CN110009959B - Practical training operation system of all-round power supply station and anti-electricity-stealing practical training circuit thereof - Google Patents
Practical training operation system of all-round power supply station and anti-electricity-stealing practical training circuit thereof Download PDFInfo
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Abstract
The invention provides a training operation system of a full-energy power supply station and an anti-electricity-stealing training circuit thereof, and various electricity-stealing means in a low-voltage power distribution system can be simulated by setting wiring modes of a plurality of electric energy meters in the anti-electricity-stealing training circuit, so that a training person of a power substation can intuitively learn various electricity-stealing principles and actual circuit structures of electricity stealing. The invention also improves the full-function power supply station practical training system by arranging the photovoltaic power generation practical training unit, the low-voltage centralized meter reading practical training unit and the meter mounting and power connection practical training unit, and can realize the simulation of various working conditions of the low-voltage power distribution network on the basis of the scheme of the invention, so that a worker can directly perform corresponding operation, and the working principles of various working conditions and corresponding practical circuits in the low-voltage power distribution network can be mastered.
Description
Technical Field
The invention relates to the field of power supply station operating systems, in particular to a training operating system of a universal power supply station and an anti-electricity-stealing training circuit thereof.
Background
Along with the gradual increase of the use demands of the society for electric power, in order to better meet the electricity demand of the modern society, the safety and stability of the electric power in the operation process are improved, and a brand new all-purpose power supply station is developed in China. The comprehensive capacity requirement of the all-purpose power supply station on the staff is high, and the staff is required to master various working conditions possibly occurring in the low-voltage power distribution system, so that the all-purpose power supply station is particularly important for training the all-purpose power supply station staff. The existing training mode is usually an on-site teaching mode with a master belt freehand, the efficiency of the mode is low, visual feeling is lacking, and workers are difficult to correspond to working conditions in an actual power grid.
Taking anti-electricity-stealing as an example, the full-energy power supply station not only needs to provide corresponding power supply service, but also needs to check and check the running condition of the power grid, and if various electricity-stealing principles and actual electricity-stealing means cannot be familiar, the check on the low-voltage power distribution network is easy to make mistakes. In the prior art, although the circuit design aiming at the electricity larceny prevention exists, most of the circuit designs aiming at the single electricity larceny form are required to be mastered by trained personnel of a power substation, and how to realize multiple electricity larceny simulation in a set of system is an urgent problem to be solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a training operation system of an all-purpose power supply station and an anti-electricity-stealing training circuit thereof, and the specific scheme is as follows:
the power input end of the anti-electricity-theft training circuit comprises a live wire A, a live wire B, a zero line C and a zero line D;
the live wire input end of the electric energy meter PJ1 is connected with the A live wire through a switch K1 and is also connected with the C zero line through a switch K2; the zero line input end of the electric energy meter PJ1 is connected with a C zero line through a switch K3 and is also connected with a fire wire A through a switch K4; the zero line output end of the electric energy meter PJ1 is connected with a D zero line through a load D1 and a switch K6 in sequence; the live wire output end of the electric energy meter PJ1 is connected between the load D1 and the switch K6 through the switch K5;
the live wire input end of the electric energy meter PJ2 is connected with the live wire B, and the zero wire input end of the electric energy meter PJ2 is connected with the zero wire D; the zero line output end of the electric energy meter PJ2 is connected with the A live line through a load D2 and a switch K8 in sequence; the live wire output end of the electric energy meter PJ2 is connected between the load D2 and the switch K8 through the switch K7;
the power input end of the anti-electricity-stealing practical training circuit also comprises an E fire wire, an F fire wire, a G zero wire and an H zero wire; the anti-electricity-stealing practical training circuit further comprises an electric energy meter PJ3 and an electric energy meter PJ4;
the live wire input end of the electric energy meter PJ3 is connected with the E live wire through a switch K9 and is also connected with the G zero line through a switch K10; the zero line input end of the electric energy meter PJ3 is connected with the G zero line through a switch K11 and is also connected with the E fire wire through a switch K12; the zero line output end and the live line output end of the electric energy meter PJ3 are connected with a load D3, and the live line output end of the electric energy meter PJ3 is grounded through a switch K13;
the live wire input end of the electric energy meter PJ4 is connected with the live wire F, and the zero wire input end of the electric energy meter PJ4 is connected with the zero wire H; the live wire output end and the zero line output end of the electric energy meter PJ4 are connected with a load D4; a switch KA5 is arranged between the live wire input end and the live wire output end of the electric energy meter PJ4.
