CN107453390A - A kind of electricity generation system and electricity-generating method for power network power supply - Google Patents
A kind of electricity generation system and electricity-generating method for power network power supply Download PDFInfo
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- CN107453390A CN107453390A CN201610383780.1A CN201610383780A CN107453390A CN 107453390 A CN107453390 A CN 107453390A CN 201610383780 A CN201610383780 A CN 201610383780A CN 107453390 A CN107453390 A CN 107453390A
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- generating set
- controlling switch
- power
- energy storage
- storage subsystem
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
Abstract
The embodiments of the invention provide a kind of electricity generation system and electricity-generating method for power network power supply.Wherein, the electricity generation system includes：At least two generating sets in parallel, are electrically connected with power network；Energy storage subsystem, it is respectively provided with controlling switch between signal output part with each generating set, to control being turned on or off between the signal output part of energy storage subsystem and each generating set；And it is configured to：One controlling switch closes, and remaining controlling switch disconnects, and energy storage subsystem output compensation power is with the difference of the target output of the corresponding generating set of the controlling switch for compensating with currently closing and real output.As can be seen that the embodiment of the present invention can effectively extend the cooperation duration of energy storage subsystem and generating set, so as to greatly increase the utilization rate of energy storage subsystem, while the problem of easily being gone wrong when calculating multiple compensation power also reliably avoid.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of electricity generation system for power network power supply and generating
Method.
Background technology
As shown in figure 1, the existing electricity generation system for power network power supply generally includes：Energy storage subsystem 1 and
The generating set 2 in parallel with energy storage subsystem 1, energy storage subsystem 1 and generating set 2 can combine response
The dispatch command of power network, to realize the mutual supplement with each other's advantages of energy storage subsystem 1 and generating set 2, so as to be power network
More high-quality and efficient regulation service is provided.
In actual moving process, due to many reasons, the connection of energy storage subsystem 1 and generating set 2
It is often shorter to close operation duration.Above-mentioned reason is entered in case of generating set 2 is fired power generating unit below
Row explanation.
On the one hand, fired power generating unit is both needed to carry out full maintenance and maintenance every year, safeguards every time and maintenance needs two
Thoughtful six weeks, so, when fired power generating unit is being safeguarded and overhauled, fired power generating unit and energy storage subsystem
Both systems 1 obviously can not cooperation.
On the other hand, when some components in fired power generating unit, such as during the failure such as boiler or steam turbine, need
These components are repaired, and the time needed for the maintenance operation is general longer, is implementing maintenance operation
During, both fired power generating unit and energy storage subsystem 1 obviously also can not cooperations.
It will be apparent that above reason can cause to grow up during the cooperation of energy storage subsystem 1 and generating set 2
The earth shortens, and so, the utilization rate of energy storage subsystem 1 can also greatly reduce.Therefore, storage how is extended
The cooperation duration of energy subsystem 1 and generating set 2, and then the utilization rate for improving energy storage subsystem 1 is
One urgent problem to be solved.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of electricity generation system and electricity-generating method for power supply, to extend
The cooperation duration of energy storage subsystem and generating set, so as to improve the utilization rate of energy storage subsystem.
On the one hand, the embodiments of the invention provide a kind of electricity generation system for power network power supply, including：
At least two generating sets in parallel, are electrically connected with the power network；
Energy storage subsystem, it is respectively provided with controlling switch between signal output part with each generating set, with control
Make being turned on or off between the signal output part of the energy storage subsystem and each generating set；And configure
Into：
The one controlling switch closure, remaining described controlling switch are disconnected, and the energy storage subsystem output is mended
The target output work of the corresponding generating set of power is repaid to compensate with currently close the controlling switch
The difference of rate and real output.
Alternatively, above-mentioned electricity generation system also includes：
First detecting element, quantity is identical with the generating set, and is respectively used to detect each generator
Whether group is in automatic generation amount control AGC running statuses；
Second detecting element, quantity is identical with the controlling switch, and is respectively used to detect each control and opens
The current state of pass；
Control element, based on default compensation order priority, from being currently at the AGC running statuses
Compensation order priority highest generating set is chosen in each generating set as target genset, and
Detect that the controlling switch corresponding with the target genset is in disconnected in second detecting element
During open state, the control controlling switch closure corresponding with the target genset.
