CN111244891A

CN111244891A - Instrument self-checking wiring system and method suitable for reactive compensation power distribution room

Info

Publication number: CN111244891A
Application number: CN202010051719.3A
Authority: CN
Inventors: 叶值兵; 赵长文; 王杰; 谭聪; 文艺; 王东波
Original assignee: Sichuan Wanyi Energy Technology Co ltd
Current assignee: Sichuan Wanyi Energy Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-06-05
Anticipated expiration: 2040-01-17
Also published as: CN111244891B

Abstract

The invention discloses an instrument self-checking wiring system and method suitable for a reactive compensation power distribution room, which comprises a voltage collector, a current collector, a wiring regulator, a metering module and a microprocessor module, wherein the voltage collector is connected with the current collector; the voltage collector and the current collector are both in communication connection with the wiring regulator; the wiring regulator is in communication connection with the metering module; the metering module is in communication connection with the microprocessor module. The instrument self-checking wiring system can automatically acquire the phase angles of voltage and current and judge the wrong wiring of the voltage and the current according to the microprocessor. Meanwhile, the wrong wiring is corrected and switched until the wiring is correct. The system can effectively solve the problem of field wiring, avoid the return to the field for rewiring due to wiring errors, reduce the installation cost and shorten the installation time. The self-checking wiring method of the instrument is simple and easy to operate, reduces operation difficulty, facilitates field temporary operation and corrects wiring in time.

Description

Instrument self-checking wiring system and method suitable for reactive compensation power distribution room

Technical Field

The invention belongs to the technical field of automatic detection of electric power, and particularly relates to an instrument self-checking wiring system and method suitable for a reactive compensation power distribution room.

Background

With the development of the power internet of things, the power data acquisition is particularly important, wherein the acquisition device is the most important thing. The collection system is mainly an electric power meter. In the prior art, when the electric power instrument is installed, the requirement on the wiring professional knowledge of installation operators is high, and the wiring fault rate is high, so that the accuracy of data acquisition is directly influenced. If the situation that the instrument device is connected with wrong wires occurs, an installer needs to return to the field to correct the wiring errors, so that the labor is wasted, the installation cost is increased, and the installation time is prolonged. In order to overcome the defects, the invention provides an instrument self-checking wiring system and method suitable for a reactive compensation power distribution room.

Disclosure of Invention

The invention aims to solve the problem of wiring of the existing electric power instrument and provides an instrument self-checking wiring system and method suitable for a reactive compensation power distribution room.

The technical scheme of the invention is as follows: an instrument self-checking wiring system suitable for a reactive compensation power distribution room comprises a voltage collector, a current collector, a wiring regulator, a metering module and a microprocessor module; the voltage collector and the current collector are both in communication connection with the wiring regulator; the wiring regulator is in communication connection with the metering module; the metering module is in communication connection with the microprocessor module.

The invention has the beneficial effects that: the instrument self-checking wiring system can automatically acquire the phase angles of voltage and current and judge the wrong wiring of the voltage and the current according to the microprocessor. Meanwhile, the wrong wiring is corrected and switched until the wiring is correct. The system can effectively solve the problem of field wiring, avoid the return to the field for rewiring due to wiring errors, reduce the installation cost and shorten the installation time.

Further, the line regulator includes a voltage selector and a current selector; the voltage selector is respectively in communication connection with the voltage collector and the metering module; the current selector is respectively in communication connection with the current collector and the metering module.

The beneficial effects of the further scheme are as follows: in the present invention, the connection regulator makes adjustments to the collected data, such as voltage phase angle and current phase angle, before passing them to the microprocessor.

Further, the voltage selector adopts a 1-out-of-4 selector with the model number 74153; the current selector adopts an 8-to-1 selector with the model 74LS 151.

The beneficial effects of the further scheme are as follows: in the invention, the voltage selector and the current selector can perform multi-path selection on the acquired voltage and current data, and the output ends of the voltage selector and the current selector are respectively connected with the metering module.

Further, the metering module comprises resistors R7-R19, a resistor R64, ground resistors R65-R66, resistors R67-R68, ground resistors R69-R70, ground resistors R73-R74, resistors R71-R72, a resistor R75, a ground capacitor C17, a ground capacitor C19-C21, a ground capacitor C23-C26, a capacitor C27, a ground capacitor C27-C27, a ground capacitor C27-C27, light emitting diodes D27-D27, triodes Q27-Q27, a crystal oscillator X27, ports P27-P27, a metering chip U27 with the model number of RN 833602 27 and an optical coupler chip U27-TA 27 with the model number of LTV-816S-TA 27;

