CN113037330A - Accurate positioning device for transformer area capable of generating medium-voltage carrier signal - Google Patents

Accurate positioning device for transformer area capable of generating medium-voltage carrier signal Download PDF

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Publication number
CN113037330A
CN113037330A CN202110240633.XA CN202110240633A CN113037330A CN 113037330 A CN113037330 A CN 113037330A CN 202110240633 A CN202110240633 A CN 202110240633A CN 113037330 A CN113037330 A CN 113037330A
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CN
China
Prior art keywords
module
medium
voltage
signal
carrier signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110240633.XA
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Chinese (zh)
Inventor
徐剑英
李亮
高庆欢
滕伟涛
曾令斌
郭相泉
李显涛
尹燕兵
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Qingdao Topscomm Communication Co Ltd
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Qingdao Topscomm Communication Co Ltd
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Application filed by Qingdao Topscomm Communication Co Ltd filed Critical Qingdao Topscomm Communication Co Ltd
Priority to CN202110240633.XA priority Critical patent/CN113037330A/en
Publication of CN113037330A publication Critical patent/CN113037330A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/542—Systems for transmission via power distribution lines the information being in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The invention discloses a station area accurate positioning device capable of generating medium-voltage carrier signals, which comprises a control module, a remote communication module with a GPS positioning function, a medium-voltage carrier signal generation module, a high-speed 485 communication module, an alternating current zero-crossing detection module and a power supply module. The platform area positioning is realized through a module with a GPS positioning function, and the error range is less than 50 meters. The variable relation identification of the medium-voltage line is realized by sending a 20Hz-2KHz medium-voltage carrier signal at the low-voltage side of the transformer area and transmitting the medium-voltage carrier signal at a 10kV medium-voltage line by using a power frequency transformer. Compared with the conventional medium-voltage carrier communication device, the device can be installed without power failure of a medium-voltage line, and plays an important role in realizing accurate positioning of the platform area topology and judging the variable relation of the medium-voltage line.

