CN107611941B - A kind of site line protective devices based on function Top-down design - Google Patents
A kind of site line protective devices based on function Top-down design Download PDFInfo
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Abstract
The invention discloses a kind of site line protective devices based on function Top-down design, and the functions such as route protection, route combining unit and intelligent terminal are carried out Vertical Combination, is integrated to the veneer part in a protective device Nei and realizes.A kind of site line protective devices based on function Top-down design provided by the invention; pass through integrated design; Top-down design monospace combining unit, protection and intelligent terminal function; reduce device type and quantity; simplify configuration; reduce signal intermediate conveyor link; by shortening the data transfer path time; it improves and applies real-time; operating time of protection will be shortened to line segregation sampled data and control resource-sharing by meeting other equipment simultaneously, and is provided data acquisition and control for the end equipment of standing such as station domain protection, stability control equipment and executed support.
Description
Technical field
The present invention relates to a kind of site line protective devices based on function Top-down design, belong to electric system relay guarantor
Protect technical field.
Background technique
Conventional substation protection equipment is typically mounted at control room or protective chamber, is directly sampled using cable, is directly jumped
Lock, farther out, cable is longer, and CT saturation, multipoint earthing, circuit crosstalk, distribution capacity may be brought to put for distance between a secondary device
The problems such as electric, while cannot achieve data sharing.
Intelligent substation realizes data sharing by increasing the application of the IED equipment such as combining unit, intelligent terminal；Process layer
Equipment solves long cable problem using convergence control cabinet mounting means on the spot.But protection band is also given in the variation of new equipment and mounting means
Some new problems are carried out: (1) having increased the intermediate link of protection acquisition, trip signal transmission, lead to the whole group of route protection
Actuation time extends 5-10ms.The quick-action and reliability for reducing main protection, make operation of power networks in the boundary of stability limit.
(2) process layer devices are installed in the convergence control cabinet of primary equipment, and running environment is poor, and equipment failure rate is high, influence protection system
Reliability.(3) secondary device is many kinds of, secondary circuit is complicated, the heavy workloads such as field connection, configuration, debugging and maintenance, peace
It adjusts and the repair time is significantly elongated compared to normal station.
1 Yang Zhi of document is macro etc., the discussion of automatic system of intelligent transformer station new departure, Automation of Electric Systems, and 2016,
(14), document 2, ZHENG Yuping, Application of Investigate System and Intelligent
Devices in Vertical Integration Smart Substation.ZIJIN-2016International
A kind of intelligence change realized based on discrete plate is proposed in Forum on Smart Grid Protection and Control
The design of power station Top-down design equipment and system integration scheme, combining unit function, defencive function, intelligent terminal function are integrated in
One device difference plate is realized, the problems such as device category and quantity are more, configuration is complicated are solved.
China has accepted patent 201510370184.5 " a kind of multi-functional Top-down design device towards interval " and has disclosed
A kind of multi-functional Top-down design device towards interval, specific implementation are by combining unit, intelligent terminal and protection observing and controlling
Independent CPU is respectively adopted to realize, using multi -CPU board, ensure that multi-functional relative independentability.
Document 1,2 and the function Top-down design device that patent 201510370184.5 proposes respectively is accepted, has been by intelligence
Energy substation combining unit function, defencive function, intelligent terminal function are changed to inside same device by three different devices realizations
Different plates (board) realize that although this method saves data transmission period between device, but there are pass between plate for data transmission
Defeated delay, therefore the promotion of protection act speed is limited, it is still slower than conventional substation route protection.On the other hand, document 1,2 and
It accepts proposed Top-down design equipment in patent 201510370184.5 and compares tradition in terms of equipment protection grade, anti-interference ability
Secondary device still needs to be mounted in convergence control cabinet on the spot without being obviously improved, equally exist equipment failure rate is high, bad weather maintenance,
The problems such as debugging is difficult, therefore there is no solve intelligent substation bring very well to protect quick-action, integrity problem.
