CN105071432B - Diesel-driven generator parallel control device - Google Patents
Diesel-driven generator parallel control device Download PDFInfo
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- CN105071432B CN105071432B CN201510461567.3A CN201510461567A CN105071432B CN 105071432 B CN105071432 B CN 105071432B CN 201510461567 A CN201510461567 A CN 201510461567A CN 105071432 B CN105071432 B CN 105071432B
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Abstract
The present invention relates to controller for diesel-driven generator, specially diesel-driven generator parallel control device.Existing diesel generator controller is solved to gather using a controller and control the defect and problem produced by the collecting and distributing control mode of multiple diesel-driven generators.Present invention employs the control mode between every controller individually one diesel-driven generator, each controller of control being bus structures.Increase field bus communication module, a phase detecting module on existing controller hardware foundation.On software; failure rearrangement method is used during unit starting; according to power distribution algorithm mean allocation power during power distribution; it is divided into unit load during shutdown to shut down and incoming call shutdown two ways; need to confirm that the controller is in normal operating conditions during breaker between folding diesel-driven generator and diesel-driven generator bus, the breaker between power network and load is using an independent performing module.Great convenience is provided for system increase-volume or volume reduction.
Description
Technical field
The present invention relates to controller for diesel-driven generator, specially diesel-driven generator parallel control device.
Background technology
With steadily improving for national economy, increasing department proposes higher requirement to power supply continuity.It is existing
Some diesel generator controllers can typically meet unit or two-shipper control requires that two-shipper system above needs design specialized
Controller, collecting and distributing control mode is used control system more（One controller controls many diesel-driven generators）, its use state figure
As shown in Figure 1（By taking three machines as an example）, its cut-away view is as shown in Figure 2.Existing controller includes processor, the input of processor
It is connected with for gathering power network busbar voltage（VA、VB、VC）, electric current（IA、IB、IC）, frequency power network measurement module, with each bavin
The corresponding voltage for being used to gather each diesel-driven generator of fry dried food ingredients motor（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil
Warm tk, oil pressure pk, rotating speed nkDiesel-driven generator measurement module, for gathering power network bus and each diesel-driven generator phase difference
Phase detecting module；Processor has ASR corresponding with each diesel-driven generator（Diesel-driven generator speed regulator）Speed governing output end, AVR
（Diesel-driven generator pressure regulator）Pressure regulation output end（Unit controller is free of ASR speed governing output end and AVR pressure regulation output ends）, simultaneously
It is connected with including power network bus breaker, diesel generating set bus breaker corresponding with each diesel-driven generator（Abbreviation unit
Bus breaker）Performing module, the contact portion of power network bus breaker is between power network bus and load, each unit bus
The contact of breaker is connected between correspondence diesel-driven generator and unit bus；It is total that processor is also associated with upper machine communication
Line, to realize remote measurement.
The controller is arranged on by diesel-driven generator, by internal measurement device monitoring diesel-driven generator and electric network state,
And action or guarded command are sent according to the state of power network and diesel-driven generator, control start and stop and the breaker of diesel-driven generator
Folding.Its specific control flow is：When line voltage is less than setting value, diesel-driven generator starts；After starting successfully, diesel oil hair
Group of motors simultaneously to load power by machine, and mean allocation power (one-of-a-kind system is directly powered, it is not necessary to mean allocation power)；Power network
After restoring electricity, diesel generating set first stops powering to load to be recovered power network and powers to the load again.Diesel-driven generator and power network
State is in real time in control screen display.If once there is inverse probability, oil temperature, oil pressure, rotating speed, voltage, electric current in diesel-driven generator
Too high or too low situations such as, controller sends guarded command to diesel-driven generator immediately, diesel-driven generator is completed corresponding protect
Shield is acted.
Because existing diesel generator controller is collecting and distributing control mode, it constitutes a closing with each diesel-driven generator
System, not with the interface of other controller communications, does not change the interface of internal processes, and the information that the system is obtained can not be passed
Other controllers are passed, can only be interactive with host computer.When whole system extends capacity, the hardware configuration of controller can not be to new
Increased unit is controlled, it is necessary to re-replace the more controllers of interface；When system reduces capacity, original multimachine control
Device program processed has been cured, it is impossible to change, and can only change diesel generator controller.Every time during increase and decrease diesel-driven generator number of units,
System main electrical scheme must also change.Otherwise, original main electrical scheme will not adapt to new system.
