Batteries novel maintenance monitoring intelligent device
Technical field
The utility model relates to batteries O&M monitoring technique field, is specifically related to a kind of batteries novel maintenance monitoring intelligent device.
Background technology
Grid company scale in recent years, has all obtained fast development and Unattended substation, automation at electricity sales amount or in the construction of transformer station's quantity, scale, intelligent development is very fast.And the patrolling and examining of storage batteries of transformer substation, regularly the property checked discharge and recharge with repair based on condition of component tired in reply, the often annual bad index that relevant regulations will complete that completes.
Cause the inadequate main cause of storage battery operation maintenance to have:
The existing Monitoring and Controlling technology of storage battery cannot meet the needs of remote monitoring and O&M.Although single battery voltage and batteries terminal voltage have realized on-line monitoring, be only difficult to find the accident potential such as bad operation conditions and internal resistance increase of storage battery self with the method for voltage tester.
Can not meet the needs of repair based on condition of component development to the monitoring of battery condition data.Dispatch automated system lays particular emphasis on the monitoring to operating condition of transformer station equipment, and its functional localization determines the operation of its care equipment, abnormal two states, and the monitoring of the deterioration process of equipment own is not in its envelop of function.
The intrinsic on-the-spot O&M pattern of storage battery cannot meet the needs of career development.For example, for accumulator cell charging and discharging test, discharge and recharge 5 days, one transformer station's 2 group storage batteries of test, single test 5 people with a group storage battery, complete the test that discharges and recharges of whole storage batterys, its workload is sizable.The recently more than ten years, the technical development of DC power supply, just, aspect the end equipment of station, phase control-type charging device is progressively replaced by high frequency switch power, aspect intellectual monitoring and remote control technology without any development.
The existing O&M technology of storage battery does not meet countermeasure.According to the regulation of " 18 great anti-accident measures of electrical network of State Grid Corporation of China ", original to the basis of the regularly property checked electric discharge of storage battery on, will patrol and examine every month to batteries, record the voltage data of cell, O&M workload is multiplied, and objectively requires to use some efficient automation equipments to replace manual working.
Utility model content
For the deficiency in solving the problems of the technologies described above, the purpose of this utility model is: a kind of batteries novel maintenance monitoring intelligent device is provided, changes on-the-spot O&M pattern, realize the remote monitoring of batteries, save manpower, increase work efficiency.
The utility model for the technical scheme that its technical problem of solution adopts is:
Described batteries novel maintenance monitoring intelligent device, comprise internal resistance test cell, voltage acquisition unit and temperature collecting cell, bar coupler connects two sections of buses, internal resistance collecting unit is connected with batteries by internal resistance p-wire, voltage acquisition unit is connected with batteries by voltage acquisition line, internal resistance collecting unit, voltage acquisition unit is connected with control unit CPU by serial communication circuit respectively with temperature collecting cell, batteries connects charger by charge switch, connect constant-current discharge load by discharge switch, bus fling-cut switch connection bus and charge switch, charge switch, discharge switch, bar coupler and bus fling-cut switch are respectively by switch detection circuit connection control unit CPU, ON-OFF control circuit is connected with control unit CPU, control unit CPU connects long-range PC by TCP/IP network data transmission system.
The utility model is respectively by internal resistance test cell, temperature collecting cell and the internal resistance of voltage acquisition unit Real-time Collection single battery, monomer temperature and batteries terminal voltage and monomer voltage, and by serial communication circuit by surveyed numerical value delivery value control unit CPU, control unit CPU judges whether its data that receive are in normal range (NR), once the data of noting abnormalities, send warning message by TCP/IP network data transmission system to long-range PC, report exception item, simultaneously, control unit CPU connects warning device, carries out onsite alarming.
The utility model is also provided with switch detection circuit and ON-OFF control circuit, can be to bus, mother, charging device, the switch of electric discharge device carries out remote operation, switch detection circuit detects the open and-shut mode of each switch and sends the state information detecting to control unit CPU, be sent to long-range PC by TCP/IP network data transmission system, and show by long-range PC display, when electric discharge, long-range PC is by TCP/IP network data transmission system control control unit CPU, pass through the closed discharge switch of ON-OFF control circuit by control unit CPU again, constant-current discharge load realizes the constant-current discharge of batteries, control unit CPU detects batteries dump energy in real time, after electric discharge finishes, by the closed charge switch of ON-OFF control circuit, connect charging device and start charging.
Preferably, charge monitoring device has liquid crystal display, keyboard and RS485 telecommunication circuit, be connected by RS485 with each charging module, running status and the data of charging device in monitoring charging process in real time, and control the switching on and shutting down of each charging module, all, floating charge conversion, the equal floating charge parameter of charging device is set, adjust output voltage electric current, and communicate by letter with host computer by serial ports.
