CN205663522U - Small -size living beings gas engine generator organizes digital integrated controller - Google Patents

Abstract

The utility model discloses a small -size living beings gas engine generator organizes digital integrated controller, include: main control unit and the detecting element who is connected respectively with the main control unit, speed governing functional unit, pressure regulating functional unit, the functional unit that is incorporated into the power networks, human -computer interaction unit and communication unit, the utility model discloses beneficial effect: not only have internal -combustion engine speed governing of living beings gas and synchronous generator voltage regulator function, still have generator connecting in parallel with system function, output detection function and various protect function, it is integrated with the controller integration of dispersion, simplified control system, the cost is reduced, the installation of being convenient for.

Description

Small-sized biomass gas internal combustion engine generator group digital integrated controller

Technical field

This utility model patent relates to a kind of biogas internal combustion engine generator group controller, particularly relates to one and possesses tune The biogas internal combustion engine generator group integrated controller of speed, pressure regulation, cutting-in control and complete machine control function.

Background technology

World energy sources development has gone through twice major transformation, for the first time before the industrial revolution, and the main energy sources of the mankind For fuel wood.The appearance of steam engine, has promoted the carrying out of the industrial revolution for the first time, has also promoted coal gradually to replace fuel wood.In 19 generation Recording in the second industrial revolution seventies, the appearance of internal combustion engine makes oil progressively Substitute coal.And along with oil, natural gas etc. Non-renewable energy resources increasingly exhausted, pushes to again the teeth of the storm by regenerative resources such as biogas, and energy development is in the Three Reform Periods.As the important component part of regenerative resource, biomass energy quantity is the hugest, is that the 21 century energy supplies One of energy most potential in Ying.Because it is from nature, pollution-free, simultaneously the most again reproducible utilization and cause the weight of various countries Depending on.At a few years from now on, the market value of biomass power generation will increase to the 53,000,000,000 beautiful of the year two thousand twenty from 45,000,000,000 dollars of 2010 Unit.

The biomass energy of China is the abundantest, mainly includes the vegetable remains garbage produced in agricultural production, herds fishery The animal class remnants garbage produced, the remaining garbage of agro-industrial processing generation and rural urbanization house refuse etc..But, biological Mass-energy source distribution is relatively decentralized, collects, transports and store difficulty, develops centralized Biomass Energy Utilization difficulty relatively big, therefore, little Type biogas cooling heating and power generation system becomes one of preferred plan solving China's biomass utilization problem.Small-sized biomass Air cooling cogeneration system refers generally to the installed capacity system less than 500kW, based on biogas internal combustion engine or gas turbine Want power set, and by recycling the high-temperature flue gas of power set, jacket water, provide a user with simultaneously electric energy, refrigeration and Heat supply.

Biogas internal combustion engine generator group is the nucleus equipment of the cold and hot conversion of biomass pneumoelectric, and controller is to determine its performance Critical component.Biogas internal combustion engine generator group controller mainly includes speed regulator, pressure regulator, ignition controller and complete machine Watch-dog.Currently mainly there are the following problems:

(1) control system that most biogas internal combustion engine generator groups use has multiple controller to constitute, speed regulator, Pressure regulator, ignition controller and complete machine watch-dog are separate.Speed setting controller is merely responsible for rotational speed regulation, and voltage regulator controllers is responsible for Maintaining output voltage stabilization, function and space layout are kept completely separate, level of integrated system is low, installs inconvenience.

(2) independent due to each controller, it is impossible to data exchange in time, usual each controller all possesses data acquisition, control , both there is functional redundancy problem, cannot realize again whole generating set real-time data sharing in performance element, total tune is relatively Difference.

(3) speed regulator, pressure regulator and the freestanding structure of complete machine watch-dog, limit system response time, extends and is System response time, uses integrated controller, and the Whole Response speed of control system can be made to improve 30%～50%.

(4) controller cpu performance is powerful at present, calculates speed quickly, and peripheral resource enriches.Speed governing, pressure regulation are supervised with complete machine Control uses multiple independent controllers, easily causes the wasting of resources, increases cost.

The most not yet find to be exclusively used in small-sized biomass gas internal combustion engine generator group, there is speed governing, pressure regulation, grid-connected and complete machine prison The digital integrated controller of control function.

Utility model content

This utility model is in order to solve the problems referred to above, it is proposed that a kind of small-sized biomass gas internal combustion engine generator group digital Body controller so that it is there is internal combustion engine speed governing, synchronous generator pressure regulation, generator connecting in parallel with system and complete machine control function, improve The integrated level of system, shortens system response time, simplifies system structure, reduces development cost.

