CN201726108U - Digital protection measuring and control device - Google Patents

Abstract

The utility model relates to a digital protection measuring and control device which mainly solves the technical problem that because of the data exchange of two CPU processors, the anti-interference capability of a system is not strong enough. The measuring and control device comprises a power module, an AC sampling module, a CPU module, an in and out module or an operation module; the CPU module comprises a CPU integrated module, an out driving module, an in light separation driving module, a communication module, an analog/digital conversion module, a storage control module, a liquid crystal display module and a low-pass filter module; data acquired by the AC sampling module passes through a low-pass filter and then is input into the analog/digital conversion module, is input into the CPU integrated module after A/D conversion, is processed and then is transmitted to the in and out module or the operation module through the out driving module so as to complete the opto-electrical isolation of switching quantity and relay outlet control; and the in and out module or the operation module further transmits the data to the CPU integrated module through the in light separation driving module, and is linked with the communication module, the liquid crystal display module and the storage control module in two ways. The digital protection measuring and control device is applicable to the protection, control, measurement and monitoring of power grids with 110kv and below voltage grades.

Description

The digital protecting measure and control device

Technical field: the utility model relates to a kind of microcomputer protective relay device, by state, the parameter testing of power system device, the digital protecting measure and control device that is used for the power system device protection, measures, controls.

Background technology: the develop rapidly of electric power system constantly proposes new requirement to relaying protection, and the develop rapidly of electronic technology, computer technology and the communication technology has constantly been injected new vitality for the development of Protection Technology again.Electric power system to the requirement of microcomputer protective relay except the basic function of protection; the long-term storage space that also should have big capacity fault message and data; the fast data processing capacity; powerful communication capacity; with other protection, control device and scheduling networking ability, advanced language programming etc. with shared total system data, information and Internet resources.Traditional Microcomputer Protection uses 51 and 96 series monolithics mostly; this single-chip microcomputer can meet the demands substantially for its performance of protection of routine; but owing to be subjected to the restriction of himself hardware configuration and speed; this single-chip microcomputer is difficult to realize the complicated algorithm that upgrades and reaches higher sampling rate; and traditional Microcomputer Protection; peripheral chip is many, and bus can not be integrated in cpu chip inside, causes the stability of protection and antijamming capability to be subjected to great restriction.Also have other class protection to adopt dual-cpu structure; a kind of " microcomputer protecting controller " disclosed as Chinese patent 200420082683.1; by the power supply module; the AC sampling module; the CPU module; open into leaving module or operation module composition; CPU is the DSP chip Microchip dsPic TMS320C32-40 of U.S. Microchip company; CPU has two cards; be dsp board and V40 plate; and because two CPU processors are arranged; exist two CPU processor datas to exchange problem; make that the antijamming capability of system is strong inadequately, and the interrupt service routine that is difficult to develop than rational hardware trigger comes emergency is responded.

The utility model content: the purpose of this utility model provides a kind of high performance digital protecting measure and control device, mainly solves two CPU processor datas and exchanges problem, and makes the strong inadequately technical problem of antijamming capability of system.The utility model possesses computerization, networking, intellectuality, the incorporate characteristics of protection, control, measurement and data communication.

The technical solution of the utility model is: the digital protecting measure and control device; by the power supply module; the AC sampling module; the CPU module; open into leaving module or operation module composition; CPU module and power supply module; the AC sampling module is unidirectional connection; the CPU module with open that module is two-way connects into leaving module or operation; the CPU module is by the CPU integration module; leave the driving module; open light inlet every driving module; the communication module; mould/number conversion module; the storage control module; the liquid crystal display module; the low-pass filtering module is formed; the data that the AC sampling module collects are imported mould/number conversion module through after the low-pass filtering; through A/D conversion back input CPU integration module; handling the back through the CPU integration module drives module and is transferred to and opens into leaving module or operating module by leaving; finishing the photoelectricity of switching value isolates and the relay control of export; open into leaving module or operation module data are transferred to the CPU integration module, CPU integration module and communication module by opening light inlet again every driving module; the liquid crystal display module; the two-way connection of storage control module.

The CPU integration module is DSP (digital signal processor) the chip Microchip dsPic 30f6014 of Microchip Technology (Microchip), be installed on the CPU module, this chip has very high operating frequency and computational speed, very big addressing space, abundant command system and more input/output port.The register of CPU integration module, data/address bus, address bus all are 32, have memory management functions, memory protection function and Task Switching function, and high-speed cache (Cache) and floating number parts all are integrated in the CPU integration module.

