CN102739142B - The starting drive of electricity generation system and starting method - Google Patents
The starting drive of electricity generation system and starting method Download PDFInfo
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- CN102739142B CN102739142B CN201210103727.3A CN201210103727A CN102739142B CN 102739142 B CN102739142 B CN 102739142B CN 201210103727 A CN201210103727 A CN 201210103727A CN 102739142 B CN102739142 B CN 102739142B
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- generator
- storage portion
- power storage
- electrical power
- electric power
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
Abstract
The starting drive of the electricity generation system that the present invention relates to, described electricity generation system possesses: evaporator, makes aqueous working media evaporation and generates steam; Generator, utilizes the steam generated at evaporator to generate electricity; Condenser, makes in the devaporation of generator for generating electricity; And pump, force feed turns to aqueous working media at condenser, described electricity generation system make working media from evaporator via generator and condenser Returning evaporimeter generating electricity with generator, this starting drive has: electrical power storage portion, the electric power that storage generator sends; Circuit, can supply the electric power stored from electrical power storage portion towards pump; And counterflow-preventing unit, arrange at the circuit linking generator and electrical power storage portion, and prevent stored electric power from electrical power storage portion towards generator adverse current.According to such formation, the electric power supply not from outside in electricity generation system just can start or restart generating.
Description
Technical field
The present invention relates to the starting drive and starting method that use when starting electricity generation system.
Background technology
In the past, do not have the electricity generation system that can make the Low Temperature Thermal source recovery heat of the heat of steam turbine plant degree of rotation to carry out to generate electricity as the used heat from factory like that, noticeable have binary electricity generation system (hereinafter referred to as electricity generation system).
Such electricity generation system, if the steam that working media need not be made to evaporate and generate rotates to make generator, just can not generate electricity.Therefore, when starting electricity generation system, in other words, when restarting the electricity generation system once stopped, needing at supply electric power such as the initial pumps to making working media circulate.
Such as, No. 60-88807, Japanese Laid-Open Patent Publication discloses and has with the electricity generation system of lower part (rankine cycle (rankine cycle) generator): the transducer alternating electromotive force sent with generator being converted to direct current; The battery of the direct current power that accumulation is changed with transducer; The direct current power accumulated with battery is converted to again the inverter of interchange.Due to the self that this electricity generation system is not connected with the electric power supply system of the outside of Utilities Electric Co. etc., so can think when starting this electricity generation system, the electric power from source power supply (electric power supply system) is supplied to above-mentioned pump etc.
In addition, generator is equipment kinetic energy being converted to electric energy, but if electric energy is supplied to this generator, then given electric energy is converted into kinetic energy, and generator is rotated.Therefore, there is this problem, namely when starting electricity generation system, when the electric power that battery is accumulated is supplied to generator, generator carries out carrying out work This move as motor, thus consumes the electric power accumulated.
In addition, in the electricity generation system of above-mentioned prior art, there is the circuit arriving generator from battery via inverter, be difficult to avoid the electric power reverse flow conditions to generator.
And, when the electricity generation system of above-mentioned prior art will be used as the power supplier unit of self, in the power supplier unit of the self be not connected with the external power feed system of Utilities Electric Co. etc., because the electric power not from outside supplies, so need to accumulate electric power during being undertaken generating electricity by electricity generation system and the countermeasure when electricity generation system starts, accumulated electric power being delivered to pump use etc.In this case, can consider, with inverter, the direct current power being accumulated in battery via transducer is in advance converted to interchange again, the electric power changed again is supplied to above-mentioned pump etc., thus just not start from the electric power supply of outside.
But, even if the power supplier unit of the electricity generation system of above-mentioned prior art as self is used, due to exist as previously mentioned when starting electricity generation system electric energy be supplied to generator thus consume this problem of electric power of accumulating, so, certainly accumulated electric power fully can not be used for the startup of pump etc., also likely just can not supply reliably starter-generator from the electric power of outside.
Summary of the invention
The present invention completes in view of the above-mentioned problems, its object is to, starting drive and the starting method of electricity generation system are provided, this starting drive and starting method also use the electric power accumulated reliably to start pump (force feed makes the pump etc. of the working media of generator operation) by avoiding the electric power reverse flow conditions to generator, thus also can start or restart generating even without the electric power supply from outside.
In order to reach described object, the present invention sets forth following technical scheme.
That is, the starting drive of electricity generation system of the present invention, described electricity generation system possesses: evaporator, by thermal source, aqueous working media is evaporated and generates steam; Generator, utilizes the steam generated at described evaporator to generate electricity; Condenser, makes in the devaporation of described generator for generating electricity, and generates the aqueous working media being supplied to described evaporator; And pump, force feed turns to aqueous working media at described condenser, described electricity generation system makes described working media generate electricity with generator from evaporator via generator and condenser Returning evaporimeter, described starting drive has: electrical power storage portion, stores the electric power sent with described generator; Circuit, can supply from described electrical power storage portion the electric power stored towards described pump; And counterflow-preventing unit, arrange at the circuit linking described generator and described electrical power storage portion, prevent stored electric power from described electrical power storage portion towards described generator adverse current.
In addition, preferred described counterflow-preventing unit possesses: switch element, supply with the electric power blocked from described electrical power storage portion to described generator when ending, in conducting time can carry out the mode of the electric power supply from described generator to described pump or described electrical power storage portion, arrange at the circuit of the described generator of link and described electrical power storage portion and described pump; And control part, the difference of the magnitude of voltage of the electric power that the magnitude of voltage sent with described generator and described electrical power storage portion are accumulated become be less than set value time, switch element is set to conducting state.