For achieving the above object, this utility model employing following technical proposals:

A kind of small-sized biomass gas internal combustion engine generator group digital integrated controller, including: main control unit and with master Control unit connect respectively detector unit, speed-regulating function unit, voltage regulation function unit, grid-connected functional unit, man-machine interaction unit And communication unit；

Described main control unit includes: the data acquisition subelement, the data that are sequentially connected in series process subelement and the guarantor that reports to the police Protect subelement.

Described data acquisition subelement is connected with detector unit, and described data acquisition subelement includes A/D converter, to inspection The data that survey unit collects carry out A/D conversion.

Described data process subelement and include interconnective wave filter and single-chip microcomputer.

Described detector unit includes the voltage collecting device of biogas internal combustion engine generator group, current collecting device, electric current Harvester, oil pressure acquisition device, water temperature collection device and grid-connected busbar voltage harvester.

Described man-machine interaction unit includes: keyboard and liquid crystal display.

Described communication unit includes RS485/Modbus communication and GPRS communication, and RS485/Modbus communication refers to electric interfaces For RS485 pattern, communications protocol is Modbus agreement, and for networking and the upper monitoring of generating set, GPRS communication is note Alarm Communication, when generating set occurs abnormal, controller sends alarming short message to assigned number.

The beneficial effects of the utility model are:

1. biogas internal combustion engine generator group digital integrated controller, not only have biogas internal combustion engine speed governing and Synchronous generator voltage regulation function, also has generator connecting in parallel with system function, output detection function and various defencive function, will dispersion Controller integration, simplify control system, reduce cost, it is simple to install.

2. the speed governing of generating set, pressure regulation and grid-connected function have been unified by integrated controller, and each functional unit is coordinated Property is good, improves the dynamic property of real-time response.

3., by host computer or man-machine interaction unit, speed governing, pressure regulation, grid-connected function can be entered by user as required Row independent switch, simple to operate, it is adaptable to generating set unit and being incorporated into the power networks.

Accompanying drawing explanation

Fig. 1 is structured flowchart of the present utility model；

Wherein, 1, main control unit, 2, detector unit, 3, function button, 4, speed-regulating function unit, 5, voltage regulation function unit, 6, grid-connected functional unit, 7, liquid crystal display, 8, communication unit.

Detailed description of the invention

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

As it is shown in figure 1, biogas internal combustion engine generator group digital integrated controller, including main control unit 1, detection list Unit 2, function button 3, speed-regulating function unit 4, voltage regulation function unit 5, grid-connected functional unit 6, liquid crystal display 7, communication list Unit 8.Wherein, function button 3 and liquid crystal display have collectively constituted man-machine interaction unit.

Main control unit 1 includes that the data acquisition subelement being sequentially connected in series, data process subelement and alarm and protection Unit.

Data acquisition subelement is connected with detector unit 2, and data acquisition subelement includes A/D converter, to detector unit The data collected carry out A/D conversion.

Data process subelement and include interconnective wave filter and single-chip microcomputer.The present embodiment single-chip microcomputer is selected STM32F103ZET6 model single-chip microcomputer.

Alarm and protection subelement receives the instruction of data process subelement and sends alarm signal, and alarm signal can be acousto-optic Report to the police or in liquid crystal display 7 display alarm information.

Main control unit 1, with STM32F103ZET6 as core, completes biogas internal combustion engine generator group digital integrated control The data acquisition of device processed, data process and alarm and protection function, and liquid crystal display 6 is for the display every ginseng of generating set in real time Number, generating set allows by liquid crystal display 6 with function button unit 3 parameter such as rotating speed, voltage in running Rated value and alarm threshold value modify, meanwhile, also speed governing, pressure regulation, grid-connected functional unit can be carried out independent switch.

Detector unit 2 include the voltage of biogas internal combustion engine generator group, electric current, rotating speed, oil pressure, water temperature collection device with And grid-connected busbar voltage harvester.For to the voltage of biogas internal combustion engine generator group, electric current, rotating speed, oil pressure, water temperature with And grid-connected busbar voltage detects in real time.

Speed-regulating function unit is used for controlling two-way electronic actuators, and a road is that biogas air inlet controls electronic actuators, One tunnel is that gaseous mixture air inlet controls electronic actuators, and two-way executor's control circuit is the same, as shown in Figure 2.Speed-regulating function unit Speed regulator can be used to realize.

Regulation Control unit, after generator output end power taking, rectified filtering, is modulated by control circuit, is used for Control generator exciter stator voltage, rectifier circuit structure as it is shown on figure 3, control circuit structure as shown in Figure 4.Regulation Control Unit can use pressure regulator to realize.

Grid-connected functional unit refers mainly to the regulation by speed and pressure-regulating unit so that the frequency amplitude of generator output voltage Phase place phase sequence is identical with busbar voltage, when reaching grid-connected conditions, exports cutting-in control signal, is used for controlling external contactor and breaking Road device closes a floodgate grid-connected, and cutting-in control signal output apparatus is as shown in Figure 5.Grid-connected functional unit can use net-connected controller real Existing.

