CN203180631U - Switching value monitoring device - Google Patents

Abstract

The utility model discloses a switching value monitoring device including a signal source, a signal processor, a single-chip microprocessor, an address setting, a working indication lamp, a photoelectric isolator, an RS485 communication unit, a voltage-reducing silicon chain control output terminal and a relay fault output terminal. The switching value monitoring device is characterized in that the signal source includes 32 channels of switching value input and 8 channels of other status input. The 8 channels of other status input includes two groups of battery switching statuses, two groups of external device statuses, two groups of battery fuse statuses and two groups of insulation detection statuses. The voltage-reducing silicon chain control output terminal can realize the automatic adjustment of control bus voltage. The switching value monitoring device provided by the utility model mainly realizes detection of statuses of a DC power source switching-on switch, a control switch, an external device, a battery switch fuse and the like, selects different fault relay output for solving specific faults according to practical conditions of a user, realizes the automatic adjustment of voltage-reducing silicon chain, and has characteristics that the switching value monitoring device is low power consumption, high in computing power, high in performance, low in cost and is energy-saving and environment-friendly.

Description

The switching value supervising device

Technical field

The utility model relates to the supervising device of DC power system in a kind of electric power system, relates in particular to the switching value supervising device of a kind of state-detection to DC power system closing bus bar switch and control bus-tie circuit breaker and the control of step-down silicon chain and alarm output.

Background technology

Direct current system is to be applied to waterpower, thermal power plant; all kinds of transformer stations and other use the user of DC equipment, provide the power-supply device of DC power supply for giving signalling arrangement, protection, automatics, emergency lighting, emergency power supply and circuit breaker branch, closing operation.Along with the develop rapidly of national economy, the scale of direct current system is also increasing, and structure becomes increasingly complex.In whole direct current production application process, because human factor or the Nature such-and-such fault can take place and abnormal state of affairs occurs, thereby produce serious consequence.Therefore these potential faults to existing in the power system operation will actively be taked some enthusiasm precautionary measures.

The switching value supervising device is a kind of equipment of the online detection of switch amount and alarm dry contact output in the DC power system.Breaking down such as which circuit breaker in whole system, the switching value supervising device will send alarm signal after tripping operation or which the road fuse blows, and to demonstrate by supervisory control system be the tripping operation of breaking down of which circuit breaker, or which road fuse blows.Current switching value monitoring is only simply done detection to the state of combined floodgate switch, control switch, and the amount detection to combined floodgate switch and control switch is laid down hard and fast rule, wasted the utilization rate that detects interface greatly, and can only detect a certain section combined floodgate switch and control switch, detect when can not carry out two sections switches.Needed relay alarm output contact is very few when switch breaks down, and can not well satisfy user's demand.Construction along with intelligent grid, the performance of switch amount monitoring has proposed requirements at the higher level, such as according to the more reasonable amount detection that distributes combined floodgate switch and control switch more freely of actual operating position needs, measuring ability when possessing two sections switches, more relay alarm output, and can freely dispose and define, employing intelligent switches such as adding step-down silicon chain control function carry out switch control, have very big meaning.

Summary of the invention

A kind of switching value supervising device described in the utility model, comprise: signal source, signal is handled, single-chip microcomputer, the address arranges, relay indicating light, photoisolator, the RS485 communication, step-down silicon chain control output end, the output of relay fault, wherein signal source and signal are received on the single-chip microcomputer after handling series connection, photoisolator is connected with single-chip microcomputer with RS485 communication series connection back, the address arranges, relay indicating light, step-down silicon chain control output end, the output of relay fault is connected respectively on the single-chip microcomputer, its characteristics are: signal source comprises the input of 30 two-way switch amounts and eight road other state inputs, eight road other state inputs comprise two Battery pack on off states, two groups of external equipment states, two Battery pack fuse states, two groups of insulation detected states, step-down silicon chain control output end has two groups, two groups of Pyatyis or seven grades of step-down silicon chains can be controlled automatically according to the controlling voltage value that the user sets in this loop, realize the automatic adjusting of controlling voltage, the output of relay fault has seven the tunnel, can select different power transfer relay output according to actual disposition, can external indicator light, outside indicating equipment such as buzzer, fault is calculated in the switching value monitoring automatically, but the adhesive of relay fault output control relay is made alarm condition thereby control outside indicating equipment when breaking down.The address arranges by arranging according to using needs flexible expansion toggle switch, and relay indicating light is used for judging normal/abnormal condition when work.

