group 8. The connection terminal I101 of the smart energy meter 1 is connected to the connection terminal D101 of the relay group 1. The relay group 1 includes six relays, which are Q1, Q2, Q3, Q4, Q5 and Q6 respectively. The connection terminal D101 is the connection terminal of the relay Q1 in the relay group 1. 1. The common end of the normally open contacts of Q2, Q3, Q4, Q5 and Q6, and the other ends of relays Q1, Q2, Q3, Q4, Q5 and Q6 are connected to terminals D1, D0, D105, D106, D205 and D206 respectively. The wiring combinations of I101, I102, I103, I104 of smart energy meter 1 and I201, I202, I203, I204 of smart energy meter 2 are controlled by these eight relay groups respectively, and the control principle of each wiring combination is the same.

[0009] Preferably, the wiring control board 2 is composed of four relay groups, which are relay group A, relay group B, relay group C and relay group D respectively. The wiring terminal L102 of the meter switch QF101 is connected to the wiring terminal D111 of the relay group A. The relay group A includes four relays, which are Q1', Q2', Q3' and Q4' respectively. The wiring terminal D111 is the common end of the normally open contacts of the relays Q1', Q2', Q3' and Q4' in the relay group A. The other ends of the relays Q1', Q2', Q3' and Q4' are connected to the wiring terminals D121, D122, D221 and D222 respectively. The wiring combinations of the wiring terminals L102 and N102 of the meter switch QF101 and the wiring terminals L202 and N202 of the meter switch QF201 are respectively controlled by the four relay groups, and the control principle of each wiring combination is the same.

[0010] Preferably, it comprises an indoor socket CZ101 and an indoor socket CZ201, the connection terminals L113 and N113 of the indoor switch QF102 are respectively connected to the two ends of the indoor socket CZ101, and the connection terminals L213 and N213 of the indoor switch QF202 are respectively connected to the two ends of the indoor socket CZ201.

[0011] Preferably, it further comprises an illegal power switch QF103 and an illegal power switch QF203, wherein the illegal power switch QF103 is connected to the wiring terminal L113 of the indoor switch QF102, and the other end of the illegal power switch QF103 is connected to one end of the user load FZ102, and the other end of the user load FZ102 is grounded. The illegal power switch QF203 is connected to the wiring terminal L213 of the indoor switch QF202, and the other end of the illegal power switch QF203 is connected to one end of the user load FZ202, and the other end of the user load FZ202 is grounded.

[0012] Preferably, a control panel is provided on the shell, and the control panel includes a power switch key, a storage key, a calculation key, a send key and a retest key. The keys on the control panel are respectively connected to the unit signals on the PCB board. The control panel is located on the top of the shell, and the control panel is at an appropriate vertical height away from the rotating laser transmitter.

[0013] Preferably, the control panel is provided with a current test loop, a voltage test point and a ground reference point, and the current test loop, the voltage test point and the ground reference point are located at the upper and lower sides of the rear switches QF101, QF201 and the indoor switches QF102, QF202.

[0014] In summary, the beneficial technical effects of the present invention are:

[0015] The simulator can fully simulate the fault of incorrect wiring of single-phase residential users' electricity meters, and use instruments to test and analyze indoor sockets; in addition, multiple test points are reserved on the control panel to enable test analysts to master troubleshooting methods; it can also simulate users' illegal electricity wiring operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of relay group 1 of wiring control board 1;

[0018] Figure 3 It is a structural diagram of relay group A of wiring control board 2.