Alternatively, above-mentioned electricity generation system also includes：
Data processing unit, quantity is identical with the generating set, and is respectively used to obtain each generator
The real output of group and the power in the controlling switch downstream corresponding with the generating set, and it is right
The real output and the power in the controlling switch downstream got is summed, to be summed
As a result；
Data transmission unit, the electricity is uploaded to for obtaining the summed result, and by the summed result
Net, so that the power network is assessed the compensation effect of the energy storage subsystem.
Alternatively, in above-mentioned electricity generation system, the data transmission unit is telemechanical apparatus.
Alternatively, in above-mentioned electricity generation system, the generating set is thermal power generation unit, wind power generating set
Or nuclear energy power generation unit.
On the other hand, the embodiment of the present invention additionally provides a kind of electricity-generating method, applied to the hair powered for power network
Electric system, the electricity generation system include：At least two generating sets in parallel, are electrically connected with the power network；
Energy storage subsystem, it is respectively provided with controlling switch between signal output part with each generating set, to control
State being turned on or off between the signal output part of energy storage subsystem and each generating set；Methods described includes
Following steps：
S00, judge whether there is the power back-off condition for being directed to a generating set to expire under current working
Foot；If so, then entering step S10, otherwise each controlling switch keeps current state；
S10, using the generating set as target genset, and detect corresponding to the target genset
Whether the controlling switch is off；If so, then entering step S20, otherwise sent out with the target
The controlling switch keeps current state corresponding to group of motors；
S20, the controlling switch corresponding with the target genset closed, remaining described control is opened
Shut-off is opened, and the energy storage subsystem output compensation power is controlled, to compensate the target of the target genset
The difference of power output and real output.
Alternatively, in above-mentioned electricity-generating method, the step S00 includes：
S001, whether detection is current has generating set to be in automatic generation amount control AGC running statuses, if
It is that, then into step S002, otherwise each controlling switch keeps current state；
S002, based on default compensation order priority, from the generating for being currently at AGC running statuses
Compensation order priority highest generating set is chosen in unit, and determines the power back-off bar of the generating set
Part meets.
Alternatively, in above-mentioned electricity-generating method, step is also included after the step S20：
S30, the real output for obtaining each generating set respectively and corresponding with the generating set
The controlling switch downstream power, and the real output to getting and the controlling switch
The power in downstream is summed, to obtain summed result；
S40, the summed result is uploaded to the power network, so that the power network is to the energy storage subsystem
Compensation effect assessed.
Alternatively, in above-mentioned electricity-generating method, the generating set is thermal power generation unit, wind power generating set
Or nuclear energy power generation unit.
The embodiments of the invention provide a kind of electricity generation system and electricity-generating method for power network power supply.Wherein, the hair
Electric system includes：At least two generating sets in parallel, are electrically connected with power network；Energy storage subsystem, its with
Controlling switch is respectively provided between the signal output part of each generating set, to control energy storage subsystem and each generating set
Signal output part between be turned on or off；And it is configured to：One controlling switch closes, and remaining controlling switch is equal
Disconnect, energy storage subsystem output compensation power is with the corresponding generating set of the controlling switch for compensating with currently closing
Target output and real output difference.As can be seen that in the embodiment of the present invention, when a certain
When either some generating sets are needed to be serviced, overhaul or repaired, by being opened and closed shape to each controlling switch
The control of state, even a certain can be closed with controlling switch corresponding to the generating set of normal work, while make it
Remaining controlling switch disconnects, and then shutting down the generating set for needing to be serviced, overhauling or repairing can be right
It implements corresponding operating, meanwhile, energy storage subsystem can export compensation power being capable of normal work to compensate this
The target output of generating set and the difference of real output, i.e. energy storage subsystem can be with the energy
The generating set cooperation of enough normal works.Compared with prior art, the embodiment of the present invention can be effectively
Extend the cooperation duration of energy storage subsystem and generating set, so as to greatly increase energy storage subsystem
Utilization rate.Further, since energy storage subsystem is only possible to a generating set output compensation power every time, therefore
Energy storage subsystem only calculates the compensation power for the generating set, and is with the generating set cooperation
Can, energy storage subsystem is not required to calculate the compensation power for multiple generating sets, so can reliably avoid
The problem of easily being gone wrong when calculating multiple compensation power.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing
The required accompanying drawing used is briefly described in example or description of the prior art, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the electricity generation system for power network power supply that correlation technique provides；
Fig. 2 is the structural representation of the electricity generation system provided in an embodiment of the present invention for being power network power supply；
Fig. 3 is the flow chart of electricity-generating method provided in an embodiment of the present invention；
Fig. 4 is the particular flow sheet of step S00 in Fig. 3；
Fig. 5 is the another flow chart of electricity-generating method provided in an embodiment of the present invention.
