CN211456802U - Distributed protection measurement and control device - Google Patents
Distributed protection measurement and control device Download PDFInfo
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- CN211456802U CN211456802U CN201921548210.9U CN201921548210U CN211456802U CN 211456802 U CN211456802 U CN 211456802U CN 201921548210 U CN201921548210 U CN 201921548210U CN 211456802 U CN211456802 U CN 211456802U
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Abstract
The utility model discloses a distributed protection measurement and control device, including protection measurement and control module, protection measurement and control module includes first data processor and second data processor, first data processor and second data processor communication connection carry out data interaction, first data processor is used for GOOSE peer-to-peer communication, IEC60870-101/104 protocol to forward, download and upload definite value, communication parameter and download and upload program, second data processor is used for corresponding switch interval remote signalling, telemetering measurement, remote control's processing and logic protection; the second data processor is connected with a DO opening module and a DI opening module, cuts off and isolates fault points through the DO opening module, performs switching control, and acquires the switch state through the DI opening module. The utility model discloses reduced the data conversion link between each measurement and control module, made independently realize the data interaction between the terminal, guaranteed fault location's ageing.
Description
Technical Field
The utility model relates to a distribution network automation technical field, concretely relates to distributed protection measurement and control device.
Background
In recent years, domestic medium and low voltage distribution automatic networks are undergoing a rapid development stage, and the construction of network frames of distribution networks is increasingly emphasized. Typical wiring modes of domestic power distribution networks at present mainly include single-ring type, double-ring type, single radiation, double radiation, petal type and the like. Distribution rack applications tend to be complicated, and conventional centralized and in-situ feeder automation logic (voltage-time and voltage-current) has not been able to meet the current distribution grid automation requirements. The intelligent distributed power distribution automation of the basic IEC61850+ GOOSE peer-to-peer communication has thus developed. The intelligent distributed feeder automation takes decentralized, master-free and master station intervention-free as a design concept, and decision judgment is carried out by mutual peer-to-peer communication among intelligent power distribution terminals of each ring network switch, so that fault location, isolation and power restoration of a distribution line can be finished without depending on the cooperation of a power distribution master station.
The current mainstream design scheme is that the distribution automation terminal is composed of a comprehensive measurement and control communication module and a plurality of independent protection measurement and control modules (one protection measurement and control module corresponds to one interval). The comprehensive measurement and control communication module can be independently combined with a screen or arranged in an incoming line PT cabinet, the protection measurement and control modules are arranged in secondary cells of the switch cabinet at intervals correspondingly, and the comprehensive measurement and control communication module is connected with the protection measurement and control modules through a data bus. As shown in fig. 1, the power distribution automatic terminal is composed of an N +1 mode, that is, 1 comprehensive measurement and control communication management unit and N protection measurement and control modules. The protection measurement and control module is mainly responsible for realizing remote signaling, remote measuring, remote controlling and protection logic (conventional protection, voltage current type feeder automation and intelligent distributed feeder automation) functions of the corresponding switch interval. The comprehensive measurement and control communication module is mainly responsible for collecting remote signaling and remote measuring information collected by the protection measurement and control module, uploading the remote signaling and remote measuring information to the distribution automation master station according to the forwarding point table, and executing a remote control command issued by the distribution automation master station or forwarding the remote control command to the corresponding protection measurement and control module for execution. The intelligent distributed feeder automation system is in charge of peer-to-peer communication with the distribution automation terminals of other distribution rooms, and the intelligent distributed feeder automation function is achieved.