Communication unit includes RS485/Modbus communication and GPRS communication, and RS485/Modbus communication refers to that electric interfaces is RS485 pattern, communications protocol is Modbus agreement, and for networking and the upper monitoring of generating set, GPRS communication is note report Alert communication, when generating set occurs abnormal, controller sends alarming short message to assigned number.

Biogas internal combustion engine generator group is starting with in running, and main control unit 1 gathers tach signal, reality is turned Speed contrasts with rated speed, according to the deviation of actual speed Yu rated speed, carries out PID calculating, adjusts speed-regulating function list Pwm signal pulse width in unit 4, thus change electronic actuators and control voltage, make internal-combustion engine rotational speed maintain rated speed.

Voltage regulation function unit 5 rectification module carries out rectification, Filtering Processing to generator alternating current output voltage, obtains stable DC source, meanwhile, main control unit 1 gathers generator output voltage signal, is compareed with rated voltage by virtual voltage, root PID calculating is carried out, by pressure regulation functional unit 5 rectification module gained DC source is carried out PWM, it is achieved to whole according to deviation The DC/DC conversion of stream unit gained DC source, changes exciter stator voltage, makes synchronous generator output voltage maintain volume Determine voltage.

Biogas internal combustion engine generator group is after starting grid-connected function, and detector unit 2 is to grid-connected busbar voltage and electromotor Voltage carries out blood pressure lowering, changes datum mark etc. and process, for main control unit 1 complete voltage signal integer-period sampled, main control unit 1 Voltage signal after sampling conditioning also carries out signals revivification to it, resolves the actual magnitude of two voltage signals, phase place etc., when sending out When motor output voltage and grid-connected busbar voltage amplitude, frequency, phase place, phase sequence meet grid-connected conditions, cutting-in control unit 6 controls Closing a floodgate grid-connected, electromotor enters the state that is incorporated into the power networks；When generator output voltage is unsatisfactory for grid-connected conditions, pass through speed-regulating function Rotating speed, the voltage of generating set are adjusted by unit 4 and voltage regulation function unit 5, until it meets grid-connected conditions.

During being incorporated into the power networks, adjust generating set air inflow to realize generated power by speed-regulating function unit 4 Power adjustments, voltage regulation function unit 5 adjusts generator excitation voltage to realize generator reactive power regulation.

In biogas internal combustion engine generator group running, once unit occur hypervelocity, owe speed, overvoltage, cross stream, transship, The problem such as overclocking, under-frequency, main control unit 1 produces relative alarm, and shows concrete warning message by liquid crystal display 7, In stipulated time, this parameter was not recovered to normal range, and main control unit 1 i.e. controls generating set and carries out stoppage protection, it is ensured that unit And personal security, meanwhile, GPRS communication module sends note report generating set outage information to management personnel.

In biogas internal combustion engine generator group controller running, communication unit 8 is by internal combustion engine relevant parameter, electromotor Relevant parameter and grid-connected bus relevant parameter real-time Transmission are to host computer, meanwhile, receive the control from host computer Instruction, makes user can complete the control to generating set by host computer.

Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but not new to this practicality The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability Field technique personnel need not to pay various amendments or deformation that creative work can make still at protection model of the present utility model Within enclosing.

Claims (6)

1. a small-sized biomass gas internal combustion engine generator group digital integrated controller, is characterized in that, including: main control unit with And be connected respectively with main control unit detector unit, speed-regulating function unit, voltage regulation function unit, grid-connected functional unit, man-machine friendship Unit and communication unit mutually；

Described main control unit includes: the data acquisition subelement, the data that are sequentially connected in series process subelement and alarm and protection Unit.

2. a kind of small-sized biomass gas internal combustion engine generator group digital integrated controller as claimed in claim 1, its feature Being that described data acquisition subelement is connected with detector unit, described data acquisition subelement includes A/D converter, single to detection The data that unit collects carry out A/D conversion.

3. a kind of small-sized biomass gas internal combustion engine generator group digital integrated controller as claimed in claim 1, its feature It is that described data process subelement and include interconnective wave filter and single-chip microcomputer.

4. a kind of small-sized biomass gas internal combustion engine generator group digital integrated controller as claimed in claim 1, its feature It is that described detector unit includes that the voltage collecting device of biogas internal combustion engine generator group, current collecting device, current acquisition fill Put, oil pressure acquisition device, water temperature collection device and grid-connected busbar voltage harvester.

5. a kind of small-sized biomass gas internal combustion engine generator group digital integrated controller as claimed in claim 1, its feature It is that described man-machine interaction unit includes: keyboard and liquid crystal display.

6. a kind of small-sized biomass gas internal combustion engine generator group digital integrated controller as claimed in claim 1, its feature It is that described communication unit includes RS485/Modbus communication modes and GPRS communication modes.