CN204103580U - With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface - Google Patents

With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface Download PDF

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Publication number
CN204103580U
CN204103580U CN201420529145.6U CN201420529145U CN204103580U CN 204103580 U CN204103580 U CN 204103580U CN 201420529145 U CN201420529145 U CN 201420529145U CN 204103580 U CN204103580 U CN 204103580U
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circuit
power supply
cpu
over
input
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CN201420529145.6U
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林泽峰
李水珠
郭谋发
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FUJIAN YIHUAYUAN ENERGY MANAGEMENT Co Ltd
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FUJIAN YIHUAYUAN ENERGY MANAGEMENT Co Ltd
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Abstract

With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface, comprise batteries, power supply input Acquisition Circuit, cpu interface circuit, non-isolated output circuit, isolation power supply DC/DC; Power supply input Acquisition Circuit comprises the power supply connected successively and inputs over-voltage over-current protection circuit, battery isolation sample circuit, AD Acquisition Circuit; Batteries is connected to power supply input over-voltage over-current protection circuit; Power supply input over-voltage over-current protection circuit connects non-isolated output circuit; Cpu interface circuit comprises reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit, CPU; AD Acquisition Circuit is connected to CPU; CPU and non-isolated output circuit are connected respectively to isolation power supply DC/DC.The utility model realizes carrying out continual power supply supply to automation DC equipment and carrying out Real-Time Monitoring to lead acid accumulator real time execution parameter and running status.