The beneficial effects of the utility model are: finish nearly all data manipulation with a slice CPU integration module inside; realized that really bus does not go out chip; the reliability and the antijamming capability of Microcomputer Protection have been improved greatly; because Microchip dsPic peripheral chip is fewer; so the board area that whole hardware designs takies is less; price is also lower, and the algorithm programming also realizes easily.Microchip dsPic supports the transfer of data of SPI pattern and I2C pattern simultaneously, is convenient to chip capacity and expands.These characteristics make the utility model needing be well suited for the occasion of high-resolution, high sampling rate and supercomputing.The utility model and prior art are relatively; peripheral chip still less, the design simpler; and the problem that does not have two exchanges data between the CPU processor; data manipulation can be finished in sheet; support Dual-Ethernet, optical fiber, multiple communication modes such as RS485, CAN, possess computerization, networking; intellectuality, the incorporate characteristics of protection, control, measurement and data communication.

Description of drawings:

Accompanying drawing is the utility model system configuration schematic diagram

Among the figure: the 1-CPU module, 1-1-CPU integration module, 1-2-are left the driving module, and 1-3-opens light inlet every driving module, 1-4-communication module, 1-5-mould/number conversion module, 1-6-stores control module, 1-7-liquid crystal display module, 1-8-low-pass filtering module, 2-power supply module, 3-AC sampling module, 4-are opened into leaving module or operation module.

Embodiment: digital protecting measure and control device (SNP-3000); by power supply module 2 (adopting XRA15/110D05-24HG type 2 road power supplys of the safe Electron Technology Co., Ltd of home brands Beijing Xing Yuanfeng); AC sampling module 3 (the TR1139-2B type current transformer and the TR1139-2C type voltage transformer that adopt Hubei Tianrui Electronic Co., Ltd. to produce); CPU integration module 1; open into leaving module or the operation module 4 (DK1a-24V of Panasonic relay; flood is the JHX-2F anti-trip relay all) form; CPU module 1 and power supply module 2; AC sampling module 3 is unidirectional connection; CPU module 1 with open into leave module or the operation 4 two-way connections of module; CPU module 1 is by CPU integration module 1-1 (the DSP chip dsPic 30f6014 of Microchip Technology); leave and drive module 1-2 (the TLP181 cake core that adopts Toshiba Corp to produce); open light inlet every driving module 1-3 (the TLP181 cake core that adopts Toshiba Corp to produce); communication module 1-4 (the KSZ8842 Fast Ethernet communication chip that adopts U.S. Micrel company to produce); mould/number conversion module 1-5 (the AD7656 chip that adopts U.S. ADI company to produce); storage control module 1-6 (the IC622LV51216 chip that adopts Taiwan ICSI company to produce); liquid crystal display module 1-7 (adopting the Shenzhen to open up the LM320240C liquid crystal that general little scientific and technological development Co., Ltd produces); low-pass filtering module 1-8 (adopting the EMI/EMC low pass filter that the space person of outstanding talent produces in Beijing) forms; the data that AC sampling module 3 collects are imported mould/number conversion module 1-5 through after the low-pass filtering; through A/D conversion back input CPU integration module 1-1; handling the back through the CPU integration module drives module 1-2 and is transferred to and opens into leaving module or operating module 4 by leaving; finishing the photoelectricity of switching value isolates and the relay control of export; open into leaving module or operation module 4 data are transferred to CPU integration module 1-1 by opening light inlet again every driving module 1-3; CPU integration module 1-1 and communication module 1-4; liquid crystal display module 1-7; the two-way connection of storage control module 1-6; the various working powers of power supply module 2 generators; 85V to 265V imports; behind the anti-interference filtration loop; utilize inversion principle output+5V; + 24V; wherein+and 5V provides power supply for chip operation, and+24V is for opening into leaving module or the operation module provides power supply.

Claims (1)

1. digital protecting measure and control device; by the power supply module; the AC sampling module; the CPU module; open into leaving module or operation module composition; CPU module and power supply module; the AC sampling module is unidirectional connection; the CPU module with open that module is two-way connects into leaving module or operation; it is characterized in that: the CPU module is by the CPU integration module; leave the driving module; open light inlet every driving module; the communication module; mould/number conversion module; the storage control module; the liquid crystal display module; the low-pass filtering module is formed; the data that the AC sampling module collects are imported mould/number conversion module through after the low-pass filtering; through A/D conversion back input CPU integration module; handling the back through the CPU integration module drives module and is transferred to and opens into leaving module or operating module by leaving; finishing the photoelectricity of switching value isolates and the relay control of export; open into leaving module or operation module data are transferred to the CPU integration module by opening light inlet again every driving module; CPU integration module and communication module; the liquid crystal display module; the two-way connection of storage control module, described CPU integration module is for being the DSP chip dsPic 30f6014 of Microchip Technology.