Further, the load D1, the load D2, the load D3 and/or the load D4 are provided with corresponding control switches.
Further, the load D1, the load D2, the load D3 and/or the load D4 are provided with corresponding circuit breakers.
The invention also provides a practical training operation system of the all-purpose power supply station, which comprises the anti-electricity-stealing practical training circuit, the low-voltage distribution box, the photovoltaic power generation practical training unit, the low-voltage centralized meter reading practical training unit and the meter mounting and electricity receiving practical training unit; the low-voltage distribution box is provided with an input end for connecting a power grid, and an output end of the low-voltage distribution box is respectively in power supply connection with an anti-electricity-stealing practical training circuit, a photovoltaic power generation practical training unit, a low-voltage centralized meter reading practical training unit and a meter mounting and electricity receiving practical training unit.
Further, the input end of the low-voltage distribution box is sequentially provided with a measuring transformer, an isolation disconnecting link and a measuring transformer; the output end of the measuring transformer is connected with a capacitance compensation unit and the output end of the low-voltage distribution box which are arranged in parallel.
Further, the output end of the low-voltage distribution box comprises a first output branch and a second output branch; the first output branch is in power supply connection with the low-voltage centralized meter reading practical training unit and the meter loading and electricity connection practical training unit; the second output branch circuit is in power supply connection with the photovoltaic power generation training unit and the anti-electricity-stealing training circuit.
Further, the photovoltaic power generation training unit comprises a transformer, wherein the input end of the transformer is connected with the output end of the low-voltage distribution box through a fuse FU1, and the output end of the transformer is sequentially connected with a rectifier and an inverter through a contactor; a first total leakage detection coil is arranged between the transformer and the contactor; the output end of the inverter is connected with an electric energy meter PJ5, the electric energy meter PJ5 is connected with an electric energy meter PJ6, and a load D5 is connected between the electric energy meter PJ5 and the electric energy meter PJ 6.
Further, the low-voltage centralized meter reading training unit comprises two fault boards for simulating wiring faults, and the input sides of the two fault boards are connected in parallel and then connected with the output end of the low-voltage distribution box through a fuse FU 4; the output side of one fault board is respectively connected with a three-phase through meter and a load M1, and the output side of the other fault board is respectively connected with a three-phase transformer meter and a load M2.
Further, the meter-mounting power-on training unit comprises a fuse FU5, and the input side of the fuse FU5 is connected with the output end of the low-voltage distribution box; the output side of the fuse FU5 is connected with a wiring row, and a three-phase ammeter, a three-phase voltmeter, a current transformer and a second total leakage detection coil are sequentially connected between the fuse UF5 and the wiring row.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following advantages:
1. the invention sets the wiring mode of a plurality of electric energy meters in the anti-electricity-stealing practical training circuit, and can simulate various electricity-stealing means in the low-voltage power distribution system by different operations of practical training personnel, thereby leading the practical training personnel to intuitively understand various electricity-stealing principles and providing a hardware platform support for the cooperative operation of construction business, the multi-purpose and one-time service of personnel and the cultivation of 'all-purpose' talents.
