CN104806364B - Biogas Generator Set load kinetic-control system and method - Google Patents
Biogas Generator Set load kinetic-control system and method Download PDFInfo
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- CN104806364B CN104806364B CN201510100797.7A CN201510100797A CN104806364B CN 104806364 B CN104806364 B CN 104806364B CN 201510100797 A CN201510100797 A CN 201510100797A CN 104806364 B CN104806364 B CN 104806364B
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Abstract
Biogas Generator Set load kinetic-control system, it includes control unit and biogas pressure sampling unit；The biogas pressure sampling unit is used to gather the biogas pressure in air container in real time, and biogas pressure electric signal P corresponding to generation；The control unit calculates according to the biogas pressure electric signal P in preset time period and obtains biogas pressure rate of change K；The control unit is according to the biogas pressure electric signal and the present load power of the biogas pressure rate of change K dynamic regulation Biogas Generator Sets.The present invention can integrate the load output power of the payload dynamic regulation generating set with reference to methane quantity, methane quantity variation tendency and generating set, and the frequent starting and all standing for avoiding generating set open suddenly.The invention further relates to correlation technique.
Description
Technical field s
The present invention relates to a kind of Biogas Generator Set load kinetic-control system and method.
Background technology
Marsh gas power generation is widely used in sewage treatment industry, refuse landfill, CMM Power Generation, large-scale plant that raises, day
The fields such as right gas distributed energy.
At present, marsh gas power generation spatial load forecasting is mainly divided to two classes：One is generated electricity according to the power demand of user terminal to adjust
The load output quantity of machine, this kind of control mode are not influenceed by source of the gas, and gas quantity need to stablize and abundance, is mainly used in distribution
Energy field.Another kind of is to determine that the load of generator exports according to gas quantity, and this kind of control feature is gas supply
It is limited, and can occur larger fluctuation in different periods, gas flow, mainly be used in anerobic sowage marsh gas power generation, rubbish
The fields such as landfill gas generating, CMM Power Generation.
For latter class load control mode, the spatial load forecasting generally use jet dynamic control inlet end of marsh gas power generation
Admission pressure the advantage is that jet dynamic control can quickly be made instead according to the change of admission pressure as control signal
Should, i.e. load adjustment speed is fast, and the response time is short, but such system can not prejudge to the variation tendency of gas, can not
Generator load is reasonably planned in certain period of time, sewage biogas is the product of sewage treatment anaerobic section, and it is produced
Amount is influenceed by factors such as sewage water, anaerobic techniques so that biogas output fluctuation is very big, and the fluctuation of biogas output is necessarily led
The fluctuation of Biogas Generator Set load is caused, so as to cause the start-stop of generator frequent, influences the normal table operation of generating set.
The content of the invention
In view of the shortcomings of the prior art, it is contemplated that a kind of solving the biogas generator of above-mentioned technical problem in providing
Group load kinetic-control system and method.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of Biogas Generator Set load kinetic-control system, it includes control unit and biogas pressure sampling unit；
The biogas pressure sampling unit is used to gather the biogas pressure in air container in real time, and biogas pressure corresponding to generation
Force electrical signal P；
The control unit calculates according to the biogas pressure electric signal in preset time period and obtains biogas pressure rate of change K；
The control unit is according to the biogas pressure electric signal P and the biogas pressure rate of change K dynamic regulation marsh gas power generations
The present load power of unit.
Preferably, the control unit is preset with the first rate of change threshold k 1, the second rate of change threshold k 2 and the 3rd becomes
Change rate-valve value K3, wherein, K1<K2<K3；
The control unit judges that biogas pressure rate of change K is less than the first rate of change threshold k 1, or becomes first
Change between rate-valve value K1 and the second rate of change threshold k 2, or in the second rate of change threshold k 2 and the 3rd rate of change threshold
Between value K3, the 3rd rate of change threshold k 3 is also greater than；
If biogas pressure rate of change K is less than the first rate of change threshold k 1, the control unit does not start marsh gas power generation
Unit；
If biogas pressure rate of change K is between the first rate of change threshold k 1 and the second rate of change threshold k 2, the control
Device processed starts small power generator group, according to the bearing power of biogas pressure electric signal P dynamic regulation small power generator groups；
If biogas pressure rate of change K is between the second rate of change threshold k 2 and the 3rd rate of change threshold k 3, the control
Device processed starts the electricity generation unit of Biogas Generator Set, according to biogas pressure electric signal P dynamic regulation high-power generators
The bearing power of group；
If biogas pressure rate of change K is more than the 3rd rate of change threshold k 3, the controller starts electricity generation unit,
After a predetermined time delay, start small power generator group, and according to biogas pressure electric signal P dynamic regulation biogas generators
The bearing power of group.
Preferably, control is singly preset with first pressure signal threshold value P1, and the controller judges that biogas pressure electric signal P is big
In first pressure signal threshold value P1, first pressure signal threshold value P1 is also equal to, is also less than first pressure signal threshold value P1；If
Biogas pressure electric signal P is greater than first pressure signal threshold value P1, and the controller continues to improve the load of small power generator group
Power；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, the controller maintains small power generator group current
Bearing power；If biogas pressure electric signal P is less than first pressure signal threshold value P1, the controller reduces small-power with preset ratio
The bearing power of generating set.
Preferably, control is singly preset with first pressure signal threshold value P1, and the controller judges that biogas pressure electric signal P is big
In first pressure signal threshold value P1, first pressure signal threshold value P1 is also equal to, is also less than first pressure signal threshold value P1；If
Biogas pressure electric signal P is more than first pressure signal threshold value P1, and the controller continues to improve the load work(of electricity generation unit
Rate；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, the controller maintains electricity generation unit is current to bear
Carry power；If biogas pressure electric signal P is less than first pressure signal threshold value P1, the controller reduces high-power hair with preset ratio
The bearing power of group of motors.
Preferably, control is singly preset with first pressure signal threshold value P1, and the controller judges that biogas pressure electric signal P is big
In first pressure signal threshold value P1, first pressure signal threshold value P1 is also equal to, is also less than first pressure signal threshold value P1；If
Biogas pressure electric signal P is more than first pressure signal threshold value P1, and the controller continues to improve the bearing power of Biogas Generator Set；
If biogas pressure electric signal P is equal to first pressure signal threshold value P1, the controller maintains the current load work(of Biogas Generator Set
Rate；If biogas pressure electric signal P is less than first pressure signal threshold value P1, the controller reduces Biogas Generator Set with preset ratio
Bearing power.
A kind of Biogas Generator Set load dynamic control method, comprises the following steps：
Step S1：Biogas pressure electric signal P is obtained, and is calculated and obtained according to the biogas pressure electric signal in preset time period
Biogas pressure rate of change K；And
Step S2：According to working as the biogas pressure electric signal P and the biogas pressure rate of change K dynamic regulation generating sets
Preceding bearing power.
Preferably, step S2 includes following sub-step：
Step A：Judge that biogas pressure rate of change K is less than the first rate of change threshold k 1, or in the first change speed
Between the rate of change threshold k 2 of rate threshold k 1 and second, or in the second rate of change threshold k 2 and the 3rd rate of change threshold k 3
Between, also it is greater than the 3rd rate of change threshold k 3；Biogas pressure rate of change K is less than the first rate of change threshold k 1, holds
Row step B；If biogas pressure rate of change K between the first rate of change threshold k 1 and the second rate of change threshold k 2, is performed
Step C；Biogas pressure rate of change K performs step between the second rate of change threshold k 2 and the 3rd rate of change threshold k 3
E；If biogas pressure rate of change K is more than the 3rd rate of change threshold k 3, step G is performed；
Step B：Do not start Biogas Generator Set；
Step C：Start small power generator group；
Step D：According to the bearing power of biogas pressure electric signal P dynamic regulation small power generator groups；
Step E：Start electricity generation unit；
Step F：According to the bearing power of biogas pressure electric signal P dynamic regulation electricity generation units；
Step G：Start electricity generation unit；
Step H：After a predetermined time delay, start small power generator group；And
Step I：According to the bearing power of biogas pressure electric signal P dynamic regulation Biogas Generator Sets.
Preferably, step D includes following sub-step：
Step D1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure letter
Number threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1,
Perform step D2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step D3 is performed；If biogas pressure telecommunications
Number P is less than first pressure signal threshold value P1, performs step D4；
Step D2：The bearing power of small power generator group is improved with preset ratio；
Step D3：Maintain the current bearing power of small power generator group；And
Step D4：The bearing power of small power generator group is reduced with preset ratio.
Step F includes following sub-step：
Step F1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure letter
Number threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1,
Perform step F2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step F3 is performed；If biogas pressure telecommunications
Number P is less than first pressure signal threshold value P1, performs step F4；
Step F2：The bearing power of electricity generation unit is improved with preset ratio；
Step F3：Maintain the current bearing power of electricity generation unit；And
Step F4：The bearing power of electricity generation unit is reduced with preset ratio.
Preferably, step I includes following sub-step：
Step I1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure letter
Number threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1,
Perform step I2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step I3 is performed；If biogas pressure telecommunications
Number P is less than first pressure signal threshold value P1, performs step I4.
Step I2：The bearing power of Biogas Generator Set is improved with preset ratio；
Step I3：Maintain the current bearing power of small-power Biogas Generator Set；And
Step I4：The bearing power of Biogas Generator Set is reduced with preset ratio.
Beneficial effects of the present invention are at least as follows：
The present invention can integrate the payload dynamic regulation generating with reference to methane quantity, methane quantity variation tendency and generating set
The load output power of unit, the frequent starting and all standing for avoiding generating set open suddenly.
Brief description of the drawings
Fig. 1 is the structural representation of the better embodiment of Biogas Generator Set load kinetic-control system of the present invention.
Fig. 2 is the broad flow diagram of the better embodiment of Biogas Generator Set load dynamic control method of the present invention.
Fig. 3 is the flow chart of the sub-step of Fig. 2 Biogas Generator Set load dynamic control method.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described further：
Fig. 1 is referred to, the present invention relates to a kind of Biogas Generator Set load kinetic-control system, its better embodiment bag
Include control unit and biogas pressure sampling unit.
The biogas pressure sampling unit is used to gather the biogas pressure in air container in real time, and biogas pressure corresponding to generation
Force electrical signal P；
The control unit calculates according to the biogas pressure electric signal in preset time period and obtains biogas pressure rate of change K
(i.e. the changing value of biogas pressure each second), biogas pressure rate of change K can accurately reflect forward end gas flow actual conditions,
Also the gas flow of air container memory storage can be indicated indirectly；
The control unit is according to the biogas pressure electric signal P and the biogas pressure rate of change K dynamic regulation marsh gas power generations
The present load power of unit.
In this way, the present invention can integrate the payload dynamic tune with reference to methane quantity, methane quantity variation tendency and generating set
The load output power of generating set is saved, the frequent starting and all standing for avoiding generating set open suddenly.
In the present embodiment, the control unit is preset with the first rate of change threshold k 1, the second rate of change threshold k 2 and
Three rate of change threshold ks 3, wherein, K1<K2<K3；Control unit is also preset with first pressure signal threshold value P1.
The control unit judges that biogas pressure rate of change K is less than the first rate of change threshold k 1, or becomes first
Change between rate-valve value K1 and the second rate of change threshold k 2, or in the second rate of change threshold k 2 and the 3rd rate of change threshold
Between value K3, the 3rd rate of change threshold k 3 is also greater than；
If biogas pressure rate of change K is less than the first rate of change threshold k 1, represent that the tolerance in air container is very low,
The underrun of Biogas Generator Set can not be maintained, the control unit does not start Biogas Generator Set.
If biogas pressure rate of change K between the first rate of change threshold k 1 and the second rate of change threshold k 2, is represented
Tolerance in air container is relatively low, and the small power generator group being able to maintain that in Biogas Generator Set is with more than 50% load fortune
OK.The controller starts small power generator group, according to the load of biogas pressure electric signal P dynamic regulation small power generator groups
Power；
Specifically, the controller judges that biogas pressure electric signal P is greater than first pressure signal threshold value P1, is also equal to
One pressure signal threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal
Threshold value P1, the controller continue to improve the bearing power of small power generator group；If biogas pressure electric signal P is equal to first pressure
Signal threshold value P1, the controller maintain the current bearing power of small power generator group；If biogas pressure electric signal P is less than first
Pressure signal threshold value P1, the controller reduce the bearing power of small power generator group with preset ratio.
Preferably, the system also includes methane pretreatment apparatus, the gas outlet of controller detection methane pretreatment apparatus
The pressure signal P 9 of the air inlet of pressure signal P 8 and Biogas Generator Set, and judge whether pressure signal P 8 is less than pressure signal
P9, if so, not starting small power generator group；If it is not, just start small power generator group.
If biogas pressure rate of change K between the second rate of change threshold k 2 and the 3rd rate of change threshold k 3, is represented
Tolerance in air container is larger, is able to maintain that the load of electricity generation unit 50% operates above；The controller starts biogas
The electricity generation unit of generating set, according to the bearing power of biogas pressure electric signal P dynamic regulation electricity generation units；
Specifically, the controller judges that biogas pressure electric signal P is greater than first pressure signal threshold value P1, is also equal to
One pressure signal threshold value P1, is also less than first pressure signal threshold value P1, is also greater than or equal to second pressure signal threshold value P2；
If biogas pressure electric signal P is more than first pressure signal threshold value P1, the controller continues to improve the load of electricity generation unit
Power；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, the controller maintains electricity generation unit current
Bearing power；If biogas pressure electric signal P is less than first pressure signal threshold value P1, the controller is reduced high-power with preset ratio
The bearing power of generating set.
If biogas pressure rate of change K is more than the 3rd rate of change threshold k 3, represent that the tolerance in air container is very big, should
Controller starts electricity generation unit, after a predetermined time delay, starts small power generator group, according to biogas pressure electricity
The bearing power of signal P dynamic regulations Biogas Generator Set (including electricity generation unit and small power generator group)；
Specifically, the controller judges that biogas pressure electric signal P is greater than first pressure signal threshold value P1, is also equal to
One pressure signal threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal
Threshold value P1, the controller continue to improve the bearing power of Biogas Generator Set；If biogas pressure electric signal P believes equal to first pressure
Number threshold value P1, the controller maintain the current bearing power of Biogas Generator Set；If biogas pressure electric signal P is less than first pressure
Signal threshold value P1, the controller reduce the bearing power of Biogas Generator Set with preset ratio.
In this way, the present invention is not only able to quickly adjust generator load, the tolerance situation of change of biogas can also be carried out pre-
Sentence, so that it is determined that the suitable load to generate electricity, ensures the continuity and high efficiency of generator operation, avoid frequent start-stop from influenceing hair
The life-span of group of motors.
In other embodiment, present invention additionally comprises generating set operating load sampling apparatus, for sampling biogas generator
The bearing power of group；
Preferably, if biogas pressure electric signal P is less than first pressure signal threshold value P1, the controller is dropped with preset ratio
The bearing power of low Biogas Generator Set, and it is less than default load power threshold such as 50% in the bearing power of Biogas Generator Set
When, do not start Biogas Generator Set.
Above-mentioned control unit may include controller and generating set parallel connection control system, the above-mentioned each collection of controller processing
Parameter, evaluation algorithm and execution signal is sent according to judged result；The generating set parallel connection control system is used for according to performing letter
The operation of number corresponding driving Biogas Generator Set.
Preferably, the controller is also preset with the second biogas pressure signal threshold value P2 and the 3rd biogas pressure signal threshold value
P3, and P3>P2>P1；When biogas pressure signal is more than the 3rd biogas pressure signal threshold value P3, the controller is fired by a biogas
The torch that makes a fire consumes the gas flow in the air container, to reduce biogas pressure signal, until air pressure force signal is equal to the second biogas
Pressure signal threshold value P2, close biogas combustion torch.
Referring to Fig. 2, a kind of Biogas Generator Set load dynamic control method, applied to above-mentioned control unit, including it is following
Step：
Step S1：Biogas pressure electric signal P is obtained, and is calculated and obtained according to the biogas pressure electric signal in preset time period
Biogas pressure rate of change K；And
Step S2：According to working as the biogas pressure electric signal P and the biogas pressure rate of change K dynamic regulation generating sets
Preceding bearing power.
In the present embodiment, step S2 includes following sub-step：
Step A：Judge that biogas pressure rate of change K is less than the first rate of change threshold k 1, or in the first change speed
Between the rate of change threshold k 2 of rate threshold k 1 and second, or in the second rate of change threshold k 2 and the 3rd rate of change threshold k 3
Between, also it is greater than the 3rd rate of change threshold k 3；Biogas pressure rate of change K is less than the first rate of change threshold k 1, holds
Row step B；If biogas pressure rate of change K between the first rate of change threshold k 1 and the second rate of change threshold k 2, is performed
Step C；Biogas pressure rate of change K performs step between the second rate of change threshold k 2 and the 3rd rate of change threshold k 3
E；If biogas pressure rate of change K is more than the 3rd rate of change threshold k 3, step G is performed.
Step B：Do not start Biogas Generator Set；
Step C：Start small power generator group；
Step D：According to the bearing power of biogas pressure electric signal P dynamic regulation small power generator groups.
Referring to Fig. 3, step D includes following sub-step：
Step D1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure letter
Number threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1,
Perform step D2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step D3 is performed；If biogas pressure telecommunications
Number P is less than first pressure signal threshold value P1, performs step D4.
Step D2：The bearing power of small power generator group is improved with preset ratio；
Step D3：Maintain the current bearing power of small power generator group；And
Step D4：The bearing power of small power generator group is reduced with preset ratio.
Step E：Start electricity generation unit；
Step F：According to the bearing power of biogas pressure electric signal P dynamic regulation electricity generation units.
Preferably, step F includes following sub-step：
Step F1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure letter
Number threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1,
Perform step F2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step F3 is performed；If biogas pressure telecommunications
Number P is less than first pressure signal threshold value P1, performs step F4；
Step F2：The bearing power of electricity generation unit is improved with preset ratio；
Step F3：Maintain the current bearing power of electricity generation unit；
Step F4：The bearing power of electricity generation unit is reduced with preset ratio.
Step G：Start electricity generation unit；
Step H：After a predetermined time delay, start small power generator group；
Step I：According to the bearing power of biogas pressure electric signal P dynamic regulation Biogas Generator Sets.
Preferably, step I includes following sub-step：
Step I1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure letter
Number threshold value P1, is also less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1,
Perform step I2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step I3 is performed；If biogas pressure telecommunications
Number P is less than first pressure signal threshold value P1, performs step I4.
Step I2：The bearing power of Biogas Generator Set is improved with preset ratio；
Step I3：Maintain the current bearing power of small-power Biogas Generator Set；
Step I4：The bearing power of Biogas Generator Set is reduced with preset ratio.
For those skilled in the art, technical scheme that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deformed the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (8)
- A kind of 1. Biogas Generator Set load kinetic-control system, it is characterised in that：It includes control unit and biogas pressure is adopted Sample unit；The biogas pressure sampling unit is used to gather the biogas pressure in air container in real time, and biogas pressure electricity corresponding to generation Signal P；The control unit calculates according to the biogas pressure electric signal P in preset time period and obtains biogas pressure rate of change K；The control Unit processed is preset with the first rate of change threshold k 1, the second rate of change threshold k 2 and the 3rd rate of change threshold k 3, wherein, K1 ＜ K2 ＜ K3；The control unit judges that biogas pressure rate of change K is less than the first rate of change threshold k 1, or in the first change speed Between the rate of change threshold k 2 of rate threshold k 1 and second, or in the second rate of change threshold k 2 and the 3rd rate of change threshold k 3 Between, also it is greater than the 3rd rate of change threshold k 3；If biogas pressure rate of change K is less than the first rate of change threshold k 1, the control unit does not start Biogas Generator Set；If biogas pressure rate of change K is between the first rate of change threshold k 1 and the second rate of change threshold k 2, the control list Member starts small power generator group, is able to maintain that the small power generator group in Biogas Generator Set more than 50% load to transport OK；According to the bearing power of biogas pressure electric signal P dynamic regulation small power generator groups；If biogas pressure rate of change K is between the second rate of change threshold k 2 and the 3rd rate of change threshold k 3, the control list Member starts the electricity generation unit of Biogas Generator Set, is able to maintain that the load of electricity generation unit 50% operates above；Root According to the bearing power of biogas pressure electric signal P dynamic regulation electricity generation units；If biogas pressure rate of change K is more than the 3rd rate of change threshold k 3, the control unit starts electricity generation unit, After a predetermined time delay, start small power generator group, and according to biogas pressure electric signal P dynamic regulation biogas generators The bearing power of group；The control unit is according to the biogas pressure electric signal P and the biogas pressure rate of change K dynamic regulation Biogas Generator Sets Present load power.
- 2. Biogas Generator Set load kinetic-control system as claimed in claim 1, it is characterised in that：Control unit is preset with First pressure signal threshold value P1, the control unit judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, still Equal to first pressure signal threshold value P1, first pressure signal threshold value P1 is also less than；If biogas pressure electric signal P is greater than first Pressure signal threshold value P1, the control unit continue to improve the bearing power of small power generator group；If biogas pressure electric signal P etc. In first pressure signal threshold value P1, the control unit maintains the current bearing power of small power generator group；If biogas pressure is electric Signal P is less than first pressure signal threshold value P1, and the control unit reduces the bearing power of small power generator group with preset ratio.
- 3. Biogas Generator Set load kinetic-control system as claimed in claim 1, it is characterised in that：Control unit is preset with First pressure signal threshold value P1, the control unit judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, still Equal to first pressure signal threshold value P1, first pressure signal threshold value P1 is also less than；If biogas pressure electric signal P is more than the first pressure Force signal threshold value P1, the control unit continue to improve the bearing power of electricity generation unit；If biogas pressure electric signal P is equal to First pressure signal threshold value P1, the control unit maintain the current bearing power of electricity generation unit；If biogas pressure telecommunications Number P is less than first pressure signal threshold value P1, and the control unit reduces the bearing power of electricity generation unit with preset ratio.
- 4. Biogas Generator Set load kinetic-control system as claimed in claim 1, it is characterised in that：Control unit is preset with First pressure signal threshold value P1, the control unit judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, still Equal to first pressure signal threshold value P1, first pressure signal threshold value P1 is also less than；If biogas pressure electric signal P is more than the first pressure Force signal threshold value P1, the control unit continue to improve the bearing power of Biogas Generator Set；If biogas pressure electric signal P is equal to the One pressure signal threshold value P1, the control unit maintain the current bearing power of Biogas Generator Set；If biogas pressure electric signal P is small In first pressure signal threshold value P1, the control unit reduces the bearing power of Biogas Generator Set with preset ratio.
- 5. a kind of Biogas Generator Set load dynamic control method, comprises the following steps：Step S1：Biogas pressure electric signal P is obtained, and is calculated according to the biogas pressure electric signal in preset time period and obtains biogas Rate of pressure change K；AndStep S2：Born according to the biogas pressure electric signal P and the current of the biogas pressure rate of change K dynamic regulation generating sets Carry power；Step S2 includes following sub-step：Step A：Judge that biogas pressure rate of change K is less than the first rate of change threshold k 1, or in the first rate of change threshold Between value K1 and the second rate of change threshold k 2, or the second rate of change threshold k 2 and the 3rd rate of change threshold k 3 it Between, also it is greater than the 3rd rate of change threshold k 3；Biogas pressure rate of change K is less than the first rate of change threshold k 1, performs Step B：Do not start Biogas Generator Set；If biogas pressure rate of change K is in the first rate of change threshold k 1 and the second change speed Between rate threshold k 2,Perform step C：Start small power generator group, be able to maintain that small power generator group in Biogas Generator Set with 50% load operates above；Step D is performed again：According to the load of biogas pressure electric signal P dynamic regulation small power generator groups Power；Biogas pressure rate of change K performs step E between the second rate of change threshold k 2 and the 3rd rate of change threshold k 3： Start electricity generation unit, be able to maintain that the load of electricity generation unit 50% operates above；Step F is performed again：According to natural pond The bearing power of air pressure force electrical signal P dynamic regulation electricity generation units；If biogas pressure rate of change K is more than the 3rd change Rate-valve value K3, perform step G：Start electricity generation unit；Step H is performed again：After a predetermined time delay, start small Power generation unit；And perform step I：According to the bearing power of biogas pressure electric signal P dynamic regulation Biogas Generator Sets；Wherein, K1 ＜ K2 ＜ K3.
- 6. Biogas Generator Set load dynamic control method as claimed in claim 5, it is characterised in that：Step D includes following Sub-step：Step D1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure signal threshold Value P1, also it is less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1, perform Step D2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step D3 is performed；If biogas pressure electric signal P is small In first pressure signal threshold value P1, step D4 is performed；Step D2：The bearing power of small power generator group is improved with preset ratio；Step D3：Maintain the current bearing power of small power generator group；AndStep D4：The bearing power of small power generator group is reduced with preset ratio.
- 7. Biogas Generator Set load dynamic control method as claimed in claim 5, it is characterised in that：Step F includes following Sub-step：Step F1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure signal threshold Value P1, also it is less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1, perform Step F2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step F3 is performed；If biogas pressure electric signal P is small In first pressure signal threshold value P1, step F4 is performed；Step F2：The bearing power of electricity generation unit is improved with preset ratio；Step F3：Maintain the current bearing power of electricity generation unit；AndStep F4：The bearing power of electricity generation unit is reduced with preset ratio.
- 8. Biogas Generator Set load dynamic control method as claimed in claim 5, it is characterised in that：Step I includes following Sub-step：Step I1：Judge that biogas pressure electric signal P is greater than first pressure signal threshold value P1, be also equal to first pressure signal threshold Value P1, also it is less than first pressure signal threshold value P1；If biogas pressure electric signal P is more than first pressure signal threshold value P1, perform Step I2；If biogas pressure electric signal P is equal to first pressure signal threshold value P1, step I3 is performed；If biogas pressure electric signal P is small In first pressure signal threshold value P1, step I4 is performed；Step I2：The bearing power of Biogas Generator Set is improved with preset ratio；Step I3：Maintain the current bearing power of small-power Biogas Generator Set；AndStep I4：The bearing power of Biogas Generator Set is reduced with preset ratio.
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