CN107611941A - A kind of site line protective devices based on function Top-down design - Google Patents

Abstract

The invention discloses a kind of site line protective devices based on function Top-down design, and the functions such as route protection, circuit combining unit and intelligent terminal are carried out into Vertical Combination, is integrated to the veneer part in a protection 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; real-time is applied in raising; meet that miscellaneous equipment will shorten operating time of protection to line segregation sampled data and control resource-sharing simultaneously, and data acquisition and control is provided performs support for the end equipment of standing such as station domain protection, stability control equipment.

Description

A kind of site line protective devices based on function Top-down design

Technical field

The present invention relates to a kind of site line protective devices based on function Top-down design, belong to power system relay guarantor Protect technical field.

Background technology

Conventional substation protection equipment is typically mounted at control room or protective chamber, is directly sampled using cable, directly jumped Lock, distant between a secondary device, cable is longer, and CT saturations, multipoint earthing, loop crosstalk, distribution capacity may be brought to put The problems such as electric, while data sharing can not be realized.

Data sharing is realized in application of the intelligent substation by increasing 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 change of new equipment and mounting means The problem of some are new is carried out：(1) protection collection, the intermediate link of trip signal transmission are added, causes the whole group of route protection Actuation time extends 5-10ms.The quick-action and reliability of main protection are reduced, makes operation of power networks in the border 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, influences protection system Reliability.(3) secondary device species is various, secondary circuit is complicated, and the workload such as field connection, configuration, debugging and maintenance is big, peace Adjust and the repair time is significantly elongated compared to normal station.

The Yang Zhi of document 1 is grand 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-2016 International A kind of intelligence change realized based on discrete plate is proposed in Forum on Smart Grid Protection and Control Power station Top-down design equipment design and system integration scheme, combining unit function, defencive function, intelligent terminal function are integrated in One table apparatus difference plate realizes solve the problems such as device category and quantity are more, configuration is complicated.

China has accepted patent 201510370184.5 " a kind of multi-functional Top-down design device towards interval " and 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, be by intelligence Energy transformer station combining unit function, defencive function, intelligent terminal function are realized by three different devices and are changed to inside same device Different plates (board) realize, although this method saves data transmission period between device, but data transfer plate be present between pass Defeated delay, therefore the lifting of protection act speed is limited, it is still slower than conventional substation route protection.On the other hand, document 1,2 and Accept and Top-down design equipment is put forward in patent 201510370184.5 in terms of equipment protection grade, antijamming capability compared to tradition Secondary device still needs to be arranged on the spot in convergence control cabinet without being obviously improved, equally exist high equipment failure rate, bad weather maintenance, Debug the problems such as difficult, therefore do not solve protection quick-action, integrity problem that intelligent substation is brought very well.

The content of the invention

Purpose：In order to shorten operating time of protection, reduction number of devices and species, simplified configuration, conveniently 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 scheme：In order to solve the above technical problems, the technical solution adopted by the present invention is：