Cluster sampling mode is used during diesel generator controller sampled data, is gathered and is controlled multiple by a controller
Diesel-driven generator.When system is multi-computer system, controller sampled data is more, and control signal is sent frequently.Diesel-driven generator
Data can not sample simultaneously, cause delay, and causing to be delayed to system status monitoring increases.
The content of the invention
The present invention is solved existing diesel generator controller and is gathered using a controller and control multiple diesel-driven generators
Collecting and distributing control mode produced by defect and problem there is provided a kind of diesel-driven generator parallel control device.The control device is
Every diesel-driven generator is equipped with a controller, and every controller individually controls a diesel-driven generator.
The present invention adopts the following technical scheme that realization：Diesel-driven generator parallel control device, including multiple controllers,
Every controller individually controls a diesel-driven generator；Also include one the performing module pb containing power network bus breaker, its
The contact portion of interior power network bus breaker is between power network bus and load；The controller includes processor, processor
Input be connected with for gathering power network busbar voltage（VA、VB、VC）, electric current（IA、IB、IC）, frequency power network measurement module,
The voltage of control diesel-driven generator for gathering（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil temperature tk, oil pressure pk、
Rotating speed nkMeasurement module, the first phase detection module for gathering power network bus and institute's control diesel-driven generator phase difference, use
The second phase detection module of the synchronizing signal phase difference exported in collection institute's control diesel-driven generator with processor；Processor is
ASR speed governing output end, the AVR pressure regulation output ends of diesel-driven generator are controlled, while being connected with including unit bus breaker and exporting
The performing module of the performing module pb signals containing power network bus breaker is controlled, the contact portion of unit bus breaker is in institute
Control between diesel-driven generator and unit bus；Processor is also associated with field bus communication module and upper machine communication bus mould
Block；Multiple controllers are connected in local communication bus by respective field bus communication module, pass through respective host computer
Communication bus module is connected on upper communication bus.
Control software needed for the processor of controller realized by following control method, described control method bag
Include following steps：
1）Software determines controller numbering a, different controllers, by changing a value during loading procedure, it is determined that often when loading
The numbering of individual controller, so that it is determined that the primary condition of controller；
2）On establish the beginning by cable；
3）Director demon carries out Initialize installation；
4）Power network normal power supply, controller collection power network busbar voltage（VA、VB、VC）, electric current（IA、IB、IC）, frequency and
The voltage of institute's control diesel-driven generator（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil temperature tk, oil pressure pk, rotating speed nk；Electricity
Net voltage is rated value, and institute's control diesel-driven generator do not start, and its voltage, electric current, frequency, tachometer value are zero, oil temperature, oil pressure be
Certain initial value；The original state signal is sent to local communication bus（Including foregoing controller numbering a）, sent etc. waiting
Receive the original state signal of other controllers transmission；
5）Judge whether power network busbar voltage is less than the 70% of rated voltage；If it is not, then thinking that system is in initial shape
State；If it is, assert grid cut-off, the minimum controller of numbering sends control to the performing module pb containing power network bus breaker
Signal processed, disconnects power network bus breaker, realizes the connection disconnected between power network and load；Controller is to local communication bus
Power cut signal is sent, and receives the power cut signal that other controllers are sent；
6）Before grid cut-off, the load power P that controller is calculatedLoad, number of units should be started by calculating diesel-driven generator
n: , Pτ, iFor the unit rated power of diesel-driven generator, n round numbers；Ensuring to be fully able to dynamic load
In the case of, keep the surplus of at least one machine to be in stand-by state；
7）It should start whether number of units is more than present unit not bad number of units（According to the original state letter in local communication bus
Number, bad diesel-driven generator does not send original state signal）, if it is, re-starting number of units calculating；If not, control
Whether device numbering a, which is less than or equal to, should start number of units n, if it is, start the diesel-driven generator that the controller is controlled, if
It is no, then do not start, so as to realize according to ascending order is numbered, start diesel-driven generator；Controller is logical to scene simultaneously
News bus sends starting state signal, and receives the starting state signal that other controllers in local communication bus are sent；
8）Whether diesel-driven generator starts and succeeds（Judge from its voltage, electric current, rotating speed gathered back etc.）If, not into
Work(, and the number of starts is less than three times, then return to step 7, if having restarted three times, it is stopped immediately, and to local communication