At present, the intelligent distributed feeder automation terminal more splits the original centralized DTU into various switch interval units for processing, and the core component is still a comprehensive measurement and control communication module. And the system is composed of two parts of different architecture platform schemes, so that different hardware configuration schemes are caused due to different application demand directions. The mutual compatibility of the protection measurement and control module and the comprehensive measurement and control communication module is poor, and no replaceability exists. There are significant drawbacks to intelligent distributed FA applications based on peer-to-peer communication:
1. the existing peer-to-peer communication fault processing has multiple data interactions, and the efficiency and the communication time delay are difficult to meet the requirements of high-speed fault positioning and high-speed fault isolation;
for example: supposing that a protection measurement and control module A5 starts element inspection and a protection fixed value is out of limit, GOOSE peer-to-peer communication is triggered to carry out fault interval positioning, and the A5 interacts with a rear-end node comprehensive measurement and control communication module C1 through a data bus; the comprehensive measurement and control communication module C1 is in peer-to-peer communication with the comprehensive measurement and control communication module C2, and data information of the protection measurement and control module B1 at the lower end is inquired. The protection measurement and control module B1 returns data through the original path, and the protection measurement and control module A5.
Similarly, the interaction process of the A5 and the front-end node integrated measurement and control communication module A4 is basically the same. In the interactive fault positioning process of the data bus, multiple device and data interactive processes need to be performed, and the timeliness of the automation of the intelligent distributed feeder is greatly reduced.
2. The comprehensive measurement and control communication module is used as an intelligent distributed core component and is responsible for GOOSE communication interaction with adjacent switch stations. When the distributed feeder automation function fails, the distributed feeder automation function is not always called out, and the reliability of power distribution automation is difficult to guarantee.
Therefore, no device which can realize mutual communication with other protection measurement and control modules through the protection measurement and control modules is used for fault location and isolation.
SUMMERY OF THE UTILITY MODEL
Based on prior art's is not enough, the utility model provides a distributed protection measurement and control device is used for reducing the data conversion link between each measurement and control module, makes independently realize the data interaction between the terminal, guarantees fault location's ageing, improves product overall reliability, effectively reduces the product and synthesizes the development cost, simplifies the fortune dimension degree of difficulty, realizes going centralization.
The technical scheme of the utility model is that:
a distributed protection measurement and control device is characterized in that: the protection measurement and control module comprises a first data processor and a second data processor, wherein the first data processor is in communication connection with the second data processor and performs data interaction, the first data processor is used for GOOSE peer-to-peer communication, IEC60870-101/104 protocol forwarding, downloading and uploading fixed values, communication parameters and downloading and uploading programs, and the second data processor is used for processing and logic protection corresponding to switch interval remote signaling, remote measurement and remote control; the first data processor adopts an ARM core processor, the second data processor adopts a DSP core processor, the second data processor is connected with a DO opening module and a DI opening module, fault points are cut off and isolated through the DO opening module, switching control is carried out, switch states are collected through the DI opening module, in addition, at least two protection measurement and control modules are arranged in each power distribution terminal, each protection measurement and control module is respectively connected with all switches in a corresponding switch interval and used for monitoring switch positions and controlling switch states, each protection measurement and control module is in communication connection with an adjacent protection measurement and control module through IEC61850+ GOOSE peer-to-peer communication, the protection measurement and control modules are used for realizing fault positioning according to information interaction of the protection measurement and control modules or the adjacent protection measurement and control modules when a certain node of a power supply line fails, and ordering is carried out by changing the GOOSE between the protection measurement and control modules or the adjacent protection measurement and control modules Reading the relation, and isolating the fault and switching power supply;
further, the first data processor is also connected with a FLASH memory.
Further, the first data processor is also connected with a DDR random access memory.
Furthermore, the first data processor is also connected with a communication module, and the communication module communicates with a communication module in an adjacent protection measurement and control module to perform GOOSE peer-to-peer communication, and IEC60870-101/104 protocol forwarding, downloading and uploading of fixed values, communication parameters and downloading and uploading programs.
Furthermore, the second data processor is also connected with an LCD display and a keyboard.
The utility model has the advantages that: the centralization is really removed, all protection measurement and control modules can be communicated by GOOSE, and the switch interval units can be subjected to redundant processing, so that the reliability of intelligent distribution is greatly improved; GOOSE receiving and sending are automatically realized between adjacent switch stations and between switch intervals in the stations, and the timeliness of fault positioning, isolation and power supply switching is guaranteed; the product development period is shortened, and the cost of developers is reduced; the scale production can be realized, the material types are effectively reduced, and the material storage cost is reduced.