Summary of the invention
Purpose: in order to shorten operating time of protection, reduction number of devices and type, simplified configuration, facilitate and realize equipment i.e.
Plug-and-play, the present invention provide a kind of site line protective devices based on function Top-down design.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of site line protective devices based on function Top-down design, comprising: cabinet, cover board, supporting structure, just
Ground line protective devices using function Top-down design integrated design and unshielded mounting design on the spot, comprising: a, function
Top-down design site line protective devices merge route protection, route single on the basis of intelligent Substation System framework
Member and intelligent terminal function carry out Vertical Combination, are integrated to the veneer part in a protective device Nei and realize, by shortening data
The transmission path time improves and applies real-time, while meeting other equipment to line segregation sampled data and control resource-sharing
Requirement；B, site line protective devices use highly reliable guard technology, are answered using strong electromagnetic, machinery and climatic environment is adapted to
The complicated intelligent electronic device system structure design technology of power solves under compact Cabinet Size specification in complicated intelligent electronic device
Using electromagnetic disturbance coupling between each circuit board caused by muti-piece parallel arrangement, strong, cabinet absorbs impact external force condition to circuit board
It is unshielded straight to meet scene for problem of the lower circuit board vulnerable to the heat dissipation for circuit board in mechanical damage and parallel construction middle position difficulty
Connect installation requirement；C, site line protective devices are designed using no liquid crystal display, by the way that intelligent management unit is arranged in control room
Man-machine interface as whole station site protective device；D, site line protective devices are designed using standard interface, are reduced
It accidentally touches, mis-wired possibility, creates conditions for the maintenance of protection equipment replacement formula and plug and play；The top of the box is provided with gold
Belong to cover board, conductive seal item is provided between cabinet and metal cover board, is divided into cabinet by thermally conductive barricade in the middle part of cabinet
Two layers lower, cabinet lower level floor is provided with insulation board, and thermally conductive copper billet is provided on insulation board, is provided with insulation on thermally conductive copper billet and leads
Heat pad is provided with power module on insulating heat-conductive pad；Cabinet lower level floor is provided with the first supporting structure, the first support construction
It is provided on part and outputs module, the module of outputing is connected by double-row terminal with power module；At the top of the thermally conductive barricade
It is provided with heat conductive insulating pad, is connected at the top of the heat conductive insulating pad with heater element in CPU module, heat conductive insulating pad top
Portion is additionally provided with the second supporting structure, and fiber interface module is provided on the second supporting structure, and fiber interface module passes through
High speed connection terminal is connected with CPU module；It is provided with and leads between optical module on fiber interface module and metal cover board bottom
Thermal insulation pad；Cabinet lower layer is provided with three row's terminals, and power module is connected by three row's terminals with CPU module.
Preferably, the CPU module includes: SOC chip, FPGA, ADC chip and ethernet PHY chip；It is described
It outputs module and trips for receiving the instruction of CPU module.
Preferably, the SOC chip includes: a CPU management core and two DSP cores, and CPU management core completes dress
Set system configuration, event and recording management function；DSP1 core completes route protection, intelligent terminal function, task schedule period
INT0 is 833us, 1.2K；DSP2, which verifies existing protection starting calculating and combining unit function, task schedule period, INT0,
833us, 1.2K, INT1,250us, 4K；FPGA include: sampling FPGA, communication FPGA, sampling FPGA be used for ADC analog quantity into
Row high speed acquisition simultaneously provides sampled data to two DSP cores by way of snap shot or resampling；Communication FPGA passes through to interior
PCIe interface and SOC chip carry out MMS, GOOSE/SV data interaction, are externally connected by MII interface with ethernet PHY chip,
And fiber interface module is directly connected by SerDes interface, it is logical externally to provide HSR interface, point-to-point group of network interface and vertical connection road
Believe that interface, communication FPGA also complete the synchronization process function of IRIG-B decoding, time-triggered protocol, hardware interrupts and all kinds of timing；It adopts
Sample FPGA generates INT0, and 1.2K is interrupted to be used to protection CPU, and carries out 24KHz, 24000 points/second high speed according to the interrupt interval
Sampling, one point data of every 20 points of extractions are sent to protection CPU and use；For optical fiber differential protective, to realize the same of two side datas
Step need to realize two sides synchronized sampling by adjusting the interval INT0 length, and 24KHz high speed output interval can also become according to INT0
Change adjustment in real time；Protective device is by using high-speed sampling snap shot and the adjustment of Sampling interrupt interval is realized and opposite side sample-synchronous,
Data are not necessarily to resampling, reduce calculation amount, shorten sampling time delay.
