CN114050656A - Sensing control terminal and monitoring point arrangement method of distributed energy distribution network - Google Patents

Sensing control terminal and monitoring point arrangement method of distributed energy distribution network Download PDF

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Publication number
CN114050656A
CN114050656A CN202111408265.1A CN202111408265A CN114050656A CN 114050656 A CN114050656 A CN 114050656A CN 202111408265 A CN202111408265 A CN 202111408265A CN 114050656 A CN114050656 A CN 114050656A
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China
Prior art keywords
module
control terminal
communication
interface
distribution network
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CN202111408265.1A
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Chinese (zh)
Inventor
徐全
袁智勇
雷金勇
刘胤良
林心昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
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CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
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Priority to CN202111408265.1A priority Critical patent/CN114050656A/en
Publication of CN114050656A publication Critical patent/CN114050656A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Abstract

The invention relates to the technical field of measurement and control protection of an electric power system, and discloses a sensing control terminal and a monitoring point arrangement method of a distributed energy distribution network. The sensing control terminal comprises a communication module, a multi-core CPU module, an external interface module, a fault traveling wave detection module, an analog/digital conversion module, a mutual inductance module and a power supply module; the sensing terminal adopts a single-CPU hardware architecture, the multi-core CPU module realizes synchronous sampling, data transmission and processing according to timing interruption, the hardware circuit design is simplified, the cost can be effectively reduced, and the fault traveling wave detection module and the mutual inductance module are connected by adopting the aviation plug for interface connection, so that the space can be effectively saved, the terminal volume is reduced, and the sensing terminal can be widely applied to various application scenes of a power distribution network.

Description

Sensing control terminal and monitoring point arrangement method of distributed energy distribution network
Technical Field
The invention relates to the technical field of measurement and control protection of a power system, in particular to a perception control terminal and a monitoring point arrangement method of a distributed energy distribution network.
Background
With the access of flexible loads such as large-scale distributed power supplies and electric vehicles to the power distribution network, the running state of the power distribution network becomes more complex, the noise becomes more serious, the trend changes more frequently, and the safe and reliable running of the power distribution network is greatly threatened. In order to realize safe and reliable operation of the power distribution network, the state of the power distribution network needs to be comprehensively monitored by adopting a situation sensing terminal.
The existing perception control terminal adopts a multi-CPU framework and adopts an FPGA for synchronous sampling, so that the defects of high cost and large volume exist. The installation environment of the power distribution network is different from that of the main network, the main network is installed in a standard screen cabinet of a transformer substation on the installation position, and the power distribution network can be installed on a switch cabinet and a wall-mounted cabinet of a power distribution room or even a tower, so that the sensing control terminal with the large size is not suitable for being applied to the power distribution network. The applicability of the existing perception control terminal in the application scene of the power distribution network is poor due to the defects.
Disclosure of Invention
The invention provides a sensing control terminal and a monitoring point arrangement method of a distributed energy distribution network, and solves the technical problems of high cost and large size of the conventional sensing control terminal.
The invention provides a perception control terminal in a first aspect, which comprises a communication module, a multi-core CPU module, an external interface module, a fault traveling wave detection module, an analog-to-digital conversion module, a mutual inductance module and a power module, wherein the multi-core CPU module is used for receiving a fault traveling wave signal;
the output end of the fault traveling wave detection module is connected with the external interface module, and the input end of the fault traveling wave detection module is connected with the first aviation plug and is used for detecting fault traveling waves at an installation point;
the output end of the mutual inductance module is connected with the external interface module through the analog-to-digital conversion module, and the input end of the mutual inductance module is connected with a second aviation plug and used for measuring voltage, current and protective current;
the multi-core CPU module is connected with the external interface module and the communication module and is used for controlling the analog/digital conversion module to synchronously sample and transmit and process data according to the timing interruption;
and the power supply module is used for supplying power to the communication module, the multi-core CPU module, the external interface module, the fault traveling wave detection module, the analog/digital conversion module and the mutual inductance module.