A kind of site line protective devices based on function Top-down design, including：Casing, cover plate, supporting structure, just Integrated design and on the spot unshielded mounting design of the ground line protective devices using function Top-down design, including：A, function Top-down design site line protective devices merge route protection, circuit 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 protection device Nei and realize, by shortening data Real-time is applied in transmission path time, raising, while meets miscellaneous equipment to line segregation sampled data and control resource-sharing Requirement；B, site line protective devices use highly reliable guard technology, should using strong electromagnetic, machinery and climatic environment is adapted to The complicated intelligent electronic device system structure design technology of power, solve under compact Cabinet Size specification in complicated intelligent electronic device External force condition that circuit board uses between each circuit board caused by polylith parallel arrangement that electromagnetic disturbance coupling is strong, cabinet withstands shocks Lower circuit board is easily mechanically damaged the problem of heat dissipation for circuit board difficulty with parallel construction centre position, meets that scene is unshielded straight Connect installation requirement；C, site line protective devices use designs without liquid crystal display, by setting intelligent management unit in control room Man-machine interface as whole station site protection device；D, site line protective devices are designed using standard interface, are reduced Touch, mis-wired possibility, created conditions for the replaceable maintenance of protection equipment and plug and play by mistake；The casing top is provided with case Body cover plate, conductive seal bar is provided between casing and box cover, is divided into casing by heat conduction barricade in the middle part of casing Lower two layers, casing lower level floor is provided with insulation board, and heat conduction copper billet is provided with insulation board, and being provided with insulation on heat conduction copper billet leads Heat pad, power module is provided with insulating heat-conductive pad；Casing lower level floor is provided with the first supporting structure, the first supporting construction It is provided with part and outputs module, the module of outputing is connected by double-row terminal with power module；At the top of the heat conduction barricade Heat conductive insulating pad is provided with, is connected at the top of the heat conductive insulating pad with heater element in CPU module, the heat conductive insulating pad top Portion is additionally provided with the second supporting structure, and fiber interface module is provided with the second supporting structure, and fiber interface module passes through High speed connection terminal is connected with CPU modules；It is provided with and leads between optical module and box cover bottom on fiber interface module Heat insulation pad；Casing lower floor is provided with three row's terminals, and power module is connected by three row's terminals with CPU modules.

Preferably, the CPU module includes：SOC, FPGA, ADC chip and Ethernet PHY chip；It is described Instruction of the module for receiving CPU module is outputed to be tripped.

Preferably, the SOC includes：One CPU management core and two DSP cores, CPU management core are completed Apparatus system configuration, event and recording management function；DSP1 cores complete route protection, intelligent terminal function, its task scheduling week Phase INT0 is 833us, 1.2K；DSP2 examines existing protection and starts calculating and combining unit function, and its task scheduling cycle has INT0,833us, 1.2K, INT1,250us, 4K；FPGA includes：FPGA, communication FPGA are sampled, sampling FPGA is used for ADC moulds Analog quantity carries out high speed acquisition and provides sampled data to two DSP cores by way of snap shot or resampling；FPGA pairs of communication It is interior that MMS, GOOSE/SV data interaction are carried out by PCIe interface and SOC, externally pass through MII interfaces and ethernet PHY Chip is connected, and directly connects fiber interface module by SerDes interfaces, externally provide HSR interfaces, point-to-point networking mouth and Vertical UNICOM road communication interface, communication FPGA also complete the synchronization of IRIG-B decodings, time-triggered protocol, hardware interrupts and all kinds of sequential Processing function；Sampling FPGA and produce INT0,1.2K interrupts to be used to protection CPU, and carries out 24KHz according to the interrupt interval, 24000 points/second high-speed sampling, every 20 points are extracted a point data and are sent to protection CPU uses；For optical fiber differential protective, in fact The synchronization of existing two side datas, need to realize both sides synchronized sampling, 24KHz high speed outputs interval by adjusting INT0 intervals length Also adjustment in real time can be changed according to INT0；Protection device by using high-speed sampling snap shot and Sampling interrupt interval adjustment realize and Offside sample-synchronous, data reduce amount of calculation, shorten sampling time delay without resampling.

Preferably, the fiber interface module includes：Vertical UNICOM pipeline joint, SV/GOOSE interfaces, MMS communication Mouth, HSR ports, debugging mouth, for supporting SV/GOOSE common network+MMS independence networkings, the nets of SV, GOOSE, MMS tri- are supported to close One, signal when the two-way HSR looped networks of point-to-point communication, whole station SV/GOOSE/MMS, transmission indulge difference signal and receive B codes pair, 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 is touched by mistake, mis-wired possibility, replaceable beneficial to secondary device is realized Maintenance and plug and play.

Preferably, the power module includes：Dc power interface, battery module, open into module and analog quantity Acquisition module, battery module are used to be powered whole device system, open and are used to gather outside intake, analog quantity into module Acquisition module is used for collection voltages, current signal.