Preferably, described serial communication circuit comprises photoelectric isolating circuit and RS485 level shifting circuit, photoelectric isolating circuit output and RS485 level shifting circuit input join, RS485 level shifting circuit output and control unit cpu signal input join, described photoelectric isolating circuit comprises photoelectric isolated chip and insulating power supply module, RS485 level shifting circuit comprises RS485 level transferring chip, Transistor-Transistor Logic level is converted to RS485 level by RS485 change-over circuit, and photoelectric isolating circuit can separate device internal circuit and external circuit.
Preferably, described switch detection circuit comprises current-limiting resistance, photoelectric isolating circuit, pull-up resistor row and input IO mouth extended chip, charge switch connects two photoelectric isolated chips by current-limiting resistance, the output of two photoelectric isolated chips connects respectively pull-up resistor row and input IO mouth extended chip, the IO data/address bus of input IO mouth extended chip connection control unit CPU, discharge switch, the connection mode of bar coupler and bus fling-cut switch is identical with charge switch, pull-up resistor row inhibit signal line level is consistent with control unit CPU, signal input expanding chip is input to switch state signal the IO data/address bus of control unit CPU, realize on off state collection.
Preferably, described ON-OFF control circuit comprises latch cicuit chip, darlington array chip and relay, latch cicuit chip input is connected with the IO data/address bus of control unit CPU, latch cicuit chip output is connected with darlington array chip input, darlington array output is connected with relay, relay connects respective switch, latch cicuit chip is connected with the IO data/address bus of control unit CPU, in the time controlling certain actuating of relay, corresponding output IO puts 1, relay adhesive, zero setting relay disconnects, thereby control, external switch disconnects or closure.
Preferably, described temperature collecting cell adopts temperature sensor, and temperature sensor is crimped on single battery surface, Real-time Collection single battery surface temperature information, and be sent to control unit CPU.
Preferably, on the p-wire of described internal resistance collecting unit, voltage acquisition unit and temperature collecting cell, be respectively equipped with resettable fuse, to avoid short circuit, burn module, ensure system safety operation.
Preferably, control unit CPU adopts STC90C58AD single-chip microcomputer, system is reliable and stable, formant circuit is isolated mutually, strong interference immunity, the related software programming part of Detection & Controling function that realizes above-mentioned control unit CPU is prior art, belong to general knowledge as well known to those skilled in the art, transfer of data between PC that control unit CPU realizes by TCP/IP network data transmission system and long-range, wherein related software programming part also belongs to prior art, and in use procedure, nothing is improved.
Compared with prior art, the utlity model has following beneficial effect:
The utility model has changed on-the-spot O&M pattern, realize the remote monitoring of batteries, save manpower, increase work efficiency, internal resistance test cell, temperature collecting cell and the internal resistance of voltage acquisition unit Real-time Collection single battery, monomer temperature and batteries terminal voltage and monomer voltage, internal resistance collecting unit, on the sampled signal line of voltage acquisition unit and temperature collecting cell, be respectively equipped with resettable fuse, to avoid short circuit, burn module, ensure system safety operation, realize the Long-distance Control of switch in system by switch detection circuit and ON-OFF control circuit, realizing batteries fills, the automatic switchover of discharge process, ensure the normal operation of batteries.
Brief description of the drawings
Fig. 1 the utility model structured flowchart.
Fig. 2 serial communication circuit schematic diagram.
Fig. 3 switch detection circuit schematic diagram.
Fig. 4 ON-OFF control circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1, described batteries novel maintenance monitoring intelligent device, comprise internal resistance test cell, voltage acquisition unit and temperature collecting cell, comprise internal resistance test cell, voltage acquisition unit and temperature collecting cell, bar coupler connects two sections of buses, internal resistance collecting unit is connected with batteries by internal resistance p-wire, voltage acquisition unit is connected with batteries by voltage acquisition line, internal resistance collecting unit, voltage acquisition unit is connected with control unit CPU by serial communication circuit respectively with temperature collecting cell, batteries connects charger by charge switch, connect constant-current discharge load by discharge switch, bus fling-cut switch connection bus and charge switch, charge switch, discharge switch, bar coupler and bus fling-cut switch are respectively by switch detection circuit connection control unit CPU, ON-OFF control circuit is connected with control unit CPU, control unit CPU connects long-range PC by TCP/IP network data transmission system.