According to an implementation manner of the first aspect of the present invention, the multi-core CPU module includes a DSP core and an ARM core that are communicatively connected;
the DSP core is connected with the external interface module, and the ARM core is connected with the communication module.
According to one enabling manner of the first aspect of the present invention, the communication module includes an optical fiber communication unit, a wireless communication unit, and a communication control unit;
the optical fiber communication unit is connected with the first communication interface through a third aviation plug and is used for carrying out wired communication with equipment connected with the first communication interface;
the communication control unit is connected with the second communication interface through a fourth aviation plug and used for sending a control signal to equipment connected with the second communication interface.
According to one enabling mode of the first aspect of the present invention, the first communication interface comprises an RJ45 interface and a fiber optic interface; the second communication interface comprises an R485 interface, an RS232 interface and an RJ45 interface.
According to a manner that can be realized by the first aspect of the present invention, the present invention further comprises a data encryption module;
the input end of the data encryption module is connected with the optical fiber communication unit and the wireless communication unit, and the output end of the data encryption module is connected with the ARM core.
According to an implementation manner of the first aspect of the present invention, the system further comprises a GPS module;
the GPS module is connected with the ARM core and used for outputting an equidistant synchronous sampling pulse signal;
the ARM core is specifically used for receiving the equal interval synchronous sampling pulse signals, correcting the time deviation of the timing interruption according to the interval synchronous sampling pulse signals, and sending out an A/D synchronous sampling signal according to the corrected timing interruption;
the analog/digital conversion module is specifically used for adopting and processing the data of the mutual inductance module according to the A/D synchronous sampling signal to obtain digital quantity data;
the DSP core is specifically configured to perform phasor calculation on the digital quantity data transmitted by the analog-to-digital conversion module.
According to one possible implementation manner of the first aspect of the present invention, the power module is in a dual power supply mode, and is an ac or dc power supply.
According to one possible implementation manner of the first aspect of the invention, the input end of the power supply module is connected with the fifth aviation plug.
The invention provides a monitoring point arrangement method for a distributed energy distribution network, which comprises the following steps:
determining access capacity corresponding to each node of the distributed energy distribution network, wherein the nodes comprise a distributed energy grid-connected point, a flexible load grid-connected point, an energy storage grid-connected point and a public connection point;
and taking the node with the access capacity larger than the preset capacity threshold value as a primary monitoring point, and installing the perception control terminal at the primary monitoring point in any one of the above modes.
According to an implementable manner of the second aspect of the invention, the method further comprises:
and taking the node with the access capacity not larger than a preset capacity threshold value as a secondary monitoring point, and installing a sensor for the power distribution network at the secondary monitoring point.
According to the technical scheme, the invention has the following advantages:
the sensing control terminal comprises a communication module, a multi-core CPU module, an external interface module, a fault traveling wave detection module, an analog/digital conversion module, a mutual inductance module and a power supply module; the sensing terminal adopts a single-CPU hardware architecture, the multi-core CPU module realizes synchronous sampling, data transmission and processing according to timing interruption, the hardware circuit design is simplified, the cost can be effectively reduced, and the fault traveling wave detection module and the mutual inductance module are connected by adopting the aviation plug for interface connection, so that the space can be effectively saved, the terminal volume is reduced, and the sensing terminal can be widely applied to various application scenes of a power distribution network.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a sensing control terminal according to an alternative embodiment of the present invention;
fig. 2 is a flowchart of a monitoring point arrangement method for a distributed energy distribution network according to an embodiment of the present invention.
Description of the drawings:
1-a communication module; 2-a multi-core CPU module; 3-an external interface module; 4-fault traveling wave detection module; 5-an analog/digital conversion module; 6-mutual inductance module; 7-a power supply module; 8-a data encryption module; 9-a GPS module; 11-a fiber optic communications unit; 12-a wireless communication unit; 13-a communication control unit; 21-DSP core; 22-ARM core; a-a first aviation plug; b-a second aviation plug; c-a third aviation plug; d-a fourth aviation plug; e-a fifth aviation plug.
