CN105552903B - A kind of method, apparatus and system for reducing Alloy White Iron - Google Patents
A kind of method, apparatus and system for reducing Alloy White Iron Download PDFInfo
- Publication number
- CN105552903B CN105552903B CN201610065901.8A CN201610065901A CN105552903B CN 105552903 B CN105552903 B CN 105552903B CN 201610065901 A CN201610065901 A CN 201610065901A CN 105552903 B CN105552903 B CN 105552903B
- Authority
- CN
- China
- Prior art keywords
- cyclization
- load
- power
- white iron
- interruptible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910001037 White iron Inorganic materials 0.000 title claims abstract description 141
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 141
- 239000000956 alloy Substances 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 329
- 238000004088 simulation Methods 0.000 claims description 48
- 240000002853 Nelumbo nucifera Species 0.000 claims description 11
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 11
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 7
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- 229960001484 edetic acid Drugs 0.000 claims description 3
- 108010001267 Protein Subunits Proteins 0.000 claims description 2
- 238000013459 approach Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
A kind of method for reducing Alloy White Iron, apparatus and system, obtain the first cyclization end of cyclization point and the load power at the second cyclization end, the expected load power at the first cyclization end and the expected load power at the second cyclization end during Alloy White Iron minimum are obtained according to pre-defined rule, adjust the access power of first interruptible load and/or the access power of second interruptible load, the cyclization point both ends are made to respectively reach the expected load power at the first cyclization end and the expected load power at the second cyclization end, so that Alloy White Iron reaches minimum, Loop Closing Operation is performed in the cyclization point.The active power on cyclization branch road is adjusted by adjusting the access power of the first interruptible load and/or the second interruptible load, so as to adjust the phase of cyclization point both end voltage difference, the poor size of cyclization point both end voltage can largely be adjusted so as to reduce Alloy White Iron, there is provided a kind of new approaches for reducing Alloy White Iron.
Description
Technical field
The present invention relates to for distribution technique field, and in particular to a kind of method, apparatus and system for reducing Alloy White Iron.
Background technology
At present, domestic power distribution network is typically using closed loop design, the power supply mode of open loop operation.In maintenance or failure, lead to
Cross conjunction, Open Loop Operation can realize the load that do not have a power failure down, so as to improve the reliability of power supply.But when performing Loop Closing Operation, because
The presence of both sides voltage difference is switched for cyclization, the circulation (i.e. cyclization steady-state current) for flowing through cyclization switch can be produced in power network,
And cyclization moment will also produce larger cyclization dash current, cyclization steady-state current and cyclization dash current (hereinafter referred to as cyclization
Electric current) it will all directly influence the safe and stable operation of power network.
Because voltage is vector, the size of cyclization point both end voltage difference by cyclization point both end voltage amplitude and phase decision
, the existing method for reducing Alloy White Iron, is by adjusting load tap changer, to adjust the width of the voltage difference at cyclization point both ends
Value, so as to reduce the size of cyclization point both end voltage difference；Or regulation reactive power compensator, to reduce the nothing at cyclization point both ends
The difference of work(power, so as to reduce the size of cyclization point both end voltage difference.
However, because voltage magnitude is related to the active power of power network, voltage-phase is related to the reactive power of power network, on
The scheme of regulation load tap changer and reactive power compensator is stated, only reactive power is adjusted, so as to be merely able to adjust
Save the amplitude of cyclization point both end voltage difference, it is impossible to the phase of cyclization point both end voltage difference is adjusted, therefore, pairing circling point both ends electricity
The regulation of the size of pressure difference has certain limitation, also has certain limitation hence for Alloy White Iron is reduced.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome can not adjust active power in the prior art, so as to right
The regulation of the size of cyclization point both end voltage difference has the defects of certain limitation, so as to provide a kind of reduction Alloy White Iron
Method, comprise the following steps：
Obtain the first cyclization end of cyclization point and the load power at the second cyclization end；First corresponding to the first cyclization end
The first interruptible load is connected with cyclization branch road, being connected with second on the second cyclization branch road corresponding to the second cyclization end can
Interruptible load, the load power at the first cyclization end include the access power of first interruptible load, and described second closes
The load power at ring end includes the access power of second interruptible load；
Expected load power and the second cyclization end according to the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum
Expected load power；
The access power of first interruptible load and/or the access power of second interruptible load are adjusted, is made
The cyclization point both ends respectively reach the expected load power at the first cyclization end and the expected load at the second cyclization end
Power, so that Alloy White Iron reaches minimum；
Loop Closing Operation is performed in the cyclization point.
Preferably, it is described according to pre-defined rule obtain Alloy White Iron minimum when the first cyclization end expected load power and
The expected load power at the second cyclization end, including simulation adjust first interruptible load and/or described second can interrupt it is negative
The access power of lotus, Loop Closing Operation is simulated, acquisition makes Alloy White Iron minimum, or described the when the Alloy White Iron is intended to minimum
One cyclization end and the load power at the second cyclization end.