[0019] In the figure, 1. Smart energy meter 1; 2. Smart energy meter 2; 3. Wiring control board 1; 4. Wiring control board 2. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0021] refer to Figure 1, which is a single-phase residential user electric energy meter intelligent miswiring simulator disclosed by the present invention, including a control panel, an intelligent electric energy meter 1, an intelligent electric energy meter 2, switches QF101 and QF201 behind the meter, indoor switches QF102 and QF202, user loads FZ101 and FZ102, user loads FZ201 and FZ202, indoor sockets CZ101 and CZ201, a wiring control board 13 and a wiring control board 24, and all electrical components are installed on the control panel. The wiring terminals I101-I104 of the intelligent electric energy meter 1 are respectively connected to the wiring terminals D101-D104 of the wiring control board 13 in a one-to-one correspondence, and the wiring terminals I201-I204 of the intelligent electric energy meter 2 are respectively connected to the wiring terminals D201-D204 of the wiring control board 13 in a one-to-one correspondence. The wiring terminals D0 and D1 of the wiring control board 13 are respectively connected to the neutral line N and the live line L of the power grid. The connection terminals D105, D106, D205, and D206 of the wiring control board 3 are respectively connected to the connection terminals L101 and N101 of the switch QF101 after the meter and the connection terminals L201 and N201 of the switch QF201 after the meter. The connection terminals L102 and N102 of the switch QF101 after the meter and the connection terminals L202 and N202 of the switch QF201 after the meter are respectively connected to the terminals D111, D112, D211, and D212 of the wiring control board 4 after the meter. The connection terminals D121, D122, D221, and D222 of the wiring control board 4 after the meter are respectively connected to the connection terminals L112, N112, L212, and N212 of the indoor switches QF102 and QF202 after the meter. On the control panel, current test loops, voltage test points, and ground reference points are designed on the upper and lower sides of the switches QF101, QF201 and the indoor switches QF102, QF202, which allow test analysts to master the troubleshooting methods. The wiring terminals L113 and N113 of the indoor switch QF102 are connected to the two ends of the indoor socket CZ101, and the wiring terminals L213 and N213 of the indoor switch QF202 are connected to the two ends of the indoor socket CZ201. Instruments can be used to test and analyze the indoor sockets CZ101 and CZ201. User load one FZ101 is connected in parallel with the indoor socket CZ101, and user load two FZ201 is connected in parallel with the indoor socket CZ201. The illegal power switch QF103 is connected to the connection terminal L113 of the indoor switch QF102, and the other end of the illegal power switch QF103 is connected to one end of the user load FZ102, and the other end of the user load FZ102 is grounded. The illegal power switch QF203 is connected to the connection terminal L213 of the indoor switch QF202, and the other end of the illegal power switch QF203 is connected to one end of the user load FZ202, and the other end of the user load FZ202 is grounded.When the illegal electricity switches QF102 and QF203 are closed, user load 1 FZ102 and user load 2 FZ202 are connected to the terminals L112 and L212 of the indoor switches QF102 and QF202 respectively. The terminals L112 and L212 are both connected to the live wire, but the connected live wire does not pass through the loop formed by the terminals I101 and I102 of the smart energy meter 1 or the terminals I201 and I202 of the smart energy meter 2. Therefore, when the illegal electricity switches QF102 and QF203 are closed, the other ends of the user load 1 FZ102 and user load 2 FZ202 can be grounded to implement electricity theft.

[0022] refer to Figure 2 The wiring control board 13 is composed of eight relay groups, which are relay group 1, relay group 2, relay group 3, relay group 4, relay group 5, relay group 6, relay group 7 and relay group 8. The wiring combinations of I101, I102, I103, I104 of smart energy meter 1 and I201, I202, I203, I204 of smart energy meter 22 are controlled by these eight relay groups, and the control principle of each wiring combination is the same. Take the connection between the wiring terminal I101 of smart energy meter 1 and relay group 1 as an example, as shown in Figure 1 As shown, the terminal I101 of the smart energy meter 1 is connected to the terminal D101 of the relay group 1. The relay group 1 includes six relays, namely Q1, Q2, Q3, Q4, Q5 and Q6. The terminal D101 is the common end of the normally open contacts of the relays Q1, Q2, Q3, Q4, Q5 and Q6 in the relay group 1. The other ends of the relays Q1, Q2, Q3, Q4, Q5 and Q6 are connected to the terminal D1, D0, D105, D106, D205 and D206 respectively. Figure 1 When Q1 is closed, the terminal I101 of the smart energy meter 1 is connected to the live wire L; when Q2 is closed, the terminal I101 of the smart energy meter 1 is connected to the neutral wire N; when Q3 is closed, the terminal I101 of the smart energy meter 1 is connected to the terminal L101 of the switch QF101 behind the meter; when Q4 is closed, the terminal I101 of the smart energy meter 1 is connected to the terminal N101 of the switch QF101 behind the meter; when Q5 is closed, the terminal I101 of the smart energy meter 1 is connected to the terminal L201 of the switch QF201 behind the meter; when Q6 is closed, the terminal I101 of the smart energy meter 1 is connected to the terminal N201 of the switch QF201 behind the meter.

[0023] refer to Figure 3The wiring control board 24 is composed of four relay groups, namely relay group A, relay group B, relay group C and relay group D. The wiring combinations of the wiring terminals L102 and N102 of the switch QF101 after the meter and the wiring terminals L202 and N202 of the switch QF201 after the meter are controlled by these four relay groups respectively, and the control principle of each wiring combination is the same. Take the connection between the wiring terminal L102 of the switch QF101 after the meter and the relay group A as an example, as shown in Figure 1 As shown, the terminal L102 of the switch QF101 at the end of the table is connected to the terminal D111 of the relay group A. The relay group A includes four relays, namely Q1', Q2', Q3' and Q4'. The terminal D111 is the common end of the normally open contacts of the relays Q1', Q2', Q3' and Q4' in the relay group A. The other ends of the relays Q1', Q2', Q3' and Q4' are connected to the terminals D121, D122, D221 and D222 respectively. Figure 1 When Q1' is closed, the terminal L102 of the switch QF101 after the meter is connected to the terminal L112 of the indoor switch QF102; when Q2' is closed, the terminal L102 of the switch QF101 after the meter is connected to the terminal N112 of the indoor switch QF102; when Q3' is closed, the terminal L102 of the switch QF101 after the meter is connected to the terminal L212 of the indoor switch QF202; when Q4' is closed, the terminal L102 of the switch QF101 after the meter is connected to the terminal N212 of the indoor switch QF202.