In Fig. 1 all parts title and respective drawings mark between corresponding relation be：
1 energy storage subsystem；2 generating sets.
In Fig. 2 all parts title and respective drawings mark between corresponding relation be：
1 energy storage subsystem；2 generating sets；21 first generating sets；22 second generating sets；3 controls
Switch；31 first controlling switches；32 second controlling switches；4 first measuring cells, 5 second measuring cells.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
In order to solve the problems, such as that prior art is present, the embodiments of the invention provide a kind of hair for power network power supply
Electric system and electricity-generating method.
A kind of electricity generation system for power network power supply provided first below the embodiment of the present invention is introduced.
Referring to Fig. 2, a kind of electricity generation system for power network power supply provided in an embodiment of the present invention is shown in figure
Structural representation.
As shown in Fig. 2 the electricity generation system includes：The generating set 2 in parallel of energy storage subsystem 1 and at least two.
Specifically, the quantity of generating set 2 can be two shown in Fig. 2, certainly, the quantity of generating set 2
It is not limited thereto, can be specifically determined according to actual conditions, the present embodiment does not do any restriction to this.
In the present embodiment, each generating set 2 electrically connects with power network, energy storage subsystem 1 and each generating set 2
Signal output part between be respectively provided with controlling switch 3, to control the signal of energy storage subsystem 1 and each generating set 2
Being turned on or off between output end, and be configured to：One controlling switch 3 closes, and remaining controlling switch 3 disconnects,
The output compensation power of energy storage subsystem 1 is with the corresponding generating set 2 of the controlling switch 3 for compensating with currently closing
The difference of target output and real output.
It will be appreciated by persons skilled in the art that power network can be according to the actual power demand of user to each generating
Unit 2 issues dispatch command, and the dispatch command is that power network wishes the performance number that each generating set 2 exports, i.e. mesh
Mark power output.Due to the effect of many factors, under many circumstances, such as generating set 2 is in certainly
During dynamic generated energy control AGC running statuses, generating set 2 will be unable to the dispatch command of preferably responsive electricity grid,
There can be certain deviation between the target output and real output of generating set 2.
As shown in Fig. 2 controlling switch 3 can be arranged at the signal output of energy storage subsystem 1 and each generating set 2
In connection cables between end.When a certain controlling switch 3 is off, then energy storage subsystem 1 is with being somebody's turn to do
It is off between the signal output part of generating set 2 corresponding to controlling switch 3, now energy storage subsystem
System 1 is without the output compensation power of generating set 2 corresponding to normal direction and the controlling switch 3.On the contrary, work as a certain control
System switch 3 is when be in closure state, then energy storage subsystem 1 and the generating set 2 corresponding to the controlling switch 3
It is in the conduction state between signal output part, now energy storage subsystem 1 can to the controlling switch 3 corresponding to
Generating set 2 output compensation power.Further, since each controlling switch 3 is configured as：One controlling switch 3
Closure, remaining controlling switch 3 disconnects, i.e., is logical interlock relation between each controlling switch 3, therefore, storage
Energy subsystem 1 is at most only possible to the output compensation power of generating set 2 every time.
Closed it should be noted that multiple controlling switches 3 are configured into a controlling switch 3, remaining controlling switch
3 specific implementations disconnected can have it is a variety of, such as manual control mode, mechanical drive mode or
Electric controling mode etc., this is all feasible.
It is described in detail with reference to the operation principle of Fig. 2 electricity generation systems provided the present embodiment.
