CN206164081U - Distribution network system line protection device - Google Patents
Distribution network system line protection device Download PDFInfo
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- CN206164081U CN206164081U CN201621092398.7U CN201621092398U CN206164081U CN 206164081 U CN206164081 U CN 206164081U CN 201621092398 U CN201621092398 U CN 201621092398U CN 206164081 U CN206164081 U CN 206164081U
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Abstract
The utility model relates to a distribution network system line protection device, including host system, and with AD sampling module that host system connects, open / leave module, man -machine interaction module and ethernet module, still include through open / leave the tripping and closing module that module and host system are connected, wherein, AD sampling module has the multichannel sampling channel, host system is provided with a control interface and the 2nd control interface, host system connects through a control interface man -machine interaction module connects through the 2nd control interface the ethernet module. The utility model discloses a distribution network system line protection device has improved data collection precision and has gathered efficiency.
Description
Technical field
This utility model is related to relay protection device field, more particularly to a kind of distribution network system line protective devices.
Background technology
Jing low resistance groundings distribution net work earthing fault generally adopts zero-sequence current protection, although for gold in actual motion
Attribute earth fault has preferable responding ability, but in the case of it there is transition resistance, then susceptiveness is poor, and for
The situation of high resistance ground is also difficult to the defect of reliable recognition.In order to solve high resistance ground, current way is original
On the basis of zero-sequence current protection, introduce the electric parameters such as residual voltage and constitute Adaptive Zero-sequence Current Protection.
However, at present country's distribution network line protection device has that sampling precision and sample frequency are relatively low, nothing
Method fully meets route protection requirement.
Utility model content
Based on this, it is necessary to for the low problem of conventional electrical distribution net system line protection device sampling precision, there is provided a kind of
New distribution network system line protective devices.
This utility model is employed the following technical solutions：
A kind of distribution network system line protective devices, including main control module, and the A/D being connected with the main control module adopts
Egf block, open into/output module, human-computer interaction module and ethernet module, also include by open into/output module and master control
The breaker tripping and closing module of module connection；
Wherein, the A/D sampling modules have multi-channel sampling passage；
The main control module is provided with the first control interface and the second control interface, and the main control module is by the first control
Interface connects the human-computer interaction module, and by the second control interface the ethernet module is connected.
Used as an optimal way, main control module is provided with the ARM cores and DSP core of shared section key, the ARM cores
Communicated to connect by parallel interface with DSP core.
Used as an optimal way, the A/D sampling modules include that at least two micro mutual inductors, at least two-way analog quantity are low
Pass filter and some multi-channel As/D conversion chips；
The micro mutual inductor is connected to a certain of multi-channel A/D conversion chips by corresponding analog quantity low-pass filtering respectively
Road signal input part.
As an optimal way, the A/D sampling modules include 16 micro mutual inductors, 16 tunnel analog quantity low-pass filtering and
28 road A/D conversion chips；
The micro mutual inductor includes current transformer and voltage transformer, the current transformer and voltage transformer
Total amount is 16.
As an optimal way, it is described open into/output module and include：CPLD, the first light-coupled isolation,
Second light-coupled isolation and relay；
The input of the CPLD passes through respectively the first light-coupled isolation, the second light-coupled isolation, relay
Device connects the main control module.
Used as an optimal way, first light-coupled isolation is two-stage light-coupled isolation, and second light-coupled isolation is single-stage
Light-coupled isolation.
Used as an optimal way, the breaker tripping and closing module includes manual breaker tripping and closing relay and remote control breaker tripping and closing relay.
Used as an optimal way, the human-computer interaction module includes display screen and keyboard；
First control interface includes SPI interface and I2C interfaces, and the main control module is aobvious by SPI interface connection
Display screen curtain, by I2C interfaces keyboard is connected.
Used as an optimal way, the ethernet module includes following IEEE 802.3-2002 specifications and support IEC
The 100 m ethernet controller of 61850 standards and Ethernet interface；
Second control interface is MII interfaces；
The Ethernet interface includes electric Ethernet interface and luminiferous ether network interface.
As an optimal way, also including JTAG modules and power module；
The main control module is additionally provided with the 3rd control interface being connected with the ARM cores and DSP core, the master
Control module connects the JTAG modules by the 3rd control interface；
The main control module is also connected with the power module.
Above-mentioned distribution network system line protective devices, can improve number by the various electric parameters of high-performance A/D conversion collection
According to acquisition precision and collecting efficiency；And based on ethernet module, facilitate implementation the information with protection information substation, control centre
Interaction.