In addition, preferred described counterflow-preventing unit is diode portions, and the electric power that described diode portions is blocked from described electrical power storage portion to generator supplies, and can carry out supplying from described generator to the electric power in described pump or described electrical power storage portion.
In addition, preferably have: converter unit, the alternating electromotive force sent with described generator is converted to direct current power; Electrical power storage portion, stores the direct current power changed by described converter unit; And inverter, the direct current power taken out from described electrical power storage portion is converted to the backward described pump supply of alternating electromotive force.
In addition, preferably possess: the 2nd switch element, arrange at the circuit propped up to described electrical power storage part from the circuit linking described generator and described pump; And control part, when the magnitude of voltage sent with described generator is less than the magnitude of voltage of the electric power that described electrical power storage portion accumulates, described 2nd switch element is set to cut-off state.
On the other hand, the starting method of electricity generation system, described electricity generation system possesses: evaporator, by thermal source, aqueous working media is evaporated and generates steam, generator, utilizes the steam generated at described evaporator to generate electricity, condenser, makes in the devaporation of described generator for generating electricity, and generates the aqueous working media being supplied to described evaporator, and pump, force feed turns to aqueous working media at described condenser, described electricity generation system makes described working media generate electricity with generator from evaporator via generator and condenser Returning evaporimeter, wherein, during the magnitude of voltage sent with described generator is less than set value with the difference of the magnitude of voltage storing the electric power that the electrical power storage portion of electric power that sends with described generator accumulates, accumulate a part for the electric power sent with described generator in advance, the electric power accumulated in advance described in preventing is towards while described generator adverse current, lead the electric power of this accumulation described pump and starter-generator.
According to starting drive and the starting method of electricity generation system of the present invention, by avoiding the electric power reverse flow conditions to generator also to use the electric power accumulated reliably to start pump (force feed makes the pump etc. of the working media of generator operation), thus also can start or restart generating even without the electric power supply from outside.
Accompanying drawing explanation
Fig. 1 (a) is the key diagram of the starting drive of the 1st execution mode, and (b) is the figure of the change in voltage illustrated in starting drive.
Fig. 2 (a) is the key diagram of the starting drive of the 2nd execution mode, and (b) is the figure of the change in voltage illustrated in starting drive.
Fig. 3 (a) is the key diagram of the starting drive of the 3rd execution mode, and (b) is the figure of the change in voltage illustrated in starting drive.
Fig. 4 (a) is the key diagram of the starting drive of the 4th execution mode, and (b) is the figure of the change in voltage illustrated in starting drive.
Fig. 5 (a) is the key diagram of the starting drive of the 5th execution mode, and (b) is the figure of the change in voltage illustrated in starting drive.
Embodiment
[the 1st execution mode]
Below, based on Fig. 1, the 1st execution mode of the starting drive 1 that the present invention relates to is described in detail.
First, the electricity generation system 2 possessing starting drive 1 of the 1st execution mode is described.
As shown in Fig. 1 (a), the electricity generation system 2 of the 1st execution mode generates electricity from the hot source recovery heat of the used heat of such as factory, underground heat or solar heat, and as the self independent of commercial electric power system (outside electric power supply system) power supplier unit and use.
This electricity generation system 2 possesses: evaporator 3, by thermal source (being warm water in legend), aqueous working media is evaporated and generates gasiform working media; Generator 4, utilizes the steam of the working media generated at this evaporator 3 to generate electricity; Condenser 5, makes to generate at this generator 4 the aqueous working media being supplied to evaporator 3 for the devaporation generated electricity; And pump 6, force feed turns to aqueous working media at condenser 5.These evaporators 3, generator 4, condenser 5 and pump 6, the circulation pipe arrangement 7 circulated by making working media connects, be configured to towards circulation pipe arrangement 7 direction transportation work medium and make working media by the sequential loop of evaporator 3, generator 4, condenser 5, pump 6 loop-like.
Therefore, in this electricity generation system 2, first in evaporator 3, and carry out heat exchange between the thermal source from the draining of factory, the warm water gushed out from underground or the warm water of heating with solar heat etc., generate the steam of working media from the liquid of working media.Then, from this evaporator 3 be delivered to the working media of generator 4 steam drive generator 4 generate electricity.Thereafter, steam is transported to condenser 5, in condenser 5 and between cooling water, carry out heat exchange, and the steam of working media reverts to liquid.The aqueous working media generated at condenser 5 is back to evaporator 3 by pump 6 force feed.
In addition, in electricity generation system 2 of the present invention, the electric power sent is supplied to other equipment etc., and a part for generation power is delivered to pump 6 also can operates.Specifically, be configured to: between this generator 4 and pump 6, configure the circuit (power feed line road) linking them, via this circuit, a part for the electric power sent with generator 4 is supplied to pump 6, this pump 6 is operated.
In this electricity generation system 2, the pump 6 that the electric power that multiple use also can be had to send operates, specifically this pump 6 also can comprise the aqueous working media of force feed pump (circulating pump), from outside, warm water etc. is supplied to the pump (warm water pump) of the evaporator 3 of electricity generation system 2, also has the pump (coolant pump) etc. of the condenser 5 cooling water being supplied to electricity generation system 2.In addition, complicating in order to avoid illustrating, in the various figures as representational pump among this multiple pump, the pump (circulating pump) of force feed working media being illustrated as pump 6.
Breakout Y set on the circuit linking this generator 4 and pump 6, is connected with towards the branched line of side, electrical power storage portion 8.