the REFV pin of the chip U3 is respectively connected with a grounding capacitor C17 and a grounding capacitor C56; an I1P pin of the chip U3 is respectively connected with one end of a grounding capacitor C44 and one end of a resistor R64; an I1N pin of the chip U3 is respectively connected with one end of a grounding capacitor C45 and one end of a resistor R67; the other end of the resistor R64 is respectively connected with a grounding resistor R65 and a No. 2 pin of the port P2; the other end of the resistor R67 is respectively connected with a grounding resistor R66 and the 1 st pin of the port P2; the GND pin, the PS pin, the TIO1 pin, the TIO2 pin, the TEST pin and the DGND pin of the chip U3 are all grounded; an I2P pin of the chip U3 is respectively connected with one end of a grounding capacitor C46 and one end of a resistor R68; an I2N pin of the chip U3 is respectively connected with one end of a grounding capacitor C47 and one end of a resistor R71; the other end of the resistor R68 is respectively connected with a grounding resistor R69 and a No. 2 pin of the port P3; the other end of the resistor R71 is respectively connected with a grounding resistor R70 and the 1 st pin of the port P3; the DVCC pin of the chip U3 is connected with the RST _ N pin to be used as the DVCC pin of the chip U3; an AVCC pin of the chip U3 is respectively connected with one end of a grounding capacitor C21, a grounding capacitor C58 and a resistor R9; the other end of the resistor R9 is connected with a DVCC pin of the chip U3; an I3P pin of the chip U3 is respectively connected with one end of a grounding capacitor C48 and one end of a resistor R72; the other end of the resistor R72 is respectively connected with a grounding resistor R73 and a No. 2 pin of the port P4; an I3N pin of the chip U3 is respectively connected with one end of a grounding capacitor C49 and one end of a resistor R75; the other end of the resistor R75 is respectively connected with a grounding resistor R74 and the 1 st pin of the port P4; the PM1 pin, the NC/PM0 pin and the DVCC pin of the chip U3 are all connected with the DVCC pin of the chip U3; a D1P8 pin of the chip U3 is respectively connected with a grounding capacitor C19 and a grounding capacitor C57; an XI pin of the chip U3 is respectively connected with one end of a grounding capacitor C26 and a resistor R13 and one end of a crystal oscillator X2; an XO pin of the chip U3 is respectively connected with the grounding capacitor C25, the other end of the resistor R13 and the other end of the crystal oscillator X2; an SDI pin of the chip U3 is respectively connected with one end of a grounding capacitor C24 and one end of a resistor R12; the SCS _ N pin of the chip U3 is respectively connected with the grounding capacitor C20, one end of the resistor R7 and one end of the resistor R8; the other end of the resistor R8 is connected with a DVCC pin of the chip U3; the SCLK pin of the chip U3 is connected with one end of the grounding capacitor C23 and one end of the resistor R11 respectively; the SDO pin of the chip U3 is connected with one end of the resistor R10; a CF1 pin of the chip U3 is connected with one end of the resistor R16; the other end of the resistor R16 is connected with the base electrode of the triode Q1; the emitter of the triode Q1 is grounded; the collector of the triode Q1 is respectively connected with the No. 2 pin of the chip U20, one end of the resistor R14 and the grounding capacitor C28; the other end of the resistor R14 is respectively connected with the cathode of the diode D1 and one end of the capacitor C27; the anode of the diode D1 and the other end of the capacitor C27 are both connected with a DVCC pin of the chip U3; the 1 st pin of the chip U20 is connected with one end of the resistor R15; the other end of the resistor R15 is connected with a DVCC pin of the chip U3; the 3 rd pin of the chip U20 is used as a COM output port of the metering module; the 4 th pin of the chip U20 is connected with the 1 st pin of the port P5; a CF2 pin of the chip U3 is connected with one end of the resistor R18; the other end of the resistor R18 is connected with the base electrode of the triode Q2; the emitter of the triode Q2 is grounded; the collector of the triode Q2 is respectively connected with the No. 2 pin of the chip U21, one end of the resistor R19 and the grounding capacitor C30; the other end of the resistor R19 is respectively connected with the cathode of the diode D2 and one end of the capacitor C29; the anode of the diode D2 and the other end of the capacitor C29 are both connected with a DVCC pin of the chip U3; the 1 st pin of the chip U21 is connected with one end of the resistor R17; the other end of the resistor R17 is connected with a DVCC pin of the chip U3; the 3 rd pin of the chip U21 is used as a COM output port of the metering module; the 4 th pin of the chip U21 is connected with the 2 nd pin of the port P5; pin 3 of port P3 serves as the COM output port of the metering module.

The beneficial effects of the further scheme are as follows: in the present invention, the metering module may collect electrical quantity data, such as a voltage phase angle and a current phase angle.