Bus sends fault-signal, and the next diesel-driven generator that at the same time should start in number of units maximum numbering starts, and to scene
The operating controller numbering that communication bus sends after the machine starting state signal, simultaneous faults machine subtracts 1 automatically, it is ensured that transport
Row machine group # is arranged in order as ascending；
9）All diesel-driven generators having been turned on are adjusted to rated no-load state (by calculating voltage and given value difference
Value, rotating speed and no-load speed difference, send signal to the ASR speed governing output end of processor, AVR pressure regulation output end, are adjusted to volume
Determine Light Condition), while the controller that minimum is numbered in operation sends synchronizing signal instruction to local communication bus, make in operation
The processor of all controllers sends the square wave that a frequency is 50Hz, believes as the synchronization needed for second phase detection module
Number, and the startup for starting pass signal while other controllers are sent in reception local communication bus is sent to local communication bus
Pass signal；
10）By controller gather return institute's control diesel-driven generator voltage, electric current and rotating speed with give it is unloaded specified
Value is compared, and judges whether institute's control diesel-driven generator reaches rated no-load state, if not, repeat step 9）, if it is, waiting
Treat and machine；
11）If the voltage of operating diesel-driven generator, frequency and meeting condition for parallel connection with synchronizing signal phase difference, to
Its performing module sends instruction, makes the unit bus breaker points close in it, realizes and car, and is sent out to local communication bus
Go out and car pass signal is while receive other controllers in local communication bus are sent and car pass signal, otherwise（Do not have
Send and car pass signal）, it is stopped immediately, and fault-signal is sent to local communication bus, it is at the same time operating
The maximum next diesel-driven generator numbered starts and simultaneously car, and send machine startup and simultaneously car letter to local communication bus
Number；And after the unsuccessful unit of car operating controller numbering subtract 1 automatically, it is ensured that operating unit numbering press it is ascending according to
Secondary arrangement；
12）Generating set independence run with load, gathers operating diesel-driven generator voltage and current value and draws its work(
Rate, what the active power ratio that the operating separate unit diesel-driven generator of calculating undertakes undertook with all operating diesel-driven generators
The difference sP of total active power ratio,, n is that diesel-driven generator should start number of units（Bavin in parallel running
Fry dried food ingredients motor number of units）；I is the mark of any in the diesel-driven generator in all parallel runnings；PiFor operating separate unit
The active power that diesel-driven generator undertakes；Pτ, iFor the rated active power of separate unit generator；Institute's control diesel-driven generator of processor
ASR speed governing output end signal meet, wherein R is the speed in percentage count rate of descent of diesel-driven generator, according to bavin
The rotating speed of fry dried food ingredients motor-active curve characteristic is drawn：, power adjustment is completed, is made in operation
Diesel-driven generator active power of output it is identical；Free band information carrying number is sent to local communication bus simultaneously, and receives scene
The free band information carrying number that other controllers are sent on communication bus；
13）If loadReduce, meet condition：, shutdown is sent to local communication bus
Signal, while receiving the stopping signal that other controllers are sent in local communication bus；
14）The ASR speed governing output end output speed-regulating signal of the largest number of controller, makes the controller control bavin in operation
The power output of fry dried food ingredients motor is zero, then sending signal to its performing module disconnects the contact of its unit bus breaker；Weight
Multiple step 12）, power mean allocation again；
15）When power network bus restores electricity, stopping signal is sent to local communication bus, while receiving local communication bus
The stopping signal that other upper controllers are sent；Corresponding letter is sent by the ASR speed governing output end of processor, AVR pressure regulation output ends
Number, make the voltage of all operating diesel-driven generators, frequency consistent with power network bus, in unit bus phase and power network bus
When phase is consistent, i.e., during the corresponding signal that first phase detection module phase difference output is zero, the control of minimum is numbered in operation
Device processed sends control signal to the performing module pb containing power network bus breaker, makes the closing of contact of power network bus breaker,
Realize anti-grid-connected；Anti- grid-connected signal is sent to local communication bus, is sent while receiving other controllers in local communication bus
Anti- grid-connected signal；
16）The ASR speed governing output ends of processor send speed-regulating signal, and the power output for making operating diesel-driven generator is
Zero, then sending signal to its performing module disconnects the contact of its unit bus breaker, and send bavin to local communication bus
Fry dried food ingredients motor off-the-line status signal, receives the off-the-line status signal that other controllers are sent in local communication bus；
17）Off-the-line is completed, and unit recovers to original state.
