CN111010176A - 10kV power line distribution network mutual-reversal point power parameter synchronous acquisition and measurement system - Google Patents
10kV power line distribution network mutual-reversal point power parameter synchronous acquisition and measurement system Download PDFInfo
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Abstract
A10 kV power line distribution network reciprocal point power parameter synchronous acquisition metering system is characterized in that a high-voltage side metering device and a low-voltage side terminal are separately designed, an equipotential suspension high-voltage side metering device is designed on the 10kV high-voltage side and is respectively installed on each phase of a high-voltage side A, B, C, and the low-voltage side terminal is communicated with the high-voltage side metering device in a 470MHz micropower wireless communication mode; the metering device can simultaneously receive a GPS satellite clock and a Beidou satellite clock as time reference sources of the device; and after the performance analysis and optimization of the GPS satellite clock, the Beidou satellite clock and a crystal oscillator clock built in the metering device are utilized, high-precision second clock signal synchronous clock sources are generated by fusion. The system can realize automatic statistical analysis and index process monitoring of line loss of partial pressure, subareas, branch lines and subareas by accurately synchronizing data acquisition and data metering time of the voltage, current and the like of the reciprocal point of the distribution network of the 10kV power line, and improves the standard, intelligent, lean and automatic level of line loss management.
Description
Technical Field
The invention belongs to the technical field of power distribution networks, and particularly relates to a synchronous acquisition and metering system for power parameters of mutual reverse points of a 10kV power line distribution network.
Background
Along with economic construction's development, the power consumer requires more and more high to the power supply reliability, installs the contact switch between the distribution lines to realize each other falling of distribution lines and take, improve the flexibility of operation, reduce the power failure. In the early-stage construction process, due to the lack of technical means, a large number of mutually-reversed points in a distribution network line lack data acquisition and monitoring, based on lean management requirements, all nodes needing to ensure power grid power transmission, power utilization and power reversal firstly realize full coverage of electric energy acquisition and accurate synchronous metering data of each metering point, and line loss calculation analysis of distribution network distribution areas and distribution lines can be carried out only if complete synchronous metering data are provided.
In order to meet the metering requirement of mutual reverse points of a distribution network, a traditional solution is to install a combined voltage and current transformer at a collection point of a 10kV high-voltage line, but the outdoor high-voltage line has various application forms and complex field conditions, and the traditional combined transformer has overlarge volume and heavy weight and has high difficulty in installing and modifying the existing line; the traditional combined transformer electric energy metering scheme consumes more copper, iron and insulating materials, and has higher self-running loss; the possibility of ferromagnetic resonance exists, the potential safety hazard is more, the volume and the weight are large, and the installation is inconvenient.
In addition, a large number of connecting points of the operated ring main unit need to be supplemented with metering devices, the space of the ring main unit is limited, and the supplement of the metering devices can be realized only by transforming the ring main unit; the looped network cabinet is complex to transform and construct, needs a long time to have a power failure, and influences the power supply reliability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a synchronous acquisition and measurement system for power parameters of mutual reverse points of a 10kV power line distribution network. The precision and the reliability of the synchronous clock source of the metering device are greatly improved by adopting a Beidou and GPS double-satellite clock digital phase-locked synchronization mode.