Preferably, site line protective devices use designs without liquid crystal display, by setting intelligence in control room Man-machine interface of the administrative unit as whole station site protection device, using IEC61850 unified Modeling technologies, complete interface collection Middle displaying, control operation, configuration management, backup management, protection equipment on-line monitoring and diagnostic system function, are realized to whole station site The intelligent remote management of secondary device.

Preferably, using Thermal Synthetic, electromagnetic shielding, mechanical strength structure-design technique, by die cast metal casing, Metal cover board and internal heat conduction shielding supporting structure component devices structural system, and the once shaping peace on die cast metal casing Heat loss through conduction face and support mounting surface needed for the internal heat conduction shielding supporting structure of dress.

Preferably, conductive seal bar is installed between die cast metal casing and metal cover board, realizes die cast metal The reliable overlap joint being electromagnetically shielded between casing and metal cover board；Simultaneously in the one-time formed heat loss through conduction face of die cast metal casing and The internal heat conduction shielding supporting structure of installation on mounting surface is supported, forms internal electromagnetic armouring structure, separating device interface circuit With process circuit installing space, the spatial electromagnetic reduced from the intrusion of device interface circuit harasses the influence to process circuit, improves Device entirety Electro Magnetic Compatibility.

Preferably, installed using on the one-time formed heat loss through conduction face of die cast metal casing and support mounting surface Internal heat conduction shields supporting structure, forms cabinet inside keel structure, increases system architecture intensity, reduces outside machinery Internal system circuit board mechanical deformation caused by stress, improve device for mechanical environmental adaptability.

Preferably, installed using on the one-time formed heat loss through conduction face of die cast metal casing and support mounting surface Internal heat conduction shields supporting structure, will be unable to directly by die cast metal casing and the heater members of metal cover board heat loss through conduction It is laid out in the plane adjacent with internal heat conduction shielding supporting structure, the heat of the heater members can be passed through internal heat conduction screen Supporting structure and die cast metal casing heat loss through conduction are covered, the stack circuit board for solving site installation protective relaying device There is the problem of radiating blind area in structure, improve device atmospheric temperature environmental adaptability.

Beneficial effect：A kind of site line protective devices based on function Top-down design provided by the invention, based on work( Can Top-down design, the site route protection of unshielded installation, by integrated design, Top-down design monospace combining unit, Protection and intelligent terminal function, device type and quantity are reduced, 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 perform support.External interface is adopted With standardized designs, beneficial to realizing the replaceable maintenance of secondary device and plug and play.Using the high air of adaptation, electromagnetism, mechanical ring The complicated intelligent electronic device overall construction design of border stress, enables protection to make the extremely low temperature of adaptation, very high temperature, High aititude, strong salt The outdoor unshielded installation of the extreme environmental conditions such as mist.

Brief description of the drawings

Fig. 1 is the site line protective devices mechanical structure schematic diagram of the present 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 that it is sampled after site route protection of the present invention uses Top-down design technology, tripping operation flow.

Embodiment

The present invention is further described below in conjunction with the accompanying drawings.