As shown in Fig. 2 the quantity of generating set 2 can be two, i.e., the first generating set 21 and second generates electricity
Unit 22, correspondingly, the quantity of controlling switch 3 is also two, i.e. the first controlling switch 31 and the second control
Switch 32, also, the first generating set 21 is corresponding with the first controlling switch 31, the second generating set 22 and
Second controlling switch 32 is corresponding.Assuming that current first generating set 21 is needed to be serviced, overhauls or tieed up
Repair, then the second controlling switch 32 can be closed, correspondingly, the first controlling switch 31 will disconnect, then
First generating set 21 is shut down, so, operating personnel can be according to actual demand to the first generating set 21
Corresponding operating is carried out, meanwhile, energy storage subsystem 1 can export compensation power, to compensate the second generating set
22 target output and the difference of real output, i.e., now energy storage subsystem 1 can be with the second hair
The cooperation of group of motors 22.
Similarly, if current second generating set 22 is needed to be serviced, overhauls or repaired, can incite somebody to action
First controlling switch 32 closes, and correspondingly, the second controlling switch 32 will disconnect, then by the second generator
Group 22 is shut down, and so, operating personnel can carry out corresponding operating according to actual demand to the second generating set 22,
Meanwhile energy storage subsystem 1 can export compensation power, to compensate the target output work of the first generating set 21
The difference of rate and real output, i.e., now energy storage subsystem 1 can combine fortune with the first generating set 21
OK.
As can be seen that in the present embodiment, when a certain or some generating sets 2 need to be serviced, overhaul
Or during maintenance, by the control to each open and-shut mode of controlling switch 3, even a certain can be with normal work
Controlling switch 3 closes corresponding to generating set 2, while disconnects remaining controlling switch 3, then will need into
The generating set 2 that row is safeguarded, overhauls or repaired is shut down can implement corresponding operating to it, meanwhile, energy storage
Subsystem 1 can export compensation power to compensate the target output work for the generating set 2 that this is capable of normal work
The difference of rate and real output, i.e. energy storage subsystem 1 can be capable of the generating set 2 of normal work with this
Cooperation.
Compared with prior art, the present embodiment can effectively extend the connection of energy storage subsystem 1 and generating set 2
Operation duration is closed, so as to greatly increase the utilization rate of energy storage subsystem 1.Further, since energy storage subsystem
System 1 is each to be only possible to the output compensation power of generating set 2, therefore energy storage subsystem 1 is calculated for being somebody's turn to do
The compensation power of generating set 2, and be not required to count with the cooperation of generating set 2, energy storage subsystem 1
The compensation power for multiple generating sets 2 is calculated, when so can reliably avoid calculating multiple compensation power
The problem of easily going wrong.
In the present embodiment, the electricity generation system can also include：First detecting element, the second detecting element and control
Element processed.Wherein, the quantity of the first detecting element is identical with generating set 2, and is respectively used to detect each hair
Whether group of motors 2 is in automatic generation amount control AGC running statuses.The quantity of second detecting element and control
Switch 3 identical, and be respectively used to detect the current state of each controlling switch 3.Specifically, the first detecting element
It can be one-to-one relation between generating set 2, also may be used between the second detecting element and controlling switch 3
Think one-to-one relation.Control element can be based on default compensation order priority, from being currently at
Compensation order priority highest generating set 2 is chosen in each generating set 2 of AGC running statuses and is used as mesh
Generating set is marked, and detects that controlling switch 3 corresponding with target genset is in the second detecting element
During off-state, controlling switch 3 corresponding with target genset is controlled to close.
For each generating set 2, if it is currently at automatic generation amount control AGC running statuses,
The generating set 2 can perform machine according to the dispatch command for itself to automatically regulate its internal stove machine
The power generating value of structure, that is to say, that now the real output of the generating set 2 is that the generating set 2 is automatic
Power output after ground responsive electricity grid dispatch command.Due to the limitation of each side factor, many times, in AGC
Under running status, generating set 2 can not preferably responsive electricity grid dispatch command, now, if energy storage subsystem
System 1 can with the cooperation of generating set 2, with regard to that can refer to the scheduling of the preferably responsive electricity grid of generating set 2
Order.
In the present embodiment, it may be predetermined that the compensation order priority corresponding to each generating set 2, and
The compensation order priority order information is pre-stored in control element.Specifically, compensating order priority can
To be determined according to many factors, such as the regulation performance of each generating set 2 or set steady etc..Lift
Example for, when compensate order priority according to the regulation performance of generating set 2 to determine when, compensation can be made
It is proportionate between the regulation performance of order priority and generating set 2, i.e. the good generating set 2 of regulation performance
Corresponding compensation order priority is higher, and compensation order is preferential corresponding to the poorer generating set 2 of regulation performance
Level is lower.It is of course also possible to regulation performance and the set steady of each generating set 2 are considered to determine
Order priority is compensated, this is also feasible.