The invention provides a 10kV power line distribution network reciprocal point power parameter synchronous acquisition metering system, which comprises a metering device arranged on a high-voltage side and a terminal positioned on a low-voltage side, wherein metering modules of the metering device are respectively arranged on an A phase and a C phase of the high-voltage side, a main control module is arranged on a B phase, and the terminal is in wireless communication connection with the metering device;
in the metering device, a current sampling signal directly enters a metering module at the A, C phase point, a voltage sampling signal is obtained by a high-voltage-dividing capacitor across phases, the capacitors of a voltage-dividing arm respectively take A, C phases as reference potentials, the obtained voltages are respectively transmitted to the metering modules of the A phase and the C phase, the electric power of the A phase and the C phase is calculated, the result is transmitted to a control module of the B phase through optical fibers, the main control module of the B phase accumulates the electric power of the A, C phase to obtain electric quantity data, time information is added into the electric quantity data, and the electric quantity data are transmitted to a terminal of a low-voltage side through a wireless channel;
the terminal comprises a main control unit, a storage unit, a display unit, a clock synchronization unit and a communication unit; the storage end of the main control unit is connected with the storage unit, the display end is connected with the display unit, and the clock synchronization unit is connected with the clock signal end of the main control unit; the clock synchronization unit simultaneously adopts a GPS satellite clock and a Beidou satellite clock as time reference sources, and a clock signal synchronization clock source is generated by fusing the GPS satellite clock, the Beidou satellite clock and a crystal oscillator clock built in the terminal.
As a further technical scheme of the invention, the terminal is in communication connection with the metering device in a 470MHz micropower wireless communication mode.
Furthermore, the clock synchronization unit receives the time service signals of the Beidou system and the GPS system respectively through the Beidou satellite receiver and the GPS satellite receiver, and comprises a frequency division circuit, a frequency division coefficient control circuit, a loop filter circuit, a phase comparison circuit and a correction pulse generation circuit;
the correction pulse generating circuit is used for generating a narrow pulse signal Ub by taking signals output by the Beidou satellite receiver and the GPS satellite receiver as input signals, wherein the pulse signal Ub is generated at the moment when the rising edge of the signal 1PPS arrives, the pulse width of the signal is far less than 1PPS period, and the phase at the moment is represented by the signal Ub;
the phase comparison circuit is used for detecting whether the pulse signal Ub appears in the first half period or the second half period of the PPS signal in real time so as to judge that the phase of the PPS signal is ahead or behind 1PPS signal, and a phase difference signal Ud is generated according to the detection result and is used as an input signal of the loop filter circuit;
the loop filter circuit is used for filtering noise and high-frequency components in an output signal Ud of the phase comparison circuit, and the output signal Uc is used as an input signal of the frequency division coefficient control circuit;
the frequency division coefficient control circuit is used for adjusting the frequency division coefficient according to the phase lag of the phase comparison result PPS signal or the phase lead of 1PPS, if the PPS is lagged or led for n times continuously, the frequency division coefficient can be kept continuous, and the next PPS can be advanced or delayed for n crystal oscillator periods; if the phase adjustment is not needed, calculating the frequency division coefficient according to fclk;
and the frequency division circuit is used for controlling the frequency division circuit to generate the PPS signal by taking the frequency division coefficient as an input signal, and adjusting the duration of the high level and the low level of the PPS signal.
Furthermore, the main control unit is constructed based on an ARM processor, and is used for carrying out operation processing on various metering data collected by the metering device on the high-pressure side and storing the various metering data into the storage unit in real time.
Further, the storage unit NAND FLASH is used as a storage medium to realize storage of data and programs.
Further, the display unit is composed of a color LCD graphic display for local data display and viewing.
Further, the communication unit comprises a wireless communication unit, a local communication unit and a remote communication unit, wherein the wireless communication unit is composed of a 470MHz micropower wireless module and is used for data communication between a terminal at a low-voltage side and a metering device at a high-voltage side; the local communication unit is in local communication with the handheld PDA equipment through Bluetooth and Zigbee; the remote communication unit is modularized and remotely communicates with the master station system in a GPRS/3G/4G communication mode to realize remote data transmission. The main station system collects data of the metering devices arranged at the mutual inversion points of the distribution networks, combines the power supply line network topology, and realizes automatic line loss statistical analysis and index process monitoring through the synchronous data collection of the metering points.
The invention has the beneficial effects that:
1. the metering device at the high-voltage side adopts the equipotential suspension sampling of the Rogowski coil, can be installed when a 10kV bus is electrified, does not need a line to be powered off, and improves the reliability of power supply. The high-pressure side suspension metering device is small in installation size, and has obvious environmental advantages of complex circuits on a rod and limited installation space.