As shown in figure 1, this application discloses a kind of site line protective devices based on function Top-down design, including： Casing 1, metal cover board 3 and the multiple internal heat conduction shielding supporting structures of die cast metal；The top of casing 1 is provided with casing Cover plate 3, is provided with conductive seal bar 2 between casing 1 and box cover 3, the middle part of casing 1 is by heat conduction barricade 10 by casing 1 It is divided into two layers up and down, the lower level floor of casing 1 is provided with insulation board 15, and heat conduction copper billet 14, heat conduction copper billet are provided with insulation board 15 Insulating heat-conductive pad 13 is provided with 14, power module 12 is provided with insulating heat-conductive pad 13；The lower level floor of casing 1 is provided with first Supporting structure 19, it is provided with the first supporting structure 19 and outputs module 11, the module 11 of outputing passes through double-row terminal 16 It is connected with power module 12；The top of the heat conduction barricade 10 is provided with heat conductive insulating pad 9, the top of heat conductive insulating pad 9 with Heater element 8 is connected in CPU module 7, and the top of the heat conductive insulating pad 9 is additionally provided with the second supporting structure 20, second Fiber interface module 6 is provided with support structure part 20, fiber interface module 6 is connected by high speed connection terminal 18 with CPU module 7 Connect；Heat conductive insulating pad 5 is provided between optical module 4 and the bottom of box cover 3 on fiber interface module 6；The lower floor of casing 1 is set There are three row's terminals 17, power module 12 is connected by three row's terminals 17 with CPU module 7.

Die casting casing and cover plate mating surface installation conductive seal bar, realize that what is be electromagnetically shielded between casing and cover plate reliably takes Connect, while supporting structure is shielded by using internal heat conduction, device external interface circuit and internal process circuit are divided Storehouse, improve device entirety Electro Magnetic Compatibility.By installing support on the one-time formed fastening structure face of die cast metal casing Structural member, increase the installation fixing intensity between casing interior circuit board and structural member, reduce the machine of internal circuit board and structural member Tool deformation, improve equipment overall structure intensity.And by installing supporting structure, cover plate and casing heat loss through conduction can not be touched Heater members with supporting structure is ingenious contacts, solve to radiate under relay protection Complex Electronic Systems Based stack circuit structure blind The problem of area, improve device integral heat sink performance.

To ensure 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 transfers heat to heat conduction barricade, heat conduction barricade again will by heat conductive insulating pad in CPU module Heat transfer is to casing.

The main heater element of fiber interface module is optical module, and heat conductive insulating is installed between optical module and box cover Pad；By optical module heat transfer to box cover.

Heat conduction 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 casing.

As shown in Fig. 2 the CPU module includes：SOC, field programmable gate array (hereinafter referred to as FPGA), ADC Chip and Ethernet PHY chip.SOC includes：One CPU management core and two DSP cores, CPU management core finishing device system It is under unified central planning put, the management function such as event and recording；DSP1 cores complete route protection, intelligent terminal function；DSP2 cores are completed to merge list Meta function.FPGA includes：FPGA, communication FPGA are sampled, sampling FPGA is used to carry out ADC analog quantitys high speed acquisition and by taking out Point or the mode of resampling provide sampled data to two DSP cores；Communication FPGA passes through PCIe interface and SOC to interior MMS, GOOSE/SV data interaction are carried out, is externally connected by MII interfaces with Ethernet PHY chip, and directly pass through SerDes Interface connects fiber interface module, externally provides the communication interfaces such as HSR interfaces, point-to-point networking mouth and vertical UNICOM road, communication FPGA also completes the functions such as the synchronization process of IRIG-B decodings, time-triggered protocol, hardware interrupts and all kinds of sequential.

The fiber interface module includes：100000000 optical modules, gigabit optical module, vertical connection channel module and B code modules, are used for Point-to-point communication, set up HSR communications looped network, transmit signal etc. when indulging difference signal and receiving B codes pair.

The power module includes：Battery module, open into module and analogue collection module, battery module is for whole Apparatus system is powered, and is opened and is used to gather outside intake into module, analogue collection module is used for collection voltages, electric current is believed 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 function such as road combining unit and intelligent terminal carries out Vertical Combination, is integrated to the veneer part in a protection device Nei and realizes.It is logical The shortening data transfer path time is spent, real-time is applied in raising, while meets miscellaneous 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 that to complete institute simultaneously functional.Just Ground route protection applies advanced SOC 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 quantitys and pretreatment, IRIG-B decodings and time-triggered protocol, hardware interrupts, all kinds of sequential synchronization at Reason and with the data interaction interface of processor etc., DSP core completes route protection, circuit 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 It is distributed in etc. function 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 function such as event and recording；DSP1 realizes protection and intelligent terminal function, its Dispatching cycle of being engaged in (INT0) is 833us (1.2K)；DSP2 realizes combining unit function, and its task scheduling cycle (INT1) is 250us(4K)。