Preferably, the fiber interface module includes: vertical connection pipeline joint, SV/GOOSE interface, MMS communication
Mouthful, HSR port, debugging mouth support the net of SV, GOOSE, MMS tri- to close for supporting SV/GOOSE common network+MMS independence networking
One, the two-way HSR looped network of point-to-point communication, whole station SV/GOOSE/MMS transmits vertical difference signal and receives B code clock synchronization signal, optical fiber
Interface module sealing is handled using special process, meets the requirement such as waterproof and dustproof, and distinct interface uses different colour bands and fault-tolerant key
Position design, anti-error plug；By the standardization of interface, reduction accidentally touched, mis-wired possibility, is conducive to realize that secondary device is replaceable
Maintenance and plug and play.
Preferably, the power module includes: dc power interface, battery module, opens into module and analog quantity
Acquisition module, battery module are opened into module for being powered to whole device system for acquiring external intake, analog quantity
Acquisition module is used for collection voltages, current signal.
Preferably, site line protective devices are designed using no liquid crystal display, by the way that intelligence is arranged in control room
Man-machine interface of the administrative unit as whole station site protective device completes interface collection using IEC61850 unified Modeling technology
It is middle to show, control operation, configuration management, backup management, protect equipment on-line monitoring and diagnostic function, it realizes to whole station site
The long-range management of the intelligence of secondary device.
Preferably, using Thermal Synthetic, electromagnetic shielding, mechanical strength structure-design technique, by die cast metal cabinet,
Metal cover board and internal thermally conductive shielding supporting structure component devices structural system, and the once molding peace on die cast metal cabinet
Heat loss through conduction face needed for the internal thermally conductive shielding supporting structure of dress and support mounting surface.
Preferably, conductive seal item is installed between die cast metal cabinet and metal cover board, realizes die cast metal
The reliable overlap joint being electromagnetically shielded between cabinet and metal cover board；Simultaneously in the one-time formed heat loss through conduction face of die cast metal cabinet and
The internal thermally conductive shielding supporting structure of installation on mounting surface is supported, internal electromagnetic armouring structure, separating device interface circuit are formed
With processing circuit installation space, influence of the spatial electromagnetic harassing and wrecking invaded from device interface circuit to processing circuit is reduced, is improved
Device entirety Electro Magnetic Compatibility.
Preferably, it is installed using on the one-time formed heat loss through conduction face of die cast metal cabinet and support mounting surface
Internal thermally conductive shielding supporting structure, forms cabinet inside keel structure, increases system structure intensity, reduces external machinery
Internal system circuit board mechanical deformation caused by stress improves device for mechanical environmental adaptability.
Preferably, it is installed using on the one-time formed heat loss through conduction face of die cast metal cabinet and support mounting surface
Internal thermally conductive shielding supporting structure will be unable to the heating device for directly passing through die cast metal cabinet and metal cover board heat loss through conduction
It is laid out in the plane adjacent with internal thermally conductive shielding supporting structure, the heat of the heating device can be passed through internal thermally conductive screen
Supporting structure and die cast metal cabinet heat loss through conduction are covered, solves the stack circuit board of site installation protective relaying device
There is blind area of radiating in structure, improve device atmospheric temperature environmental adaptability.
