CN210577045U

CN210577045U - Intelligent ring main unit based on FTU

Info

Publication number: CN210577045U
Application number: CN201921361462.0U
Authority: CN
Inventors: 田秋明
Original assignee: Changde Tianming Switch Manufacturing Co Ltd
Current assignee: Changde Tianming Electric Co.,Ltd.
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-19
Anticipated expiration: 2029-08-21

Abstract

The utility model relates to an intelligence looped netowrk cabinet based on FTU, including power bus, address bus, data bus, FTU system, analog quantity measurement plug-in components, switching value input plug-in components, switching value output plug-in components and latch, analog quantity measurement plug-in components, switching value input plug-in components, switching value output plug-in components all with power bus, data bus connection, analog quantity measurement plug-in components, switching value input plug-in components, switching value output plug-in components all through a latch and address bus connection. The utility model discloses the CPLD chip is nimble high-speed, and the peripheral hardware integrated level is high, measures accurately, and the controllability is strong, and the operation is reliable and stable, adopts the modularization design level clear, has improved the integrated level and the flexibility of equipment, and the photoelectric isolation design of switching value part has improved the stability of system, can realize the measurement to multichannel analog signal.

Description

Intelligent ring main unit based on FTU

Technical Field

The utility model relates to a power supply unit technical field especially relates to an intelligence looped netowrk cabinet based on FTU.

Background

The ring main unit is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts a load switch and a fuse. The transformer substation is widely applied to distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.

At present, the existing ring main unit has low integration level and poor operation stability, and is not easy to measure a plurality of paths of analog signals.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an intelligence looped netowrk cabinet based on FTU has the integrated level height, measures the accuracy, and control capability is strong, moves reliable and stable advantage.

In order to achieve the above object, the utility model provides an intelligence looped netowrk cabinet based on FTU, including power bus, address bus, data bus, FTU system, analog quantity measurement plug-in components, switching value input plug-in components, switching value output plug-in components and latch, analog quantity measurement plug-in components switching value input plug-in components switching value output plug-in components all with power bus the data bus is connected, analog quantity measurement plug-in components switching value input plug-in components switching value output plug-in components all through a latch with address bus connects, the FTU system include the CPLD chip, with address bus interface, analog quantity input module and switching value input output module that the CPLD chip is connected, the analog quantity input module include with the two port RAM chip that the CPLD chip is connected, with the DSP chip that the two port RAM chip is connected, The switching value input/output module comprises an optical coupling isolator connected with the CPLD chip, a relay connected with the optical coupling isolator and an input/output interface connected with the relay, the CPLD chip is connected with a power interface, the address bus interface is connected with the address bus, the analog input interface is connected with the data bus, and the input/output interface is also connected with the data bus.

Furthermore, the CPLD chip is also connected with a communication module, the communication module is a wireless communication module, and the wireless communication module is a wifi module or a 5G module.

Furthermore, a watchdog chip is connected to the CPLD chip.

Has the advantages that:

the utility model discloses a chip is nimble high-speed, and the peripheral hardware integrated level is high, and it is accurate to measure, and controllability is strong, and the operation is reliable and stable, adopts the modularization design level clear, has improved the integrated level and the flexibility of equipment, and the photoelectric isolation design of switching value part has improved the stability of system, can realize the measurement to multichannel analog signal.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a block diagram of an FTU system according to the present invention;

wherein the reference numerals are: 1-power bus; 2-address bus; 3-data bus; 4-FTU system; 401-CPLD chip; 402-dual port RAM chip; 403-DSP chip; 404-a/D converter; 405-a signal conditioner; 406-analog input interface; 407-optical coupler isolator; 408-a relay; 409-input/output interface; 410-watchdog chip; 411 — power interface; 412 — address bus interface; 413 — a communication module; 5-analog quantity measuring plug-in; 6, switching value input plug-in; 7-switching value output plug-in unit; 8-latch.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described below clearly and completely, and it is obvious that the embodiments described below are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the FTU-based intelligent ring main unit of this embodiment includes a power bus 1, an address bus 2, a data bus 3, an FTU system 4, an analog quantity measuring plug 5, a switching quantity input plug 6, a switching quantity output plug 7, and a latch 8, where the analog quantity measuring plug 5, the switching quantity input plug 6, and the switching quantity output plug 7 are all connected to the power bus 1 and the data bus 3, the analog quantity measuring plug 5, the switching quantity input plug 6, and the switching quantity output plug 7 are all connected to the address bus 2 through the latch 8, the FTU system 4 includes a CPLD chip 401, an address bus interface 412 connected to the CPLD chip 401, an analog quantity input module, and a switching quantity input/output module, the analog quantity input module includes a dual-port chip 402 connected to the CPLD chip 401, a DSP chip 401 connected to the dual-port RAM chip 402, and a DSP chip 401 connected to the dual-port RAM chip 402, The switching value input/output module comprises an optical coupling isolator 407 connected with the CPLD chip 401, a relay 408 connected with the optical coupling isolator 407, and an input/output interface 409 connected with the relay 408, the CPLD chip 401 is connected with a power interface 411, the address bus interface 412 is connected with the address bus 2, the analog input interface 406 is connected with the data bus 3, and the input/output interface 409 is also connected with the data bus 3.