Description

Accurate positioning device for transformer area capable of generating medium-voltage carrier signal
Technical Field
The invention relates to the field of power line carrier communication and control, in particular to a station area accurate positioning device capable of generating medium-voltage carrier signals.
Background
At present, the problems that the affiliation relationship between a transformer and a medium-voltage line is unclear, a new line-to-line relationship cannot be obtained in time after the operation mode is changed, the position information of a background area of a transformer area transformation and migration cannot be updated in time and the like can be encountered in the power industry in the operation process of a power distribution network. The basic information of the medium-voltage line is disordered, the load switching is frequent, the line variation relation is fuzzy, and the station area position information is wrong, so that the calculation of the synchronous line loss can not obtain a real basis.
Generally, the station area position can be obtained through a traditional manual line patrol checking mode, however, the mode is time-consuming and labor-consuming and low in efficiency, and due to the fact that the connection relation of partial line spaces is complex, manual line patrol is difficult to accurately identify. Another way for positioning the platform area position is to install a signal coupling device on the 10kV medium voltage line to realize the positioning of the platform area position, but the installation of the signal coupling device is high in cost, and the 10kV medium voltage line needs to be installed in a power failure mode, so that the method is not suitable for large-scale popularization and application.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the invention aims to provide the station area accurate positioning device capable of generating the medium-voltage carrier signal, wherein the low-voltage side of the station area sends the medium-voltage carrier signal of 20Hz-2KHz, and the power frequency transformer is used for transmitting the medium-voltage carrier signal in a 10kV medium-voltage line, so that the DPS of the station area is accurately positioned, and the error range of the DPS is less than 50 meters. Compared with the conventional medium-voltage carrier communication device, the device can be installed without power failure of a medium-voltage line, is low in cost, does not need to consume manpower, can quickly locate the platform area position, is accurate in result, and plays an important role in realizing topology accurate location of the platform area and judgment of the variable relation of the medium-voltage line.
In order to solve the above problems, the present invention provides a station area accurate positioning device capable of generating medium-voltage carrier signals, which comprises a power module, a remote communication module with a GPS positioning function, a high-speed 485 communication module, an alternating current zero-crossing detection module, a control module, and a medium-voltage carrier signal generation module, wherein:
the power supply module supplies power to the accurate positioning device of the medium-voltage carrier signal;
the remote communication module is provided with a GPS positioning energy supply and is used for acquiring GPS positioning information, receiving a control signal and sending the control signal to the control module;
the high-speed 485 communication module is used for local communication, receiving a control signal and sending the control signal to the control module;
the alternating current zero-crossing detection module detects a zero-crossing signal and sends the zero-crossing signal to the control module;
the control module receives the control signal and outputs the control signal to the medium-voltage carrier signal generation module according to the zero-crossing signal;
and the medium-voltage carrier signal generation module generates a low-frequency medium-voltage carrier signal according to the control signal.
Furthermore, a core controller of the control module adopts a high-performance PIC32 series 32-bit microcontroller, and can output a PWM control signal with low frequency and controllable duty ratio according to different control signals and the control of a zero-crossing signal.
Furthermore, the core module of the remote communication module with the GPS positioning function adopts an EC20 series EC20CEFILG module, satellite searching and positioning can be realized through an external GPS communication active antenna, position information can be transmitted to the control module, meanwhile, 4G full-network communication is considered, and a designated server is logged in to remotely receive a control command and upload the position information.
Furthermore, a driving part of the medium-voltage carrier signal generation module adopts a multifunctional integrated optocoupler driver ACPL-332J, the ACPL-332J has a current driving capability of outputting 2.5A and has an overcurrent detection self-locking function, a sending part consists of an IGBT (insulated gate bipolar translator), a rectifier bridge, an ampere-standard capacitor, a resistor, a TVS (transient voltage suppressor) tube and a relay, and a low-frequency and duty ratio controllable medium-voltage carrier signal is output according to a control signal.
The communication frequency range of the medium-voltage carrier signal is 20Hz-2KHz, the communication frequency is determined by the frequency of the control signal output by the control unit, and the signal intensity is determined by the duty ratio of the control signal.
Furthermore, the high-speed 485 communication module adopts a 485 chip with wide voltage input and low power consumption, and supports the communication speed of 115200 bps.
Furthermore, the alternating current zero-crossing detection module comprises an input coupling circuit and an output coupling circuit, and can quickly and accurately detect the zero-crossing signal of the phase voltage or the line voltage, realize strong and weak current isolation and ensure the reliability of system operation.
Furthermore, the power supply module adopts an isolation switch power supply, the input voltage supports 176VAC-456VAC, and isolated 12V, 5V, 4V, 3.3V, 16V and-8V direct-current voltages can be output for normal work and use of each submodule of the device.
The invention has the beneficial effects that:
1. by adopting an EC20CEFILG module of an EC20 series, the accurate positioning of the platform area GPS can be realized, and the error range is less than 50 meters.