Drawings
Fig. 1 is a block diagram of an intelligent distributed feeder automation terminal in the prior art;
fig. 2 is a communication schematic block diagram of the protection measurement and control module of the present invention;
fig. 3 is a block diagram of the hardware structure of the protection measurement and control module of the present invention;
fig. 4 is a schematic view of the topological structure of the intelligent distributed feeder automation power distribution network frame of the present invention;
fig. 5 is the utility model discloses according to intelligent distributed feeder automation distribution rack topological structure generate corresponding ICD template structure virtual, correspond actual terminal equipment's connection relation model structure picture;
fig. 6 is an example diagram of a fault point in an intelligent distributed feeder automation distribution network topology according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the completion of locating, isolating and transferring power to the fault point of FIG. 5 according to the present invention;
fig. 8 is an exemplary diagram of GOOSE subscription relationship between local node interval unit terminals according to the present invention;
fig. 9 shows GOOSE subscription relationships between terminals at modified locally changed nodes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 2, a distributed protection measurement and control device includes protection measurement and control modules, wherein at least two protection measurement and control modules are provided in each power distribution terminal, each protection measurement and control module corresponds to a switch interval, and each protection measurement and control module is connected to all switches in the corresponding switch interval respectively, and is used for monitoring switch positions and controlling switch states, each protection measurement and control module is in communication connection with its adjacent protection measurement and control module through IEC61850+ GOOSE peer-to-peer communication, the protection measurement and control modules are used for realizing fault location through self or information interaction with its adjacent protection measurement and control module when a certain node of a power supply line fails, and isolating and switching power supply of faults are performed by changing the GOOSE subscription relationship between the protection measurement and control module itself or the switch between the adjacent protection measurement and control modules.
The protection measurement and control modules communicate peer-to-peer through IEC61850+ GOOSE to realize the position of all switches on the exchange line, protect fault information and current and voltage measurement values, determine switches on two sides of a fault section which are directly electrically connected, start protection tripping in a positive direction or a negative direction, and realize high-speed fault location and fault isolation. The communication with the adjacent switch stations does not need a comprehensive measurement and control communication module;
suppose that the protection measurement and control module A5 starts element inspection and the protection fixed value is out of limit, GOOSE peer-to-peer communication is triggered to carry out fault section positioning, the A5 directly carries out GOOSE peer-to-peer communication with the protection measurement and control module B1 of the rear end node according to the ICD model file, and the protection measurement and control module B1 returns fault data, state quantity, telemetering data and the like. The process does not relate to the forwarding processing of data, so that the processing efficiency and the time delay are improved;
similarly, the interaction process of the A5 and the front-end node protection and control module A4 is basically the same. A5 directly performs GOOSE peer-to-peer communication with a front-end node 'protection measurement and control module A4' according to the ICD model file, and the 'protection measurement and control module A4' returns data such as fault data, state quantity, telemetering and the like.
As shown in fig. 3, the protection measurement and control module includes a first data processor and a second data processor, the first data processor and the second data processor are communicatively connected and perform data interaction, the first data processor is used for GOOSE peer-to-peer communication, IEC60870-101/104 protocol forwarding, downloading and uploading of fixed values, communication parameters, and downloading and uploading programs, and the second data processor is used for processing and logic protection corresponding to switch interval telecommand, telemetry, and remote control. The second data processor adopts a processor of a DSP core, the ARM core is connected with the DSP core, and the ARM core and the DSP core communication board level bus perform data interaction, including forwarding maintenance of real-time three-remote data, intelligent distributed logic required adjacent switch interval data, state quantity and fixed value parameters.
The first data processor is also connected with a FLASH memory and a DDR random access memory for the FLASH memory and random storage of data.
The first data processor is also connected with a communication module, the communication module communicates with a communication module in an adjacent protection measurement and control module to perform GOOSE peer-to-peer communication, IEC60870-101/104 protocol forwarding, downloading and uploading fixed values, communication parameters and downloading and uploading programs, and the communication module can adopt a 4G module and the like.