Detailed Description
The embodiment of the invention provides a perception control terminal and a monitoring point arrangement method of a distributed energy distribution network, which are used for solving the technical problems of high cost and large size of the existing perception control terminal.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a structure of a sensing control terminal according to an embodiment of the present invention.
The embodiment of the invention provides a perception control terminal, which comprises a communication module 1, a multi-core CPU module 2, an external interface module 3, a fault traveling wave detection module 4, an analog/digital conversion module 5, a mutual inductance module 6 and a power supply module 7;
the output end of the fault traveling wave detection module 4 is connected with the external interface module 3, and the input end of the fault traveling wave detection module is connected with the first aviation plug a and is used for detecting fault traveling waves at an installation point;
the output end of the mutual inductance module 6 is connected with the external interface module 3 through the analog/digital conversion module 5, and the input end of the mutual inductance module is connected with a second aviation plug b and used for measuring voltage, current and protective current;
the multi-core CPU module 2 is connected with the external interface module 3 and the communication module 1, and is used for controlling the analog/digital conversion module 5 to perform synchronous sampling according to the timed interrupt and transmitting and processing data;
and the power supply module 7 is used for supplying power to the communication module 1, the multi-core CPU module 2, the external interface module 3, the fault traveling wave detection module 4, the analog-to-digital conversion module 5 and the mutual inductance module 6.
The mutual inductance module 6 can adopt a measurement-level current transformer to collect current and adopt a protection-level current transformer to collect protection current, so that the sensing control terminal of the embodiment of the invention can take measurement and protection functions into consideration. The rated voltage of the current transformer supports 100V or 380V, so that the voltage signal of the sensing control terminal can be taken from PT (potential transformer) with the secondary rated voltage of 100V or can be directly taken from the 380V low-voltage side.
In one implementation, the multi-core CPU module 2 includes a DSP core 21 and an ARM core 22 that are communicatively connected;
the DSP core 21 is connected with the external interface module 3, and the ARM core 22 is connected with the communication module 1.
In the embodiment of the invention, the multi-core CPU module 2 selects a DSP plus ARM architecture, and performs tasks with high real-time requirements, such as AD sampling and synchrophasor calculation, on the DSP core 21 side, and performs tasks with relatively low real-time requirements, such as data communication, on the ARM core 22 side. The framework based on the DSP and the ARM can meet the requirements of the synchronous phasor measurement device, the functions of protection, measurement and control and other devices can be integrated by adding the execution element, and the cost is lower than that of the traditional situation awareness control terminal. Therefore, the perception control terminal provided by the embodiment of the invention can be applied to not only the main network but also the power distribution network, and has the advantages of low cost and wide application.
In an implementable manner, the communication module 1 comprises a fiber-optic communication unit 11, a wireless communication unit 12 and a communication control unit 13;
the optical fiber communication unit 11 is connected with the first communication interface through a third aviation plug c, and is used for performing wired communication with equipment connected with the first communication interface;
the communication control unit 13 is connected to the second communication interface through a fourth aviation plug d, and is configured to send a control signal to a device connected to the second communication interface.
In one enabling manner, the first communication interface includes an RJ45 interface and a fiber optic interface; the second communication interface comprises an R485 interface, an RS232 interface and an RJ45 interface.
The control of other devices by the sensing control terminal can be realized through the setting of the communication control unit 13.
Through the arrangement of the embodiment of the invention, the perception control terminal not only supports a wireless communication mode but also supports an optical fiber communication mode in the communication mode. In particular, wired communication can be adopted between a transformer substation and a conditional power distribution room, and wireless communication can be adopted between a tower or an unconditional power distribution room.
In an implementation manner, the system further comprises a data encryption module 8;
the input end of the data encryption module 8 is connected to the optical fiber communication unit 11 and the wireless communication unit 12, and the output end of the data encryption module 8 is connected to the ARM core 22.