Starting drive 1 accumulates electric power during carrying out generating electricity, carry the electric power accumulated towards pump 6 when resetting generating, the circulations such as the working media needed for running of electricity generation system 2, warm water and cooling water can be made, the starting and generating in electricity generation system 2 can be carried out thus.
Specifically, this starting drive 1 have the electric power that storage generator 4 sends electrical power storage portion 8, the circuit of the electric power stored can be supplied from this electrical power storage portion 8 towards pump 6 and link the circuit in generator 4 and electrical power storage portion 8, be provided with counterflow-preventing unit 9 at this circuit (circuit in generator 4 to electrical power storage portion 8), counterflow-preventing unit 9 prevents electric power from electrical power storage portion 8 towards the adverse current of generator 4.
And then starting drive 1 has interchange is converted to the transducer 10 of direct current, direct current is converted to the inverter 11 of interchange.
As shown in Figure 1, the electrical power storage portion 8 being located at starting drive 1 is the batteries accumulating direct current power, and anode is connected with generator 4 and pump 6 via breakout Y, and minus earth.That is, the electric power stored is supplied to pump 6 via from electrical power storage portion 8 towards the circuit of pump 6.
The interchange sent with generator 4 is converted to the direct current of such as voltage about 280V by transducer 10, and this transducer 10 is being arranged from generator 4 to the outlet side of the wiring of breakout Y and generator 4.
Inverter 11 is the outlet side being located at electrical power storage portion 8 to the wiring of pump 6 from breakout Y and pump 6.Inverter 11 by from electrical power storage portion 8 direct current power and be converted to the electric power of such as about 60Hz, 200V again with the direct current power that transducer 10 is changed.
According to this formation, after converting the alternating electromotive force transducer 10 sent with generator 4 to direct current, again become the interchange of expectation with inverter 11, become the electric power of driving pump 6.In addition, after the alternating electromotive force transducer 10 sent with generator 4 is converted to direct current, electrical power storage portion 8 is delivered to via breakout Y.Then, when restarting generator 4, the electric power that electrical power storage portion 8 accumulates is supplied to pump 6.
Here, when starting electricity generation system, if accumulated electric power is delivered to generator 4, then generator 4 carries out the action that works as motor, therefore, produces the electric power specially accumulated and is consumed by generator 4 that this is bad.
Therefore, starting drive 1 of the present invention is provided with counterflow-preventing unit, and this counterflow-preventing unit prevents electric power stored as described above to be consumed towards generator 4 adverse current, in other words stored electric power at generator 4.
The counterflow-preventing unit 9 of present embodiment possesses: switch element 15, with can block when ending from electrical power storage portion 8 to the supply of the electric power of generator 4, in conducting time can carry out the mode of the electric power supply from generator 4 to pump 6 or electrical power storage portion 8, connect generator 4 and electrical power storage portion 8 and pump 6; And control part 16, the difference of the magnitude of voltage of the electric power that the magnitude of voltage sent with generator 4 and electrical power storage portion 8 are accumulated become be less than set value time, switch element 15 is set to conducting state.
And then, counterflow-preventing unit 9 possesses the 1st voltage measuring unit for measuring 17 of the magnitude of voltage that mensuration generator 4 sends, and measuring the 2nd voltage measuring unit for measuring 18 of the magnitude of voltage of electric power that electrical power storage portion 8 accumulates, control part 16 controls based on the magnitude of voltage measured by these the 1st voltage measuring unit for measuring 17 and the 2nd voltage measuring unit for measuring 18.
Then, using Fig. 1 (a), being described in detail to forming the switch element 15 of counterflow-preventing unit 9, the 1st voltage measuring unit for measuring 17, the 2nd voltage measuring unit for measuring 18 and control part 16.
Switch element 15 is made up of the relay that can carry out conduction and cut-off switching according to the control signal from control part 16, is located at from generator 4 towards the wiring of breakout Y.In addition, in the wiring of breakout Y, be not only provided with switch element 15 from this generator 4, be also provided with the 1st voltage measuring unit for measuring 17.
1st voltage measuring unit for measuring 17 is potentiometers of the voltage of the electric power that measurement generator 4 sends.1st voltage measuring unit for measuring 17 on from generator 4 towards the wiring of breakout Y, is configured between above-mentioned transducer 10 and breakout Y.Therefore, the magnitude of voltage measured by the 1st voltage measuring unit for measuring 17 is the voltage of the direct current power after being changed by transducer 10 with the alternating electromotive force that generator 4 sends.Like this, control part 16 is delivered to the magnitude of voltage that the 1st voltage measuring unit for measuring 17 measures.
On the other hand, the 2nd voltage measuring unit for measuring 18 is provided with being located at the wiring between breakout Y and electrical power storage portion 8.2nd voltage measuring unit for measuring 18 and the same magnitude of voltage measuring direct current of the 1st voltage measuring unit for measuring 17, measuring the magnitude of voltage of the electric power that electrical power storage portion 8 accumulates, is in other words the magnitude of voltage of the direct current being supplied to inverter 11 (pump 6 side) from electrical power storage portion 8.Like this, control part 16 is sent to the magnitude of voltage of the 2nd voltage measuring unit for measuring 18 mensuration is also same with the 1st voltage measuring unit for measuring 17.
Control part 16 is made up of PLC, sequencer etc., based on sending with generator 4 and being converted to the difference of the magnitude of voltage of the electric power that the magnitude of voltage after direct current and electrical power storage portion 8 accumulate, switches the conduction and cut-off of control switch unit 15 freely.