The present invention increases a field bus communication module on existing controller hardware foundation, increases a phase-detection
Module.On software, failure rearrangement method is used during unit starting, according to power distribution algorithm mean allocation work(during power distribution
Rate, is divided into that unit load is shut down and incoming call shuts down two ways during shutdown, folding diesel-driven generator and diesel-driven generator bus it
Between breaker when need to confirm that the controller is in normal operating conditions, breaker between power network and load using one solely
Vertical performing module.Control device of the present invention is obtained by the improvement of software and hardware.
Diesel-driven generator parallel control device of the present invention employs every controller individually one diesel oil hair of control
It is the control mode of bus structures between motor, each controller.When whole system extends capacity or reduces capacity, its hardware configuration
It is basically unchanged, need to only increases and decreases amount controller in bus, increase and decrease diesel-driven generator quantity on unit bus；Control software is only
Simple adjustment need to be done（The adjustment of the initial set values such as mainly controller numbering a, diesel-driven generator nominal parameter）.The present invention
Be particularly suitable for use in the grid-connected of many diesel-driven generators（Connection）Control, is that system increase-volume or volume reduction provide great convenience, and keep away
Exempt to waste.
Brief description of the drawings
Fig. 1 is the use state figure of existing diesel generator controller；
Fig. 2 is the internal structure schematic diagram of existing diesel generator controller；
Fig. 3 is the structure principle chart of diesel-driven generator parallel control device of the present invention；
Fig. 4 is the internal structure schematic diagram of diesel-driven generator parallel control device controller of the present invention.
Embodiment
Diesel-driven generator parallel control device, including multiple controllers, every controller individually control a diesel generation
Machine；Also include one the performing module pb containing power network bus breaker, the contact portion of the power network bus breaker in it in
Between power network bus and load；The controller includes processor, and the input of processor is connected with for gathering power network bus electricity
Pressure（VA、VB、VC）, electric current（IA、IB、IC）, frequency power network measurement module, the voltage of control diesel-driven generator for gathering
（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil temperature tk, oil pressure pk, rotating speed nkMeasurement module, for gathering power network
The first phase detection module of bus and institute's control diesel-driven generator phase difference, for gathering, control diesel-driven generator and processor are defeated
The second phase detection module of the synchronizing signal phase difference gone out；Processor controlled diesel-driven generator ASR speed governing output end,
AVR pressure regulation output ends, while being connected with the execution for containing power network bus breaker including unit bus breaker and output control
The performing module of module pb signals, the contact db of unit bus breakerkBe connected to controlled diesel-driven generator and unit bus it
Between；Processor is also associated with field bus communication module and upper machine communication bus module；Multiple controllers pass through respective existing
Field bus communication module is connected in local communication bus, and upper communication is connected to by respective upper machine communication bus module
In bus.