Description of the drawings
Fig. 1 is the distribution network system line protective devices schematic diagram of an embodiment；
Fig. 2 be an embodiment distribution network system line protective devices in main control module 10 structural representation.
Specific embodiment
To enable goal of the invention of the present utility model, feature, advantage more obvious and understandable, below in conjunction with attached
Figure, is clearly and completely described to the technical scheme in this utility model embodiment.
Fig. 1 is the distribution network system line protective devices schematic diagram of an embodiment, as shown in figure 1, the distribution of the present embodiment
Net system line protection device mainly include main control module 10, and be connected with the main control module 10 A/D sampling modules 20,
Open into/output module 30, human-computer interaction module 50 and ethernet module 60, also include by it is described open into/output module 30
Connect the breaker tripping and closing module 40 of the main control module 10.Wherein, the A/D sampling modules 20 have multi-channel sampling passage；It is described
Main control module 10 is provided with an ARM core and a DSP core of shared section key, be additionally provided with the first control interface,
Two control interfaces, the ARM cores connect respectively first control interface and the second control interface, the ARM cores and DSP
Core is communicated to connect by parallel interface；The main control module 10 connects the human-computer interaction module by the first control interface
50, the ethernet module 60 is connected by the second control interface.
Used as a preferred implementation, the ethernet module 60 includes following IEEE 802.3-2002 specifications and support
The ethernet controller of the standards of IEC 61850, also includes the Ethernet interface being connected with the ethernet controller.The Ethernet
Controller includes MAC controller unit and network physical layer unit, supports the precise synchronizations of IEEE 1588.It is described
Ethernet interface is configured with electric Ethernet interface and luminiferous ether network interface, and communication interface is enriched, applied widely, powerful.It is described with
Too net module 60 supports that the substation level MMS (Manufacturing Message Specification) of IEC 61850 leads to
Letter；The MMS messages in the substation level buses of IEC 61850 can be also received and dispatched, is realized and protection information substation, the information of control centre
Interaction.
Used as a preferred implementation, the second built-in control interface of the main control module 10 is MII (Medium
Independent Interface) interface, the main control module 10 is connected by MII interfaces with the ethernet module 60, is used
In realizing compatible different types of ethernet module 60.
Preferably, the ethernet module 60 is core using 100,000,000 network control chip KSZ8995, is configured with two electricity
Ethernet interface and two luminiferous ether network interfaces.Corresponding ethernet module 60 supports the substation level MMS communication of IEC 61850, can
MMS messages in the substation level buses of IEC 61850 are received and dispatched by the ethernet module 60, is realized and protection information substation, control
The information exchange at center processed.
Based on above-mentioned distribution network system line protective devices, various electric parameters can be gathered by high-performance A/D modular converter,
Improve accuracy of data acquisition and collecting efficiency；And based on ethernet module, facilitate implementation with protection information substation, control in
The information exchange of the heart.
Used as a preferred implementation, described distribution network system line protective devices also include JTAG (Joint Test
Action Group) module 70 and power module 80.The main control module 10 is additionally provided with and the ARM cores and DSP core
3rd control interface of heart connection, the main control module 10 connects the JTAG modules 70 by the 3rd control interface；The master
Control module 10 is also connected with the power module 80.It is other in distribution network system line protective devices by power module 80
Module provides electric energy.
Preferably, the 3rd control interface is 14 pin jtag interfaces of standard, and it is right to be realized by the JTAG modules 70
The debugging of device and configuration.The power module 80 be miniaturization switch power module 80, be easy to it is integrated, its input be 110V/
The alternating current or unidirectional current of 220V, varying level direct voltage output, the power module input are obtained Jing after the commutation inversion of inside
Alternating voltage amplitude range is 85～256V, power module output DC voltage include but is not limited to 5V, 7.5V and
24V。
As shown in Figure 2, it is preferred that the main control module 10 is processed using the F28M36P63C2 double-cores of Texas Instrument's production
Device chip, including a dominant frequency is the DSP core of 150MHz and the ARM cores of 100MHz, the DSP core and the ARM cores
The heart is connected by HPI (HOST PORT INTERFACE) interface communication.It is pre- that the DSP core is responsible for carrying out data acquisition, data
Process and protect the work such as differentiation；The ARM cores are responsible for including the human-computer interactive control including display, button, and net
Network communication process.Data exchange is carried out by shared drive (ShareRAM) between the DSP core and the arm processor.