Specifically, be transfused to this control part 16 with the magnitude of voltage that the 1st voltage measuring unit for measuring 17 and the 2nd voltage measuring unit for measuring 18 measure, calculate the difference of the voltage deducting the magnitude of voltage measured by the 1st voltage measuring unit for measuring 17 from the magnitude of voltage measured by the 2nd voltage measuring unit for measuring 18.Then, in control part 16, the difference of calculated voltage become be less than predetermined set value time, switch element 15 is set to conducting state, in other words the electric power sent with generator 4 is supplied to pump 6 side.
In addition, go out side at inverter 11, be connected with electrical load (external loading) at the power circuit from starting drive 1 branch via switch 27.To this power circuit, such as, while switch element 15 becomes conducting or make switch 27 conducting after a while, the electric power sent with generator 4 is supplied to electrical load side.
Then, the signal transacting at this control part 16 is described, i.e. the starting method of electricity generation system 2 of the present invention.
First, consider that generator 4 is in the situation exporting the such operating condition of sufficient electric power.
In this operating condition, the control signal switch element 15 according to transmitting from control part 16 becomes conducting.Therefore, the electric power of generator 4 is delivered to pump 6 via transducer 10 and inverter 11 and for the running of pump 6.In addition, after the alternating electromotive force transducer 10 sent is converted to direct current, dump power is transported to electrical power storage portion 8 and is accumulated by this electrical power storage portion 8.
Then, if generator 4 stops because of certain reason (such as making regular check on).
When generator 4 stops, switch element 15 is set to cut-off by the control signal according to transmitting from control part 16, and generator 4 and electrical power storage portion 8 become notconnect state.
Thereafter, the situation restarting generator 4 is considered.
As shown in Fig. 1 (b), when restarting generator 4, use the electric power that electrical power storage portion 8 accumulates.That is, the electric power that electrical power storage portion 8 accumulates is supplied to pump 6 via breakout Y, starts generating gradually by priming pump 6.
Now, cut-off is set as at the switch 27 arranged to the power circuit of electrical load side branch.
Like this, when electricity generation system 2 is started, the flow of power sent with generator 4, to transducer 10, measures the output voltage of this transducer 10 by the 1st voltage measuring unit for measuring 17.With the 1st voltage measuring unit for measuring 17 measure magnitude of voltage along with generating quantitative change become greatly and gradually large.On the other hand, the power consumption of accumulating in electrical power storage portion 8 is in the running of pump 6, and the thus voltage drop in electrical power storage portion 8, also declines gradually with the magnitude of voltage that the 2nd voltage measuring unit for measuring 18 measures.
Then, the difference of the magnitude of voltage measured by two voltage measuring unit for measuring 17,18 becomes predetermined set value, such as, become equal in fact (roughly equal) with the magnitude of voltage measured by the 2nd voltage measuring unit for measuring 18 with the magnitude of voltage that the 1st voltage measuring unit for measuring 17 measures.Like this when the difference of magnitude of voltage becomes predetermined set value, switch element 15 is switched to conducting from cut-off by control part 16.Then, after the conducting of this switch element 15, the electric power sent with generator 4 also flows into electrical power storage portion 8 via breakout Y, is thus again accumulated the electric power started by electrical power storage portion 8.
Like this, if switch element 15 is set to conducting after the value that magnitude of voltage and the magnitude of voltage of the 2nd voltage measuring unit for measuring 18 of the 1st voltage measuring unit for measuring 17 become roughly the same, then the danger that the equipment such as transducer 10, inverter 11 and electrical power storage portion 8 applies larger change in voltage is disappeared, thus the surge (shock) when can relax the startup that these equipment are applied.
In addition, until roughly become zero by the difference of the magnitude of voltage of two voltage measuring unit for measuring 17,18 mensuration, switch element 15 is in cut-off, thus the electric power accumulated of electrical power storage portion 8 can not adverse current to generator 4, generator 4 reliably can be avoided to rotate as motor and consumes the electric power accumulated this is bad.
Namely, according to starting drive 1 and the starting method of electricity generation system 2 of the present embodiment, by avoiding the electric power reverse flow conditions to generator 4 also to use the electric power accumulated reliably to start pump 6, can just not start from the electric power supply of outside or restart generating.
[the 2nd execution mode]
Then, the starting drive of the 2nd execution mode is described.
As shown in Fig. 2 (a), the starting drive 1 of the 2nd execution mode replaces the switch element 15 of the 1st execution mode and has diode portions 19 (unidirectional current passes through unit).This diode portions 19 can be blocked from electrical power storage portion 8 to the supply of the electric power of generator 4 and can be carried out from electrical power storage portion 8 to the supply of the electric power of pump 6, and can carry out supplying from generator 4 to the electric power in electrical power storage portion 8.
The power semiconductor that the while that diode portions 19 being flowed from generator 4 towards breakout Y (forward) by allowable current, energy Limited Current flows towards generator 4 side reverse (oppositely) is formed.This diode portions 19 is same with the switch element 15 of the 1st execution mode, also on from generator 4 towards the wiring of breakout Y, arranges to obtain side farther downstream than transducer 10.About diode portions 19, in the mode enabling the electric power of self generator 4 to pass through, the anode of this diode portions 19 is connected with the outlet side of generator 4, negative electrode is connected with pump 6 side.
Therefore, in diode portions 19, when the voltage in the voltage ratio electrical power storage portion 8 of generator 4 is high, electric current moves from generator 4 towards side, electrical power storage portion 8 and pump 6 effluent and supplies electric power, even and if the voltage in the voltage ratio electrical power storage portion 8 of generator 4 is low, there is not the electric power adverse current to generator 4 from electrical power storage portion 8 yet.