The utility model has the advantages that a kind of site line protective devices based on function Top-down design provided by the invention, are based on function
Can Top-down design, unshielded installation site route protection, by integrated design, Top-down design monospace combining unit,
Protection and intelligent terminal function reduce device type and quantity, simplify configuration, reduce signal intermediate conveyor link, shorten protection
Actuation time, and provide data acquisition and control for the station such as station domain protection, stability control equipment end equipment and execute support.External interface is adopted
With standardized designs, it is conducive to realize the replaceable maintenance of secondary device and plug and play.Using the high atmosphere of adaptation, electromagnetism, mechanical ring
The complicated intelligent electronic device overall construction design of border stress makes protection that can make to adapt to extremely low temperature, very high temperature, High aititude, strong salt
The unshielded installation in open air of the extreme environmental conditions such as mist.
Detailed description of the invention
Fig. 1 is site line protective devices mechanical structure schematic diagram of the invention.
Fig. 2 is site line protective devices electrical block diagram of the present invention；
Fig. 3 is site line protective devices data acquisition schematic diagram；
Fig. 4 is site route protection of the present invention using after Top-down design technology, and sampling, trip process.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, this application discloses a kind of site line protective devices based on function Top-down design, comprising:
Cabinet 1, the thermally conductive shielding supporting structure of metal cover board 3 and multiple inside of die cast metal；Metal is provided at the top of the cabinet 1
Cover board 3 is provided with conductive seal item 2 between cabinet 1 and metal cover board 3, pass through thermally conductive barricade 10 in the middle part of cabinet 1 for cabinet 1
It is divided into upper layer and lower layer, 1 lower level floor of cabinet is provided with insulation board 15, and thermally conductive copper billet 14, thermally conductive copper billet are provided on insulation board 15
It is provided with insulating heat-conductive pad 13 on 14, power module 12 is provided on insulating heat-conductive pad 13；1 lower level floor of cabinet is provided with first
Supporting structure 19 is provided on first supporting structure 19 and outputs module 11, and the module 11 of outputing passes through double-row terminal 16
It is connected with power module 12；The first heat conductive insulating pad 9, the first heat conductive insulating pad are provided at the top of the thermally conductive barricade 10
9 tops are connected with heater element 8 in CPU module 7, are additionally provided with the second support construction at the top of the first heat conductive insulating pad 9
Part 20, fiber interface module 6 is provided on the second supporting structure 20, and fiber interface module 6 passes through 18 He of high speed connection terminal
CPU module 7 is connected；Optical module 4 on fiber interface module 6 and metal cover board are provided with the second heat conductive insulating between 3 bottom
Pad 5；1 lower layer of cabinet is provided with three row's terminals 17, and power module 12 is connected by three row's terminals 17 with CPU module 7.
Die casting cabinet and cover board mating surface install conductive seal item, realize that is be electromagnetically shielded between cabinet and cover board reliably takes
It connects, while by using internal thermally conductive shielding supporting structure, device external interface circuit and internal processing circuit being divided
Device entirety Electro Magnetic Compatibility is improved in storehouse.By installing support on the one-time formed fastening structure face of die cast metal cabinet
Structural member increases the installation fixing intensity between cabinet interior circuit board and structural member, reduces the machine of internal circuit board and structural member
Tool deformation improves equipment overall structure intensity.And by installation supporting structure, cover board and cabinet heat loss through conduction can not be touched
Heating device with supporting structure is ingenious contacts, solve to radiate under relay protection Complex Electronic Systems Based stack circuit structure blind
The problem of area, improves device integral heat sink performance.
To guarantee that product open air longtime running reliability, apparatus of the present invention use high protection cabinet, device inner heat member
Part uses heat loss through conduction technology, transfers heat to shell, and shell is transferred heat to outer by Natural Heat Convection mode
Portion's air.
Heater element passes through heat conductive insulating pad in CPU module, transfers heat to thermally conductive barricade, and thermally conductive barricade again will
Heat transfer is to cabinet.
The main heater element of fiber interface module is optical module, and heat conductive insulating is installed between optical module and metal cover board
Pad；By optical module heat transfer to metal cover board.