Thus, the task of different requirement of real-time and significance level point is by different core process, be conducive to intensifier reliability,
Stability and robustness.
Used as a preferred implementation, the A/D sampling modules 20 include at least two micro mutual inductors, at least two-way mould
Analog quantity low-pass filtering and some multi-channel As/D conversion chips；The quantity of the micro mutual inductor and the analog quantity low-pass filtering
Quantity is identical, and total way of some multi-channel As/D conversion chips is identical with the quantity of the micro mutual inductor；It is described miniature mutual
Sensor is connected to respectively certain signal input part all the way of multi-channel A/D conversion chips by corresponding analog quantity low-pass filtering.
Preferably, the A/D sampling modules 20 connect main control module 10 by system bus.The A/D sampling modules 20
Including 16 micro mutual inductors, 16 tunnel analog quantity low-pass filtering and 28 road A/D conversion chips；The micro mutual inductor includes electricity
The total amount of current transformer and voltage transformer, the current transformer and voltage transformer is 16.For example：With high-precision A/D
Sampling A/D chip AD7606 is core, including micro mutual inductor, analog quantity low-pass filtering and A/D change-over circuits.Micro mutual inductor
Part is preferably using the current transformer and the voltage transformer of 120V/7.07V of electric current 20A/7.07V.Analog quantity low-pass filtering
Part preferably adopts second order RC lowpass filter, and its cut-off frequency is 1kHz.A/D conversion portions preferably adopt AD7606 chips,
There are 16 precision, the sample frequency of maximum 200kHz, the A/D sampling modules 20 are connected with the Jing buses of main control module 10, correspondence
Distribution network system line protective devices 16 road A/D sampling channels at most can be installed, compared to conventional apparatus, it adopts efficiency
It is high.
As a preferred implementation, it is described open into/output module 30 by system bus connect main control module 10.It is described
Open into/output module 30 and include：Complex programmable logic device (CPLD) (Complex Programmable Logic
Device), the first light-coupled isolation, the second light-coupled isolation and relay；The input of the CPLD point
Tong Guo not the first light-coupled isolation, the second light-coupled isolation, the relay connection main control module 10.Preferably, first optocoupler
Two-stage light-coupled isolation is isolated into, second light-coupled isolation is single-stage light-coupled isolation.For example：It is described open into/output module 30 by
The EBI Jing CPLD chips extension composition of DSP core, wherein 12 tunnel intakes are input into by two-stage light-coupled isolation, supports
110V/220V intakes are input into；Wherein 4 tunnel intakes are input into by single-stage light-coupled isolation, support the input of 24V intakes；Wherein 6
The road amount of outputing is exported by relay, and contact maximum capacity is, 250V/5A.
As a preferred implementation, the breaker tripping and closing module 40 include manual breaker tripping and closing relay and remote control breaker tripping and closing after
Electrical equipment, breaker tripping and closing module Jing open into/output module and be connected with main control module.Additionally, the breaker tripping and closing module 40 has certainly
The tripping operation of holding and closing circuit, maximum can bear the breaker tripping and closing electric current of 6A；With position signalling, accident signal, control loop
The function of disconnection signal output.
Used as a preferred implementation, the human-computer interaction module 50 includes display screen and keyboard；The display screen
Curtain for exporting the user interface of fault message or fault detect, the keyboard be used for user input operational order or
Detection parameter.Corresponding, the first built-in control interface of the main control module 10 includes SPI (Serial Peripheral
Interface) interface and I2C (Inter-Integrated Circuit, twin wire universal serial bus) interface, the master control mould
Block 10 connects display screen by SPI interface, and by I2C interfaces keyboard is connected.
Preferably, the display screen is colored TFT (Thin-Film Transistor) screen of built-in driving chip；
The built-in driving chip of the display screen, the built-in backlight adjustment module of the display screen.For example：Using 4.3 inch color TFT
Screen, its resolution is 480*272, and the built-in controller Jing SPI interfaces of the TFT screens are connected with ARM cores, the display
Module uses TPS61080 chip controls TFT screen backlight.
Preferably, the keyboard is matrix keyboard, and by matrix keyboard keyboard special chip key scan is carried out.For example：
4*5 matrix keyboards are scanned using keyboard chip TCA8418, and by I2C interfaces and the ARM cores of main control module 10
(AM1707 chips) is communicated.