When it is implemented, if current each generating set 2 is not in AGC running statuses, energy storage subsystem 1
Without carrying out power back-off to any generating set 2, now the state of all controlling switches 3 keeps constant,
Energy storage subsystem 1 is in holding state.
If currently there is generating set 2 to be in AGC running statuses, there can be two kinds of situations.In the case of one kind,
The quantity of generating set 2 in AGC running statuses is one, it is obvious that this generating set 2 is exactly to locate
Order priority highest generating set 2 is compensated in the generating set 2 of AGC running statuses, can now be incited somebody to action
The generating set is as target genset.In another case, the generating set in AGC running statuses
2 quantity is at least two, at this moment can be based on default compensation order priority, is in from least two
Compensation order priority highest generating set 2 is determined in the generating set 2 of AGC running statuses, such as is adjusted
The best generating set 2 of performance, and using the generating set 2 as target genset.
After target genset is determined, control element can go to know that control is held corresponding to target genset
Close whether 3 be off.
When the controlling switch 3 corresponding to target genset is off, illustrate that energy storage subsystem 1 is worked as
It is preceding not with target genset cooperation, in order that the tune that target genset preferably responsive electricity grid issues
Degree instruction, control element can control controlling switch 3 corresponding with target genset to close, so,
Energy storage subsystem 1 will can export compensation power with target genset cooperation, i.e. energy storage subsystem 1,
To compensate the difference of the target output of target genset and real output, so, target generates electricity
Unit just being capable of dispatch command that preferably responsive electricity grid issues.
When the controlling switch 3 corresponding to target genset is in closure state, illustrate that energy storage subsystem 1 is worked as
It is preceding with target genset cooperation, now electricity generation system can keep controlling corresponding to target genset
The current state of system switch 3, so that target genset is capable of the dispatch command of responsive electricity grid as much as possible.
As can be seen that the present embodiment can reasonably, rapidly select target genset, and make energy storage sub
System 1 and target genset cooperation.
In above-described embodiment, the electricity generation system can also include：Data processing unit and data transmission unit.
Wherein, the quantity of data processing unit can be identical with generating set 2, and is respectively used to obtain each generator
The real output of group 2 and the power in controlling switch 3 downstream corresponding with the generating set 2, and it is right
The real output and the power in the downstream of controlling switch 3 got is summed, to obtain summed result.
Data transmission unit is used to obtain summed result, and summed result is uploaded into power network, so that power network is to energy storage
The compensation effect of subsystem 1 is assessed.For example, data transmission unit can be telemechanical apparatus.
Specifically, can be one-to-one relation between data processing unit and generating set 2.Such as Fig. 2 institutes
Show, each data processing unit can include：First measuring cell 4, the second measuring cell 5 and summator.
Wherein, the first measuring cell 4 can be arranged in the connection cables between generating set 2 and power network, to obtain
The real output of generating set 2, and the real output is sent to sum unit；Second measurement
Element 5 can be arranged at the downstream of each controlling switch 3, to obtain the power in the downstream of controlling switch 3, and should
The power in the downstream of controlling switch 3 is sent to summator；Two power that summator can be got to it
Summed, to obtain summed result, and the summed result is sent to data transmission unit, then, should
Its summed result obtained at each summator can be uploaded to power network by data transfer.Power network is receiving
To after each summed result, its summation that will can be obtained with the data processing unit corresponding to target genset
As a result compared with the dispatch command for being directed to target genset, if both are identical or relatively,
Then illustrate that the compensation effect of energy storage subsystem 1 is preferable, can preferably meet actual demand；If both differences
It is very remote, then illustrate that the compensation effect of energy storage subsystem 1 is poor, it is difficult to meet actual demand, now can be right
Energy storage subsystem 1 optimizes.
It should be noted that data processing unit and data transmission unit can also be the group in telemechanical apparatus
Part, so, the acquisition of summed result and the transmission of summed result just can finally only be realized by telemechanical apparatus,
So as to assess the compensation effect of energy storage subsystem 1.