Further, the microprocessor module comprises a resistor R4, a resistor R7, a resistor R11, resistors R76-R77, a ground resistor R80, a resistor R81, a ground capacitor C5-C6, a ground capacitor C16, a ground capacitor C22, a ground capacitor C50-C51, a ground capacitor C53, a ground capacitor C59, light emitting diodes D3-D4, a crystal oscillator X1, a crystal oscillator X3, ports P6-P8, a main control chip U2 with the model of STM32F407VGT6TR, a temperature and humidity sensing chip U7 with the model of SENS-SHT20-6, a touch switch chip U10 with the model of FSM4 JSMMA and a memory chip U11 with the model of W25Q256 JVEQ;

the PA2 pin of the chip U2 is connected with the 1 st pin of the port P6; the PA3 pin of the chip U2 is connected with the 2 nd pin of the port P6; pin 3 of port P6 is grounded; the PA4 pin of the chip U2 is connected with the other end of the resistor R7; the PA5 pin of the chip U2 is connected with the other end of the resistor R11; a PA6 pin of the chip U2 is respectively connected with the other ends of the grounding capacitor C22 and the resistor R10; the PA7 pin of the chip U2 is connected with the other end of the resistor R12; the PA13 pin of the chip U2 is connected with the 2 nd pin of the port P7; the PA14 pin of the chip U2 is connected with the 3 rd pin of the port P7; the 1 st pin of the port P7 is connected with the DVCC pin of the chip U3; pin 5 of port P7 is grounded; the PC10 pin of the chip U2 is connected with the CLK pin of the chip U11; a PC11 pin of the chip U2 is connected with a DO/IO1 pin of the chip U11; the PC12 pin of the chip U2 is connected with the DI/IO0 pin of the chip U11; a PC14 pin of the chip U2 is respectively connected with one end of a crystal oscillator X1 and a grounding capacitor C14; a PC15 pin of the chip U2 is respectively connected with the other end of the crystal oscillator X1 and the grounding capacitor C15; the PE1 pin of the chip U2 is connected with the cathode of the diode D4; the anode of the diode D4 is connected with one end of the resistor R3; the other end of the resistor R3 is connected with a DVCC pin of the chip U3; the PE2 pin of the chip U2 is connected with the cathode of the diode D3; the anode of the diode D3 is connected with one end of the resistor R4; the other end of the resistor R4 is connected with a DVCC pin of the chip U3; a PB2 pin of the chip U2 is connected with a grounding resistor R80; a PB6 pin of the chip U2 is connected with one end of the resistor R76 and an SCL pin of the chip U7 respectively; a PB7 pin of the chip U2 is connected with one end of the resistor R77 and an SDA pin of the chip U7 respectively; the other end of the resistor R76 and the other end of the resistor R77 are both connected with a DVCC pin of the chip U3; the PB10 pin of the chip U2 is connected with the 3 rd pin of the port P8; the PB11 pin of the chip U2 is connected with the 4 th pin of the port P8; pin 2 of port P8 is grounded; the PD0 pin of the chip U2 is connected with the HOLD/IO3 pin of the chip U11; the PD1 pin of the chip U2 is connected with the WP/IO2 pin of the chip U11; a PH0 pin of the chip U2 is respectively connected with one end of a crystal oscillator X3 and a grounding capacitor C53; a PH1 pin of the chip U2 is respectively connected with the other end of the crystal oscillator X3 and the grounding capacitor C59; a BOOT0 pin of the chip U2 is connected with a grounding resistor R2; the NRST pin of the chip U2 is respectively connected with one end of a resistor R81, a grounded capacitor C6, the 1 st pin of the chip U10 and the 2 nd pin of the chip U10; the 3 rd pin and the 4 th pin of the chip U10 are both grounded; the other end of the resistor R81 is connected with a DVCC pin of the chip U3; the VCAP-1 pin of the chip U2 is connected with a grounding capacitor C51; the VCAP-2 pin of the chip U2 is connected with a grounding capacitor C16; the VSS pin of the chip U7 is grounded; the VDD pin of the chip U7 is respectively connected with the grounding capacitor C50 and the DVCC pin of the chip U3; the GND pin and the EP pin of the chip U11 are both grounded; the VCC pin of the chip U11 is connected to the ground capacitor C5 and the DVCC pin of the chip U3, respectively.

The beneficial effects of the further scheme are as follows: in the invention, the microprocessor module reads the chip data of the metering module and controls the selection of the communication signal to complete the analysis of the self-checking wiring.

Based on the system, the invention also provides an instrument self-checking wiring method suitable for the reactive compensation power distribution room, which comprises the following steps:

s1: respectively collecting a voltage phase angle and a current phase angle of an object to be detected by using a voltage collector and a current collector;

s2: inputting the measured voltage phase angle and current phase angle into a wiring regulator for regulation and selection, and inputting the regulated voltage phase angle and current phase angle into a metering module;

s3: acquiring electric quantity data of the adjusted voltage phase angle and current phase angle by using a metering module, and inputting the electric quantity data into a microprocessor module;

s4: and reading the electric quantity data of the metering module by using the microprocessor module, and performing line correction adjustment to complete self-checking wiring.