2. The invention also improves the full-function power supply station practical training system by arranging the photovoltaic power generation practical training unit, the low-voltage centralized meter reading practical training unit and the meter mounting and power connection practical training unit, and can realize the simulation of various working conditions of the low-voltage power distribution network on the basis of the scheme of the invention, so that a worker can directly perform corresponding operation, and the working principles of various working conditions and corresponding practical circuits in the low-voltage power distribution network can be mastered.
Drawings
FIG. 1 is a circuit diagram of an anti-electricity-theft training circuit in embodiment 1 of the invention;
FIG. 2 is a schematic diagram of a system structure in embodiment 2 of the present invention;
fig. 3 is a circuit diagram of a low-voltage distribution box in embodiment 2 of the present invention;
FIG. 4 is a circuit diagram of a photovoltaic power generation training unit in example 3 of the present invention;
FIG. 5 is a circuit diagram of a low voltage centralized meter reading training unit in example 4 of the present invention;
FIG. 6 is a circuit diagram of the meter-in-meter training unit in example 5 of the present invention;
FIG. 7 is a front view of the anti-electricity-theft training cabinet in embodiment 1 of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the following specific embodiments.
Example 1
Fig. 1 is a circuit diagram of an anti-electricity-theft training circuit in the present embodiment. As can be seen from fig. 1, the power input end of the anti-electricity-stealing practical training circuit is provided with an incoming line idle switch 1, and three live wires L11, L21, L31 and a zero line N1 are connected from the power source through the incoming line idle switch 1, wherein the live wire L11 is divided into two, that is, the anti-electricity-stealing practical training circuit actually has four live wires (A, B, E and F) input, and meanwhile, one zero line is divided into four zero lines (C, D, G and H) through a zero line. The four live wires are respectively provided with a breaker QF1, a breaker QF2, a breaker QF3 and a breaker QF4, and the live wire A and the live wire B are also provided with relays JK1 and JK2; the four zero lines are respectively provided with a breaker QF5, a breaker QF6, a breaker QF7 and a breaker QF8.
The anti-electricity-stealing practical training circuit comprises an electric energy meter PJ1, an electric energy meter PJ2, an electric energy meter PJ3 and an electric energy meter PJ4.
The live wire input end of the electric energy meter PJ1 is connected with the A live wire through a switch K1 and is also connected with the C zero line through a switch K2; the zero line input end of the electric energy meter PJ1 is connected with a C zero line through a switch K3 and is also connected with a fire wire A through a switch K4; the zero line output end of the electric energy meter PJ1 is connected with a D zero line through a load D1 and a switch K6 in sequence; the live wire output end of the electric energy meter PJ1 is connected between the load D1 and the switch K6 through the switch K5.
The live wire input end of the electric energy meter PJ2 is connected with the live wire B, and the zero wire input end of the electric energy meter PJ2 is connected with the zero wire D; the zero line output end of the electric energy meter PJ2 is connected with the A live line through a load D2 and a switch K8 in sequence; the live wire output end of the electric energy meter PJ2 is connected between the load D2 and the switch K8 through the switch K7.
The live wire input end of the electric energy meter PJ3 is connected with the E live wire through a switch K9 and is also connected with the G zero line through a switch K10; the zero line input end of the electric energy meter PJ3 is connected with the G zero line through a switch K11 and is also connected with the E fire wire through a switch K12; the zero line output end and the live line output end of the electric energy meter PJ3 are connected with a load D3, and the live line output end of the electric energy meter PJ3 is grounded through a switch K13.
The live wire input end of the electric energy meter PJ4 is connected with the live wire F, and the zero wire input end of the electric energy meter PJ4 is connected with the zero wire H; the live wire output end and the zero line output end of the electric energy meter PJ4 are connected with a load D4; a switch KA5 is arranged between the live wire input end and the live wire output end of the electric energy meter PJ4.
In particular, in order to keep the load completely identical to the actual working site, the load D1, the load D2, the load D3 and the load D4 are each provided with corresponding control switches KA1-KA4 and circuit breakers QF9-QF12.