To sum up, the electricity generation system that the present embodiment provides can effectively extend energy storage subsystem 1 and generating set 2
Cooperation duration, so as to greatly increase the utilization rate of energy storage subsystem 1, while can also be reliable
The problem of ground avoids easily going wrong when calculating multiple compensation power.
A kind of electricity-generating method provided below the embodiment of the present invention is introduced.
It should be noted that a kind of electricity-generating method that the embodiment of the present invention is provided can apply to supply for power network
The electricity generation system of electricity.As shown in Fig. 2 the electricity generation system can include：Energy storage subsystem 1 and at least two is simultaneously
The generating set 2 of connection.Wherein, each generating set 2 electrically connects with power network, energy storage subsystem 1 and each generating
Controlling switch 3 is respectively provided between the signal output part of unit 2, to control energy storage subsystem 1 and each generating set 2
Being turned on or off between signal output part.
Referring to Fig. 3, the flow chart of electricity-generating method provided in an embodiment of the present invention is shown in figure.As shown in figure 3,
This method may include steps of：
S00, judge whether there is the power back-off condition for being directed to a generating set to meet under current working；
If so, then enter step S10, otherwise into step S11.
In the present embodiment, the power back-off condition of each generating set can be with identical, also, the power back-off
The specific implementation of condition is various informative.For example, the power back-off condition of generating set can be：The hair
Group of motors is to control in each generating set of AGC running statuses to compensate order priority in automatic generation amount
Highest generating set.Correspondingly, as shown in figure 4, step S00 can include：
S001, whether detection is current has generating set to be in automatic generation amount control AGC running statuses, if
It is, then into step S002, otherwise, into step S003.
S002, based on default compensation order priority, from each generator for being currently at AGC running statuses
Compensation order priority highest generating set is chosen in group, and determines the power back-off condition of the generating set
Meet.
S003, each controlling switch keep current state.
It will be appreciated by persons skilled in the art that power network can be according to the power demand of user to each generating set
Dispatch command is issued, the dispatch command is the performance number that power network wishes each generating set output, i.e. target exports
Power.After each generating set receives dispatch command, generating set meeting basis is directed to the dispatch command of itself
To adjust the real output of itself, with the dispatch command of responsive electricity grid.But due to each side factor
Limitation, under certain situation, such as when generating set is in AGC running statuses, generating set can not basis
For the dispatch command of itself, the real output of itself is adjusted to target output.At this moment, may be used
So that based on default compensation order priority, it is suitable that compensation is chosen from the generating set in AGC running statuses
The generating set of sequence highest priority, and determine that the power back-off condition of the generating set meets, so, storage
Can subsystem be possible to the generating set cooperation so that the generating set is more responsive to power network
Dispatch command.
It should be noted that the power back-off condition of generating set is not limited to the above situation, actual conditions
It can be determined according to actual conditions, the present embodiment does not do any restriction to this.
S10, using the generating set as target genset, and detect and control corresponding to target genset
Whether switch is off, if so, then entering step S20, otherwise into step S21.
If detecting, controlling switch corresponding with target genset is off, and illustrates energy storage subsystem
System it is current not with target genset cooperation, in order that target genset is more responsive under power network
The dispatch command of hair, electricity generation system can perform follow-up S20, will be corresponding with target genset
Controlling switch closes, and so, energy storage subsystem will export compensation power, to compensate target genset
The difference of target output and real output, so, target genset just can be responded preferably
The dispatch command that responsive electricity grid issues.
If detecting, controlling switch corresponding with target genset is in closure state, illustrates energy storage subsystem
Currently with target genset cooperation, now generating set can keep corresponding to target genset
The current state of controlling switch, so that target genset is capable of the dispatch command of responsive electricity grid as much as possible.
It should be noted that the reality whether controlling switch corresponding to detection target genset is off
Existing mode is various, and specific implementation can determine according to actual conditions, and the present embodiment does not do any to this
Limit.
S11, each controlling switch keep current state.
If the power back-off condition of each generating set is unsatisfactory for, illustrate that current working can meets user's
Power demand, now energy storage subsystem to generating set without compensating, therefore electricity generation system is without to each control
Switch processed is handled, and makes each controlling switch keep current state.
S20, corresponding with target genset controlling switch closed, remaining controlling switch disconnects, and controls
Energy storage subsystem output compensation power processed, to compensate the target output of target genset and reality output
The difference of power.