The invention has the beneficial effects that: the self-checking wiring method of the instrument is simple and easy to operate, reduces operation difficulty, facilitates field temporary operation and corrects wiring in time.

Drawings

FIG. 1 is an overall block diagram of a meter self-test wiring system;

FIG. 2 is a circuit diagram of a metering module;

FIG. 3 is a circuit diagram of a microprocessor module;

FIG. 4 is a flow chart of a meter self-test wiring method;

in the figure, 1, a voltage collector; 2. a current collector; 3. a wire connection adjuster; 4. a metering module; 5. a microprocessor module; 6. a voltage selector; 7. a current selector.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the invention provides an instrument self-checking wiring system suitable for a reactive compensation power distribution room, which comprises a voltage collector 1, a current collector 2, a wiring regulator 3, a metering module 4 and a microprocessor module 5; the voltage collector 1 and the current collector 2 are both in communication connection with the wiring regulator 3; the wiring regulator 3 is in communication connection with the metering module 4; the metering module 4 is in communication with the microprocessor module 5.

In an embodiment of the present invention, as shown in fig. 1, the line regulator 3 includes a voltage selector 6 and a current selector 7; the voltage selector 6 is respectively in communication connection with the voltage collector 1 and the metering module 4; the current selector 3 is respectively connected with the current collector 2 and the metering module 4 in a communication way. In the present invention, the connection regulator makes adjustments to the collected data, such as voltage phase angle and current phase angle, before passing them to the microprocessor.

In the embodiment of the present invention, as shown in fig. 1, the voltage selector 6 is a 1-out-of-4 selector of type 74153; the current selector 7 adopts a 1-out-of-8 selector with the model 74LS 151. In the invention, the voltage selector and the current selector can perform multi-path selection on the acquired voltage and current data, and the output ends of the voltage selector and the current selector are respectively connected with the metering module.

In the embodiment of the invention, as shown in fig. 2, the metering module 4 includes resistors R7-R19, resistor R64, ground resistor R65-R66, resistors R67-R68, ground resistors R69-R70, ground resistors R73-R74, resistors R71-R72, resistor R75, ground capacitor C17, ground capacitor C19-C21, ground capacitor C23-C26, capacitor C27, ground capacitor C27-C27, ground capacitor C27-C27, light emitting diodes D27-D27, triodes Q27-Q27, crystal oscillator X27, port P27-P27, metering chip 27 with model number of RN8302, and optical coupler chip with model number LTV-816S-27-TA 27;