Control software needed for the processor of controller realized by following control method, described control method bag
Include following steps：
1）Software determines controller numbering a, different controllers, by changing a value during loading procedure, it is determined that often when loading
The numbering of individual controller, so that it is determined that the primary condition of controller；
2）On establish the beginning by cable；
3）Director demon carries out Initialize installation；
4）Power network normal power supply, controller collection power network busbar voltage（VA、VB、VC）, electric current（IA、IB、IC）, frequency and
The voltage of institute's control diesel-driven generator（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil temperature tk, oil pressure pk, rotating speed nk；Electricity
Net voltage is rated value, and institute's control diesel-driven generator does not start, and its voltage, electric current, frequency, tachometer value are zero, and oil temperature, oil pressure are one
Determine initial value；The original state signal is sent to local communication bus（Including foregoing controller numbering a）, and receive other controls
The original state signal that device is sent；
5）Judge whether power network busbar voltage is less than the 70% of rated voltage；If it is not, then thinking that system is in initial shape
State；If it is, assert grid cut-off, the minimum controller of numbering sends control to the performing module pb containing power network bus breaker
Signal processed, disconnects power network bus breaker（Controller does not start, state during holding last time end of run）, realize and disconnect electricity
Connection between net and load；Controller sends power cut signal to local communication bus, and stopping of receiving that other controllers send
Electric signal；
6）Before grid cut-off, the load power P that controller is calculatedLoad, number of units should be started by calculating diesel-driven generator
n: , Pτ, iFor the unit rated power of diesel-driven generator, n round numbers；Ensuring to be fully able to dynamic load
In the case of, keep the surplus of at least one machine to be in stand-by state；
7）It should start whether number of units is more than present unit not bad number of units（According to the original state letter in local communication bus
Number, bad diesel-driven generator does not send original state signal）, if it is, re-starting number of units calculating；If not, control
Whether device numbering a, which is less than or equal to, should start number of units n, if it is, start the diesel-driven generator that the controller is controlled, if
It is no, then do not start, so as to realize according to ascending order is numbered, start diesel-driven generator；Controller is logical to scene simultaneously
News bus sends starting state signal, and receives the starting state signal that other controllers in local communication bus are sent；
8）Whether diesel-driven generator starts and succeeds（Judge from its voltage, electric current, rotating speed gathered back etc.）If, not into
Work(, and the number of starts is less than three times, then return to step 7, if having restarted three times, it is stopped immediately, and to local communication
Bus sends fault-signal, and the next diesel-driven generator that at the same time should start in number of units maximum numbering starts, and to scene
The operating controller numbering that communication bus sends after the machine starting state signal, simultaneous faults machine subtracts 1 automatically, it is ensured that transport
Row machine group # is arranged in order as ascending；
9）All diesel-driven generators having been turned on are adjusted to rated no-load state (by calculating voltage and given value difference
Value, rotating speed and no-load speed difference, send signal to the ASR speed governing output end of processor, AVR pressure regulation output end, are adjusted to volume
Determine Light Condition), while the controller that minimum is numbered in operation sends synchronizing signal instruction to local communication bus, make in operation
The processor of all controllers sends the square wave that a frequency is 50Hz, believes as the synchronization needed for second phase detection module
Number, and the startup for starting pass signal while other controllers are sent in reception local communication bus is sent to local communication bus
Pass signal；
10）By controller gather return institute's control diesel-driven generator voltage, electric current and rotating speed with give it is unloaded specified
Value is compared, and judges whether institute's control diesel-driven generator reaches rated no-load state, if not, repeat step 9）, if it is, waiting
Treat and machine；
11）If the voltage of operating diesel-driven generator, frequency and meeting condition for parallel connection with synchronizing signal phase difference, to
Its performing module sends instruction, makes the unit bus breaker points close in it, realizes and car, and is sent out to local communication bus
Go out and car pass signal is while receive other controllers in local communication bus are sent and car pass signal, otherwise（Do not have
Send and car pass signal）, it is stopped immediately, and fault-signal is sent to local communication bus, it is at the same time operating
The maximum next diesel-driven generator numbered starts and simultaneously car, and send machine startup and simultaneously car letter to local communication bus
Number；And after the unsuccessful unit of car operating controller numbering subtract 1 automatically, it is ensured that operating unit numbering press it is ascending according to
Secondary arrangement；
12）Generating set independence run with load, gathers operating diesel-driven generator voltage and current value and draws its work(
Rate, what the active power ratio that the operating separate unit diesel-driven generator of calculating undertakes undertook with all operating diesel-driven generators
The difference sP of total active power ratio,, n is that diesel-driven generator should start number of units（Bavin in parallel running
Fry dried food ingredients motor number of units）；I is the mark of any in the diesel-driven generator in all parallel runnings；PiFor operating separate unit
The active power that diesel-driven generator undertakes；Pτ, iFor the rated active power of separate unit generator；Institute's control diesel-driven generator of processor