2. Secondary wires are not needed, and the anti-electricity-theft capability is strong.
3. The high-voltage side suspension metering device and the low-voltage side terminal adopt a micropower wireless communication mode, and the high-voltage side line and the low-voltage side line are completely electrically isolated and have good safety.
4. The mutual-countdown metering device of the 10kV power line distribution network adopts Beidou and GPS double-satellite clock digital phase-locked synchronization, and when a satellite clock is effective, a crystal oscillator clock corrects the random error of a local clock on line according to a satellite clock error analysis model; when the satellite clock fails, a high-precision clock synchronization signal is continuously generated according to the error analysis model of the crystal oscillator clock, so that the precision and the reliability of the synchronous clock source of the metering device can be greatly improved.
5. According to the invention, by accurately synchronizing the data acquisition and data metering time of the voltage, the current and the like of the reciprocal point of the distribution network of the 10kV power line, the automatic statistical analysis and index process monitoring of the line loss of the voltage dividing, partitioning, branching and distribution areas can be realized, and the line loss management standardization, intellectualization, lean and automation levels are improved.
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FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of clock synchronization according to the present invention.
Detailed Description
Referring to fig. 1, the present embodiment provides a synchronous acquisition and measurement system for power parameters of reciprocal points of a distribution network of a 10kV power line, in which a high-voltage side measurement device and a low-voltage side terminal are separately designed, and an equipotential suspension high-voltage side measurement device is designed on the high-voltage side of 10kV and is respectively installed on each phase of A, B, C on the high-voltage side, and the low-voltage side terminal communicates with the high-voltage side measurement device in a 470MHz micropower wireless communication manner.
The principle and structure of the high-pressure side metering device will be explained in detail below.
Most neutral points of the 10kV power distribution network are not grounded, zero sequence current does not pass through the system, and therefore the electric energy metering can be carried out by using a two-element method. For a neutral ungrounded system, the following relation is satisfied:
i.e., total three-phase power or power can be obtained by detecting the AB, the CB voltage and the A, C phase current.
The system adopts an equipotential suspension technology, taking an A phase as an example, a current sampling signal directly enters a metering module at the A phase potential; the voltage sampling signal is obtained by a high-voltage-dividing capacitor across phases, the capacitor CL of a voltage-dividing arm takes the phase A as a reference potential, the voltage obtained on the CL is directly transmitted to the phase A metering module, and the phase A metering module calculates the voltage
、
And the multiplied electric power result is transmitted to the B-phase main control module through an optical fiber, and the C-phase metering module has the same principle as the A-phase metering module. The optical fiber mode has the advantages that 10kV lines are isolated from one another, and the electrical safety is high.
After the power supply on each phase circuit board of the high-voltage end A, B, C adopts an independent high-voltage capacitive voltage divider to get power, alternating current-direct current conversion is realized through the power supply module. The high-voltage metering device can work as long as the 10kV bus has voltage.
The B-phase main control module sums the results calculated by the A, C-phase metering module to obtain power data, accumulates the power to obtain electric quantity data, receives voltage and current information transmitted by A, C phases, adds time information into the data transmitted by A, C phases, analyzes and arranges the data, and transmits the data to the low-voltage side terminal through a 470MHz micropower wireless channel, and the low-voltage side terminal can realize local data display and remote communication with the master station system.
The principle and structure of the low side terminal will be described in detail below.
The low-voltage side terminal mainly comprises a main control unit, a storage unit, a display unit, a clock synchronization unit, a wireless communication unit, a local communication unit and a remote communication unit.
The main control unit is constructed based on a high-performance ARM processor, and is used for performing operation processing on various metering data acquired by the high-pressure side metering device and storing the various metering data into the storage unit in real time.
The storage unit NAND FLASH is used as a storage medium to realize storage of data and programs.
The display unit is composed of a color LCD graphic display and is used for local data display and viewing.