2. The low-frequency medium-voltage carrier signal can be transmitted through a transformer to realize that a 10kV medium-voltage line can be installed without power failure.
Drawings
Fig. 1 is a block diagram of an application of the device for accurately positioning a cell in which a medium-voltage carrier signal can occur according to the present invention.
Detailed Description
The present invention will be further described with reference to fig. 1 and the embodiments, so as to specifically describe the system scheme of the present invention. The following examples are only for illustrating the system scheme of the present invention more clearly, and should not be taken as limiting the scope of the present invention.
The invention relates to a station area accurate positioning device capable of generating medium-voltage carrier signals, which comprises: the device comprises a control module, a remote communication module with a GPS positioning function, a medium-voltage carrier signal generation module, a high-speed 485 communication module, an alternating current zero-crossing detection module and a power supply module.
The accurate positioning device for the transformer area capable of generating the medium-voltage carrier signal is powered by a power supply module, and GPS positioning information is acquired through a remote communication module with a GPS positioning function. The control command is received through a remote communication module with a GPS positioning function or a high-speed 485 communication module, and the control module outputs a control signal to a medium-voltage carrier signal generation module to generate a low-frequency medium-voltage carrier signal according to a zero-crossing signal detected by an alternating current zero-crossing detection module after receiving the command. The signal communication frequency range is 20Hz-2KHz, the communication frequency is determined by the frequency of the control signal output by the control unit, and the signal intensity is determined by the duty ratio of the control signal. Wherein:
the control module core controller adopts a high-performance PIC32 series 32-bit microcontroller, and can control and output a low-frequency PWM control signal with controllable duty ratio according to different control commands and by combining with a zero-crossing signal.
The remote communication module with the GPS positioning function adopts an EC20CEFILG module of an EC20 series as a core module, can realize satellite searching and positioning by externally connecting a GPS communication active antenna, and can transmit position information to a control module. Meanwhile, the module gives consideration to 4G full-network communication, and can remotely receive a control command and upload position information when logging in a specified server.
The driving part of the medium-voltage carrier signal generation module adopts a multifunctional integrated optocoupler driver ACPL-332J, and the ACPL-332J has the current driving capability of outputting 2.5A and has the over-current detection self-locking function. The transmitting part consists of an IGBT, a rectifier bridge, a safety capacitor, a resistor, a TVS tube and a relay, and outputs a low-frequency and duty ratio-controllable medium-voltage carrier signal according to a control signal.
The high-speed 485 communication module adopts a 485 chip with wide voltage input and low power consumption, and supports the communication speed of 115200 bps.
The alternating current zero-crossing detection module can quickly and accurately detect the zero-crossing signal of the phase voltage or the line voltage, the input and output coupling circuits realize strong and weak current isolation, and the reliability of system operation is ensured.
The power module adopts an isolation switch power supply, the input voltage supports 176VAC-456VAC, and isolated 12V, 5V, 4V, 3.3V, 16V and-8V direct-current voltages can be output for normal work and use of each submodule of the device.
The station area accurate positioning device capable of generating the medium-voltage carrier signal specifically works as follows:
as shown in fig. 1, two 10kV medium voltage lines 1 and 10kV medium voltage lines 2 under one substation and one transformer 1 are selected, the transformer 1 is provided with a change-over switch, and the switch change-over transformer 1 can be powered by the 10kV medium voltage line 1 or the 10kV medium voltage line 2;
installing specific signal receiving devices on the secondary sides of the CT of the 10kV medium-voltage line 1 and the 10kV medium-voltage line 2 of the transformer substation;
the change-over switch selects a 10kV medium-voltage line 1 to supply power to a transformer 1, and a platform area accurate positioning device capable of generating medium-voltage carrier signals is arranged below the transformer 1;
reading GPS position information of a station area accurate positioning device capable of generating medium-voltage carrier signals through a debugging command, and comparing the GPS position information with actual position information of the transformer 1, wherein the error is less than 50 meters;
controlling a platform area accurate positioning device capable of generating medium-voltage carrier signals to send medium-voltage carrier signals under a transformer 1, and observing that the secondary side of a 10kV medium-voltage line 1CT receives obvious medium-voltage carrier signals and the secondary side of a 10kV medium-voltage line 2CT does not receive obvious medium-voltage carrier signals;
the method comprises the following steps that a 10kV medium-voltage line 2 is selected by a change-over switch to supply power to a transformer 1, a platform area accurate positioning device capable of generating medium-voltage carrier signals is controlled under the transformer 1 to send the medium-voltage carrier signals, the fact that the secondary side of the 10kV medium-voltage line 2CT receives obvious medium-voltage carrier signals is observed, and the secondary side of the 10kV medium-voltage line 1CT does not receive obvious medium-voltage carrier signals is observed;
in this embodiment, a test and verification are performed on the station area accurate positioning device capable of generating the medium-voltage carrier signal in the present invention by using actual operation on site. The accurate positioning of the transformer area can be realized by utilizing the transformer area accurate positioning device capable of generating the medium-voltage carrier signal, the error range is less than 50 meters, the accurate identification of the line-to-line relation can also be realized, and the power failure-free installation is simple and efficient.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.