the REFV pin of the chip U3 is respectively connected with a grounding capacitor C17 and a grounding capacitor C56; an I1P pin of the chip U3 is respectively connected with one end of a grounding capacitor C44 and one end of a resistor R64; an I1N pin of the chip U3 is respectively connected with one end of a grounding capacitor C45 and one end of a resistor R67; the other end of the resistor R64 is respectively connected with a grounding resistor R65 and a No. 2 pin of the port P2; the other end of the resistor R67 is respectively connected with a grounding resistor R66 and the 1 st pin of the port P2; the GND pin, the PS pin, the TIO1 pin, the TIO2 pin, the TEST pin and the DGND pin of the chip U3 are all grounded; an I2P pin of the chip U3 is respectively connected with one end of a grounding capacitor C46 and one end of a resistor R68; an I2N pin of the chip U3 is respectively connected with one end of a grounding capacitor C47 and one end of a resistor R71; the other end of the resistor R68 is respectively connected with a grounding resistor R69 and a No. 2 pin of the port P3; the other end of the resistor R71 is respectively connected with a grounding resistor R70 and the 1 st pin of the port P3; the DVCC pin of the chip U3 is connected with the RST _ N pin to be used as the DVCC pin of the chip U3; an AVCC pin of the chip U3 is respectively connected with one end of a grounding capacitor C21, a grounding capacitor C58 and a resistor R9; the other end of the resistor R9 is connected with a DVCC pin of the chip U3; an I3P pin of the chip U3 is respectively connected with one end of a grounding capacitor C48 and one end of a resistor R72; the other end of the resistor R72 is respectively connected with a grounding resistor R73 and a No. 2 pin of the port P4; an I3N pin of the chip U3 is respectively connected with one end of a grounding capacitor C49 and one end of a resistor R75; the other end of the resistor R75 is respectively connected with a grounding resistor R74 and the 1 st pin of the port P4; the PM1 pin, the NC/PM0 pin and the DVCC pin of the chip U3 are all connected with the DVCC pin of the chip U3; a D1P8 pin of the chip U3 is respectively connected with a grounding capacitor C19 and a grounding capacitor C57; an XI pin of the chip U3 is respectively connected with one end of a grounding capacitor C26 and a resistor R13 and one end of a crystal oscillator X2; an XO pin of the chip U3 is respectively connected with the grounding capacitor C25, the other end of the resistor R13 and the other end of the crystal oscillator X2; an SDI pin of the chip U3 is respectively connected with one end of a grounding capacitor C24 and one end of a resistor R12; the SCS _ N pin of the chip U3 is respectively connected with the grounding capacitor C20, one end of the resistor R7 and one end of the resistor R8; the other end of the resistor R8 is connected with a DVCC pin of the chip U3; the SCLK pin of the chip U3 is connected with one end of the grounding capacitor C23 and one end of the resistor R11 respectively; the SDO pin of the chip U3 is connected with one end of the resistor R10; a CF1 pin of the chip U3 is connected with one end of the resistor R16; the other end of the resistor R16 is connected with the base electrode of the triode Q1; the emitter of the triode Q1 is grounded; the collector of the triode Q1 is respectively connected with the No. 2 pin of the chip U20, one end of the resistor R14 and the grounding capacitor C28; the other end of the resistor R14 is respectively connected with the cathode of the diode D1 and one end of the capacitor C27; the anode of the diode D1 and the other end of the capacitor C27 are both connected with a DVCC pin of the chip U3; the 1 st pin of the chip U20 is connected with one end of the resistor R15; the other end of the resistor R15 is connected with a DVCC pin of the chip U3; the 3 rd pin of the chip U20 is used as a COM output port of the metering module 4; the 4 th pin of the chip U20 is connected with the 1 st pin of the port P5; a CF2 pin of the chip U3 is connected with one end of the resistor R18; the other end of the resistor R18 is connected with the base electrode of the triode Q2; the emitter of the triode Q2 is grounded; the collector of the triode Q2 is respectively connected with the No. 2 pin of the chip U21, one end of the resistor R19 and the grounding capacitor C30; the other end of the resistor R19 is respectively connected with the cathode of the diode D2 and one end of the capacitor C29; the anode of the diode D2 and the other end of the capacitor C29 are both connected with a DVCC pin of the chip U3; the 1 st pin of the chip U21 is connected with one end of the resistor R17; the other end of the resistor R17 is connected with a DVCC pin of the chip U3; the 3 rd pin of the chip U21 is used as a COM output port of the metering module 4; the 4 th pin of the chip U21 is connected with the 2 nd pin of the port P5; pin 3 of port P3 serves as the COM output port of metering module 4. In the present invention, the metering module may collect electrical quantity data, such as a voltage phase angle and a current phase angle.

In the embodiment of the present invention, as shown in fig. 3, the microprocessor module 5 includes a resistor R4, a resistor R7, a resistor R11, resistors R76-R77, a ground resistor R80, a resistor R81, ground capacitors C5-C6, a ground capacitor C16, a ground capacitor C22, ground capacitors C50-C51, a ground capacitor C53, a ground capacitor C59, light emitting diodes D3-D4, a crystal oscillator X1, a crystal oscillator X3, ports P6-P8, a main control chip U2 of STM32F VGT6TR, a sensing chip U7 of SENS-SHT20-6, a touch switch chip U10 of FSM4JSMA, and a memory chip U11 of W25Q256 jvieq;