In addition, to the starting drive 1 of the 2nd execution mode, go out side also at inverter 11, be connected with electrical load (external loading) at the power circuit from starting drive branch via switch 27.To this power circuit, such as after the voltage of generation power of generator 4 and the voltage in electrical power storage portion 8 that are converted to direct current power with transducer 10 become same potential, switch 27 is set to conducting, the electric power sent with generator 4 is supplied to electrical load side.Such as, can form by following some modes etc.: the voltage detecting the electrical power storage portion 8 declined with starter-generator 4 transfers increase to, thus switch 27 is set to conducting; Or, the voltage of the generation power of the generator 4 of the anode-side of the diode portions 19 of direct current power and the voltage in electrical power storage portion 8 (cathode side) is converted to respectively with voltage measuring unit for measuring mensuration transducer 10, compare two voltages and after judgement two voltages become same potential, switch 27 be set to conducting; Or, detect electric current via diode portions 19 to forward (from generator 4 to pump 6 side) flow out after switch 27 is set to conducting.
Then, the starting method of the electricity generation system 2 of the 2nd execution mode is described.
First, when generator 4 is in operating condition, the electric power sent is delivered to pump 6 via transducer 10 → inverter 11 and is used for the running of pump 6 with generator 4.In addition, be transported to electrical power storage portion 8 after the dump power transducer 10 of the alternating electromotive force sent is converted to direct current and accumulated by this electrical power storage portion 8.
Then, if generator 4 stops because of certain reason (such as making regular check on).
When generator 4 stops, not carrying out generating electricity thus the voltage drop of generator 4 (anode-side of diode portions 19).But the voltage in electrical power storage portion 8 is owing to keeping higher for electric power storage state.Namely usual electric current should be flow from the electrical power storage portion 8 that voltage is high towards the generator 4 that voltage is low, but owing to being provided with diode portions 19 as counterflow-preventing unit 9 at the starting drive 1 of present embodiment, so electric current does not flow from the side, electrical power storage portion 8 that voltage is high towards generator 4 when the startup of generator 4, generator 4 and electrical power storage portion 8 become notconnect state in fact.
Thereafter, generator 4 is restarted.
That is, as shown in Fig. 2 (b), when restarting generator 4, the electric power that electrical power storage portion 8 accumulates is used.That is, the electric power that electrical power storage portion 8 accumulates is supplied to pump 6, is started by pump 6 and start generating gradually.
Now, cut-off is set as at the switch 27 arranged to the power circuit of electrical load side branch.
Like this, when electricity generation system 2 is started, the voltage of generator 4 rises gradually due to sent electric power.On the other hand, in electrical power storage portion 8 because the power feed line road of accumulated electric power via pump 6 is carried and is consumed in the running of pump 6, so the voltage in electrical power storage portion 8 declines gradually.
Then, when the voltage of the side, voltage ratio electrical power storage portion 8 of generator 4 side of diode portions 19 is higher in fact, electric current flows (supply electric power) from generator 4 towards electrical power storage portion 8 via diode portions 19, is again accumulated the electric power started by electrical power storage portion 8.
If arrange the diode portions 19 of blocking from electrical power storage portion 8 to the supply of the electric power of generator 4 like this, then when starter-generator 4, when the voltage of the voltage ratio generator 4 in electrical power storage portion 8 is high, electric current no longer moves to generator 4 effluent via diode portions 19.Then, voltage due to electrical power storage portion 8 is roughly the same with the voltage of generator 4 or change low rear electric power and be supplied to the equipment such as transducer 10, inverter 11 and electrical power storage portion 8, so the danger applying larger change in voltage when starting these equipment disappears, thus surge when can relax the startup putting on these equipment.
In addition, as described above, during the voltage of the voltage ratio generator 4 in electrical power storage portion 8 is high, electric current is limited by the flowing of diode portions 19 towards generator 4.Therefore, the electric power adverse current not having electrical power storage portion 8 to accumulate, to generator 4, can reliably avoid generator 4 to rotate as motor and consumes the electric power accumulated this is bad.
Therefore, in the starting drive 1 and starting method of electricity generation system 2 of the second embodiment, same with the situation of the 1st execution mode, also by avoiding the electric power reverse flow conditions to generator 4 also to use the electric power accumulated reliably to start pump 6, the electric power supply not from outside just can start or restart generating.In addition, because diode portions 19 automatically can carry out above-mentioned action (control without expressing), so can not need the control part 16 in the 1st execution mode.
[the 3rd execution mode]
Then, the starting drive of the 3rd execution mode is described.
As shown in Fig. 3 (a), the starting drive 1 of the 3rd execution mode has switch element 15, the 1st voltage measuring unit for measuring 17, the 2nd voltage measuring unit for measuring 18, inverter 20, transducer 21, control part 16 in a same manner as in the first embodiment, but different from the 1st execution mode, the transducer 23 had respectively for electrical power storage portion 8 is different with inverter 22 this point.
Specifically, in the starting drive 1 of the 3rd execution mode, in a same manner as in the first embodiment, between switch element 15 and pump 6, (downstream of switch element 15) has inverter 20, on the branched line of the lines branch of the outlet side from this inverter 20, be provided with inverter 22, transducer 23, electrical power storage portion 8.
In addition, below, claim from generator 4 towards the circuit of pump 6 arrange inverter 20 and transducer 21 be " the 1st inverter 20 " and " the 1st transducer 21 ", claiming at the inverter 22 arranged towards the branched line in electrical power storage portion 8 and transducer 23 is " the 2nd inverter 22 " and " the 2nd transducer 23 ", is illustrated distinctively.