As shown in figure 3, during system operation, sampling FPGA generation INT0 (1.2K) interrupt to be used to protection CPU, and according to this Interrupt interval carries out 24KHz (24000 points/second) high-speed sampling, and every 20 points are extracted a point data and are sent to protection CPU uses.It is right In optical fiber differential protective, to realize the synchronization of two side datas, both sides synchronized sampling need to be realized by adjusting INT0 intervals length, 24KHz high speed outputs 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 offside sample-synchronous, and data reduce amount of calculation, shorten sampling time delay without resampling.

Combining unit function 4KHz sampled value realization principles：FPGA is sampled by 24KHz high-speed sample datas 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 collection moment subtracts firmly Part LPF delay time is that device samples the actual moment.When sampling FPGA carries out being parsed device pair to external clock And track outside effectively second arteries and veins and produce 4KHz interruptions (INT1) at equal intervals, if without outside second arteries and veins, interruption is produced by local 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 modules and makes With.

After site route protection uses Top-down design technology, as shown in Fig. 4, sampling transmission is prolonged for its sampling, tripping operation flow When it is suitable with GPF (General Protection False, relatively intelligent station reduces combining unit software processing, internal transmission, transmission, protection device SV interfaces Transmission time in processing and device, about shortens 5-6ms.Trip protection signal directly drives exit relay, tripping operation by bus Loop transfer delay is identical with GPF (General Protection False, and transmission, protection are intelligent eventually between the internal trip signal plate of relatively intelligent station reduction protection The link such as transmission and intelligent terminal for reception processing between end device.Therefore site route protection responsiveness and normal station protection group This is equal, about shortens 7ms-8ms than intelligent station protection.

For the correct feasibility of the checking present invention, protection quick-action and SV outputs property have been carried out to the protection device of the present invention It can test, as a result see attached list 1~3.

(1) 220kV transmission line of electricity RTDS models are established in emulation.The longitudinal direction collection based on SOC technologies is respectively configured in transmission line of electricity Consummately change protection, the Top-down design protection realized based on discrete plate, intelligent station protection (digital sample), normal station protection 4 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 evolved fault, and the testing time receives tripping operation with the failure generation moment to RTDS breakers Signal is defined.Test result is shown in Table 1.

Result of the test：Top-down design site route protection actuation time and normal station protection based on SOC technologies 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.

The RTDS emulation testing troubles inside the sample space operating time of protections of table 1

(2) system of building merges Elementary Function test.Test event includes apparatus module independence test, punctual mistake Difference examine, step-out resynchronisation service check, sampled value issue centrifugal pump examine, sampling the response time, SV messages integrity check, The experiments such as ac analog collection degree of accuracy inspection, sample-synchronous accuracy test.

Test result is shown in Table 2.

Result of the test：The integrated combining unit function of site route protection, leading indicator all reach combining unit requirement Standard.

The SV output function test results of table 2

(3) highly reliable prevention.Reliable protection testing experiment is carried out to the protection device of the present invention, reliable protection is surveyed Examination is mainly verified from experiments such as electromagnetic compatibility, machinery, environment, life-spans, compared with other protection device technologies, is added Solar irradiation, the salt fog of 96 hours, IP67 waterproofs, hammering, fall without packaging multi-angle, the checking of the experiment such as life-span, fast wink, wave Gush, the test class such as Conducted Radio Frequency, surge voltage, machinery improves to self-defined grade, test parameters and is far above other technologies.

The reliability testing of the present invention is with other technologies to such as shown in subordinate list 3.