Description

With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface
[technical field]
The utility model relates to a kind of Automation of Hydropower Station system instrument, be specifically related to a kind of Automation of Hydropower Station system multi-channel DC power supply apparatus with communication interface, for stand-by power supply 12V-48V lead-acid batteries monitoring in medium-small hydropower plants Automated condtrol, centrally connected power source supply is carried out to direct current automation equipment simultaneously.
[background technology]
In medium-small hydropower plants automatic improving, many automatic control equipments all need to provide DC power supply.Normal way is the supply power voltage by AC adapter, alternating voltage being directly changed into this equipment, but, when alternating voltage disappears, cannot power to equipment.And some automation equipment such as watch-dog and direct current unit switching on and shutting down mechanism all require that continual power supply supplies.The way of general automation power configuration adopts UPS back-up source, but the capacity of the UPS of general back-up source is all smaller, and power-on time is shorter on the one hand, big current supply when also cannot provide the action of DC switch machine mechanism on the other hand.The UPS that employing capacity is larger or direct current system scheme cost higher, general medium waterpower generator station cannot provide.So introduced jumbo lead-acid batteries, as the simple straight system backup power supply that equipment is powered.Because lead acid accumulator exists memory effect, if do not monitored the operational factor of storage battery and state, if overcharging or crossing the situation of putting appears in storage battery, batteries useful life will be shortened, batteries permanent damages may be caused in severe cases, so the monitoring of battery is very important to the reliability improving back-up source.
[summary of the invention]
Technical problem to be solved in the utility model is to provide a kind of Automation of Hydropower Station system multi-channel DC power supply apparatus with communication interface, realizes carrying out continual power supply supply to automation DC equipment and carrying out Real-Time Monitoring to lead acid accumulator real time execution parameter and running status.
The utility model is achieved in that
With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface, comprise batteries, power supply input Acquisition Circuit, cpu interface circuit, non-isolated output circuit, isolation power supply DC/DC;
Described power supply input Acquisition Circuit comprises power supply input over-voltage over-current protection circuit, battery isolation sample circuit, AD Acquisition Circuit; Described power supply input over-voltage over-current protection circuit connects described battery isolation sample circuit, described battery isolation sample circuit connects described AD Acquisition Circuit;
Described batteries is connected to described power supply input over-voltage over-current protection circuit; Described power supply input over-voltage over-current protection circuit connects described non-isolated output circuit;
Described cpu interface circuit comprises reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit, CPU; Described CPU connects described reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit respectively;
Described AD Acquisition Circuit is connected to described CPU; Described CPU and described non-isolated output circuit are connected respectively to described isolation power supply DC/DC.
Further, described non-isolated output circuit comprises five road non-isolation DC/DC power supplys, described five tunnel non-isolated export DC/DC power supply and comprise two-way controllable output DC/DC power supply, DC/DC power supply is exported with three roads are fixing, this five roads power supply is a Parallel opertation circuit, the whole ground connection of five road power supply negative terminals.
The utility model has the advantage of: 1, the utility model can carry out Real-Time Monitoring to the operational factor of battery and running status, is that storage battery heavy current impact Voltage Drop or battery damage provide foundation for judging; 2, when monitoring outside charging device and going wrong, outside charging device can be disconnected in time by input and output circuit, avoid charging further to produce damage to battery pack, improve useful life and the reliability of battery; 3, to monitor cell voltage too low, heavy load device can be disconnected in time by input and output circuit or drop into charging device in time and avoid battery to cross putting, produce damage to battery, improve useful life and the reliability of battery; 4, by real-time monitoring battery electricity service condition and battery status, in unit all shutdown situations, automation can control directly to enter power saving working method, and only supply needs no-break power unit power supply; Excise 220V station service transformer simultaneously, only when battery drops to needs charging, just drop into station service and battery is charged, reach fabulous energy-saving effect; 5, provide multi-group power to export, the multiple automation equipment of centering small plant focuses on a device and carries out centrally connected power supply, power converting circuit simplicity of design, improve whole automated system reliability, facilitate system maintenance simultaneously; 6, between PLC display unit and host computer Monitored System of Industrial Storage Cell, adopt radio communication and optical fiber communication two kinds of communication modes to communicate, two kinds of communication modes are for subsequent use each other simultaneously, improve the reliability of whole system communication.
[accompanying drawing explanation]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is hardware structure diagram of the present utility model.
Fig. 2 and the utility model communicate the hardware block diagram of the PLC display unit be connected.
Fig. 3 is the utility model and PLC display unit and upper software sharing communication system architecture figure.
[embodiment]
As shown in Figure 1, be the Automation of Hydropower Station system multi-channel DC power supply apparatus hardware structure diagram being with communication interface.With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface, comprise batteries, power supply input Acquisition Circuit, cpu interface circuit, non-isolated output circuit, isolation power supply DC/DC;
Described power supply input Acquisition Circuit comprises power supply input over-voltage over-current protection circuit, battery isolation sample circuit, AD Acquisition Circuit; Described power supply input over-voltage over-current protection circuit connects described battery isolation sample circuit, described battery isolation sample circuit connects described AD Acquisition Circuit.
Described batteries is connected to described power supply input over-voltage over-current protection circuit; Described power supply input over-voltage over-current protection circuit connects described non-isolated output circuit.
Described cpu interface circuit comprises reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit, CPU; Described CPU connects described reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit respectively.The external PLC display unit of described RS485 interface circuit.
Described AD Acquisition Circuit is connected to described CPU; Described CPU and described non-isolated output circuit are connected respectively to described isolation power supply DC/DC.
Described non-isolated output circuit comprises five road non-isolation DC/DC power supplys, described five tunnel non-isolated export DC/DC power supply and comprise two-way controllable output DC/DC power supply, export DC/DC power supply with three roads are fixing, this five roads power supply is a Parallel opertation circuit, the whole ground connection of five road power supply negative terminals.
The cell voltage of outside input inputs over-voltage over-current protection circuit by power supply, and after carrying out isolation and linear transformation by battery isolation sample circuit, be input to AD Acquisition Circuit and carry out AD data acquisition, AD Acquisition Circuit is connected with CPU; Described power supply input over-voltage over-current protection circuit mainly play to back-end circuit as described in five tunnel non-isolated export DC/DC power supplys and as described in isolation power supply DC/DC play lightning protection, overvoltage and short-circuit protection; Battery isolation sample circuit, adopts linear optical coupling to isolate the voltage that battery inputs, and to reduce because external disturbance is on CPU and the impact of cpu i/f module, improves the reliability of equipment; In actual battery monitoring, power for differentiation cell damage and big current and cause cell voltage fluctuation state, need CPU process software to add filtering wave by prolonging time and battery power amount calculation algorithm, accumulator monitoring and multi-group power device can set corresponding filtering parameter when dispatching from the factory, and also carry out Remote configuration by host computer.
Described isolation power supply DC/DC, mainly inputs Acquisition Circuit with cpu interface circuit and voltage and is connected; The power power supply of light-coupled isolation one end of described cpu interface circuit, voltage input Acquisition Circuit is all connected on described isolation power supply DC/DC; Described non-isolation DC/DC exports fixing 5V power supply output provides described isolation supply power voltage DC/DC supply voltage to input.
Refer to the PLC display unit described in Fig. 2, mainly comprise supply power voltage, RS485 interface, liquid crystal touch screen, communicated with optical-fibre channel by wireless communication module with host computer batteries monitoring system.
Please read Fig. 3, the utility model and described PLC display unit and upper software sharing communication system architecture, comprise a plurality of PLC display unit, a plurality of accumulator monitoring and multi-group power device and host computer accumulator monitoring management system; Described accumulator monitoring and multi-group power device, be connected with described PLC display unit by RS485 interface circuit, described PLC display unit is connected with host computer Monitored System of Industrial Storage Cell and is connected to two passages, a passage is that radio communication mold block mode connects, and also has a passage to be by carrying out data cube computation with optical fiber solutions behind Ethernet, fibre-optic terminus; In single power station, only have single described accumulator monitoring and multi-group power device and single described PLC display unit; The batteries monitoring of whole hydroelectric station and multi-power system add that single described host computer hydroelectric station batteries monitoring system is formed by N number of power station; Described accumulator monitoring and multi-group power device, after monitoring battery parameter and battery operation state, described PLC display unit is sent to by RS485 interface circuit, described PLC display unit is in described touch screen display battery operation parameter and running status, data packing is sent to host computer Monitored System of Industrial Storage Cell by wireless communication module and optical-fibre channel simultaneously, carried out storage and the process of corresponding data by host computer.
Operation principle of the present utility model is:
Cell voltage is first after over-voltage over-current protection module, isolated by linear optical coupling and produce linear ratio-voltage output, CPU carries out data acquisition by AD, after calculating, obtaining battery voltage values, judging that the too low or too high relay of battery tension is the need of outputing by the parameter of setting; By a series of filtering and calculating battery electric quantity algorithm, obtain the state of charge of present battery, judge present battery running status and running error message, comprise charger charging damage, cell damage; On LED indicating circuit, export current battery charge information simultaneously, and error message instruction, output into action situation.
Battery input voltage, after over-voltage over-current protection circuit, the operating voltage power supply that Parallel opertation five groups of DC/DC are different; Wherein three groups of power supplys are that fixed voltage exports, and other two groups is that controllable voltage exports; In automation, the supply object of the working power on each road, refers to Fig. 2.
PLC, by RS485 bus timing inquiry battery parameter and battery status, in the relevant operational factor of touch LCD screen display and state, feeds back to host computer by wireless communication module and optical-fiber communication channel after the data of inquiry being packed simultaneously.
After host computer receives relevant battery parameter and state, carry out the storage of data, statistics and analysis, in real time back-up source is monitored.
In sum, with the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface, advantage is that described accumulator monitoring and multi-group power device are completely independently flush bonding modules, and the battery pack that can be realized under multiple occasion by software design patterns is monitored and automation equipment power supply centrally connected power supply; Accumulator monitoring and multi-group power device, PLC display unit and host computer, data communication all adopts general " Modbus agreement " communication protocol, practical.
The Automation of Hydropower Station system multi-channel DC power supply apparatus of the utility model band communication interface, as a ring important in medium-small hydropower plants automation, have and provide DC supply to outside DC equipment, the operational factor of Real-Time Monitoring lead-acid batteries and running status, exportable automatic input and cut-out exchange functions such as battery chargings; Stand-by power supply, when compressor emergency shutdown and civil power outer net cannot provide power supply, can realize the Auto Power On of unit; So will improve the stability of the automatic operating in medium-small hydropower plants, the reliability that back-up source and equipment are powered is very important.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present utility model.