In this embodiment, the model of the CPLD chip 401 is XC9536, when data on an analog quantity measuring card 5 or a switching quantity input card 6 needs to be obtained or a switching quantity output card 7 needs to be controlled, the CPLD chip 401 selects the latch 8 corresponding to the card through the address bus interface 412 and the address bus 2, and the card can be connected to the CPLD chip 401 through the data bus 3, wherein the switching quantity input card 6 or the switching quantity output card 7 is connected to the CPLD chip 401 through the data bus 3 and the input/output interface 409, and the analog quantity measuring card 5 is connected to the CPLD chip 401 through the data bus 3 and the analog quantity input interface 406, and at this time, the data bus of other cards cannot obtain data sent by the CPLD chip 401, after the operation is completed, the CPLD chip 401 controls the latch 8 to isolate the card from the CPLD chip 401, so that the CPLD chip 401 does not affect other cards when controlling the operation of a card, thereby well finishing the scheduling work of the whole system.

In this embodiment, the DSP chip 403 is a DSP2407 chip, the a/D converter 404 is an ADS8365 chip, each analog quantity measuring plug-in 5 acquires 8 channels of alternating voltage or current signals, the frequency is 3200Hz, the ADS8365 chip is an a/D conversion chip with a 16-bit high-speed parallel interface, after passing through the signal conditioner, the analog signal to be measured is subjected to signal conditioning to meet the requirement of a/D sampling, the a/D converter 404 performs level conversion, and then transmits the analog signal to the DSP chip 403 to perform calculation in time, so as to obtain parameters such as effective values, frequency, active power, and reactive power of the voltage/current.

Preferably, the CPLD chip 401 is further connected to a communication module, the communication module is a wireless communication module, and the wireless communication module is a wifi module or a 5G module.

As a preferred embodiment of the present invention, a watchdog chip 410 is connected to the CPLD chip 401, and the watchdog chip 410 periodically checks the internal condition of the CPLD chip 401, and sends a restart signal to the CPLD chip 401 in case of an error.

In this embodiment, both the switching value input plug-in 6 and the switching value output plug-in 7 have 16 input or output channels, and are connected with an external switch through the switching value input plug-in 6 and the switching value output plug-in 7, the switching value input plug-in 6 and the switching value output plug-in 7 must be reliable, the optical coupling isolator 407 is added in the FTU system 4 to improve the anti-interference capability of the system, and when the switching value is output, an output signal is photoelectrically isolated by the optical coupling isolator 407, then output to a relay, and finally output through the input/output interface 409.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations can be made by those skilled in the art without inventive work on the basis of the technical solution of the present invention.

Claims

1. An intelligent ring main unit based on FTU is characterized by comprising a power supply bus, an address bus, a data bus, an FTU system, an analog quantity measuring plug-in, a switching quantity input plug-in, a switching quantity output plug-in and a latch, wherein the analog quantity measuring plug-in, the switching quantity input plug-in and the switching quantity output plug-in are all connected with the power supply bus and the data bus, the analog quantity measuring plug-in, the switching quantity input plug-in and the switching quantity output plug-in are all connected with the address bus through a latch, the FTU system comprises a CPLD chip, an address bus interface connected with the CPLD chip, an analog quantity input module and a switching quantity input/output module, the analog quantity input module comprises a dual-port RAM chip connected with the CPLD chip, a DSP chip connected with the dual-port RAM chip, and an A/D converter connected with the DSP chip, The switching value input/output module comprises an optical coupling isolator connected with the CPLD chip, a relay connected with the optical coupling isolator and an input/output interface connected with the relay, the CPLD chip is connected with a power interface, the address bus interface is connected with the address bus, the analog input interface is connected with the data bus, and the input/output interface is also connected with the data bus.

2. An FTU-based intelligent ring main unit according to claim 1, wherein said CPLD chip is further connected with a communication module, said communication module is a wireless communication module, said wireless communication module is a wifi module or a 5G module.

3. An FTU-based intelligent ring main unit according to claim 1, wherein a watchdog chip is connected to said CPLD chip.