The reliability testing of the present invention of table 3 contrasts with other technologies

Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (10)

1. a kind of site line protective devices based on function Top-down design, including：Casing, cover plate, supporting structure, it is special Sign is：Integrated design and on the spot unshielded mounting design of the site line protective devices using function Top-down design, are wrapped Include：A, function Top-down design site line protective devices carry out route protection, circuit combining unit and intelligent terminal function Vertical Combination, be integrated to the veneer part in a protection device Nei and realize, eliminate in intelligent substation architectural framework sampling and Tripping data need to inside the transmission delay between different device, device different plug-in unit transmission delays；B, for compact Cabinet Size Circuit board uses electromagnetic disturbance coupling between each circuit board caused by polylith parallel arrangement in complicated intelligent electronic device under specification Circuit board is easily mechanically damaged under the conditions of external force that conjunction is strong, cabinet withstands shocks is stranded with the heat dissipation for circuit board in parallel construction centre position The problem of difficult, site line protective devices use highly reliable guard technology, should using strong electromagnetic, machinery and climatic environment is adapted to The complicated intelligent electronic device system structure design technology of power, meet that scene open air is unshielded and be mounted directly requirement；C, site Line protective devices use to be designed without liquid crystal display, by setting intelligent management unit to be used as whole station site protection dress in control room The man-machine interface put;D, site line protective devices are designed using standard interface, and reduction is touched by mistake, mis-wired possibility, is The replaceable maintenance of protection equipment and plug and play create conditions；E, the casing top is provided with box cover, casing and casing Conductive seal bar is provided between cover plate, casing is divided into two layers up and down by casing middle part by heat conduction barricade, casing lower floor bottom Portion is provided with insulation board, and heat conduction copper billet is provided with insulation board, is provided with insulating heat-conductive pad on heat conduction copper billet, on insulating heat-conductive pad It is provided with power module；Casing lower level floor is provided with the first supporting structure, is provided with the first supporting structure and outputs mould Block, the module of outputing are connected by double-row terminal with power module；Heat conductive insulating pad is provided with the top of the heat conduction barricade, It is connected at the top of the heat conductive insulating pad with heater element in CPU module, second is additionally provided with the top of the heat conductive insulating pad Support structure part, fiber interface module is provided with the second supporting structure, fiber interface module passes through high speed connection terminal and CPU Module is connected；Heat conductive insulating pad is provided between optical module and box cover bottom on fiber interface module；Casing lower floor Three row's terminals are provided with, power module is connected by three row's terminals with CPU module.

A kind of 2. site line protective devices based on function Top-down design according to claim 1, it is characterised in that： The CPU module includes：SOC, FPGA, ADC chip and Ethernet PHY chip；The module of outputing is used to receive CPU moulds The instruction of block is tripped.

A kind of 3. site line protective devices based on function Top-down design according to claim 2, it is characterised in that： The SOC includes：One CPU management core and two DSP cores, CPU management core finishing device system configuration, event and recording Management function；DSP1 cores complete route protection, intelligent terminal function, and its task scheduling cycle INT0 is 833us, 1.2K；DSP2 To examine existing protection and start and calculate and combining unit function, there are an INT0,833us, 1.2K, INT1 in its task scheduling cycle, 250us, 4K；FPGA includes：Sample FPGA, communication FPGA, sampling FPGA be used to carrying out ADC analog quantitys high speed acquisition and by snap shot or The mode of person's resampling provides sampled data to two DSP cores；The FPGA that communicates is carried out to interior by PCIe interface and SOC MMS, GOOSE/SV data interaction, externally it is connected by MII interfaces with Ethernet PHY chip, and directly passes through SerDes interfaces Fiber interface module is connected, HSR interfaces, point-to-point networking mouth and vertical UNICOM road communication interface are externally provided, communication FPGA is also complete Into the synchronization process function of IRIG-B decodings, time-triggered protocol, hardware interrupts and all kinds of sequential；Sample FPGA and produce INT0,1.2K Interrupt and used to protection CPU, and 24KHz is carried out according to the interrupt interval, 24000 points/second high-speed sampling, every 20 points are extracted a bit Data are sent to protection CPU and used；, need to be by adjusting between INT0 to realize the synchronization of two side datas for optical fiber differential protective Both sides synchronized sampling is realized every length, 24KHz high speed outputs interval can also change adjustment in real time according to INT0；Protection device By using high-speed sampling snap shot and the adjustment of Sampling interrupt interval is realized and offside sample-synchronous, and data are reduced without resampling Amount of calculation, shorten sampling time delay.