Specifically, as shown in Fig. 3 (a), arrange the circuit of the lines branch of the outlet side from the 1st inverter 20, this circuit is connected with the anode in electrical power storage portion 8 via the 2nd switch element the 24 → 2nd transducer the 23 → 2nd voltage measuring unit for measuring 18.The minus earth in electrical power storage portion 8.The alternating electromotive force of about 60Hz, 200V is converted to direct current power by the 2nd transducer 23.
In addition, the connection of the outlet side of anode via the 2nd voltage measuring unit for measuring the 18 → 2nd inverter the 22 → 3rd switch element 25 with the 1st inverter 20 in electrical power storage portion 8.2nd inverter 22 by from electrical power storage portion 8 direct current power and be converted to the electric power of about 60Hz, 200V again with the direct current power that the 1st transducer 21 is changed.In other words, the 2nd above-mentioned transducer 23 is in parallel with the 2nd inverter 22 to be configured.
In addition, about inverter 11 go out side to be connected with via switch 27 electrical load (external loading) in and the control of switch 27, due to identical with above-mentioned execution mode, so the description thereof will be omitted.
Then, the starting method of the electricity generation system 2 of the 3rd execution mode is described.
First, when generator 4 be in export sufficient electric power such operating condition, the electric power sent with generator 4 is delivered to pump 6 via the 1st transducer 21 and the 1st inverter 20 and for the running of pump 6.In this condition, the 2nd switch element 24 is set to conducting, the 3rd switch element 25 is set to cut-off.By making the 2nd switch element 24 and the 3rd switch element 25 be in this state, thus after sent alternating electromotive force is converted to direct current with the 2nd transducer 23, dump power is accumulated by electrical power storage portion 8.
Then, if generator 4 stops because of certain reason (such as making regular check on).
When generator 4 stops, the control signal switch element 15 according to transmitting from control part 16 is set as cut-off, and generator 4 and electrical power storage portion 8 become notconnect state.
Thereafter, the situation restarting generator 4 is considered.
As shown in Fig. 3 (b), when restarting generator 4, use the electric power that electrical power storage portion 8 accumulates.Namely by the 2nd switch element 24 being set to cut-off, the 3rd switch element 25 being set to conducting, thus the electric power accumulated in electrical power storage portion 8 is supplied to pump 6 via the 2nd voltage measuring unit for measuring the 18 → 2nd inverter the 22 → 3rd switch element 25, start generating gradually by priming pump 6.
Now, cut-off is set as at the switch 27 arranged to the power circuit of electrical load side branch.
Like this, when electricity generation system 2 is started, the electric power sent with generator 4 is measured as the magnitude of voltage measured by the 1st voltage measuring unit for measuring 17 via the 1st transducer 21, becomes large gradually with the magnitude of voltage that the 1st voltage measuring unit for measuring 17 measures.On the other hand, in electrical power storage portion 8 because accumulated power consumption is in the running of pump 6, so decline gradually with the magnitude of voltage that the 2nd voltage measuring unit for measuring 18 measures.
Then, the difference of the magnitude of voltage measured by two voltage measuring unit for measuring becomes predetermined set value, such as become equal in fact (roughly equal) with the magnitude of voltage measured by the 2nd voltage measuring unit for measuring 18 with the magnitude of voltage that the 1st voltage measuring unit for measuring 17 measures, like this, when the difference of magnitude of voltage becomes predetermined set value, switch element 15 is set to conducting by control part 16.In addition, the 2nd switch element 24 is set to conducting, the 3rd switch element 25 is set to cut-off.After the conducting of switch element 15 and the 2nd switch element 24, because the electric power sent with generator 4 also flows into electrical power storage portion 8, so again accumulated the electric power started by electrical power storage portion 8.
In addition, because the action effect of the 3rd execution mode is roughly the same with the 1st execution mode, so omit its detailed description.
[the 4th execution mode]
Then, the starting drive 1 of the 4th execution mode is described.
As shown in Fig. 4 (a), the starting drive 1 of the 4th execution mode has inverter 20, transducer 21, diode portions 19 in a same manner as in the second embodiment, but different from the 2nd execution mode, the transducer 23 had respectively for electrical power storage portion 8 is different with inverter 22 this point.
Specifically, in the starting drive 1 of the 4th execution mode, in a same manner as in the second embodiment, between diode portions 19 and pump 6, (downstream of diode portions 19) has inverter 21, is provided with inverter 22, transducer 23, electrical power storage portion 8 at the branched line of the lines branch of the outlet side from this inverter 21.
In addition, hereinafter referred to as from generator 4 towards the wiring of pump 6 arrange inverter 20 and transducer 21 be " the 1st inverter 20 " and " the 1st transducer 21 ", claiming at the inverter 22 arranged towards branch's wiring in electrical power storage portion 8 and transducer 23 is " the 2nd inverter 22 " and " the 2nd transducer 23 ", is illustrated distinctively.
Specifically, as shown in Fig. 4 (a), be connected with the anode in electrical power storage portion 8 from the circuit of the lines branch of the outlet side of the 1st inverter 20 via the 2nd switch element the 24 → 2nd transducer the 23 → 2nd voltage measuring unit for measuring 18.The minus earth in electrical power storage portion 8.The alternating electromotive force of about 60Hz, 200V is converted to direct current power by the 2nd transducer 23.
In addition, the connection of the outlet side of anode via the 2nd voltage measuring unit for measuring the 18 → 2nd inverter the 22 → 3rd switch element 25 with the 1st inverter 20 in electrical power storage portion 8.2nd inverter 22 by from electrical power storage portion 8 direct current power and be converted to the electric power of about 60Hz, 200V again with the direct current power that the 1st transducer 21 is changed.The 2nd above-mentioned transducer 23 is in parallel with the 2nd inverter 22 to be configured.