The data encryption function of the data encryption module 8 can be realized by using an existing encryption chip. The encryption chip can authenticate, encrypt and decrypt communication data of the perception control terminal, and a master station connected with the perception control terminal can realize bidirectional authentication through corresponding operation so as to ensure confidentiality and integrity of data transmission. The embodiment of the present invention does not limit the specific encryption algorithm.
In an implementation manner, the system further comprises a GPS module 9;
the GPS module 9 is connected with the ARM core 22 and used for outputting an equidistant synchronous sampling pulse signal;
the ARM core 22 is specifically configured to receive the equal interval synchronous sampling pulse signal, correct the time offset of the timer interrupt according to the interval synchronous sampling pulse signal, and send an a/D synchronous sampling signal according to the corrected timer interrupt;
the analog/digital conversion module 5 is specifically configured to adopt and process data of the mutual inductance module 6 according to the a/D synchronous sampling signal to obtain digital quantity data;
the DSP core 21 is specifically configured to perform phasor calculation on the digital quantity data transmitted by the analog-to-digital conversion module 5.
When the ARM core 22 corrects the time deviation of the timer interrupt according to the interval synchronous sampling pulse signal, the following steps are specifically executed:
assuming that in a power system with a power frequency of 50 Hz, the number of sampling points per cycle is N, and the timer value per second of a CPU is M, the theoretical value t of the equal-interval sampling time is as follows:
Figure BDA0003365056440000061
the timer value for recording the arrival time of the previous interval synchronous sampling pulse signal is set as TxAnd recording the timer value of the arrival time of the interval synchronous sampling pulse signal, and setting the timer value as TyThen, the correction value t' for the next second of equally spaced sampling times is:
Figure BDA0003365056440000062
comparing the difference value between the correction value t 'and the theoretical value t, comparing the difference value with a preset threshold value, and if the difference value is smaller than the preset threshold value, correcting the timer by using the correction value t'; if the GPS signal is larger than the preset threshold value, the GPS signal is considered to be wrong, and the theoretical value t is still used. And recording the deviation of the current time, wherein the deviation exceeds a threshold value for 10 continuous times, the deviation value is constant, the error of the timer is judged to be large at the moment, and a correction value t' is adopted.
The embodiment of the invention can ensure that the perception control terminal carries out synchronous sampling, and has higher precision when the interval synchronous sampling pulse signal of the GPS module 9 is lost or has short-time errors.
In one implementation, the power module 7 is in a dual power supply mode, and is an ac or dc power supply. Specifically, power module 7 supports alternating current and direct current 110/220V, can be applied to the transformer substation and have the condition of direct current screen, supports direct current 24/48V simultaneously, and the reserve battery that corresponds can install on block terminal and shaft tower.
In an implementation manner, the input end of the power module 7 is connected with a fifth aviation plug e.
In the embodiment of the invention, the terminals of each module are all the aviation plugs, so that the space can be saved, and the sensing control terminal is more miniaturized.
The invention further provides a monitoring point arrangement method of the distributed energy distribution network.
Referring to fig. 2, fig. 2 is a flowchart illustrating a monitoring point arrangement method of a distributed energy distribution network according to an embodiment of the present invention.
The invention provides a monitoring point arrangement method of a distributed energy distribution network, which comprises the following steps:
step S1, determining access capacity corresponding to each node of the distributed energy distribution network, wherein the nodes comprise a distributed energy grid-connected point, a flexible load grid-connected point, an energy storage grid-connected point and a public connection point;
step S2, using a node with an access capacity greater than a preset capacity threshold as a primary monitoring point, and installing the sensing control terminal according to any one of the above embodiments at the primary monitoring point.
According to the embodiment of the invention, the perception control terminal is arranged on the monitoring point of which the corresponding access capacity of the node meets the requirement, so that the effective utilization of resources can be realized.
In one implementation, the method further comprises:
and taking the node with the access capacity not larger than a preset capacity threshold value as a secondary monitoring point, and installing a sensor for the power distribution network at the secondary monitoring point.
In consideration of the fact that the influence of a user side with small access capacity on a power grid is small, the embodiment of the invention adopts the sensor for the power distribution network with poor precision and response performance for the node, so that the waste of monitoring resources can be avoided.