Claims (2)

1. be with the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface, it is characterized in that: comprise batteries, power supply input Acquisition Circuit, cpu interface circuit, non-isolated output circuit, isolation power supply DC/DC;
Described power supply input Acquisition Circuit comprises power supply input over-voltage over-current protection circuit, battery isolation sample circuit, AD Acquisition Circuit; Described power supply input over-voltage over-current protection circuit connects described battery isolation sample circuit, described battery isolation sample circuit connects described AD Acquisition Circuit;
Described batteries is connected to described power supply input over-voltage over-current protection circuit; Described power supply input over-voltage over-current protection circuit connects described non-isolated output circuit;
Described cpu interface circuit comprises reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit, CPU; Described CPU connects described reset chip, input and output circuit, LED indicating circuit, RS485 interface circuit respectively;
Described AD Acquisition Circuit is connected to described CPU; Described CPU and described non-isolated output circuit are connected respectively to described isolation power supply DC/DC.
2. the Automation of Hydropower Station system multi-channel DC power supply apparatus of band communication interface as claimed in claim 1, it is characterized in that: described non-isolated output circuit comprises five road non-isolation DC/DC power supplys, described five tunnel non-isolated export DC/DC power supply and comprise two-way controllable output DC/DC power supply, DC/DC power supply is exported with three roads are fixing, this five roads power supply is a Parallel opertation circuit, the whole ground connection of five road power supply negative terminals.
CN201420529145.6U 2014-09-15 2014-09-15 With the Automation of Hydropower Station system multi-channel DC power supply apparatus of communication interface Active CN204103580U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104898068A (en) * 2015-06-26 2015-09-09 北方联创通信有限公司 Portable multifunctional storage battery detection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104898068A (en) * 2015-06-26 2015-09-09 北方联创通信有限公司 Portable multifunctional storage battery detection system
CN104898068B (en) * 2015-06-26 2017-09-15 北方联创通信有限公司 Portable multi-function ice storing time system and its control method

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