In addition, about inverter 11 go out side to be connected with via switch 27 electrical load (external loading) in and the control of switch 27, due to identical with above-mentioned execution mode, therefore the description thereof will be omitted.
Then, the starting method of the electricity generation system 2 of the 4th execution mode is described.
First, when generator 4 be in export sufficient electric power such operating condition, the electric power sent with generator 4 is delivered to pump 6 via the 1st transducer 21 → diode portions the 19 → 1st inverter 20 and for the running of pump 6.In this condition, the signal the 2nd switch element 24 being set to conducting, the 3rd switch element 25 being set to cut-off is exported from control part 16.By setting the 2nd switch element 24 and the 3rd switch element 25 like this, thus after sent alternating electromotive force is converted to direct current with the 2nd transducer 23, dump power is accumulated by electrical power storage portion 8.
Then, consider to stop generator 4 because of certain reason (such as making regular check on) and to restart thereafter the situation of generator 4.
As shown in Fig. 4 (b), when restarting generator 4, use the electric power that electrical power storage portion 8 accumulates.Namely, by exporting the signal the 2nd switch element 24 being set to cut-off, the 3rd switch element 25 being set to conducting from control part 16, thus the electric power that electrical power storage portion 8 accumulates flow to pump 6 via the 2nd voltage measuring unit for measuring the 18 → 2nd inverter 22, start generating gradually by priming pump 6.
Now, cut-off is set as at the switch 27 arranged to the power circuit of electrical load side branch.
Like this, during starting-generating system 2, the voltage of generator 4 rises gradually due to sent electric power.On the other hand, in electrical power storage portion 8 because accumulated power consumption is in the running of pump 6, so the voltage in electrical power storage portion 8 declines gradually.
Then, when the voltage of the side, voltage ratio electrical power storage portion 8 of generator 4 side of diode portions 19 is higher in fact, electric current flows (supply electric power) via diode portions 19 from generator 4 towards electrical power storage portion 8.When becoming this state, again export the signal the 2nd switch element 24 being set to conducting, the 3rd switch element 25 being set to cut-off from control part 16.By the 2nd switch element 24 and the 3rd switch element 25 are set to this state, thus after the dump power of sent alternating electromotive force is converted to direct current power with the 2nd transducer 23, again accumulated by electrical power storage portion 8.
The action effect of the 4th execution mode other than the above is roughly the same with the 2nd execution mode, thus omits its detailed description.
[the 5th execution mode]
Then, the starting drive 1 of the 5th execution mode is described.
As shown in Fig. 5 (a), the starting drive 1 of the 5th execution mode has the 4th switch element 26 between the breakout Y and the 2nd voltage measuring unit for measuring 18 of the 1st execution mode, and this point differs widely.In other formation, the 5th execution mode is identical with the 1st execution mode.
4th switch element 26 is controlled by control part 16, is usually set to conducting state, but when the magnitude of voltage measured by the 1st voltage measuring unit for measuring 17 is lower than the magnitude of voltage measured by the 2nd voltage measuring unit for measuring 18, is set as cut-off state.
When being provided with the 4th switch element 26 carrying out such work, such as, when electrical load changes significantly or when stopping electricity generation system 2, energy output declines, when becoming " magnitude of voltage of magnitude of voltage < the 2nd voltage measuring unit for measuring 18 of the 1st voltage measuring unit for measuring 17 ", 4th switch element 26 becomes cut-off, and electrical power storage portion 8 is disconnected by the outlet side from generator 4.
As shown in Fig. 5 (b), the electric power reverse flow conditions from electrical power storage portion 8 to generator 4 can be avoided by this disconnection, the voltage drop in electrical power storage portion 8 and the waste of charge capacity (electric power storage energy) can be prevented, the charge capacity in electrical power storage portion 8 required when can be kept at the restarting of electricity generation system 2 and voltage.In addition, as shown in Fig. 5 (b), when electrical power storage portion 8 does not disconnect from the outlet side of generator 4, particularly with the decline of the voltage of the efferent of electricity generation system 2, the voltage in electrical power storage portion 8 also declines, because of instead of preferably.
In addition, other operating states (method for restarting of electricity generation system 2) of the 5th execution mode, the action effect played are roughly the same with the 1st execution mode, thus omit the description.
In addition, should think, execution mode of disclosure is illustrate in all respects, instead of restrictive.Particularly, in execution mode of disclosure, not disclosed item expressly, the size, weight, volume etc. of such as operating condition or operating condition, various parameter, construct do not depart from the scope that those skilled in the art implement usually, as long as and adopt the value that those of ordinary skill in the art just can easily imagine.
Such as, as electricity generation system 2, there is binary electricity generation system although illustrate, be not limited thereto.Also can be used for carrying out with the internal combustion engine of Diesel engine etc. the engine-type generator that generates electricity.In this case, not pump 6, but control the revolution etc. of engine.
Claims (4)
1. a starting drive for electricity generation system, described electricity generation system possesses: evaporator, by thermal source, aqueous working media is evaporated and generates steam; Generator, utilizes the steam generated at described evaporator to generate electricity; Condenser, makes in the devaporation of described generator for generating electricity, and generates the aqueous working media being supplied to described evaporator; And pump, force feed turns to aqueous working media at described condenser, and described electricity generation system makes described working media generate electricity with generator from evaporator via generator and condenser Returning evaporimeter, wherein,
Described starting drive has:
Electrical power storage portion, stores the electric power sent with described generator;
Circuit, can supply from described electrical power storage portion the electric power stored towards described pump; And
Counterflow-preventing unit, arranges at the circuit linking described generator and described electrical power storage portion, prevents stored electric power from described electrical power storage portion towards described generator adverse current, wherein,
Described counterflow-preventing unit possesses:
Switch element, supply with the electric power blocked from described electrical power storage portion to described generator when ending, in conducting time can carry out the mode of the electric power supply from described generator to described pump or described electrical power storage portion, arrange at the circuit of the described generator of link and described electrical power storage portion and described pump; And
Control part, the difference of the magnitude of voltage of the electric power that the magnitude of voltage sent with described generator and described electrical power storage portion are accumulated become be less than set value time, switch element is set to conducting state.