As shown in Figure 2, described serial communication circuit comprises photoelectric isolating circuit and RS485 level shifting circuit, photoelectric isolating circuit output and RS485 level shifting circuit input join, RS485 level shifting circuit output and control unit cpu signal input join, described photoelectric isolating circuit comprises photoelectric isolated chip and insulating power supply module, RS485 level shifting circuit comprises RS485 level transferring chip U1, Transistor-Transistor Logic level is converted to RS485 level by RS485 change-over circuit, U2-U4 is photoelectric isolated chip, respectively with voltage acquisition unit, internal resistance test cell is connected with temperature collecting cell, U2, U3, U4 and insulating power supply module U5 form photoelectric isolating circuit, device internal circuit and external circuit are separated, R1-R6 is pull-up resistor, holding wire level and control unit CPU are consistent, R7, R8 is current-limiting resistance, with TVS pipe V1, V2 forms the protective circuit of U1 jointly, resistance R 9 is build-out resistor, ensure the impedance matching of RS485 communication line.
As shown in Figure 3, switch detection circuit comprises multiple subelements, subelement number is identical with switch total amount in system, each subelement comprises current-limiting resistance R9-R16, photoelectric isolating circuit, pull-up resistor row RP1 and input IO mouth extended chip U8, taking charge switch as example, charge switch J1 connects two photoelectric isolated chip U6 by current-limiting resistance, U7, the output of two photoelectric isolated chips connects respectively pull-up resistor row RP1 and input IO mouth extended chip U8, the IO data/address bus of input IO mouth extended chip U8 connection control unit CPU, discharge switch, bar coupler, the connection mode of bus fling-cut switch is identical with charge switch, pull-up resistor row RP1 inhibit signal line level is consistent with control unit CPU, signal input expanding chip is input to switch state signal the IO data/address bus of control unit CPU, realize on off state collection.
As shown in Figure 4, ON-OFF control circuit comprises latch cicuit chip D1, darlington array chip D2 and relay, the number of relay is identical with switch total amount in system, latch cicuit chip D1 input is connected with the IO data/address bus of control unit CPU, latch cicuit chip D1 output is connected with darlington array chip D2 input, darlington array chip D2 output is connected with relay, relay connects respective switch, latch cicuit chip is connected with the IO data/address bus of control unit CPU, in the time controlling certain actuating of relay, corresponding output IO puts 1, relay adhesive, zero setting relay disconnects, thereby control, external switch disconnects or closure.
Wherein, control unit CPU connects charge monitoring device, charge monitoring device has liquid crystal display, keyboard and RS485 telecommunication circuit, be connected by RS485 with each charging module, monitor in real time running status and the data of charging device in charging process, and control the switching on and shutting down of each charging module, all, floating charge conversions, the equal floating charge parameter of charging device is set, adjusts output voltage electric current, and communicate by letter with host computer by serial ports; Temperature collecting cell adopts temperature sensor, and temperature sensor is crimped on single battery surface, Real-time Collection single battery surface temperature information, and be sent to control unit CPU; On the p-wire of internal resistance collecting unit, voltage acquisition unit and temperature collecting cell, be respectively equipped with resettable fuse, to avoid short circuit, burn module, ensure system safety operation.
The utility model gathers single battery internal resistance, monomer temperature and batteries terminal voltage and monomer voltage by internal resistance test cell, temperature collecting cell and voltage acquisition unit respectively, and by serial communication circuit by surveyed numerical value delivery value control unit CPU, control unit CPU judges whether its data that receive are in normal range (NR), once the data of noting abnormalities, send warning message by TCP/IP network data transmission system to long-range PC, report exception item, simultaneously, control unit CPU connects warning device, carries out onsite alarming.
The utility model is also provided with switch detection circuit and ON-OFF control circuit, can be to bus, mother, charging device, the switch of electric discharge device carries out remote operation, switch detection circuit detects the open and-shut mode of each switch and sends the state information detecting to control unit CPU, be sent to long-range PC by TCP/IP network data transmission system, and show by long-range PC display, when electric discharge, long-range PC is by TCP/IP network data transmission system control control unit CPU, pass through the closed discharge switch of ON-OFF control circuit by control unit CPU again, constant-current discharge load realizes the constant-current discharge of batteries, control unit CPU detects batteries dump energy in real time, after electric discharge finishes, by the closed charge switch of ON-OFF control circuit, connect charging device and start charging.
Control unit CPU adopts STC90C58AD single-chip microcomputer, system is reliable and stable, formant circuit is isolated mutually, strong interference immunity, the related software programming part of Detection & Controling function that realizes above-mentioned control unit CPU is prior art, belongs to general knowledge as well known to those skilled in the art, the transfer of data between PC that control unit CPU realizes by TCP/IP network data transmission system and long-range, wherein related software programming part also belongs to prior art, and in use procedure, nothing is improved.