the PA2 pin of the chip U2 is connected with the 1 st pin of the port P6; the PA3 pin of the chip U2 is connected with the 2 nd pin of the port P6; pin 3 of port P6 is grounded; the PA4 pin of the chip U2 is connected with the other end of the resistor R7; the PA5 pin of the chip U2 is connected with the other end of the resistor R11; a PA6 pin of the chip U2 is respectively connected with the other ends of the grounding capacitor C22 and the resistor R10; the PA7 pin of the chip U2 is connected with the other end of the resistor R12; the PA13 pin of the chip U2 is connected with the 2 nd pin of the port P7; the PA14 pin of the chip U2 is connected with the 3 rd pin of the port P7; the 1 st pin of the port P7 is connected with the DVCC pin of the chip U3; pin 5 of port P7 is grounded; the PC10 pin of the chip U2 is connected with the CLK pin of the chip U11; a PC11 pin of the chip U2 is connected with a DO/IO1 pin of the chip U11; the PC12 pin of the chip U2 is connected with the DI/IO0 pin of the chip U11; a PC14 pin of the chip U2 is respectively connected with one end of a crystal oscillator X1 and a grounding capacitor C14; a PC15 pin of the chip U2 is respectively connected with the other end of the crystal oscillator X1 and the grounding capacitor C15; the PE1 pin of the chip U2 is connected with the cathode of the diode D4; the anode of the diode D4 is connected with one end of the resistor R3; the other end of the resistor R3 is connected with a DVCC pin of the chip U3; the PE2 pin of the chip U2 is connected with the cathode of the diode D3; the anode of the diode D3 is connected with one end of the resistor R4; the other end of the resistor R4 is connected with a DVCC pin of the chip U3; a PB2 pin of the chip U2 is connected with a grounding resistor R80; a PB6 pin of the chip U2 is connected with one end of the resistor R76 and an SCL pin of the chip U7 respectively; a PB7 pin of the chip U2 is connected with one end of the resistor R77 and an SDA pin of the chip U7 respectively; the other end of the resistor R76 and the other end of the resistor R77 are both connected with a DVCC pin of the chip U3; the PB10 pin of the chip U2 is connected with the 3 rd pin of the port P8; the PB11 pin of the chip U2 is connected with the 4 th pin of the port P8; pin 2 of port P8 is grounded; the PD0 pin of the chip U2 is connected with the HOLD/IO3 pin of the chip U11; the PD1 pin of the chip U2 is connected with the WP/IO2 pin of the chip U11; a PH0 pin of the chip U2 is respectively connected with one end of a crystal oscillator X3 and a grounding capacitor C53; a PH1 pin of the chip U2 is respectively connected with the other end of the crystal oscillator X3 and the grounding capacitor C59; a BOOT0 pin of the chip U2 is connected with a grounding resistor R2; the NRST pin of the chip U2 is respectively connected with one end of a resistor R81, a grounded capacitor C6, the 1 st pin of the chip U10 and the 2 nd pin of the chip U10; the 3 rd pin and the 4 th pin of the chip U10 are both grounded; the other end of the resistor R81 is connected with a DVCC pin of the chip U3; the VCAP-1 pin of the chip U2 is connected with a grounding capacitor C51; the VCAP-2 pin of the chip U2 is connected with a grounding capacitor C16; the VSS pin of the chip U7 is grounded; the VDD pin of the chip U7 is respectively connected with the grounding capacitor C50 and the DVCC pin of the chip U3; the GND pin and the EP pin of the chip U11 are both grounded; the VCC pin of the chip U11 is connected to the ground capacitor C5 and the DVCC pin of the chip U3, respectively. In the invention, the microprocessor module reads the chip data of the metering module and controls the selection of the communication signal to complete the analysis of the self-checking wiring.

Basically, the present invention also provides an instrument self-checking wiring method suitable for a reactive compensation power distribution room, and the implementation method is as shown in fig. 4, and includes the following steps:

The working principle and the process of the invention are as follows: when the system works, the voltage collector 1 and the current collector 2 respectively collect a voltage phase angle and a current phase angle of an object to be detected. Meanwhile, the collected data are transmitted to the wiring regulator 3 for selective regulation, and the regulated data are transmitted to the metering module 4. The metering module 4 collects metering data and transmits the final data to the microprocessor module 5. The microprocessor module 5 reads data to analyze and process the data, controls the selection of communication signals and corrects the wiring until the wiring is correct.

The invention has the beneficial effects that: the instrument self-checking wiring system can automatically acquire the phase angles of voltage and current and judge the wrong wiring of the voltage and the current according to the microprocessor. Meanwhile, the wrong wiring is corrected and switched until the wiring is correct. The system can effectively solve the problem of field wiring, avoid the return to the field for rewiring due to wiring errors, reduce the installation cost and shorten the installation time. The self-checking wiring method of the instrument is simple and easy to operate, reduces operation difficulty, facilitates field temporary operation and corrects wiring in time.

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.

Claims

1. An instrument self-checking wiring system suitable for a reactive compensation power distribution room is characterized by comprising a voltage collector (1), a current collector (2), a wiring regulator (3), a metering module (4) and a microprocessor module (5); the voltage collector (1) and the current collector (2) are in communication connection with the wiring regulator (3); the wiring regulator (3) is in communication connection with the metering module (4); the metering module (4) is in communication connection with the microprocessor module (5).

2. The meter self-test wiring system suitable for reactive compensation power distribution rooms according to claim 1, characterized in that the wiring regulator (3) comprises a voltage selector (6) and a current selector (7); the voltage selector (6) is respectively in communication connection with the voltage collector (1) and the metering module (4); the current selector (3) is respectively in communication connection with the current collector (2) and the metering module (4).

3. The meter self-test wiring system suitable for reactive compensation power distribution rooms according to claim 2, characterized in that the voltage selector (6) is a 1-out-of-4 selector of type 74153; the current selector (7) adopts an 8-to-1 selector with the model number of 74LS 151.