Thermally conductive copper billet is installed, insulating heat-conductive pad is adjacent to the heater element on power module on insulation board.Using conduction technique
By heater element heat transfer to cabinet.
As shown in Fig. 2, the CPU module includes: SOC chip, field programmable gate array (hereinafter referred to as FPGA), ADC
Chip and ethernet PHY chip.SOC chip includes: a CPU management core and two DSP cores, CPU management core finishing device system
It is under unified central planning set, the management functions such as event and recording；DSP1 core completes route protection, intelligent terminal function；DSP2 core is completed to merge single
Meta function.FPGA includes: sampling FPGA, communication FPGA, and sampling FPGA is used to carry out high speed acquisition to ADC analog quantity and passes through pumping
Point or the mode of resampling are to two DSP cores offer sampled datas；Communicate FPGA to it is interior by PCIe interface and SOC chip into
Row MMS, GOOSE/SV data interaction is externally connected with ethernet PHY chip by MII interface, and is directly connect by SerDes
Mouth connection fiber interface module, externally provides the communication interfaces such as HSR interface, point-to-point group of network interface and vertical connection road, communicates FPGA
Also complete the functions such as the synchronization process of IRIG-B decoding, time-triggered protocol, hardware interrupts and all kinds of timing.
The fiber interface module includes: 100,000,000 optical modules, gigabit optical module, vertical connection channel module and B code module, is used for
Point-to-point communication sets up HSR communication looped network, transmits vertical difference signal and reception B code clock synchronization signal etc..
The power module includes: battery module, opens into module and analogue collection module, and battery module is used for entire
Apparatus system is powered, and is opened and is believed for acquiring external intake, analogue collection module for collection voltages, electric current into module
Number；The instruction that module is outputed for receiving CPU module is tripped.
Function Top-down design site route protection is on the basis of intelligent Substation System framework, by route protection, line
The functions such as road combining unit and intelligent terminal carry out Vertical Combination, are integrated to the veneer part in a protective device Nei and realize.It is logical
The shortening data transfer path time is spent, improves and applies real-time, while meeting other equipment to line segregation sampled data and control
The requirement of resource-sharing processed.
The design proposes very high requirement to the hardware of equipment, and conventional single-core CPU is difficult to be completed at the same time institute functional.Just
Ground route protection applies advanced SOC chip technology, and whole system is mainly realized that FPGA system is real by FPGA and multi-core CPU
The high speed acquisition of existing ADC analog quantity and pretreatment, IRIG-B decoding and time-triggered protocol, hardware interrupts, all kinds of timing it is synchronous at
Reason and with the data interaction interface of processor etc., DSP core completes route protection, route combining unit and intelligence in multi-core CPU
Terminal applies function.
On the basis of Top-down design, it is contemplated that the independence requirement of function, by management function, combining unit, intelligent terminal
Etc. functions be distributed in different CPU cores.Each DSP uses different break period scheduler tasks according to application function difference.
CPU management finishing device system configuration, the management functions such as event and recording；DSP1 realizes protection and intelligent terminal function, times
Dispatching cycle (INT0) is engaged in as 833us (1.2K)；DSP2 realizes combining unit function, and the task schedule period, (INT1) was
250us(4K)。
As shown in figure 3, sampling FPGA generates INT0 (1.2K) interruption and uses to protection CPU, and according to this when system is run
Interrupt interval carries out 24KHz (24000 points/second) high-speed sampling, and one point data of every 20 points of extractions is sent to protection CPU and uses.It is right
In optical fiber differential protective two sides synchronized sampling need to be realized by adjusting the interval INT0 length for the synchronization for realizing two side datas,
24KHz high speed output interval can also change adjustment in real time according to INT0.Protection is by using in high-speed sampling snap shot+sampling
Disconnected interval adjustment is realized and opposite side sample-synchronous, data are not necessarily to resampling, is reduced calculation amount, is shortened sampling time delay.