ASR speed governing output end signal meet, wherein R is the speed in percentage count rate of descent of diesel-driven generator, according to bavin
The rotating speed of fry dried food ingredients motor-active curve characteristic is drawn：, power adjustment is completed, is made in operation
Diesel-driven generator active power of output it is identical；Free band information carrying number is sent to local communication bus simultaneously, and receives scene
The free band information carrying number that other controllers are sent on communication bus；
13）If loadReduce, meet condition：, shutdown is sent to local communication bus
Signal, while receiving the stopping signal that other controllers are sent in local communication bus；
14）The ASR speed governing output end output speed-regulating signal of the largest number of controller, makes the controller control bavin in operation
The power output of fry dried food ingredients motor is zero, then sending signal to its performing module disconnects the contact of its unit bus breaker；Weight
Multiple step 12）, power mean allocation again；
15）When power network bus restores electricity, stopping signal is sent to local communication bus, while receiving local communication bus
The stopping signal that other upper controllers are sent；Corresponding letter is sent by the ASR speed governing output end of processor, AVR pressure regulation output ends
Number, make the voltage of all operating diesel-driven generators, frequency consistent with power network bus, in unit bus phase and power network bus
When phase is consistent, i.e., during the corresponding signal that first phase detection module phase difference output is zero, the control of minimum is numbered in operation
Device processed sends control signal to the performing module pb containing power network bus breaker, makes the closing of contact of power network bus breaker,
Realize anti-grid-connected；Anti- grid-connected signal is sent to local communication bus, is sent while receiving other controllers in local communication bus
Anti- grid-connected signal；
16）The ASR speed governing output ends of processor send speed-regulating signal, and the power output for making operating diesel-driven generator is
Zero, then sending signal to its performing module disconnects the contact of its unit bus breaker, and send bavin to local communication bus
Fry dried food ingredients motor off-the-line status signal, receives the off-the-line status signal that other controllers are sent in local communication bus；
17）Off-the-line is completed, and unit recovers to original state.
Claims (1)
1. a kind of diesel-driven generator parallel control device, it is characterised in that including multiple controllers, every controller is individually controlled
One diesel-driven generator；Also include one the performing module containing power network bus breaker（pb）, the power network bus open circuit in it
The contact portion of device is between power network bus and load；The controller includes processor, and the input of processor, which is connected with, to be used for
Gather power network busbar voltage（VA、VB、VC）, electric current（IA、IB、IC）, frequency power network measurement module, for gather control diesel oil
The voltage of generator（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil temperature（tk）, oil pressure（pk）, rotating speed（nk）Survey
Module is measured, the first phase detection module for gathering power network bus and institute's control diesel-driven generator phase difference is controlled for gathering
The second phase detection module for the synchronizing signal phase difference that diesel-driven generator is exported with processor；Processor has controlled diesel generation
Speed regulator ASR speed governing output end, the pressure regulator AVR pressure regulation output ends of machine, while being connected with including unit bus breaker and defeated
Go out performing module of the control containing power network bus breaker（pb）The performing module of signal, the contact of unit bus breaker
（dbk）It is connected between controlled diesel-driven generator and unit bus；Processor is also associated with field bus communication module and upper
Machine communication bus module；Multiple controllers are connected in local communication bus by respective field bus communication module, are passed through
Respective upper machine communication bus module is connected on upper communication bus；
Control software needed for the processor of controller realizes that described control method is included such as by following control method
Lower step：
1）Software determines controller numbering a, different controllers, by changing a value during loading procedure, it is determined that each control when loading
The numbering of device processed, so that it is determined that the primary condition of controller；
2）On establish the beginning by cable；
3）Director demon carries out Initialize installation；
4）Power network normal power supply, controller collection power network busbar voltage（VA、VB、VC）, electric current（IA、IB、IC）, frequency and controlled
The voltage of diesel-driven generator（DkA、DkB、DkC）, electric current（IkA、IkB、IkC）, frequency, oil temperature（tk）, oil pressure（pk）, rotating speed（nk）；
Power network busbar voltage is rated value, and institute's control diesel-driven generator does not start, and its voltage, electric current, frequency, tachometer value are zero, oil temperature, oil
Press as certain initial value；Original state signal is sent to local communication bus, and receives the original state letter of other controllers transmission
Number；
5）Judge whether power network busbar voltage is less than the 70% of rated voltage；If it is not, then thinking that system is in original state；Such as
Fruit is to assert grid cut-off, numbers minimum controller to the performing module containing power network bus breaker（pb）Send control
Signal, disconnects power network bus breaker, realizes the connection disconnected between power network and load；Controller is sent out to local communication bus
Power cut signal is sent, and receives the power cut signal that other controllers are sent；
6）Before grid cut-off, the load power P that controller is calculatedLoad, number of units n should be started by calculating diesel-driven generator:, Pτ, iFor the unit rated power of diesel-driven generator, n round numbers；