It should be noted that electricity generation system closes controlling switch corresponding with target genset, remaining control
Make the specific implementation that switches off and exist a variety of, this is no longer going to repeat them for the present embodiment.
S21, controlling switch corresponding with target genset keep current state.
It is corresponding in the generating set when the power back-off condition of a certain generating set meets in the present embodiment
Controlling switch be off in the case of, electricity generation system will close the controlling switch, make simultaneously
Remaining controlling switch disconnects.So, energy storage subsystem will export compensation power, to compensate the generating set
Target output and real output difference, i.e. energy storage subsystem can combine fortune with the generating set
OK.At this moment, the generating set for needing to safeguard, overhaul or repair need to only be shut down, you can the needs are entered
The generating set that row is safeguarded, overhauls or repaired implements corresponding operating.Compared with prior art, the present embodiment
The cooperation duration of energy storage subsystem and generating set can effectively be extended, so as to greatly increase storage
The utilization rate of energy subsystem.Further, since during the controlling switch closure of target genset, remaining control is opened
Pass will be disconnected, i.e., energy storage subsystem is only possible to a generating set output compensation power every time, therefore energy storage
Subsystem only calculates the compensation power for target genset, and is with target genset cooperation
Can, energy storage subsystem is not required to calculate the compensation power for multiple generating sets, so can reliably avoid
The problem of easily being gone wrong when calculating multiple compensation power.
Referring to Fig. 5, the another flow chart of electricity-generating method provided in an embodiment of the present invention is shown in figure.Such as Fig. 5
Shown, this method includes：
S00, judge whether there is the power back-off condition for being directed to a generating set to meet under current working；
If so, then enter step S10, otherwise into step S11.
S10, using the generating set as target genset, and detect and control corresponding to target genset
Whether switch is off, if so, then entering step S20, otherwise into step S21.
S11, each controlling switch keep current state.
S20, corresponding with target genset controlling switch closed, remaining controlling switch disconnects, and controls
Energy storage subsystem output compensation power processed, to compensate the target output of target genset and reality output
The difference of power.
S21, controlling switch corresponding with target genset keep current state.
S30, the real output for obtaining each generating set respectively and the control corresponding with the generating set
The power of switch downstream processed, and the real output to getting and the power in controlling switch downstream are asked
With to obtain summed result.
S40, summed result is uploaded to power network, so that power network is commented the compensation effect of energy storage subsystem
Estimate.
When it is implemented, power network is after each summed result is received, it can will be with target genset institute
Corresponding summed result compared with the dispatch command for being directed to target genset, if both it is identical or
Relatively, then illustrate that the compensation effect of energy storage subsystem is preferable, can preferably meet actual demand；If
Both differ greatly, then illustrate that the compensation effect of energy storage subsystem is poor, it is difficult to meet actual demand, now
Energy storage subsystem can be optimized.
It should be noted that in above-described embodiment, generating set can be thermal power generation unit, wind-power electricity generation
Unit or nuclear energy power generation unit.Certainly, generating set can also be other kinds of generating set, specifically may be used
To be determined according to actual conditions, the present embodiment does not do any restriction to this.
To sum up, the electricity-generating method that the present embodiment provides can effectively extend energy storage subsystem and generating set
Cooperation duration, so as to greatly increase the utilization rate of energy storage subsystem, while can also reliably it keep away
The problem of exempting from easily to go wrong when calculating multiple compensation power.
It should be noted that herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these
Any this actual relation or order be present between entity or operation.Moreover, term " comprising ", " bag
Containing " or any other variant thereof is intended to cover non-exclusive inclusion, so that including a series of elements
Process, method, article or equipment not only include those key elements, but also including being not expressly set out
Other element, or also include for this process, method, article or the intrinsic key element of equipment.
In the case of more limiting, the key element that is limited by sentence "including a ...", it is not excluded that including
Other identical element also be present in the process of the key element, method, article or equipment.
Each embodiment in this specification is described by the way of related, identical phase between each embodiment
As part mutually referring to, what each embodiment stressed be it is different from other embodiment it
Place.For system embodiment, because it is substantially similar to embodiment of the method, so description
Fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the protection model of the present invention
Enclose.Any modification, equivalent substitution and improvements made within the spirit and principles of the invention etc., are wrapped
Containing within the scope of the present invention.