Combining unit function 4KHz sampled value realization principle: FPGA is sampled by 24KHz high-speed sample data and sampling instant
(sampling interval may finely tune in real time, but record each sampling instant) is stored in high-speed sampling buffer pool, and the acquisition moment subtracts firmly
Part low-pass filtering delay time is that device samples the practical moment.Sampling FPGA carries out external clock to be parsed device clock synchronization
And track external effectively second arteries and veins and generate 4KHz interruption (INT1) at equal intervals, if generating interruption by local second arteries and veins without external second arteries and veins,
The interruption moment is combining unit function double sampling output time.FPGA is sampled according to message actual samples moment and secondary
Sampling instant carries out Lagrange's interpolation and obtains combining unit output sampled value, and is transferred to DSP2 combining unit functional module and makes
With.
After site route protection uses Top-down design technology, sampling, tripping process are as shown in figure 4, sampling transmission is prolonged
When it is suitable with GPF (General Protection False, relatively intelligent station reduces the processing of combining unit software, internal transmission, transmission, protective device SV interface
Transmission time in processing and device, about shortening 5-6ms.Trip protection signal directly drives exit relay by bus, tripping
Loop transfer delay is identical with GPF (General Protection False, and relatively intelligent station is transmitted between reducing the internal trip signal plate of protection, protection intelligence is whole
The links such as transmission and intelligent terminal reception processing between end device.Therefore site route protection movement speed and normal station protecting group
This is equal, about shortens 7ms-8ms than intelligent station protection.
To verify correct feasibility of the invention, protection quick-action and SV output property have been carried out to protective device of the invention
It can test, as a result see attached list 1~3.
(1) 220kV transmission line of electricity RTDS model is established in emulation.Longitudinal collection based on SOC technology is respectively configured in transmission line of electricity
Top-down design protection, intelligent station protection (digital sample), the normal station protection 4 consummately changing protection, being realized based on discrete plate
The line differential protection of the different implementations of kind is compared.All defencive function configurations, protection algorism are completely the same.Test item
Mesh includes various troubles inside the sample spaces and transitional fault, and the testing time receives tripping letter with the failure generation moment to RTDS breaker
Subject to number.Test result is shown in Table 1.
Test result: Top-down design site route protection actuation time and normal station protection based on SOC technology are basic
Unanimously；Shorten 6ms-8ms than intelligent station route protection；3ms-5ms is shortened in Top-down design protection than being realized based on discrete plate.
1 RTDS emulation testing troubles inside the sample space operating time of protection of table
(2) system of building merges Elementary Function test.Test item includes apparatus module independence test, punctual mistake
Difference examine, step-out resynchronisation service check, sampled value publication discrete value examine, sampling the response time, SV message integrity check,
Ac analog acquires the test such as accuracy inspection, sample-synchronous accuracy test.
Test result is shown in Table 2.
Test result: the integrated combining unit function of site route protection, main indicator all reach combining unit requirement
Standard.
2 SV output function test result of table
(3) highly reliable prevention.Reliable protection testing experiment is carried out to protective device of the invention, reliable protection is surveyed
Examination is mainly verified from tests such as electromagnetic compatibility, machinery, environment, service life, compared with other protective device technologies, is increased
Solar irradiation, IP67 waterproof, hammering, falls without packaging multi-angle, the verifying of the tests such as service life, fast wink, wave 96 hours salt fogs
Gush, the test classes such as Conducted Radio Frequency, surge voltage, machinery are improved to customized grade, test parameters is much higher than other technologies.
Reliability test of the invention and other technologies are compared as shown in subordinate list 3.