In one implementation, the method further comprises:
and installing a corresponding number of the perception control terminals at the primary monitoring point according to the size of the access capacity and the importance degree of the nodes.
For example, when the access capacity is large and the node is important, a plurality of sensing control terminals can be used for joint monitoring, so as to improve the reliability of monitoring.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A perception control terminal is characterized by comprising a communication module, a multi-core CPU module, an external interface module, a fault traveling wave detection module, an analog-to-digital conversion module, a mutual inductance module and a power supply module;
the output end of the fault traveling wave detection module is connected with the external interface module, and the input end of the fault traveling wave detection module is connected with the first aviation plug and is used for detecting fault traveling waves at an installation point;
the output end of the mutual inductance module is connected with the external interface module through the analog-to-digital conversion module, and the input end of the mutual inductance module is connected with a second aviation plug and used for measuring voltage, current and protective current;
the multi-core CPU module is connected with the external interface module and the communication module and is used for controlling the analog/digital conversion module to synchronously sample and transmit and process data according to the timing interruption;
and the power supply module is used for supplying power to the communication module, the multi-core CPU module, the external interface module, the fault traveling wave detection module, the analog/digital conversion module and the mutual inductance module.
2. The sensing control terminal of claim 1, wherein the multi-core CPU module comprises a DSP core and an ARM core communicatively connected;
the DSP core is connected with the external interface module, and the ARM core is connected with the communication module.
3. The awareness control terminal of claim 2, wherein said communication module comprises a fiber optic communication unit, a wireless communication unit, and a communication control unit;
the optical fiber communication unit is connected with the first communication interface through a third aviation plug and is used for carrying out wired communication with equipment connected with the first communication interface;
the communication control unit is connected with the second communication interface through a fourth aviation plug and used for sending a control signal to equipment connected with the second communication interface.
4. The awareness control terminal of claim 3 wherein said first communications interface comprises an RJ45 interface and a fiber optic interface; the second communication interface comprises an R485 interface, an RS232 interface and an RJ45 interface.
5. The awareness control terminal according to claim 3, further comprising a data encryption module;
the input end of the data encryption module is connected with the optical fiber communication unit and the wireless communication unit, and the output end of the data encryption module is connected with the ARM core.
6. The sensing and control terminal of claim 2, further comprising a GPS module;
the GPS module is connected with the ARM core and used for outputting an equidistant synchronous sampling pulse signal;
the ARM core is specifically used for receiving the equal interval synchronous sampling pulse signals, correcting the time deviation of the timing interruption according to the interval synchronous sampling pulse signals, and sending out an A/D synchronous sampling signal according to the corrected timing interruption;
the analog/digital conversion module is specifically used for adopting and processing the data of the mutual inductance module according to the A/D synchronous sampling signal to obtain digital quantity data;
the DSP core is specifically configured to perform phasor calculation on the digital quantity data transmitted by the analog-to-digital conversion module.
7. The sensing and control terminal of claim 1, wherein the power module is in a dual power mode and is an ac or dc power source.
8. The sensing and control terminal of claim 7, wherein the input terminal of the power module is connected to a fifth aviation plug.
9. A monitoring point arrangement method for a distributed energy distribution network is characterized by comprising the following steps:
determining access capacity corresponding to each node of the distributed energy distribution network, wherein the nodes comprise a distributed energy grid-connected point, a flexible load grid-connected point, an energy storage grid-connected point and a public connection point;
taking a node with an access capacity larger than a preset capacity threshold value as a primary monitoring point, and installing the perception control terminal according to any one of claims 1-8 at the primary monitoring point.
10. The method of arranging monitoring points for a distributed energy power distribution network of claim 9, further comprising:
and taking the node with the access capacity not larger than a preset capacity threshold value as a secondary monitoring point, and installing a sensor for the power distribution network at the secondary monitoring point.
CN202111408265.1A 2021-11-19 2021-11-19 Sensing control terminal and monitoring point arrangement method of distributed energy distribution network Pending CN114050656A (en)

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