The utility model is mainly finished status detection such as DC power combined floodgate switch, control switch, external equipment, cell switch fuse, the concrete fault that occurs such as combined floodgate switch fault, control switch fault, external equipment fault, cell switch fuse fault etc. are selected different power transfer relay output according to user's actual disposition, and realize the automatic adjusting etc. of step-down silicon chain.The power supply of each functional circuit is selected multichannel output high frequency switch power for use, and input voltage range is wide, can realize that 110V system, 220V system share, and low in energy consumption, energy-conserving and environment-protective.Single-chip microcomputer is ATmega32, performance was up to 16 MIPS when it worked in 16 MHz, the In-System Programmable Flash of 32K byte, the EEPROM of 1024 bytes, the internal SRAM of 2K byte, 8 tunnel 10 ADC, programmable watchdog timer with individual sheets internal oscillator, 6 kinds of sleep patterns, computing capability is strong, the performance height, cost is low.

Description of drawings

Accompanying drawing 1 is the structure principle chart of this supervising device

Embodiment

Below in conjunction with description of drawings the utility model is further elaborated.

A kind of switching value supervising device described in the utility model, comprise: signal source 1, signal handle 2, single-chip microcomputer 3, address arrange 4, relay indicating light 5, photoisolator 6, RS485 communication 7, step-down silicon chain control output end 8, relay fault output 9, wherein signal source 1 and signal are received on the single-chip microcomputer 3 after handling 2 series connection, photoisolator 6 and RS485 communication 7 series connection backs are connected with single-chip microcomputer 3, and the address arranges 4, relay indicating light 5, step-down silicon chain control output end 8, relay fault are exported 9 and be connected respectively on the single-chip microcomputer 3.During concrete work, the signal of signal source 1 is after signal handles 2, directly deliver on the I/O interface of single-chip microcomputer 3, the state that single-chip microcomputer 3 is judged each road combined floodgate switch and control switch automatically according to combined floodgate number of switches and the control switch quantity of user's actual disposition is selected different power transfer relay output 9 to the concrete fault that occurs such as combined floodgate switch fault, control switch fault, external equipment fault, cell switch fuse fault etc. according to user's actual disposition.Automatically carry out the control of step-down silicon chain output 8 according to the controlling voltage value of user's setting.Single-chip microcomputer 3 can detect two sections combined floodgate switches and control switch state simultaneously, and by through the RS485 of photoisolator 6 communication 7 combined floodgate on off state, control switch state, fault message being uploaded DC power and always monitored, and receive the pre-set parameter of the total monitoring of DC power.

Claims (1)

1. switching value supervising device, comprise: signal source (1), signal is handled (2), single-chip microcomputer (3), the address arranges (4), relay indicating light (5), photoisolator (6), RS485 communication (7), step-down silicon chain control output end (8), relay fault output (9), wherein signal source (1) and signal are received on the single-chip microcomputer (3) after handling (2) series connection, photoisolator (6) is connected with single-chip microcomputer (3) with RS485 communication (7) series connection back, the address arranges (4), relay indicating light (5), step-down silicon chain control output end (8), relay fault output (9) is connected respectively on the single-chip microcomputer (3), its characteristics are: signal source (1) comprises the input of 30 two-way switch amounts and eight road other state inputs, eight road other state inputs comprise two Battery pack on off states, two groups of external equipment states, two Battery pack fuse states, two groups of insulation detected states, step-down silicon chain control output end (8) has two groups, and relay fault output (9) has seven the tunnel.

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