4. The meter self-detection wiring system suitable for the reactive compensation power distribution room as claimed in claim 1, wherein the metering module (4) comprises resistors R7-R19, resistor R64, ground resistors R65-R66, resistors R67-R68, ground resistors R69-R70, ground resistors R73-R74, resistors R71-R72, resistor R75, ground capacitor C17, ground capacitor C19-C21, ground capacitor C23-C26, capacitor C27, ground capacitor C27-C27, light emitting diode D27-D27, triode Q27-Q27, crystal oscillator X27, port P27-P27, metering chip with model number RN 3602, and optical coupler TA-v 27-ltu chip with model number TA-27-t 27;

the REFV pin of the chip U3 is respectively connected with a grounding capacitor C17 and a grounding capacitor C56; the I1P pin of the chip U3 is respectively connected with one end of a grounding capacitor C44 and one end of a resistor R64; the I1N pin of the chip U3 is respectively connected with one end of a grounding capacitor C45 and one end of a resistor R67; the other end of the resistor R64 is respectively connected with a grounding resistor R65 and a No. 2 pin of a port P2; the other end of the resistor R67 is respectively connected with a grounding resistor R66 and a No. 1 pin of a port P2; the GND pin, the PS pin, the TIO1 pin, the TIO2 pin, the TEST pin and the DGND pin of the chip U3 are all grounded; the I2P pin of the chip U3 is respectively connected with one end of a grounding capacitor C46 and one end of a resistor R68; the I2N pin of the chip U3 is respectively connected with one end of a grounding capacitor C47 and one end of a resistor R71; the other end of the resistor R68 is respectively connected with a grounding resistor R69 and a No. 2 pin of a port P3; the other end of the resistor R71 is respectively connected with a grounding resistor R70 and a No. 1 pin of a port P3; the DVCC pin of the chip U3 is connected with the RST _ N pin to be used as the DVCC pin of the chip U3; the AVCC pin of the chip U3 is respectively connected with one end of a grounding capacitor C21, a grounding capacitor C58 and a resistor R9; the other end of the resistor R9 is connected with a DVCC pin of a chip U3; the I3P pin of the chip U3 is respectively connected with one end of a grounding capacitor C48 and one end of a resistor R72; the other end of the resistor R72 is respectively connected with a grounding resistor R73 and a No. 2 pin of a port P4; the I3N pin of the chip U3 is respectively connected with one end of a grounding capacitor C49 and one end of a resistor R75; the other end of the resistor R75 is respectively connected with a grounding resistor R74 and a No. 1 pin of a port P4; the PM1 pin, the NC/PM0 pin and the DVCC pin of the chip U3 are all connected with the DVCC pin of the chip U3; the D1P8 pin of the chip U3 is respectively connected with a grounding capacitor C19 and a grounding capacitor C57; an XI pin of the chip U3 is respectively connected with one end of a grounding capacitor C26, one end of a resistor R13 and one end of a crystal oscillator X2; an XO pin of the chip U3 is respectively connected with the grounding capacitor C25, the other end of the resistor R13 and the other end of the crystal oscillator X2; an SDI pin of the chip U3 is respectively connected with one end of a grounding capacitor C24 and one end of a resistor R12; the SCS _ N pin of the chip U3 is respectively connected with one end of a grounding capacitor C20, one end of a resistor R7 and one end of a resistor R8; the other end of the resistor R8 is connected with a DVCC pin of a chip U3; the SCLK pin of the chip U3 is respectively connected with one end of a grounding capacitor C23 and one end of a resistor R11; the SDO pin of the chip U3 is connected with one end of a resistor R10; the CF1 pin of the chip U3 is connected with one end of a resistor R16; the other end of the resistor R16 is connected with the base electrode of the triode Q1; the emitter of the triode Q1 is grounded; the collector of the triode Q1 is respectively connected with the No. 2 pin of the chip U20, one end of the resistor R14 and the grounding capacitor C28; the other end of the resistor R14 is respectively connected with the cathode of the diode D1 and one end of the capacitor C27; the anode of the diode D1 and the other end of the capacitor C27 are both connected with a DVCC pin of a chip U3; the 1 st pin of the chip U20 is connected with one end of a resistor R15; the other end of the resistor R15 is connected with a DVCC pin of a chip U3; the 3 rd pin of the chip U20 is used as a COM output port of the metering module (4); the 4 th pin of the chip U20 is connected with the 1 st pin of the port P5; the CF2 pin of the chip U3 is connected with one end of a resistor R18; the other end of the resistor R18 is connected with the base electrode of the triode Q2; the emitter of the triode Q2 is grounded; the collector of the triode Q2 is respectively connected with the No. 2 pin of the chip U21, one end of the resistor R19 and the grounding capacitor C30; the other end of the resistor R19 is respectively connected with the cathode of the diode D2 and one end of the capacitor C29; the anode of the diode D2 and the other end of the capacitor C29 are both connected with a DVCC pin of a chip U3; the 1 st pin of the chip U21 is connected with one end of a resistor R17; the other end of the resistor R17 is connected with a DVCC pin of a chip U3; the 3 rd pin of the chip U21 is used as a COM output port of the metering module (4); the 4 th pin of the chip U21 is connected with the 2 nd pin of the port P5; and the 3 rd pin of the port P3 is used as a COM output port of the metering module (4).