The second data processor is connected with a DO opening module and a DI opening module, the DO opening module and the DI opening module are connected with the switch in the interval, the DO opening module cuts off and isolates the fault point and performs switching control, and the DI opening module acquires the switch state.
The second data processor is also connected with an LCD display and a keyboard. The LCD display can display data and state, and the keyboard can be used for external data input and control.
The first data processor and the second data processor are powered by the power module, the power module unit supplies power in a mode of 220V double-power switching, supplies a working power supply to the system after voltage reduction and conversion of the power transformer, generates 3.3V/5V voltage through the DC/DC direct current converter to supply the core processor and the liquid crystal display module to work, and converts DC24V voltage to supply the I/O output and input module to work.
Application example of the present embodiment:
as shown in fig. 4, it is a topology structure of an intelligent distributed feeder automation distribution network frame;
generating a corresponding ICD template according to the topological structure of the intelligent distributed feeder automation power distribution network frame to construct a virtual connection relation model corresponding to the actual terminal equipment, wherein the connection relation model is shown in FIG. 5; according to the connection relation model, corresponding physical connection of switch nodes between the power distribution terminal and adjacent switch stations or inside the power distribution terminal and the adjacent switch stations is achieved, switch intervals are configured, and the protection measurement and control module monitoring each switch interval and the adjacent protection measurement and control module perform GOOSE peer-to-peer communication through the optical fiber Ethernet; the protection measurement and control module comprises a first data processing unit and a second data processing unit, the first data processing unit is connected with the second data processing unit and performs data interaction, the first data processing unit is used for GOOSE peer-to-peer communication, IEC60870-101/104 protocol forwarding, downloading and uploading fixed values, communication parameters and downloading and uploading programs, the second data processing unit is used for corresponding switch interval telecommand, telemetering and remote control processing and logic protection, then switch nodes on each switch interval are associated to corresponding virtual switch network rack nodes according to an ICD template to form example configuration, then all protection measurement and control modules in power distribution automation form a looped network through an optical fiber switch, the example configuration is operated, the protection measurement and control modules are started to perform analog quantity data acquisition, as shown in fig. 6, if the S1 and S2 switches on the line of substation a2 both detect fault current, and the switch on the right side of S10 does not detect fault current, the switch interval units communicate with each other to judge that the fault point is downstream of S2, and the switches on the upstream of S10 trip S2 and S10, respectively; as shown in fig. 7, after the trip of S10, a power supply transfer signal is sent, and the interconnection switch of S11 is closed. And completing fault positioning, isolation and power supply transfer.
In practical engineering applications, the GOOSE subscription relationship between local node interval unit terminals is exemplified by the dashed line of S12 in fig. 8: s12 front and back node subscription relationship, front S4, back S13, S17, S18, S14; when any section of network connection is interrupted, the nodes of the power distribution network are changed, and only the GOOSE subscription relation between the terminals at the local change nodes needs to be modified. As indicated by the dashed line in fig. 9: front and back nodes of S12 subscribe relationship, front S4, back S21, S17, S18 and S14.
In the whole process, a comprehensive measurement and control communication module is not needed, and the protection measurement and control module autonomously realizes high-speed fault location and fault isolation according to the instance generated by the ICD model file.
To sum up, the utility model discloses compare and really realize going centralization in original design, do not distinguish principal and subordinate's equipment, need not main website intervention, by the intelligent terminal decision-making of each looped netowrk switch, accomplish distribution lines fault location, isolation and resume the power supply in coordination, on-the-spot fortune dimension, change portably change, effectively reduce the production and operation cost of enterprise.