Through the simulation demonstration that the real training circuit of anti-electricity-theft of this embodiment can carry out multiple electricity-theft condition, real training personnel carries out the operation that is useless to the switch on the real training circuit according to the real training content of difference, through the load running condition and the count condition of electric energy meter before and after the observation operation, thereby judge whether realized real training content, through this process, can make real training personnel directly participate in real training operation in-process, can be better understand and learn the correlation principle of electricity-theft, thereby reach the real purpose of instructing of anti-electricity-theft, real training content includes:
two-family combined electricity larceny
When the control K1, the control K3, the control K5 and the control K7 are closed and the control K2, the control K4, the control K6 and the control K8 are opened, the load D1 works normally, the electric energy meters PJ1 and PJ2 read normally, and the user normal electricity consumption is simulated and demonstrated;
when the control K1, K3, K5 and K7 are disconnected and the control K2, K4, K6 and K8 are closed, the load D1 is connected with the live wire A through the zero line input end 3 and the zero line output end 4 of the electric energy meter PJ1, the load D6 is connected with the zero line D through the switch K6, the load D2 is connected with the live wire A through the zero line input end 3 and the zero line output end 4 of the electric energy meter PJ2, and at the moment, the loads D1 and D2 still work normally, but the electric energy meters PJ1 and PJ2 stop reading, so that the condition of combined electricity theft of two households is simulated and demonstrated.
Zero fire anti-theft electricity
When the control switches K9 and K11 are closed and the switches K10, K12 and K13 are opened, the load D3 works normally, and the electric energy meter PJ3 reads normally; when the switches K9 and K11 are disconnected, the switches K10, K12 and K13 are closed, the load D3 is connected with the zero line G through the live wire output end 2, the live wire input end 1 and the switch K10 of the electric energy meter PJ3, the load D3 is connected with the live wire E through the zero line output end 4, the zero line input end 3 and the switch K12 of the electric energy meter PJ3, at the moment, the electric energy meter is in reverse connection with zero fire, normal reading cannot be achieved, and the load D3 can work normally, so that zero fire reverse connection electricity larceny is simulated and demonstrated.
Remote-controlled electricity larceny simulation
Through the control switch KA5, remote control electricity larceny can be simulated, when the electric energy meter PJ4 works normally, the KA5 is disconnected, and at the moment, the load D4 works normally, and the electric energy meter PJ4 reads normally; when the control KA5 is closed, the live wire input end 1 and the live wire output end 2 of the electric energy meter PJ4 are in short circuit, so that the live wire does not flow through the electric energy meter PJ4 any more, the load D4 is not affected at the moment, the electric energy meter PJ4 can work normally, and the electric energy meter PJ4 cannot read normally.
In this embodiment, the electric energy meters PJ1, PJ2, PJ3 and PJ4 are single-phase electric energy meters; the loads D1, D2, D3, and D4 may employ incandescent lamps as the analog loads. Meanwhile, for the switches K1 to K12 in this embodiment, different switch types may be selected, which may be conventional single-point single-control switches, or may be selected switches having an interlocking function, for example, the switches K1 and K2 are interlocked, one is closed and the other is opened, and the switches K3 and K4, K5 and K6, K7 and K8, K9 and K10, and K11 and K12 may also be selected switches having an interlocking function. And a relay switch can be adopted for both a single-point single-control switch and a switch with an interlocking function, for example, K1 is a normally closed contact of the relay, K2 is a normally open contact of the relay, and the control of the switch is realized by controlling the relay, so that the simulation of various electricity larceny is realized.