The reliability test of the invention of table 3 and other technologies compare
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of site line protective devices based on function Top-down design, comprising: cabinet, cover board, supporting structure, it is special
Sign is: site line protective devices are wrapped using the integrated design and unshielded mounting design on the spot of function Top-down design
Include: a, function Top-down design site line protective devices carry out route protection, route combining unit and intelligent terminal function
Vertical Combination is integrated to the veneer part in a protective device Nei and realizes, eliminate in intelligent substation architectural framework sampling and
Tripping data need to be in the transmission delay between different device, different plug-in unit transmission delays inside device；B, site route protection fills
It sets and is designed using no liquid crystal display, by the way that human-machine interface of the intelligent management unit as whole station site protective device is arranged in control room
Mouthful;C, the top of the box is provided with metal cover board, and conductive seal item, cabinet middle part are provided between cabinet and metal cover board
Cabinet is divided into upper layer and lower layer by thermally conductive barricade, cabinet lower level floor is provided with insulation board, is provided on insulation board thermally conductive
Copper billet is provided with insulating heat-conductive pad on thermally conductive copper billet, is provided with power module on insulating heat-conductive pad；Cabinet lower level floor is provided with
First supporting structure is provided on the first supporting structure and outputs module, and the module of outputing passes through double-row terminal and power supply
Module is connected；Be provided with heat conductive insulating pad at the top of the thermally conductive barricade, at the top of the heat conductive insulating pad with generate heat in CPU module
Element is connected, and is additionally provided with the second supporting structure at the top of the heat conductive insulating pad, is provided with light on the second supporting structure
Fine interface module, fiber interface module are connected by high speed connection terminal with CPU module；Optical module on fiber interface module
Heat conductive insulating pad is provided between metal cover board bottom；Cabinet lower layer is provided with three row's terminals, and power module passes through three row ends
Son is connected with CPU module;The CPU module includes: SOC chip, FPGA, ADC chip and ethernet PHY chip；It is described to open
The instruction that module is used to receive CPU module out is tripped;The SOC chip includes: a CPU management core and two DSP cores,
CPU management core finishing device system configuration, event and recording management function；DSP1 core completes route protection, intelligent terminal function,
Its task schedule period INT0 is 833us, 1.2K；DSP2 verifies existing protection starting calculating and combining unit function, task tune
Spending the period has INT0,833us, 1.2K, INT1,250us, 4K；FPGA includes: sampling FPGA, communication FPGA, and sampling FPGA is used for
High speed acquisition is carried out to ADC analog quantity and provides sampled data to two DSP cores by way of snap shot or resampling；Communication
FPGA carries out MMS, GOOSE/SV data interaction by PCIe interface and SOC chip to interior, externally passes through MII interface and Ethernet
PHY chip is connected, and directly connects fiber interface module by SerDes interface, externally provides HSR interface, point-to-point group of network interface
With vertical connection road communication interface, communicating FPGA, also to complete IRIG-B decoding, time-triggered protocol, hardware interrupts synchronous with all kinds of timing
Processing function；It sampling FPGA and generates INT0,1.2K is interrupted to be used to protection CPU, and carries out 24KHz according to the interrupt interval,
24000 points/second high-speed sampling, one point data of every 20 points of extractions are sent to protection CPU and use；It is real for optical fiber differential protective
The synchronization of existing two side datas need to realize two sides synchronized sampling, 24KHz high speed output interval by adjusting the interval INT0 length
Also it can change adjustment in real time according to INT0；Protective device by using high-speed sampling snap shot and Sampling interrupt interval adjustment realize and
Opposite side sample-synchronous, data are not necessarily to resampling, reduce calculation amount, shorten sampling time delay.
2. a kind of site line protective devices based on function Top-down design according to claim 1, it is characterised in that:
The fiber interface module includes: vertical connection pipeline joint, SV/GOOSE interface, MMS communication mouth, HSR port, debugging mouth, is used
In supporting SV/GOOSE common network+MMS independence networking, SV, GOOSE, MMS unification of three nets, point-to-point communication, whole station SV/ are supported
The two-way HSR looped network of GOOSE/MMS transmits vertical difference signal and receives B code clock synchronization signal, and fiber interface module sealing uses special work
Skill processing meets the requirement such as waterproof and dustproof, and distinct interface is designed using different colour bands and fault-tolerant key mapping, anti-error plug；By connecing
Mouthful standardization, reduction accidentally touches, mis-wired possibility, is conducive to realize the replaceable maintenance of secondary device and plug and play.