All protection measurement and control modules can be communicated by GOOSE, and the interval units can be subjected to redundant processing, so that the reliability of intelligent distribution is greatly improved;
GOOSE receiving and sending are automatically realized between adjacent switch stations and between switch intervals in the stations, and the timeliness of fault positioning, isolation and power supply switching is guaranteed;
the interfaces of the protection measurement and control modules are standardized, field engineers are flexible in construction and modularized in installation, maintenance and replacement are simple and convenient, and all the interval units can be flexibly configured into data forwarding and peer-to-peer communication with adjacent switch stations according to field requirements;
the product development period is shortened, and the cost of developers is reduced;
the scale production can be realized, the material types are effectively reduced, and the material storage cost is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A distributed protection measurement and control device is characterized in that: including protection measurement and control unit, wherein, be provided with two protection measurement and control units in every distribution terminal at least, every protection measurement and control unit corresponds a switch interval, and every protection measurement and control unit is connected with all switches in the switch interval that corresponds respectively for to the control of the monitoring of switch position and on-off state, every protection measurement and control unit is through IEC61850+ GOOSE peer-to-peer communication rather than adjacent protection measurement and control unit communication connection, protection measurement and control unit is used for when a certain node of power supply line breaks down, realizes the location of trouble through self or rather than adjacent protection measurement and control unit's information interaction, through changing protection measurement and control unit self or rather than adjacent protection measurement and control unit between the GOOSE subscription relation between the switch, carries out the isolation of trouble and changes the power supply.
2. The distributed protection measurement and control device according to claim 1, wherein: the protection measurement and control unit comprises a first data processor and a second data processor, the first data processor is in communication connection with the second data processor and performs data interaction, the first data processor is used for GOOSE peer-to-peer communication, IEC60870-101/104 protocol forwarding, downloading and uploading of fixed values, communication parameters and downloading and uploading programs, and the second data processor is used for processing and logic protection corresponding to switch interval remote signaling, remote measurement and remote control.
3. The distributed protection measurement and control device according to claim 2, wherein: the first data processor adopts a processor of an ARM core.
4. The distributed protection measurement and control device according to claim 3, wherein: the first data processor is also connected with a FLASH memory.
5. The distributed protection measurement and control device according to claim 3, wherein: the first data processor is also connected with a DDR random access memory.
6. The distributed protection measurement and control device according to claim 3, wherein: the first data processor is also connected with a communication module, and communicates with the communication module in the adjacent protection measurement and control unit through the communication module to perform GOOSE peer-to-peer communication, IEC60870-101/104 protocol forwarding, downloading and uploading of fixed values, communication parameters and downloading and uploading programs.
7. The distributed protection measurement and control device according to claim 2, wherein: the second data processor adopts a processor of a DSP core.
8. The distributed protection measurement and control device of claim 7, wherein: the second data processor is connected with a DO opening module and a DI opening module, cuts off and isolates fault points through the DO opening module, performs switching control, and acquires the switch state through the DI opening module.
9. The distributed protection measurement and control device of claim 7, wherein: the second data processor is also connected with an LCD display and a keyboard.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518703A (en) * | 2019-09-18 | 2019-11-29 | 珠海欧力配网自动化股份有限公司 | A kind of distributed protection measure and control device and method |
| CN113379079A (en) * | 2021-06-25 | 2021-09-10 | 江苏大烨智能电气股份有限公司 | Distributed FA online operation and maintenance diagnosis system and method |
-
2019
- 2019-09-18 CN CN201921548210.9U patent/CN211456802U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518703A (en) * | 2019-09-18 | 2019-11-29 | 珠海欧力配网自动化股份有限公司 | A kind of distributed protection measure and control device and method |
| CN113379079A (en) * | 2021-06-25 | 2021-09-10 | 江苏大烨智能电气股份有限公司 | Distributed FA online operation and maintenance diagnosis system and method |
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Address after: 519000, Floors 101-1 and 2-4, Building 8, No. 81 Dingye Road, Tangjiawan Town, High tech Zone, Zhuhai City, Guangdong Province Patentee after: ZHUHAI OLE DISTRIBUTION NETWORK AUTOMATION CO.,LTD. Address before: Building 5, No. 88 Keji 9th Road, High tech Zone, Zhuhai City, Guangdong Province, 519000 Patentee before: ZHUHAI OLE DISTRIBUTION NETWORK AUTOMATION CO.,LTD. |
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