Example 2
On the basis of embodiment 1, the embodiment provides a training operation system of a universal power supply station, and as shown in fig. 2, the system of the embodiment comprises a low-voltage distribution box, an anti-electricity-stealing training circuit, a photovoltaic power generation training unit, a low-voltage centralized meter reading training unit and a meter-mounting and electricity-receiving training unit. As shown in fig. 3, a circuit diagram of a low-voltage distribution box in the embodiment is shown, a 10kV power grid supplies power to the low-voltage distribution box through a gram switch K14 and a 10kV transformer, the 10kV transformer outputs 0.4kV voltage, and the voltage sequentially passes through a measurement transformer T1, an isolation knife switch K15, a measurement transformer T2 and a lightning arrester F1 and is divided into three paths, wherein one path is connected with a compensation capacitor bank through a capacitance switch K16, the other two paths are a first branch and a second branch, and the first branch supplies power to a low-voltage centralized meter reading training unit and a meter installing and electricity connection training unit through an outlet switch K17; the second branch is used for supplying power to the photovoltaic power generation training unit and the anti-electricity-theft training circuit (namely the anti-electricity-theft training unit in the figure) through the outlet switch K18.
In this embodiment, in order to ensure the integrity of the system, and at the same time, simplify the system as much as possible and meet the practical training requirement, a 10KV step-down transformer, a line pole, etc. in a low-voltage distribution box can be displayed in a 3D picture screen printing mode, and the other devices adopt practical hardware devices.
Example 3
On the basis of embodiment 2, the embodiment provides a specific implementation form of a photovoltaic power generation training unit, as shown in fig. 4, which is a circuit diagram of the photovoltaic power generation training unit, as can be seen from fig. 4, a power input end is firstly connected with a transformer through a fuse FU1, an output side of the transformer is three-phase alternating current, the transformer is connected with a rectifier through contactors KM1 and KM2, and a first total leakage detection coil is arranged between the transformer and the rectifier. The direct current output by the rectifier is transmitted to the three-phase inverter through the breaker QF17 and the fuse FU2 to be changed into alternating current, so that simulation of photovoltaic power generation is realized. Alternating current output by the three-phase inverter sequentially flows through the electric energy meter PJ5 and the electric energy meter PJ6 through the air switch 2 and the fuse FU3 and then enters the power grid, loads D5-D6 are connected between the electric energy meter PJ5 and the electric energy meter PJ6, and each load is provided with a corresponding switch, namely KA6, KA7 and KA8 in the figure.
The electric energy meters PJ5 and PJ6 are three-phase electric energy meters; fuses FU1, FU2 and FU3 mainly protect the line; the load switches KA6, KA7 and KA8 are mainly used for controlling the working state of the analog load incandescent lamp; the first total leakage detection coil is mainly used for protecting the normal operation of a circuit, when the lower-level circuit of the first total leakage detection coil is out of line and has leakage faults, the first total leakage detection coil can send out signals, and the contactors KM1 and KM2 can be disconnected to ensure the normal operation of the circuit.
In this embodiment, the part from the power input end of the photovoltaic power generation training unit to the output end of the rectifier is used for simulating the process of generating direct current by actual photovoltaic power generation, the direct current is changed into alternating current through the three-phase inverter and is input into the power grid, so that complete simulation of actual photovoltaic power generation is realized, a training person needs to operate the circuit in this embodiment, the photovoltaic power generation training circuit is conducted, the influence caused by the training operation is judged by observing the running condition of the load and the electric energy meter, the process of photovoltaic power generation is known, and the training purpose is achieved.
Example 4
On the basis of embodiment 3, the embodiment provides a specific implementation form of a low-voltage centralized meter reading training unit, as shown in fig. 5, the low-voltage centralized meter reading training unit acquires electric energy from a first branch of a low-voltage distribution box through a fuse FU4, and then connects two parallel fault boards, namely a 1# fault board and a 2# fault board in fig. 5, the 1# fault board is connected with a three-phase straight-through table through an incoming line open 2, the three-phase straight-through table is connected with a load through an incoming line open 3, and the load selects a motor M1, incandescent lamps D11, D12 and D13; the fault board of the No. 2 meter is connected with a three-phase transformer meter through a wire inlet air switch 4, the three-phase transformer meter is connected with a load through a wire inlet air switch 5, and the load is selected from a motor M2, incandescent lamps D14, D15 and D16; each fault board comprises an input side and an output side, and the output side and the input side of the fault board are connected through lines and are used for simulating wiring faults, such as faults of voltage phase failure, current division, phase dislocation and the like.