2. the starting drive of electricity generation system according to claim 1, has:
Converter unit, is converted to direct current power by the alternating electromotive force sent with described generator;
Electrical power storage portion, stores the direct current power changed by described converter unit; And
Inverter, after the direct current power taken out is converted to alternating electromotive force, supplies to described pump from described electrical power storage portion.
3. the starting drive of electricity generation system according to claim 1, possesses:
2nd switch element, is arranged at the circuit propped up to described electrical power storage part from the circuit linking described generator and described pump; And
Control part, when the magnitude of voltage sent with described generator becomes the magnitude of voltage being less than the electric power that described electrical power storage portion accumulates, is set to cut-off state by described 2nd switch element.
4. a starting method for electricity generation system, described electricity generation system possesses: evaporator, by thermal source, aqueous working media is evaporated and generates steam; Generator, utilizes the steam generated at described evaporator to generate electricity; Condenser, makes in the devaporation of described generator for generating electricity, and generates the aqueous working media being supplied to described evaporator; And pump, force feed turns to aqueous working media at described condenser, described electricity generation system make described working media from evaporator via generator and condenser Returning evaporimeter generating electricity with generator, wherein,
By block when ending from electrical power storage portion to the supply of the electric power of described generator, in conducting time the switch element of electric power supply that can carry out from described generator to described pump or described electrical power storage portion be arranged on link described generator and described electrical power storage portion and described pump circuit
During the magnitude of voltage sent with described generator is less than set value with the difference of the magnitude of voltage storing the electric power that the electrical power storage portion of electric power that sends with described generator accumulates, described switch element is set to conducting state, a part for the electric power sent with described generator is accumulated in advance in described electrical power storage portion
The electric power accumulated in advance described in preventing is towards the electric power of this accumulation being led while described generator adverse current described pump and starter-generator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011079511A JP5822505B2 (en) | 2011-03-31 | 2011-03-31 | STARTING DEVICE AND STARTING METHOD FOR POWER GENERATION SYSTEM |
| JP2011-079511 | 2011-03-31 |
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| Publication Number | Publication Date |
|---|---|
| CN102739142A CN102739142A (en) | 2012-10-17 |
| CN102739142B true CN102739142B (en) | 2015-07-29 |
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| CN201210103727.3A Expired - Fee Related CN102739142B (en) | 2011-03-31 | 2012-03-30 | The starting drive of electricity generation system and starting method |
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| JP (1) | JP5822505B2 (en) |
| KR (1) | KR101345536B1 (en) |
| CN (1) | CN102739142B (en) |
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| JP2014171350A (en) * | 2013-03-05 | 2014-09-18 | Kobe Steel Ltd | Power generation device and power generation method |
| JP6421850B2 (en) * | 2016-09-20 | 2018-11-14 | ダイキン工業株式会社 | Hydropower system |
| CN114718792A (en) * | 2022-04-27 | 2022-07-08 | 西安德赛控制系统有限责任公司 | Starting integrated controller for realizing energy bidirectional flow and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773194A (en) * | 2004-10-29 | 2006-05-17 | 株式会社电装 | Refrigerating apparatus and fluid machine therefor |
| CN101027468A (en) * | 2002-11-13 | 2007-08-29 | 开利公司 | Combined rankine and vapor compression cycles |
| CN101726102A (en) * | 2010-01-28 | 2010-06-09 | 广东长菱空调冷气机制造有限公司 | Environment-friendly heat pump water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2959234B2 (en) * | 1991-09-18 | 1999-10-06 | 国産電機株式会社 | Operating method of AC generator for fuel injection type internal combustion engine |
| JP4996017B2 (en) * | 2001-06-13 | 2012-08-08 | 大阪瓦斯株式会社 | Received power adjustment device, private power generation device and control method thereof |
| JP4014583B2 (en) * | 2003-06-20 | 2007-11-28 | 株式会社デンソー | Fluid machinery |
| US7249459B2 (en) * | 2003-06-20 | 2007-07-31 | Denso Corporation | Fluid machine for converting heat energy into mechanical rotational force |
| JP2006329149A (en) * | 2005-05-30 | 2006-12-07 | Nippon Soken Inc | Heat transportation device and its control method |
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2011
- 2011-03-31 JP JP2011079511A patent/JP5822505B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101027468A (en) * | 2002-11-13 | 2007-08-29 | 开利公司 | Combined rankine and vapor compression cycles |
| CN1773194A (en) * | 2004-10-29 | 2006-05-17 | 株式会社电装 | Refrigerating apparatus and fluid machine therefor |
| CN101726102A (en) * | 2010-01-28 | 2010-06-09 | 广东长菱空调冷气机制造有限公司 | Environment-friendly heat pump water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101345536B1 (en) | 2013-12-26 |
| JP5822505B2 (en) | 2015-11-24 |
| CN102739142A (en) | 2012-10-17 |
| JP2012217239A (en) | 2012-11-08 |
| KR20120112009A (en) | 2012-10-11 |
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