Claims (8)

1. The utility model provides a can take place platform district accurate positioning device of middling pressure carrier signal, contains power module, takes GPS locate function's remote communication module, high-speed 485 communication module, exchanges zero passage detection module, control module, middling pressure carrier signal and takes place the module, its characterized in that:
the power supply module supplies power to the accurate positioning device of the medium-voltage carrier signal;
the remote communication module with the GPS positioning function is used for acquiring GPS positioning information, receiving a control signal and sending the control signal to the control module;
the high-speed 485 communication module is used for local communication, receiving a control signal and sending the control signal to the control module;
the alternating current zero-crossing detection module detects a zero-crossing signal and sends the zero-crossing signal to the control module;
the control module receives the control signal and outputs the control signal to the medium-voltage carrier signal generation module according to the zero-crossing signal;
the medium-voltage carrier signal generating module is used for generating a low-frequency medium-voltage carrier signal according to the control signal;
the control module is respectively connected with the power supply module, the remote communication module with the GPS positioning function, the high-speed 485 communication module, the alternating current zero-crossing detection module and the medium-voltage carrier signal generation module.
2. The device for accurately positioning the distribution room where the medium-voltage carrier signal can occur as set forth in claim 1, wherein the core controller of the control module is a high-performance PIC32 series 32-bit microcontroller, and can output the low-frequency PWM control signal with the controllable duty ratio according to different control signals in combination with the zero-crossing signal.
3. The device as claimed in claim 1, wherein the core module of the remote communication module with GPS positioning function is an EC20CEFILG module of EC20 series, and the satellite searching and positioning can be realized by external GPS communication active antenna, and the location information can be transmitted to the control module, and meanwhile, the device is compatible with 4G full internet communication, and can remotely receive control commands and upload location information by logging in a designated server.
4. The device for accurately positioning the transformer area capable of generating the medium-voltage carrier signals according to claim 1, wherein a driving part of the medium-voltage carrier signal generating module adopts a multifunctional integrated optical coupler driver ACPL-332J, the ACPL-332J has a current driving capability of outputting 2.5A and has an overcurrent detection self-locking function, a sending part comprises an IGBT, a rectifier bridge, a safety capacitor, a resistor, a TVS (transient voltage suppressor) and a relay, and the medium-voltage carrier signal with a low frequency and a controllable duty ratio is output according to a control signal.
5. The apparatus as claimed in claim 4, wherein the communication frequency of the medium voltage carrier signal is in the range of 20Hz-2KHz, the communication frequency is determined by the frequency of the control signal outputted from the control unit, and the signal strength is determined by the duty ratio of the control signal.
6. The device as claimed in claim 1, wherein the high-speed 485 communication module uses a 485 chip with wide voltage input and low power consumption, and supports 115200bps communication rate.
7. The device for accurately positioning the transformer area capable of generating the medium-voltage carrier signal according to claim 1, wherein the alternating current zero-crossing detection module comprises an input coupling circuit and an output coupling circuit, and can quickly and accurately detect the zero-crossing signal of the phase voltage or the line voltage, so that strong and weak current isolation is realized, and the reliability of system operation is ensured.
8. The device for accurately positioning the transformer area capable of generating the medium-voltage carrier signals according to claim 1, wherein the power module adopts an isolation switch power supply, the input voltage supports 176VAC-456VAC, and isolated 12V, 5V, 4V, 3.3V, 16V and 8V direct-current voltages can be output for normal operation of all sub-modules of the device.
CN202110240633.XA 2021-03-04 2021-03-04 Accurate positioning device for transformer area capable of generating medium-voltage carrier signal Withdrawn CN113037330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110240633.XA CN113037330A (en) 2021-03-04 2021-03-04 Accurate positioning device for transformer area capable of generating medium-voltage carrier signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110240633.XA CN113037330A (en) 2021-03-04 2021-03-04 Accurate positioning device for transformer area capable of generating medium-voltage carrier signal

Publications (1)

Publication Number Publication Date
CN113037330A true CN113037330A (en) 2021-06-25

Family

ID=76468039

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110240633.XA Withdrawn CN113037330A (en) 2021-03-04 2021-03-04 Accurate positioning device for transformer area capable of generating medium-voltage carrier signal

Country Status (1)

Country Link
CN (1) CN113037330A (en)

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Application publication date: 20210625