5. The meter self-inspection wiring system suitable for the reactive compensation power distribution room is characterized in that the microprocessor module (5) comprises a resistor R4, a resistor R7, a resistor R11, resistors R76-R77, a ground resistor R80, a resistor R81, ground capacitors C5-C6, a ground capacitor C16, a ground capacitor C22, ground capacitors C50-C51, a ground capacitor C53, a ground capacitor C59, light emitting diodes D3-D4, a crystal oscillator X1, a crystal oscillator X3, ports P6-P8, a main control chip U2 with the model of STM32F407VGT6TR, a temperature and humidity sensing chip U7 with the model of SENS-SHT20-6, a touch switch chip U10 with the model of FSM4JSM and a storage chip U11 with the model of W25Q 256;

the PA2 pin of the chip U2 is connected with the 1 st pin of the port P6; the PA3 pin of the chip U2 is connected with the 2 nd pin of the port P6; the 3 rd pin of the port P6 is grounded; the PA4 pin of the chip U2 is connected with the other end of the resistor R7; the PA5 pin of the chip U2 is connected with the other end of the resistor R11; a PA6 pin of the chip U2 is respectively connected with the other ends of the grounding capacitor C22 and the resistor R10; the PA7 pin of the chip U2 is connected with the other end of the resistor R12; the PA13 pin of the chip U2 is connected with the 2 nd pin of the port P7; the PA14 pin of the chip U2 is connected with the 3 rd pin of the port P7; the 1 st pin of the port P7 is connected with a DVCC pin of a chip U3; the 5 th pin of the port P7 is grounded; the PC10 pin of the chip U2 is connected with the CLK pin of the chip U11; the PC11 pin of the chip U2 is connected with the DO/IO1 pin of the chip U11; the PC12 pin of the chip U2 is connected with the DI/IO0 pin of the chip U11; a PC14 pin of the chip U2 is respectively connected with one end of a crystal oscillator X1 and a grounding capacitor C14; a PC15 pin of the chip U2 is respectively connected with the other end of the crystal oscillator X1 and a grounding capacitor C15; the PE1 pin of the chip U2 is connected with the cathode of a diode D4; the anode of the diode D4 is connected with one end of a resistor R3; the other end of the resistor R3 is connected with a DVCC pin of a chip U3; the PE2 pin of the chip U2 is connected with the cathode of a diode D3; the anode of the diode D3 is connected with one end of a resistor R4; the other end of the resistor R4 is connected with a DVCC pin of a chip U3; the PB2 pin of the chip U2 is connected with a grounding resistor R80; the PB6 pin of the chip U2 is connected with one end of the resistor R76 and the SCL pin of the chip U7 respectively; a PB7 pin of the chip U2 is connected with one end of a resistor R77 and an SDA pin of the chip U7 respectively; the other end of the resistor R76 and the other end of the resistor R77 are both connected with a DVCC pin of a chip U3; the PB10 pin of the chip U2 is connected with the 3 rd pin of the port P8; the PB11 pin of the chip U2 is connected with the 4 th pin of the port P8; the 2 nd pin of the port P8 is grounded; the PD0 pin of the chip U2 is connected with the HOLD/IO3 pin of the chip U11; the PD1 pin of the chip U2 is connected with the WP/IO2 pin of the chip U11; a PH0 pin of the chip U2 is respectively connected with one end of a crystal oscillator X3 and a grounding capacitor C53; a PH1 pin of the chip U2 is respectively connected with the other end of the crystal oscillator X3 and a grounding capacitor C59; a BOOT0 pin of the chip U2 is connected with a grounding resistor R2; the NRST pin of the chip U2 is respectively connected with one end of a resistor R81, a grounded capacitor C6, the 1 st pin of the chip U10 and the 2 nd pin of the chip U10; the 3 rd pin and the 4 th pin of the chip U10 are both grounded; the other end of the resistor R81 is connected with a DVCC pin of a chip U3; the VCAP-1 pin of the chip U2 is connected with a grounding capacitor C51; the VCAP-2 pin of the chip U2 is connected with a grounding capacitor C16; the VSS pin of the chip U7 is grounded; the VDD pin of the chip U7 is respectively connected with a grounding capacitor C50 and a DVCC pin of the chip U3; the GND pin and the EP pin of the chip U11 are both grounded; the VCC pin of the chip U11 is connected with the grounding capacitor C5 and the DVCC pin of the chip U3 respectively.

6. The instrument self-checking wiring method suitable for the reactive compensation power distribution room is characterized by comprising the following steps of: