CN102182570B - Methane power generation control method - Google Patents
Methane power generation control method Download PDFInfo
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- CN102182570B CN102182570B CN 201110089371 CN201110089371A CN102182570B CN 102182570 B CN102182570 B CN 102182570B CN 201110089371 CN201110089371 CN 201110089371 CN 201110089371 A CN201110089371 A CN 201110089371A CN 102182570 B CN102182570 B CN 102182570B
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Abstract
The invention discloses a methane power generation control device and method, belonging to the field of energy source control. The methane power generation control device comprises a methane storage device, a generator unit comprising N generators G1, G2, ......, GN, a controller and a pressure sensor, wherein N is a natural number greater than or equal to 2; an output end of the controller is respectively connected with an input end of each generator in the generator unit, and the controller controls the on-off of each generator; a methane outlet of the methane storage device is connected with the pressure sensor, and the pressure sensor is used for sensing the pressure of methane in the methane storage device; and an output end of the pressure sensor is connected with an input end of the controller and outputs a pressure signal of methane to the controller, and the controller calculates the methane quantity in the methane storage device according to the pressure signal. Through the device, the intelligent switchover between generator power supply and mains power supply in a medium and small size power station is realized, and energy source waste is reduced on the premise of ensuring continuous power supply.
Description
Technical field
The present invention relates to a kind of marsh gas power generation controlling method, particularly a kind of marsh gas power generation controlling method that is applicable to middle-size and small-size power station.
Background technique
At present, adopt more and more biogas as energy source in China rural area, can solve on the one hand a part of rural area with the energy problem, can effectively solve the environmental pollution problem of big-and-middle-sized plant on the other hand.Therefore, set up a lot of middle-size and small-size power stations in China rural area, these middle-size and small-size power stations utilize biogas to generate electricity to solve a part of electrical problem of plant.Because middle-size and small-size power station often mainly directly provides electric energy for specific equipment, be not connected with electrical network, the power supply of equipment can only be adopted a kind of mode in generator powered and mains-supplied.Because different period power consumptions and biogas production are different in one day, this just makes when adopting generator powered may exist the too much or not enough situation of generated energy, so that forms new energy waste.
Summary of the invention
The object of the invention is to: for the problem of above-mentioned existence, a kind of marsh gas power generation controlling method is provided, it adopts generator powered when the marsh gas power generation amount satisfies need for electricity, when can not satisfying need for electricity, the marsh gas power generation amount adopts mains-supplied, thereby the intelligence that has realized generator powered and mains-supplied in middle-size and small-size power station is switched, and has reduced energy waste under the prerequisite that guarantees continued power.
To achieve these goals, the invention provides a kind of marsh gas power generation controlling method, it is characterized in that carrying out according to following steps:
(1) unit that sets the biogas amount is for rising, and the unit of electric weight is degree, and every liter of methane energy generates n degree electric energy;
(2) the burning biogas amount Q that consumes every day of statistics location
Burning, the biogas production amount Q of biomass pool
AlwaysDeduct burning biogas amount Q
BurningObtain the generating biogas amount Q of every day
Generating, according to the generating biogas amount Q of every day
GeneratingDetermine the number N of generator G in generator set, determine generator G
1, G
2..., G
NCapacity P
1, P
2..., P
NAnd engine mumber and capacity numerical value thereof are stored in controller, and wherein N is 〉=2 natural number, generator capacity summation P in generator set
1+ P
2+ ... + P
NBiogas amount Q equals to generate electricity every day
GeneratingGenerated energy Q
Generating* n, biogas production amount Q
AlwaysWhen building, biomass pool set;
(3) statistics each equipment every day uses the burning biogas amount q of period
Burning, and each equipment is used the burning biogas amount q of period
BurningValue storage is to controller;
(4) statistics each equipment every day uses the need electric weight X of period, and uses the need electric weight X number of degrees of period to be stored in controller each equipment;
(5) controller receives the pressure signal of biogas caisson from pressure transducer, and then calculates the biogas amount q of each equipment use period in caisson
Always, controller is with the biogas amount q of a period
AlwaysDeduct the burning biogas amount q of this period
BurningObtain the generating biogas amount q of this period
Generating, q wherein
Always, q
BurningAnd q
GeneratingAll variable, different in each period;
(6) because every liter of methane energy generates n degree electric energy, each equipment uses period generating biogas amount q
GeneratingGenerated energy be q
Generating* if n is at a period generating biogas amount q
GeneratingGenerated energy can not satisfy need for electricity, i.e. q
Generating* during n＜X, controller is controlled generator and is quit work, and turns by mains-supplied; If at a period generating biogas amount q
GeneratingGenerated energy can satisfy need for electricity, q
Generating* during n 〉=X, controller is controlled the generator in the starter-generator group, by generator powered.
When in described step (6), in generator set, each generator capacity is identical, if residue need electric weight △ X be △ X=X-(P after S platform generator is operated at full capacity
1+ P
2+ ... + P
s), and should residue need generator capacity in the not enough generator set of electric weight, controller is controlled any generator in the starter-generator group, and need electric weight △ X according to operate at full capacity rear residue of S platform generator, the aperture of the electric control valve that control is connected with this generator suction port, offer the biogas amount of this generator to regulate caisson, make this generator be in the non-state of operating at full capacity, wherein S is integer.
When in step (6), in generator set, each generator capacity was not identical, controller was chosen the generator combination that the capacity summation need to equal electric weight X in generator set, and controlled this generator combination of startup.
If do not exist the capacity summation need to equal the generator combination of electric weight X in described generator set, namely residue need electric weight △ X be △ X=X-(P after S platform generator is operated at full capacity
1+ P
2+ ... + P
s), and when should residue needing in the not enough generator set of electric weight any generator capacity, controller is controlled capacity and the immediate generator of this residue need electric weight △ X in the starter-generator group, and the generated energy when wherein generator is operated at full capacity is generator capacity and S is integer.
In addition, if do not exist the capacity summation need to equal the generator combination of electric weight X in described generator set, namely residue need electric weight △ X be △ X=X-(P after S platform generator is operated at full capacity
1+ P
2+ ... + P
s), and when should residue needing in the not enough generator set of electric weight any generator capacity, controller is any generator in the random start generator set, and need electric weight △ X to control the aperture of the electric control valve that is connected with this generator suction port according to operate at full capacity rear residue of S platform generator, offer the biogas amount of this generator to regulate caisson, make this generator be in the non-state of operating at full capacity, wherein S is integer.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
1, the present invention has adopted controller and pressure transducer, the pressure signal that provides by pressure transducer, controller can calculate the biogas amount in each equipment use period caisson, the burning biogas amount that this biogas amount deducts this period is the generating biogas amount that can be used for generating, if the generated energy of this generating biogas amount can satisfy need for electricity, controller is controlled the starter-generator power supply, if generating biogas measures generated energy and can not satisfy need for electricity, controller is controlled and is stopped generator, turn by mains-supplied, thereby the intelligence that has realized generator powered and mains-supplied in middle-size and small-size power station is switched, reduced energy waste under the prerequisite that guarantees continued power,
2, the present invention has also adopted electric control valve, when the need electric weight can not be guaranteed the operating at full capacity of one or more generator (namely needing the generated energy of the not enough one or more generators of electric weight) simultaneously, controller can need electric weight △ X according to residue, control the aperture of electric control valve, and then the control caisson offers the biogas amount of generator, make this generator be in the non-state of operating at full capacity, thereby further reduced energy waste.
Description of drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the frame principle figure of this methane power generation control device in one embodiment of the present of invention;
Fig. 2 is the frame principle figure of this methane power generation control device in an alternative embodiment of the invention;
Fig. 3 is the flow chart of this marsh gas power generation controlling method in the present invention.
Mark in figure: 1 is the air outlet, and 2 is suction port, G
1..., G
NBe generator, V
1..., V
NBe electric control valve.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
As shown in Figure 1, this methane power generation control device comprises for the caisson of storage biogas, by N generator G
1, G
2..., G
NThe generator set (wherein N is 〉=2 natural number), controller and the pressure transducer that consist of, the output terminal of controller is connected with the input end of each generator in generator set respectively, is controlled the keying of each generator by this controller; The air outlet 1 of caisson is connected with pressure transducer, and this pressure transducer is used for the pressure of sensing caisson biogas; The output terminal of pressure transducer is connected with the input end of controller and the pressure signal of exporting biogas is given this controller, and controller can calculate biogas amount in caisson according to this pressure signal.Because middle-size and small-size power station is not connected with electrical network usually, the power supply of equipment can only be adopted a kind of mode in generator powered and mains-supplied, traditional marsh gas power generation mode can not realize the intelligence switching of generator powered and mains-supplied, this device can adopt generator powered when the marsh gas power generation amount satisfies need for electricity, adopt mains-supplied when the marsh gas power generation amount can not satisfy need for electricity, thereby reduced the waste of the energy under the prerequisite that guarantees continued power.
As described in Figure 2, this methane power generation control device also comprises the electric control valve group on the basis of structure shown in Figure 1, and this electric control valve group is by N electric control valve V
1, V
2..., V
NConsist of.The air outlet 1 of caisson is successively by electric control valve corresponding in the electric control valve group, respectively with generator set in the suction port 2 of corresponding generator be connected; The output terminal of controller is connected with the input end of electric control valve, and this controller needs electric weight △ X according to operate at full capacity rear residue of S platform generator, controls this electric control valve, thereby regulates the biogas amount that offers generator.After operating at full capacity, s platform generator need electric weight also to have unnecessary electric weight, and this unnecessary electric weight is not enough to satisfy when in generator set, any generator is operated at full capacity, controller regulates by the aperture of controlling electric control valve the biogas amount that offers generator, make this generator be in the non-state of operating at full capacity, thereby further reduced energy waste.It should be noted: this controller includes but not limited to the PLC control cabinet.
As shown in Figure 3, this marsh gas power generation controlling method is carried out according to following steps:
(1) unit that sets the biogas amount is for rising, and the unit of electric weight is degree, and every liter of methane energy generates n degree electric energy;
(2) the burning biogas amount Q that consumes every day of statistics location
Burning, biogas production amount Q
AlwaysDeduct burning biogas amount Q
BurningObtain the generating biogas amount Q of every day
Generating, according to the generating biogas amount Q of every day
GeneratingDetermine the number N of generator G in generator set, determine generator G
1, G
2..., G
NCapacity P
1, P
2..., P
NAnd engine mumber and capacity numerical value thereof are stored in controller, and wherein N is 〉=2 natural number, generator capacity summation P in generator set
1+ P
2+ ... + P
NBiogas amount Q equals to generate electricity every day
GeneratingGenerated energy Q
Generating* n, biogas production amount Q
AlwaysWhen building, biomass pool set;
(3) statistics each equipment every day uses the burning biogas amount q of period
Burning, and each equipment is used the burning biogas amount q of period
BurningValue storage is to controller;
(4) statistics each equipment every day uses the need electric weight X of period, and uses the need electric weight X number of degrees of period to be stored in controller each equipment;
(5) controller receives the pressure signal of biogas caisson from pressure transducer, and then calculates the biogas amount q of each equipment use period in caisson
Always, controller is with the biogas amount q of a period
AlwaysDeduct the burning biogas amount q of this period
BurningObtain the generating biogas amount q of this period
Generating, q wherein
Always, q
BurningAnd q
GeneratingIt is all variable;
(6) because every liter of methane energy generates n degree electric energy, each equipment uses period generating biogas amount q
GeneratingGenerated energy be q
Generating* if n is at a period generating biogas amount q
GeneratingGenerated energy can not satisfy need for electricity, i.e. q
Generating* during n＜X, controller is controlled generator and is quit work, and turns by mains-supplied; If at a period generating biogas amount q
GeneratingGenerated energy can satisfy need for electricity, q
Generating* during n 〉=X, controller is controlled generator in the starter-generator group, by generator powered.
Pass through above-mentioned steps, when satisfying need for electricity, the marsh gas power generation amount adopts generator powered, adopt mains-supplied when the marsh gas power generation amount can not satisfy need for electricity, thereby realized the intelligence switching of generator powered and mains-supplied, reduced energy waste under the prerequisite that guarantees continued power.It should be noted: in above-mentioned steps the period really normal root decide according to the service time of equipment, this period includes but not limited to 1 hour.
In generator set, each generator capacity is identical in step (6), i.e. P
1=P
2=...=P
NDuring=P, if residue need electric weight △ X be △ X=X-(P after S platform generator is operated at full capacity
1+ P
2+ ... + P
s), and this residue needs a generator capacity (being generated energy) in the not enough generator set of electric weight, controller is controlled any generator in the starter-generator group, and need electric weight △ X according to operate at full capacity rear residue of S platform generator, the aperture of the electric control valve that control is connected with the suction port of this generator offers the biogas amount of this generator to regulate caisson, make this generator be in the non-state of operating at full capacity, thereby further reduce the waste of the energy, wherein S is integer.
When in generator set, each generator capacity was not identical in step (6), controller was chosen the generator combination that the capacity summation need to equal electric weight X in generator set, and controlled this generator combination of startup.
If do not exist the capacity summation need to equal the generator combination of electric weight X in generator set, namely residue need electric weight △ X be △ X=X-(P after S platform generator is operated at full capacity (generated energy when generator is operated at full capacity is generator capacity)
1+ P
2+ ... + P
s), and this residue is when needing in the not enough generator set of electric weight any generator capacity (being generated energy), controller is controlled capacity and the immediate generator of this residue need electric weight △ X in the starter-generator group, can reduce the waste of biogas thus, but still have more biogas waste, effect is not fine.
Any generator in all right random start generator set of above-mentioned situation middle controller, and need electric weight △ X according to operate at full capacity rear residue of S platform generator, the aperture of the electric control valve that control is connected with this generator suction port, offer the biogas amount of this generator to regulate caisson, make this generator be in the non-state of operating at full capacity, thereby further reduce the waste of biogas.
In addition, the waste heat of generator can also be collected heating or the heating of worker's domestic water etc. as anaerobic fermentation tank.Due to noon be all at dusk to occupy the domestic gas peak period, so should be as far as possible in design process use period of equipment be arranged in the morning or afternoon.The intelligence that is no matter generator powered and mains-supplied is switched, or the adjusting (being the adjusting of electric control valve) of biogas amount in generator, can be automatically or manually control.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (5)
1. marsh gas power generation controlling method is characterized in that carrying out according to following steps:
(1) unit that sets the biogas amount is for rising, and the unit of electric weight is degree, and every liter of methane energy generates n degree electric energy;
(2) the burning biogas amount Q that consumes every day of statistics location
Burning, the biogas production amount Q of biomass pool
AlwaysDeduct burning biogas amount Q
BurningObtain the generating biogas amount Q of every day
Generating, according to the generating biogas amount Q of every day
GeneratingDetermine the number N of generator G in generator set, determine generator G
1, G
2..., G
NCapacity P
1, P
2..., P
NAnd engine mumber and capacity numerical value thereof are stored in controller, and wherein N is 〉=2 natural number, generator capacity summation P in generator set
1+ P
2+ ... + P
NBiogas amount Q equals to generate electricity every day
GeneratingGenerated energy Q
Generating* n, described biogas production amount Q
AlwaysWhen building, biomass pool set;
(3) statistics each equipment every day uses the burning biogas amount q of period
Burning, and each equipment is used the burning biogas amount q of period
BurningValue storage is to controller;
(4) statistics each equipment every day uses the need electric weight X of period, and uses the need electric weight X number of degrees of period to be stored in controller each equipment;
(5) controller receives the pressure signal of biogas caisson from pressure transducer, and then calculates the biogas amount q of each equipment use period in caisson
Always, controller is with the biogas amount q of a period
AlwaysDeduct the burning biogas amount q of this period
BurningObtain the generating biogas amount q of this period
Generating, q wherein
Always, q
BurningAnd q
GeneratingIt is all variable;
(6) because every liter of methane energy generates n degree electric energy, each equipment uses period generating biogas amount q
GeneratingGenerated energy be q
Generating* if n is at a period generating biogas amount q
GeneratingGenerated energy can not satisfy need for electricity, i.e. q
Generating* during n＜X, controller is controlled generator and is quit work, and turns by mains-supplied; If at a period generating biogas amount q
GeneratingGenerated energy can satisfy need for electricity, q
Generating* during n 〉=X, controller is controlled the generator in the starter-generator group, by generator powered.