The clock synchronization unit can simultaneously receive a GPS satellite clock and a Beidou satellite clock as time reference sources of the device; and after the performance analysis and optimization of the GPS satellite clock, the Beidou satellite clock and a crystal oscillator clock built in the low-voltage side terminal are utilized, high-precision second clock signal synchronous clock source is generated by fusion.
The wireless communication unit mainly comprises a 470MHz micropower wireless module, and realizes data communication between the low-voltage side terminal and the high-voltage side metering device.
The local communication unit can carry out local communication with the handheld PDA equipment through Bluetooth and Zigbee, and the field operation and maintenance of the metering device are facilitated.
The remote communication unit adopts a modular design, is convenient to replace, and can remotely communicate with the master station system in a GPRS/3G/4G communication mode to realize remote data transmission. The main station system can realize automatic line loss statistical analysis and index process monitoring by collecting data of the metering devices arranged at the mutual inversion points of the distribution networks, combining the power supply line network topology and simultaneously collecting data of the metering points.
As shown in fig. 2, the distribution network reciprocal countdown metering device can simultaneously receive a GPS satellite clock and a beidou satellite clock as time reference sources of the device; and after the performance analysis and optimization of the GPS satellite clock, the Beidou satellite clock and a crystal oscillator clock built in the metering device are utilized, high-precision second clock signal synchronous clock sources are generated by fusion.
The high-precision satellite synchronous clock specifically realizes the principle that:
the 1PPS is a second clock signal obtained by respectively receiving time service signals of a Beidou system and a GPS system by a Beidou satellite receiver and a GPS satellite receiver and then carrying out performance analysis and optimization. In fig. 2, fclk is a crystal frequency, and PPS is a corrected high-precision synchronous second clock signal.
The function mainly comprises a frequency dividing circuit, a frequency dividing coefficient control circuit, a loop filter circuit, a phase comparison circuit and a correction pulse generating circuit,
in order to compare the advanced or delayed 1PPS signals of the PPS signals, firstly, a second clock signal which is obtained by optimizing the signals output by the Beidou satellite receiver and the GPS satellite receiver through performance analysis is used as an input signal of a correction pulse generating circuit to generate a narrow pulse signal Ub, wherein the pulse signal Ub is generated only at the moment when the rising edge of the signal 1PPS arrives, and the pulse width of the signal is far less than 1PPS period. Since Ub is a narrow pulse-per-second signal and it occurs only at the beginning of the 1PPS rising edge, the phase of the second clock can be represented by signal Ub.
The specific function of the phase comparison circuit is to continuously detect whether the signal Ub appears in the first half period or the second half period of the PPS signal, so as to judge whether the phase of the PPS signal is ahead or behind the phase of the 1PPS signal, and generate a phase difference signal Ud as an input signal of the loop filter circuit according to the detection result.
The loop filter circuit mainly functions to filter noise and high-frequency components in an output signal Ud of the phase comparison circuit, improve the tracking performance of the digital phase-locked loop, and output a signal Uc as an input signal of the frequency division coefficient control circuit.
The main function of the frequency division coefficient control circuit is to adjust the frequency division coefficient of the circuit in real time according to the phase comparison result provided by the loop filter circuit. The division factor is adjusted in accordance with the phase comparison result PPS signal phase lag or lead by 1PPS phase. If the PPS is lagging or leading n times in succession, the division factor will remain continuous, and the next PPS will be advanced or delayed by n crystal periods. If no phase adjustment is required, the division factor is calculated as fclk.
The frequency division coefficient generated by the frequency division coefficient control circuit is used as an input signal of the frequency division circuit and is used for controlling the frequency division circuit to generate the PPS signal and dynamically adjusting the duration of the high level and the low level of the PPS signal.