Based on the embodiment, when training is performed, a practical training person needs to operate the fault board, according to different practical training contents to be simulated, the original correct wiring mode of the input side and the output side on the fault board needs to be modified into an incorrect wiring mode, for example, voltage phase failure simulation needs to disconnect the wiring of one phase of input and output, and then the operation condition of the corresponding load and the electric energy meter is observed, so that what influence is given to the load and the electric energy meter by different wiring faults is known, and the training of the practical training person is realized.
Example 5
On the basis of embodiment 4, the embodiment provides a specific implementation form of a meter-mounting electricity-connecting practical training unit, as shown in fig. 6, the meter-mounting electricity-connecting practical training unit obtains electric energy from a low-voltage distribution box through a fuse FU5 and an air switch 3, then the obtained electric energy is connected to a wiring board through a current transformer and a second total leakage detection coil, a three-phase voltmeter and a three-phase ammeter are arranged on a transmission line, and each phase is also respectively provided with overcurrent protection.
In the embodiment, the practical training personnel installs the electric energy meter on the wiring board, and after the electric energy meter is electrified, the operation condition of installing the electric energy meter is observed, and the readings of the ammeter and the voltmeter are combined, so that whether the meter installation operation is correct or not is judged, and the practical training of the meter installation and the electricity connection is achieved.
In practice, the above embodiment may be implemented in a practical training cabinet, taking the anti-electricity-theft practical training circuit in embodiment 1 as an example, the anti-electricity-theft practical training circuit is arranged on the practical training cabinet, as shown in fig. 7, which is a front view of the anti-electricity-theft practical training cabinet, relevant devices of the anti-electricity-theft practical training circuit are arranged on an operation panel on the front face of the anti-electricity-theft practical training cabinet, and connection lines between the devices are not displayed in the cabinet, wherein B1, B2 and B3 are a start button, a stop button and an emergency stop button respectively. The arrangement of the relevant devices on the training cabinet is not limited to that shown in fig. 7 in this embodiment, and the layout arrangement may be adjusted in other embodiments.
The embodiments 2 to 5 can also be realized in a similar form of the practical training cabinet, and practical training staff can judge whether practical training content is realized by operating devices on the practical training cabinet.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. The anti-electricity-stealing practical training circuit is characterized by comprising an electric energy meter PJ1 and an electric energy meter PJ2, wherein the power input end of the anti-electricity-stealing practical training circuit comprises a live wire A, a live wire B, a zero line C and a zero line D;
the live wire input end of the electric energy meter PJ1 is connected with the A live wire through a switch K1 and is also connected with the C zero line through a switch K2; the zero line input end of the electric energy meter PJ1 is connected with a C zero line through a switch K3 and is also connected with a fire wire A through a switch K4; the zero line output end of the electric energy meter PJ1 is connected with a D zero line through a load D1 and a switch K6 in sequence; the live wire output end of the electric energy meter PJ1 is connected between the load D1 and the switch K6 through the switch K5;
the live wire input end of the electric energy meter PJ2 is connected with the live wire B, and the zero wire input end of the electric energy meter PJ2 is connected with the zero wire D; the zero line output end of the electric energy meter PJ2 is connected with the A live line through a load D2 and a switch K8 in sequence; the live wire output end of the electric energy meter PJ2 is connected between the load D2 and the switch K8 through the switch K7;
the power input end of the anti-electricity-stealing practical training circuit also comprises an E fire wire, an F fire wire, a G zero wire and an H zero wire; the anti-electricity-stealing practical training circuit further comprises an electric energy meter PJ3 and an electric energy meter PJ4;
the live wire input end of the electric energy meter PJ3 is connected with the E live wire through a switch K9 and is also connected with the G zero line through a switch K10; the zero line input end of the electric energy meter PJ3 is connected with the G zero line through a switch K11 and is also connected with the E fire wire through a switch K12; the zero line output end and the live line output end of the electric energy meter PJ3 are connected with a load D3, and the live line output end of the electric energy meter PJ3 is grounded through a switch K13;
the live wire input end of the electric energy meter PJ4 is connected with the live wire F, and the zero wire input end of the electric energy meter PJ4 is connected with the zero wire H; the live wire output end and the zero line output end of the electric energy meter PJ4 are connected with a load D4; a switch KA5 is arranged between the live wire input end and the live wire output end of the electric energy meter PJ4.