7）It should start whether number of units is more than present unit not bad number of units, if it is, re-starting number of units calculating；If not, control
Whether device numbering a processed, which is less than or equal to, should start number of units n, if it is, start the diesel-driven generator that the controller is controlled, if
It is no, then do not start, ascending order is numbered according to controller so as to realize, start diesel-driven generator；Simultaneously controller to
Local communication bus sends starting state signal, and receives the starting state letter that other controllers are sent in local communication bus
Number；
8）Whether diesel-driven generator starts and succeeds, if do not succeed, and the number of starts is less than three times, then return to step 7）,
If having restarted three times, it is stopped immediately, and fault-signal is sent to local communication bus, at the same time should starts in number of units
Next diesel-driven generator of maximum numbering starts, and sends the machine starting state signal, simultaneous faults to local communication bus
Operating controller numbering after machine subtracts 1 automatically, it is ensured that the controller numbering of operating unit is arranged in order as ascending；
9）All diesel-driven generators having been turned on are adjusted to rated no-load state, at the same operation in number minimum controller to
Local communication bus sends synchronizing signal instruction, the processor of all controllers in operation is sent the side that a frequency is 50Hz
Ripple, startup pass signal is sent while connecing as the synchronizing signal needed for second phase detection module, and to local communication bus
Receive the startup pass signal that other controllers are sent in local communication bus；
10）Institute's control diesel-driven generator voltage, electric current and the rotating speed returned are gathered by controller with given unloaded rated value to enter
Row compares, and judges whether institute's control diesel-driven generator reaches rated no-load state, if not, repeat step 9）, if it is, waiting simultaneously
Car；
11）If the voltage of operating diesel-driven generator, frequency and meeting condition for parallel connection with synchronizing signal phase difference, held to it
Row module sends instruction, makes the unit bus breaker points close in it, realizes and car, and sent simultaneously to local communication bus
Car pass signal receives other controllers in local communication bus are sent and car pass signal simultaneously, otherwise, stops work immediately
Make, and fault-signal is sent to local communication bus, next diesel-driven generator of at the same time operating maximum numbering is opened
Dynamic and simultaneously car, and machine startup and simultaneously car signal are sent to local communication bus；And in the operation after the unsuccessful unit of car
Controller numbering subtract 1 automatically, it is ensured that operating unit number be arranged in order by ascending；
12）Generating set independence run with load, gathers operating diesel-driven generator voltage and current value and draws its power, count
Calculate the active power ratio that operating separate unit diesel-driven generator undertakes always has with what all operating diesel-driven generators undertook
The difference sP of work(power proportions,, n is that diesel-driven generator should start number of units；I is the bavin in all parallel runnings
The mark of any in fry dried food ingredients motor；PiThe active power undertaken for operating separate unit diesel-driven generator；Pτ, iSent out for separate unit
The rated active power of motor；The speed regulator ASR speed governing output end signal of institute's control diesel-driven generator of processor is met, wherein R is the speed in percentage count rate of descent of diesel-driven generator, according to the rotating speed of diesel-driven generator-active song
Line characteristic is drawn：, power adjustment is completed, makes the output wattful power of operating diesel-driven generator
Rate is identical；Free band information carrying number is sent to local communication bus simultaneously, and receives other controllers in local communication bus and is sent
Free band information carrying number；
13）If loadReduce, meet condition：, shutdown letter is sent to local communication bus
Number, while receiving the stopping signal that other controllers are sent in local communication bus；
14）The diesel-driven generator speed regulator ASR speed governing output end output speed-regulating signal of the largest number of controller, makes this in operation
The power output that controller controls diesel-driven generator is zero, then sends signal to its performing module and make its unit bus breaker
Contact disconnects；Repeat step 12）, power mean allocation again；
15）When power network bus restores electricity, stopping signal is sent to local communication bus, at the same receive local communication bus on its
The stopping signal that his controller is sent；Adjusted by the diesel-driven generator speed regulator ASR speed governing output end of processor, diesel-driven generator
Depressor AVR pressure regulation output ends send corresponding signal, make voltage, frequency and the power network bus one of all operating diesel-driven generators
Cause, when unit bus phase is consistent with power network bus phase, i.e., first phase detection module phase difference output be zero it is corresponding
During signal, minimum controller is numbered from operation to the performing module containing power network bus breaker（pb）Send control letter
Number, make the closing of contact of power network bus breaker, realize anti-grid-connected；Anti- grid-connected signal is sent to local communication bus, is connect simultaneously
Receive the anti-grid-connected signal that other controllers are sent in local communication bus；
16）The diesel-driven generator speed regulator ASR speed governing output ends of processor send speed-regulating signal, make operating diesel-driven generator
Power output be zero, then sending signal to its performing module disconnects the contact of its unit bus breaker, and logical to scene
News bus sends diesel-driven generator off-the-line status signal, receives the off-the-line state letter that other controllers are sent in local communication bus
Number；
17）Off-the-line is completed, and unit recovers to original state.