The system can realize automatic statistical analysis and index process monitoring of line loss of partial pressure, subareas, branch lines and subareas by accurately synchronizing data acquisition and data metering time of the voltage, the current and the like of the reciprocal point of the distribution network of the 10kV power line, and improve the standard, intelligent, lean and automatic level of line loss management.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (7)
1. A10 kV power line distribution network reciprocal point power parameter synchronous acquisition metering system is characterized by comprising a metering device arranged on a high-voltage side and a terminal positioned on a low-voltage side, wherein metering modules of the metering device are respectively installed on an A phase and a C phase of the high-voltage side, a main control module is installed on a B phase, and the terminal is in wireless communication connection with the metering device;
in the metering device, a current sampling signal directly enters a metering module at the A, C phase point, a voltage sampling signal is obtained by a high-voltage-dividing capacitor crossing phases, the capacitors of a voltage-dividing arm respectively take A, C phases as reference potentials, the obtained voltages are respectively transmitted to the metering modules of the A phase and the C phase, the electric power of the A phase and the C phase is calculated, the result is transmitted to a control module of the B phase through an optical fiber, the main control module of the B phase accumulates the electric power of the A, C phase to obtain electric quantity data, time information is added into the electric quantity data, and the electric quantity data are transmitted to a terminal of a low-voltage side through a wireless channel;
the terminal comprises a main control unit, a storage unit, a display unit, a clock synchronization unit and a communication unit; the storage end of the main control unit is connected with the storage unit, the display end is connected with the display unit, and the clock synchronization unit is connected with the clock signal end of the main control unit; the clock synchronization unit simultaneously adopts a GPS satellite clock and a Beidou satellite clock as time reference sources, and a clock signal synchronization clock source is generated by fusing the GPS satellite clock, the Beidou satellite clock and a crystal oscillator clock built in the terminal.
2. The system for synchronously acquiring and metering the power parameters of the mutual reverse points of the distribution network of the 10kV power line as claimed in claim 1, wherein the terminal is in communication connection with the metering device through a 470MHz micropower wireless communication mode.
3. The 10kV power line distribution network mutual-inversion-point power parameter synchronous acquisition and metering system as claimed in claim 1, wherein the clock synchronization unit receives time service signals of a Beidou system and a GPS system respectively through a Beidou satellite receiver and a GPS satellite receiver, and comprises a frequency division circuit, a frequency division coefficient control circuit, a loop filter circuit, a phase comparison circuit and a correction pulse generation circuit;
the correction pulse generating circuit is used for generating a narrow pulse signal Ub by taking signals output by the Beidou satellite receiver and the GPS satellite receiver as input signals, wherein the pulse signal Ub is generated at the moment when the rising edge of the signal 1PPS arrives, the pulse width of the signal is far less than 1PPS period, and the phase at the moment is represented by the signal Ub;
the phase comparison circuit is used for detecting whether the pulse signal Ub appears in the first half period or the second half period of the PPS signal in real time so as to judge that the phase of the PPS signal is ahead or behind the phase of the 1PPS signal, and a phase difference signal Ud is generated according to the detection result and is used as an input signal of the loop filter circuit;
the loop filter circuit is used for filtering noise and high-frequency components in an output signal Ud of the phase comparison circuit, and the output signal Uc is used as an input signal of the frequency division coefficient control circuit;
the frequency division coefficient control circuit is used for adjusting the frequency division coefficient according to the phase lag of the phase comparison result PPS signal or the phase lead of 1PPS, if the PPS is lagged or led for n times continuously, the frequency division coefficient is kept continuous, and the next PPS is advanced or delayed for n crystal oscillator periods; if the phase adjustment is not needed, calculating the frequency division coefficient according to fclk;
and the frequency division circuit is used for controlling the frequency division circuit to generate the PPS signal by taking the frequency division coefficient as an input signal, and adjusting the duration of the high level and the low level of the PPS signal.
4. The system of claim 1, wherein the master control unit is constructed based on an ARM processor, and is configured to perform operation processing on various types of metering data collected by the high-voltage side metering device and store the various types of metering data in the storage unit in real time.