[0024] Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. An intelligent miswiring simulator for single-phase residential electric energy meters, characterized in that: It includes a control panel, a smart energy meter 1, a smart energy meter 2, switches QF101 and QF201 behind the meter, indoor switches QF102 and QF202, a user load 1 FZ101, a user load 2 FZ201, a wiring control board 1 and a wiring control board 2. All electrical components are installed on the control panel. The wiring terminals I101-I104 of the smart energy meter 1 are respectively connected to the wiring terminals D101-D104 of the wiring control board 1 in a one-to-one correspondence. The wiring terminals I201-I204 of the smart energy meter 2 are respectively connected to the wiring terminals D201-D204 of the wiring control board 1 in a one-to-one correspondence. The wiring terminals D0 and D1 of the wiring control board 1 are respectively connected to the neutral line N and the live line L of the power grid. The wiring terminals D105, D106, D205, and D206 of the wiring control board 1 are respectively connected to the wiring terminals L of the switch QF101 behind the meter. 101, N101 and the wiring terminals L201 and N201 of the after-meter switch QF201 are connected one-to-one, the wiring terminals L102 and N102 of the after-meter switch QF101 and the wiring terminals L202 and N202 of the after-meter switch QF201 are connected one-to-one with the terminals D111, D112, D211 and D212 of the wiring control board 2 respectively, the wiring terminals D121, D122, D221 and D222 of the wiring control board 2 are connected one-to-one with the wiring terminals L112, N112, L212 and N212 of the indoor switches QF102 and QF202 respectively, the wiring terminals L113 and N113 of the indoor switch QF102 are connected to the two ends of the user load FZ101 respectively, and the wiring terminals L213 and N213 of the indoor switch QF202 are connected to the two ends of the user load FZ201 respectively; The wiring control board 1 is composed of eight relay groups, which are relay group 1, relay group 2, relay group 3, relay group 4, relay group 5, relay group 6, relay group 7 and relay group 8. The connection terminal I101 of the smart energy meter 1 is connected to the connection terminal D101 of the relay group 1. The relay group 1 includes six relays, which are Q1, Q2, Q3, Q4, Q5 and Q6 respectively. The connection terminal D101 is for the relays Q1, Q2, Q3, Q4, Q5 and Q6 in the relay group 1. The common end of the normally open contacts of Q2, Q3, Q4, Q5 and Q6, and the other ends of the relays Q1, Q2, Q3, Q4, Q5 and Q6 are connected to the wiring terminals D1, D0, D105, D106, D205 and D206 respectively. The wiring combinations of I101, I102, I103, I104 of the smart energy meter 1 and I201, I202, I203, I204 of the smart energy meter 2 are controlled by these eight relay groups respectively, and the control principle of each wiring combination is the same; The wiring control board 2 is composed of four relay groups, which are relay group A, relay group B, relay group C and relay group D respectively. The wiring terminal L102 of the rear switch QF101 is connected to the wiring terminal D111 of the relay group A. The relay group A includes four relays, which are Q1', Q2', Q3' and Q4' respectively; the wiring terminal D111 is the common end of the normally open contacts of the relays Q1', Q2', Q3' and Q4' in the relay group A, and the other ends of the relays Q1', Q2', Q3' and Q4' are connected to the wiring terminals D121, D122, D221 and D222 respectively. The wiring combinations of the wiring terminals L102 and N102 of the rear switch QF101 and the wiring terminals L202 and N202 of the rear switch QF201 are respectively controlled by the four relay groups, and the control principle of each wiring combination is the same; The single-phase residential user electric energy meter intelligent miswiring simulator comprises an indoor socket CZ101 and an indoor socket CZ201, the wiring terminals L113 and N113 of the indoor switch QF102 are respectively connected to the two ends of the indoor socket CZ101, and the wiring terminals L213 and N213 of the indoor switch QF202 are respectively connected to the two ends of the indoor socket CZ201; The single-phase residential user electric energy meter intelligent wrong wiring simulator also includes an illegal power switch QF103 and an illegal power switch QF203. The illegal power switch QF103 is connected to the wiring terminal L113 of the indoor switch QF102, and the other end of the illegal power switch QF103 is connected to one end of the user load FZ102, and the other end of the user load FZ102 is grounded; the illegal power switch QF203 is connected to the wiring terminal L213 of the indoor switch QF202, and the other end of the illegal power switch QF203 is connected to one end of the user load FZ202, and the other end of the user load FZ202 is grounded; The control panel is provided with a current test loop, a voltage test point and a ground reference point, which are located at the upper and lower sides of the rear switches QF101, QF201 and the indoor switches QF102, QF202.

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