The distribution network system line protective devices of above-described embodiment, can gather various electric parameters by the conversion of high-performance A/D,
Improve accuracy of data acquisition and collecting efficiency；And based on ethernet module, facilitate implementation with protection information substation, control in
The information exchange of the heart；And realize that the self adaptation in the case of different faults differentiates by its powerful computing capability.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (10)
1. a kind of distribution network system line protective devices, it is characterised in that including main control module, and connect with the main control module
The A/D sampling modules that connect, open into/output module, human-computer interaction module and ethernet module, also include by open into/output
The breaker tripping and closing module that module is connected with main control module；
Wherein, the A/D sampling modules have multi-channel sampling passage；
The main control module is provided with the first control interface and the second control interface, and the main control module passes through the first control interface
Connect the human-computer interaction module, the ethernet module is connected by the second control interface.
2. distribution network system line protective devices according to claim 1, it is characterised in that the main control module is provided with
The ARM cores of shared section key and DSP core, the ARM cores are communicated to connect with DSP core by parallel interface.
3. distribution network system line protective devices according to claim 1, it is characterised in that the A/D sampling modules bag
Include at least two micro mutual inductors, at least two-way analog quantity low-pass filtering and some multi-channel As/D conversion chips；
The micro mutual inductor is connected to certain of multi-channel A/D conversion chips by corresponding analog quantity low-pass filtering respectively to be believed all the way
Number input.
4. distribution network system line protective devices according to claim 3, it is characterised in that the A/D sampling modules bag
Include 16 micro mutual inductors, 16 tunnel analog quantity low-pass filtering and 28 road A/D conversion chips；
The micro mutual inductor includes the total amount of current transformer and voltage transformer, the current transformer and voltage transformer
For 16.
5. distribution network system line protective devices according to claim 1, it is characterised in that it is described open into/output module
Including：CPLD, the first light-coupled isolation, the second light-coupled isolation and relay；
The input of the CPLD is connected respectively by the first light-coupled isolation, the second light-coupled isolation, relay
Connect the main control module.
6. distribution network system line protective devices according to claim 5, it is characterised in that first light-coupled isolation is
Two-stage light-coupled isolation, second light-coupled isolation is single-stage light-coupled isolation.
7. distribution network system line protective devices according to claim 1, it is characterised in that the breaker tripping and closing module includes
Manual breaker tripping and closing relay and remote control breaker tripping and closing relay.
8. according to the arbitrary described distribution network system line protective devices of claim 1 to 7, it is characterised in that the man-machine friendship
Mutually module includes display screen and keyboard；
First control interface includes SPI interface and I2C interfaces, and the main control module connects display screen by SPI interface
Curtain, by I2C interfaces keyboard is connected.
9. according to the arbitrary described distribution network system line protective devices of claim 1 to 7, it is characterised in that the Ethernet
Module includes following the 100 m ethernet controller and Ethernet of IEEE 802.3-2002 specifications and the support standards of IEC 61850
Mouthful；
Second control interface is MII interfaces；
The Ethernet interface includes electric Ethernet interface and luminiferous ether network interface.
10. distribution network system line protective devices according to claim 2, it is characterised in that also including JTAG modules and
Power module；
The main control module is additionally provided with the 3rd control interface being connected with the ARM cores and DSP core, the master control mould
Block connects the JTAG modules by the 3rd control interface；
The main control module is also connected with the power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621092398.7U CN206164081U (en) | 2016-09-28 | 2016-09-28 | Distribution network system line protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621092398.7U CN206164081U (en) | 2016-09-28 | 2016-09-28 | Distribution network system line protection device |
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| Publication Number | Publication Date |
|---|---|
| CN206164081U true CN206164081U (en) | 2017-05-10 |
Family
ID=58652140
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621092398.7U Active CN206164081U (en) | 2016-09-28 | 2016-09-28 | Distribution network system line protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276056A (en) * | 2017-08-08 | 2017-10-20 | 徐州鑫贝克电力设备有限公司 | A kind of intelligent substation real-time monitoring system based on ARM |
| CN108594012A (en) * | 2018-07-05 | 2018-09-28 | 滁州安瑞电力自动化有限公司 | A kind of motor protection measure and control device having electric energy acquisition function |
-
2016
- 2016-09-28 CN CN201621092398.7U patent/CN206164081U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276056A (en) * | 2017-08-08 | 2017-10-20 | 徐州鑫贝克电力设备有限公司 | A kind of intelligent substation real-time monitoring system based on ARM |
| CN108594012A (en) * | 2018-07-05 | 2018-09-28 | 滁州安瑞电力自动化有限公司 | A kind of motor protection measure and control device having electric energy acquisition function |
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