5. The system for synchronously acquiring and metering the mutual reverse point power parameters of the 10kV power line distribution network according to claim 1 or 4, wherein the storage unit adopts NAND FLASH as a storage medium to realize the storage of data and programs.
6. The system of claim 1, wherein the display unit comprises a color LCD graphic display for displaying and viewing local data.
7. The 10kV power line distribution network reciprocal point power parameter synchronous acquisition and metering system as claimed in claim 1, wherein the communication unit comprises a wireless communication unit, a local communication unit and a remote communication unit, the wireless communication unit is composed of a 470MHz micropower wireless module and is used for data communication between a terminal at a low voltage side and a metering device at a high voltage side; the local communication unit is in local communication with the handheld PDA equipment through Bluetooth and Zigbee; the remote communication unit is modularized and remotely communicates with the master station system in a GPRS/3G/4G communication mode to realize remote data transmission; the main station system collects data of the metering devices arranged at the mutual inversion points of the distribution networks, combines the power supply line network topology, and realizes automatic line loss statistical analysis and index process monitoring through the synchronous data collection of the metering points.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112486010A (en) * | 2020-11-25 | 2021-03-12 | 天津凯发电气股份有限公司 | Novel time service method for urban rail transit traction power supply secondary equipment |
| WO2022179309A1 (en) * | 2021-02-25 | 2022-09-01 | 乐鑫信息科技（上海）股份有限公司 | Clock management apparatus, clock frequency division module and system-on-chip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216510A (en) * | 2008-01-02 | 2008-07-09 | 武汉国测科技股份有限公司 | High voltage electric energy direct metered system and method |
| CN201294513Y (en) * | 2008-09-26 | 2009-08-19 | 华东电网有限公司 | System for synchronizing whole network time based on satellite common vision |
| CN102880045A (en) * | 2012-09-17 | 2013-01-16 | 南京澳德思电气有限公司 | Synchronous clock time output system based on global positioning system (GPS), compass satellite, optical fiber B code and high-accuracy constant-temperature crystal oscillator |
| CN203479896U (en) * | 2013-09-25 | 2014-03-12 | 国家电网公司 | Directly access type high voltage electric energy metering system |
| CN107102201A (en) * | 2017-04-01 | 2017-08-29 | 国网山东省电力公司枣庄供电公司 | A kind of integrated high-pressure electric power meter |
-
2020
- 2020-03-09 CN CN202010157476.1A patent/CN111010176A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216510A (en) * | 2008-01-02 | 2008-07-09 | 武汉国测科技股份有限公司 | High voltage electric energy direct metered system and method |
| CN201294513Y (en) * | 2008-09-26 | 2009-08-19 | 华东电网有限公司 | System for synchronizing whole network time based on satellite common vision |
| CN102880045A (en) * | 2012-09-17 | 2013-01-16 | 南京澳德思电气有限公司 | Synchronous clock time output system based on global positioning system (GPS), compass satellite, optical fiber B code and high-accuracy constant-temperature crystal oscillator |
| CN203479896U (en) * | 2013-09-25 | 2014-03-12 | 国家电网公司 | Directly access type high voltage electric energy metering system |
| CN107102201A (en) * | 2017-04-01 | 2017-08-29 | 国网山东省电力公司枣庄供电公司 | A kind of integrated high-pressure electric power meter |
Non-Patent Citations (2)
| Title |
|---|
| 李振华: ""高压组合型电子式电流电压互感器"", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
| 王辉，毛莹: ""环网柜互倒点安装电能计量装置的应用"", 《江西电力》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112486010A (en) * | 2020-11-25 | 2021-03-12 | 天津凯发电气股份有限公司 | Novel time service method for urban rail transit traction power supply secondary equipment |
| WO2022179309A1 (en) * | 2021-02-25 | 2022-09-01 | 乐鑫信息科技（上海）股份有限公司 | Clock management apparatus, clock frequency division module and system-on-chip |
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Application publication date: 20200414 |