2. The anti-electricity-theft training circuit according to claim 1, characterized in that the load D1, the load D2, the load D3 and/or the load D4 are provided with corresponding control switches.
3. The anti-theft training circuit according to claim 1 or 2, characterized in that the load D1, the load D2, the load D3 and/or the load D4 are provided with corresponding circuit breakers.
4. The practical training operation system of the all-purpose power supply station is characterized by comprising the anti-electricity-stealing practical training circuit, a low-voltage distribution box, a photovoltaic power generation practical training unit, a low-voltage centralized meter reading practical training unit and a meter mounting and electricity receiving practical training unit according to any one of claims 1-3; the low-voltage distribution box is provided with an input end for connecting a power grid, and an output end of the low-voltage distribution box is respectively in power supply connection with an anti-electricity-stealing practical training circuit, a photovoltaic power generation practical training unit, a low-voltage centralized meter reading practical training unit and a meter mounting and electricity receiving practical training unit.
5. The training operation system of the all-purpose power station according to claim 4, wherein the input end of the low-voltage distribution box is sequentially provided with a measuring transformer, an isolating disconnecting link and a measuring transformer; the output end of the measuring transformer is connected with a capacitance compensation unit and the output end of the low-voltage distribution box which are arranged in parallel.
6. The utility model as claimed in claim 5, wherein the output end of the low voltage distribution box comprises a first output branch and a second output branch; the first output branch is in power supply connection with the low-voltage centralized meter reading practical training unit and the meter loading and electricity connection practical training unit; the second output branch circuit is in power supply connection with the photovoltaic power generation training unit and the anti-electricity-stealing training circuit.
7. The training operation system of the all-round power supply station according to any one of claims 4 to 6, wherein the photovoltaic power generation training unit comprises a transformer, an input end of the transformer is connected with an output end of a low-voltage distribution box through a fuse FU1, and an output end of the transformer is sequentially connected with a rectifier and an inverter through a contactor; a first total leakage detection coil is arranged between the transformer and the contactor; the output end of the inverter is connected with an electric energy meter PJ5, the electric energy meter PJ5 is connected with an electric energy meter PJ6, and a load D5 is connected between the electric energy meter PJ5 and the electric energy meter PJ 6.
8. The training operation system of the all-purpose power station according to any one of claims 4 to 6, wherein the low-voltage centralized meter reading training unit comprises two fault boards for simulating wiring faults, and the input sides of the two fault boards are connected in parallel and then connected with the output end of the low-voltage distribution box through a fuse FU 4; the output side of one fault board is respectively connected with a three-phase through meter and a load M1, and the output side of the other fault board is respectively connected with a three-phase transformer meter and a load M2.
9. The training operation system of the all-round power supply station according to any one of claims 4 to 6, wherein the meter-mounted power-on training unit comprises a fuse FU5, and an input side of the fuse FU5 is connected with an output end of a low-voltage distribution box; the output side of the fuse FU5 is connected with a wiring row, and a three-phase ammeter, a three-phase voltmeter, a current transformer and a second total leakage detection coil are sequentially connected between the fuse UF5 and the wiring row.
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