3. a kind of site line protective devices based on function Top-down design according to claim 1, it is characterised in that:
The power module includes: dc power interface, battery module, opens into module and analogue collection module, and battery module is used for
Whole device system is powered, is opened into module for acquiring external intake, analogue collection module for collection voltages,
Current signal.
4. a kind of site line protective devices based on function Top-down design according to claim 1, it is characterised in that:
Site line protective devices are designed using no liquid crystal display, by the way that intelligent management unit is arranged as whole station site in control room
The man-machine interface of protective device is completed interface and is concentrated displaying, control operation, configuration pipe using IEC61850 unified Modeling technology
Reason, backup management, the monitoring of protection equipment on-line and diagnostic function realize the long-range pipe of intelligence to whole station site secondary device
Reason.
5. a kind of site line protective devices based on function Top-down design according to claim 1, it is characterised in that:
Using Thermal Synthetic, electromagnetic shielding, mechanical strength structure-design technique, by die cast metal cabinet, metal cover board and internal thermally conductive screen
Supporting structure component devices structural system is covered, and once forms thermally conductive shielding support knot inside installation on die cast metal cabinet
Heat loss through conduction face needed for component and support mounting surface.
6. a kind of site line protective devices based on function Top-down design according to claim 5, it is characterised in that:
Conductive seal item is installed between die cast metal cabinet and metal cover board, realizes electromagnetism between die cast metal cabinet and metal cover board
The reliable overlap joint of shielding；It is led inside installation on the one-time formed heat loss through conduction face of die cast metal cabinet and support mounting surface simultaneously
Heat shielding supporting structure forms internal electromagnetic armouring structure, separating device interface circuit and processing circuit installation space, reduces
The spatial electromagnetic invaded from device interface circuit harasses the influence to processing circuit, improves device entirety Electro Magnetic Compatibility.
7. a kind of site line protective devices based on function Top-down design according to claim 5, it is characterised in that:
Using thermally conductive shielding support construction inside being installed on the one-time formed heat loss through conduction face of die cast metal cabinet and support mounting surface
Part forms cabinet inside keel structure, increases system structure intensity, reduces the electricity of internal system caused by external mechanical stress
Road plate mechanical deformation improves device for mechanical environmental adaptability.
8. a kind of site line protective devices based on function Top-down design according to claim 5, it is characterised in that:
Using thermally conductive shielding support construction inside being installed on the one-time formed heat loss through conduction face of die cast metal cabinet and support mounting surface
Part, will be unable to directly by the heating device layout of die cast metal cabinet and metal cover board heat loss through conduction with internal thermally conductive shielding
In the adjacent plane of supporting structure, the heat of the heating device can be passed through internal thermally conductive shielding supporting structure and metal pressure
Cabinet heat loss through conduction is cast, the stack board structure of circuit for solving site installation protective relaying device has asking for heat dissipation blind area
Topic improves device atmospheric temperature environmental adaptability.
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| CN108631257B (en) * | 2018-05-10 | 2020-03-17 | 许继集团有限公司 | In-situ component protection system |
| CN109449927A (en) * | 2018-11-14 | 2019-03-08 | 国网青海省电力公司检修公司 | In-situ protection device |
| CN109525041B (en) * | 2018-12-29 | 2023-09-26 | 北京智芯微电子科技有限公司 | Secondary relay protection chip of intelligent substation and data interaction method |
| CN113675811A (en) * | 2020-05-14 | 2021-11-19 | 国网福建省电力有限公司电力科学研究院 | CPU plug-in and relay protection device based on SOC chip |
| CN112925446B (en) * | 2020-08-21 | 2023-03-31 | 友达光电股份有限公司 | Electronic device |
| CN112714606A (en) * | 2020-12-29 | 2021-04-27 | 安徽盛世天朗软件科技有限公司 | Data transmission electromagnetic interference prevention device for network equipment and implementation method thereof |
| CN113098591B (en) * | 2021-02-24 | 2022-04-01 | 云谷技术(珠海)有限公司 | Distributed DTU optical fiber differential protection circuit |
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