A kind of 4. 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 UNICOM's pipeline joint, SV/GOOSE interfaces, MMS communication mouth, HSR ports, debugging mouth, use In supporting SV/GOOSE common network+MMS independence networkings, SV, GOOSE, MMS unification of three nets, point-to-point communication, whole station SV/ are supported Signal when the two-way HSR looped networks of GOOSE/MMS, the vertical difference signal of transmission and reception B codes pair, fiber interface module sealing use special work Skill processing, meet the requirement such as waterproof and dustproof, distinct interface is designed using different colour bands and fault-tolerant key mapping, anti-error plug；By connecing Mouthful standardization, reduction is touched by mistake, mis-wired possibility, beneficial to realizing the replaceable maintenance of secondary device and plug and play.

A kind of 5. 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, open and be used for into module and analogue collection module, battery module Whole device system is powered, opens and is used to gather outside intake into module, analogue collection module be used for collection voltages, Current signal.

A kind of 6. site line protective devices based on function Top-down design according to claim 1, it is characterised in that： Site line protective devices use to be designed without liquid crystal display, by setting intelligent management unit to be used as whole station site in control room The man-machine interface of protection device, using IEC61850 unified Modeling technologies, complete interface and concentrate displaying, control operation, configuration pipe Reason, backup management, protection equipment on-line monitoring and diagnostic system function, realize the long-range pipe of intellectuality to whole station site secondary device Reason.

A kind of 7. 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 casing, metal cover board and internal heat conduction screen Cover supporting structure component devices structural system, and the once internal heat conduction shielding support knot of shaping installation on die cast metal casing Heat loss through conduction face and support mounting surface needed for component.

A kind of 8. site line protective devices based on function Top-down design according to claim 7, it is characterised in that： Conductive seal bar is installed between die cast metal casing and metal cover board, realizes electromagnetism between die cast metal casing and metal cover board The reliable overlap joint of shielding；Led simultaneously on the one-time formed heat loss through conduction face of die cast metal casing and support mounting surface inside installation Heat shielding supporting structure, internal electromagnetic armouring structure, separating device interface circuit and process circuit installing space are formed, is reduced The influence to process circuit is harassed from the spatial electromagnetic of device interface circuit intrusion, improves device entirety Electro Magnetic Compatibility.

A kind of 9. site line protective devices based on function Top-down design according to claim 7, it is characterised in that： Using the internal heat conduction shielding supporting construction of installation on the one-time formed heat loss through conduction face of die cast metal casing and support mounting surface Part, cabinet inside keel structure is formd, increase system architecture intensity, reduce internal system electricity caused by outside mechanical stress Road plate mechanical deformation, improve device for mechanical environmental adaptability.

10. a kind of site line protective devices based on function Top-down design according to claim 7, its feature exist In：Using the internal heat conduction shielding support knot of installation on the one-time formed heat loss through conduction face of die cast metal casing and support mounting surface Component, will be unable to directly by the heater members of die cast metal casing and metal cover board heat loss through conduction layout with internal heat conduction screen Cover in the adjacent plane of supporting structure, the heat of the heater members can be shielded supporting structure and metal by internal heat conduction Radiating blind area be present in die casting casing heat loss through conduction, the stack board structure of circuit for solving site installation protective relaying device Problem, improve device atmospheric temperature environmental adaptability.