Claims (9)
- A kind of 1. electricity generation system for power network power supply, it is characterised in that including：At least two generating sets in parallel, are electrically connected with the power network；Energy storage subsystem, it is respectively provided with controlling switch between signal output part with each generating set, with control Make being turned on or off between the signal output part of the energy storage subsystem and each generating set；And configure Into：The one controlling switch closure, remaining described controlling switch are disconnected, and the energy storage subsystem output is mended The target output work of the corresponding generating set of power is repaid to compensate with currently close the controlling switch The difference of rate and real output.
- 2. electricity generation system as claimed in claim 1, it is characterised in that also include：First detecting element, quantity is identical with the generating set, and is respectively used to detect each generator Whether group is in automatic generation amount control AGC running statuses；Second detecting element, quantity is identical with the controlling switch, and is respectively used to detect each control and opens The current state of pass；Control element, based on default compensation order priority, from being currently at the AGC running statuses Compensation order priority highest generating set is chosen in each generating set as target genset, and Detect that the controlling switch corresponding with the target genset is in disconnected in second detecting element During open state, the control controlling switch closure corresponding with the target genset.
- 3. electricity generation system as claimed in claim 2, it is characterised in that also include：Data processing unit, quantity is identical with the generating set, and is respectively used to obtain each generator The real output of group and the power in the controlling switch downstream corresponding with the generating set, and it is right The real output and the power in the controlling switch downstream got is summed, to be summed As a result；Data transmission unit, the electricity is uploaded to for obtaining the summed result, and by the summed result Net, so that the power network is assessed the compensation effect of the energy storage subsystem.
- 4. electricity generation system as claimed in claim 3, it is characterised in that the data transmission unit is telemechanical Device.
- 5. such as the electricity generation system any one of claim 1-4, it is characterised in that the generating set For thermal power generation unit, wind power generating set or nuclear energy power generation unit.
- A kind of 6. electricity-generating method, it is characterised in that applied to the electricity generation system powered for power network, the hair Electric system includes：At least two generating sets in parallel, are electrically connected with the power network；Energy storage subsystem, It is respectively provided with controlling switch between signal output part with each generating set, to control the energy storage subsystem Being turned on or off between the signal output part of each generating set；Methods described comprises the following steps：S00, judge whether there is the power back-off condition for being directed to a generating set to expire under current working Foot；If so, then entering step S10, otherwise each controlling switch keeps current state；S10, using the generating set as target genset, and detect corresponding to the target genset Whether the controlling switch is off；If so, then entering step S20, otherwise sent out with the target The controlling switch keeps current state corresponding to group of motors；S20, the controlling switch corresponding with the target genset closed, remaining described control is opened Shut-off is opened, and the energy storage subsystem output compensation power is controlled, to compensate the target of the target genset The difference of power output and real output.
- 7. electricity-generating method as claimed in claim 6, it is characterised in that the step S00 includes：S001, whether detection is current has generating set to be in automatic generation amount control AGC running statuses, if It is that, then into step S002, otherwise each controlling switch keeps current state；S002, based on default compensation order priority, from the generating for being currently at AGC running statuses Compensation order priority highest generating set is chosen in unit, and determines the power back-off bar of the generating set Part meets.
- 8. electricity-generating method as claimed in claims 6 or 7, it is characterised in that also include after the step S20 Step：S30, the real output for obtaining each generating set respectively and corresponding with the generating set The controlling switch downstream power, and the real output to getting and the controlling switch The power in downstream is summed, to obtain summed result；S40, the summed result is uploaded to the power network, so that the power network is to the energy storage subsystem Compensation effect assessed.
- 9. the electricity-generating method as described in right wants 6 or 7, it is characterised in that the generating set is sent out for firepower Group of motors, wind power generating set or nuclear energy power generation unit.
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| CN108631369A (en) * | 2018-06-15 | 2018-10-09 | 北京艾路特储能技术有限公司 | Generator set control method and system |
| CN108631370A (en) * | 2018-06-15 | 2018-10-09 | 北京艾路特储能技术有限公司 | Generator set control method and system |
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Application publication date: 20171208 Assignee: Beijing Haibo Sichuang Technology Co.,Ltd. Assignor: RAY POWER SYSTEMS CO.,LTD. Contract record no.: X2022990000842 Denomination of invention: Power generation system and method for power grid Granted publication date: 20191115 License type: Common License Record date: 20221028 |