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| CN105858349B (en) * | 2016-05-17 | 2019-03-15 | 广东溢达纺织有限公司 | Bobbin-winding machine spindle position efficiency measuring equipment and method |
| CN105978028B (en) * | 2016-06-23 | 2018-12-25 | 太原理工大学 | Diesel-driven generator parallel control system |
| CN106849160B (en) * | 2017-01-24 | 2019-05-14 | 华南理工大学 | A kind of suitable diesel-driven generator group independently coordinates grid-connected control method |
| CN106992543B (en) * | 2017-04-27 | 2019-04-12 | 太原理工大学 | The independent micro-capacitance sensor that diesel-driven generator and battery group are constituted |
| CN107453478A (en) * | 2017-07-10 | 2017-12-08 | 广东电网有限责任公司佛山供电局 | A kind of generator self-starting determination methods and device |
| CN109339947A (en) * | 2018-10-17 | 2019-02-15 | 沈阳航天新光集团有限公司 | Vehicle-mounted two-way emergency generator |
| CN110011353B (en) * | 2019-03-19 | 2022-12-27 | 上海唐银投资发展有限公司 | Parallel operation control system and method for diesel generator power supply and distribution system |
| CN109921468B (en) * | 2019-04-12 | 2023-08-18 | 福建广通机电科技有限公司 | Parallel operation control method for small single-phase generator set |
| CN110112771B (en) * | 2019-04-16 | 2023-04-18 | 中广核研究院有限公司 | Method and device for detecting running state of generator by excitation device of generator in nuclear power plant |
| CN110649653B (en) * | 2019-09-23 | 2023-12-22 | 宝鸡石油机械有限责任公司 | Automatic start-stop and grid-connected system of generator set |
| CN111404207A (en) * | 2020-03-24 | 2020-07-10 | 国电联合动力技术有限公司 | Power distribution network access control method and control system for generator set |
| CN111509837A (en) * | 2020-04-28 | 2020-08-07 | 合肥康尔信电力系统有限公司 | Diesel generating set parallel output double-bus main-standby power supply control technology |
| CN111509786B (en) * | 2020-04-29 | 2021-08-17 | 合肥康尔信电力系统有限公司 | Parallel operation and parallel operation control system of diesel generating set |
| CN112290587B (en) * | 2020-10-12 | 2022-08-12 | 辽宁红沿河核电有限公司 | Operation control method and speed regulation controller of diesel generator set |
| CN112803482A (en) * | 2021-02-25 | 2021-05-14 | 中国五环工程有限公司 | Automatic start-stop and load control system and control method for diesel generating set |
| CN113866636B (en) * | 2021-12-03 | 2022-03-11 | 深圳市聚能优电科技有限公司 | Parallel operation testing method for diesel storage equipment |
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| CN202454136U (en) * | 2011-12-23 | 2012-09-26 | 中国人民解放军第二炮兵工程学院 | Simulation experiment device for parallel diesel power-generating system |
| KR101997535B1 (en) * | 2012-09-24 | 2019-07-08 | 한국전력공사 | Mamless-type islanded microgrid system and control method thereof |
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