2. marsh gas power generation controlling method according to claim 1, is characterized in that: when described in described step (6), in generator set, each generator capacity is identical, if residue need electric weight △ X be △ X=X-(P after S platform generator is operated at full capacity
1+ P
2+ ... + P
s), and should residue need generator capacity in the not enough generator set of electric weight, controller is controlled any generator in the starter-generator group, and need electric weight △ X to control the aperture of the electric control valve that is connected with this generator suction port according to operate at full capacity rear residue of S platform generator, offer the biogas amount of this generator to regulate caisson, make this generator be in the non-state of operating at full capacity, wherein S is integer.
3. marsh gas power generation controlling method according to claim 1, it is characterized in that: when described in described step (6), in generator set, each generator capacity is not identical, controller is chosen the generator combination that the capacity summation need to equal electric weight X in described generator set, and controls the described generator combination of startup.
4. marsh gas power generation controlling method according to claim 3 is characterized in that: if do not exist the capacity summation need to equal the generator combination of electric weight X in described generator set, namely after S platform generator is operated at full capacity residue to need electric weight △ X be △ X=X-(P
1+ P
2+ ... + P
s), and when should residue needing in the not enough generator set of electric weight any generator capacity, controller is controlled capacity and the immediate generator of this residue need electric weight △ X in the starter-generator group, and the generated energy when wherein generator is operated at full capacity is generator capacity and S is integer.
5. marsh gas power generation controlling method according to claim 3 is characterized in that: if do not exist the capacity summation need to equal the generator combination of electric weight X in described generator set, namely after S platform generator is operated at full capacity residue to need electric weight △ X be △ X=X-(P
1+ P
2+ ... + P
s), and when should residue needing in the not enough generator set of electric weight any generator capacity, controller is any generator in the random start generator set, and need electric weight △ X to control the aperture of the electric control valve that is connected with this generator suction port according to operate at full capacity rear residue of S platform generator, offer the biogas amount of this generator to regulate caisson, make this generator be in the non-state of operating at full capacity, wherein S is integer.
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| CN 201110089371 CN102182570B (en) | 2011-04-11 | 2011-04-11 | Methane power generation control method |
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|---|---|---|---|
| CN 201110089371 CN102182570B (en) | 2011-04-11 | 2011-04-11 | Methane power generation control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257415B (en) * | 2015-11-05 | 2017-12-19 | 山东大学 | A kind of small-sized biomass gas internal combustion engine generator set control system and control method |
| CN108270217B (en) * | 2018-02-27 | 2021-03-23 | 华翔翔能科技股份有限公司 | Biogas power generation management method and system based on time-of-use electricity price policy |
| CN111690522A (en) * | 2020-06-11 | 2020-09-22 | 广东电网有限责任公司清远供电局 | Biogas power generation control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2908808Y (en) * | 2005-11-09 | 2007-06-06 | 河南农业大学 | Electric started miniature household marsh gas power generation device |
| CN101205854A (en) * | 2007-04-18 | 2008-06-25 | 申伟平 | Digital variable air input methane power generating system |
| CN201215037Y (en) * | 2008-07-16 | 2009-04-01 | 杜金宇 | Domestic biogas power generation apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8850789B2 (en) * | 2007-06-13 | 2014-10-07 | General Electric Company | Systems and methods for power generation with exhaust gas recirculation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2908808Y (en) * | 2005-11-09 | 2007-06-06 | 河南农业大学 | Electric started miniature household marsh gas power generation device |
| CN101205854A (en) * | 2007-04-18 | 2008-06-25 | 申伟平 | Digital variable air input methane power generating system |
| CN201215037Y (en) * | 2008-07-16 | 2009-04-01 | 杜金宇 | Domestic biogas power generation apparatus |
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Application publication date: 20110914 Assignee: Chongqing Kairui Agricultural Development Co., Ltd. Assignor: Chongqing Agricultural Academy of Science Contract record no.: 2013500000057 Denomination of invention: Methane power generation control method Granted publication date: 20130605 License type: Exclusive License Record date: 20130812 |
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