Preferably, it is described according to pre-defined rule obtain Alloy White Iron minimum when the first cyclization end expected load power and
The step of expected load power at the second cyclization end, including：
Keep the access power of first interruptible load constant, progressively reducing described second with pre- fixed step size can interrupt
The access power of load, simulate Loop Closing Operation, record every time simulation Loop Closing Operation when Alloy White Iron value and described second can in
The access power of disconnected load；Until the access power of second interruptible load is reduced to zero；
Obtain the access power of second interruptible load when simulating Alloy White Iron value minimum；
The access power of second interruptible load when keeping simulating Alloy White Iron value minimum is constant, with pre- fixed step size
Progressively reduce the access power of first interruptible load, simulate Loop Closing Operation, record conjunction during simulation Loop Closing Operation every time
The access power of loop current value and first interruptible load；Until the access power of first interruptible load is reduced to
Zero；
Obtain the access power of first interruptible load when simulating Alloy White Iron value minimum；
According to simulation Alloy White Iron value minimum when first interruptible load access power and described second can in
The access power of disconnected load, the expected load power at the first cyclization end when calculating Alloy White Iron minimum and described second close
The expected load power at ring end.
Preferably, it is described according to pre-defined rule obtain Alloy White Iron minimum when the first cyclization end expected load power and
The step of expected load power at the second cyclization end, in addition to：
Judge in the first cyclization end and the second cyclization end that load power is one of larger；
Keep the load power at the less cyclization end of load power constant, it is larger that load power is progressively reduced with pre- fixed step size
Cyclization end interruptible load access power, simulate Loop Closing Operation, record every time simulation Loop Closing Operation when Alloy White Iron
The access power of interruptible load in value and the larger cyclization branch road of load；Until the larger cyclization branch road of the load on can in
The access power of disconnected load is reduced to zero；
It can be interrupted on the first cyclization branch road and the second cyclization branch road when obtaining simulation Alloy White Iron minimum negative
The access power of lotus.
Present invention also offers a kind of device for reducing Alloy White Iron, including：
First acquisition unit, for obtaining the first cyclization end of cyclization point and the load power at the second cyclization end；Described
The first interruptible load, the second cyclization corresponding to the second cyclization end are connected with corresponding to one cyclization end on first cyclization branch road
The second interruptible load is connected with branch road, the load power at the first cyclization end includes connecing for first interruptible load
Enter power, the load power at the second cyclization end includes the access power of second interruptible load；
Second acquisition unit, for the expected load according to the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum
Power and the expected load power at the second cyclization end；
Adjustment unit, for the access power for adjusting first interruptible load and/or second interruptible load
Access power, the cyclization point both ends is respectively reached the expected load power at the first cyclization end and second cyclization
The expected load power at end, so that Alloy White Iron reaches minimum；
Execution unit, for performing Loop Closing Operation in the cyclization point.
Preferably, it is described according to pre-defined rule obtain Alloy White Iron minimum when the first cyclization end expected load power and
The expected load power at the second cyclization end, including simulation adjust first interruptible load and/or described second can interrupt it is negative
The access power of lotus, Loop Closing Operation is simulated, acquisition makes Alloy White Iron minimum, or described the when the Alloy White Iron is intended to minimum
One cyclization end and the load power at the second cyclization end.
Preferably, the second acquisition unit, including：
First simulation subelement, for keeping the access power of first interruptible load constant, with pre- fixed step size by
Step reduces the access power of second interruptible load, simulates Loop Closing Operation, records cyclization during simulation Loop Closing Operation every time
The access power of current value and second interruptible load；Until the access power of second interruptible load is reduced to
Zero；
First obtains subelement, the access of second interruptible load when simulating Alloy White Iron value minimum for obtaining
Power；
Second simulation subelement, for keep simulate Alloy White Iron value minimum when second interruptible load access
Power is constant, progressively reduces the access power of first interruptible load with pre- fixed step size, simulates Loop Closing Operation, and record is each
The access power of Alloy White Iron value and first interruptible load during simulation Loop Closing Operation；Until described first can interrupt it is negative
The access power of lotus is reduced to zero；
Second obtains subelement, the access of first interruptible load when simulating Alloy White Iron value minimum for obtaining
Power；
First computation subunit, for the access according to first interruptible load during simulation Alloy White Iron value minimum
The access power of power and second interruptible load, the expectation at the first cyclization end when calculating Alloy White Iron minimum are born
Lotus power and the expected load power at the second cyclization end.
Preferably, the second acquisition unit, in addition to：
Judgment sub-unit, for judge that load power is larger in the first cyclization end and the second cyclization end one
Person；
3rd simulation subelement, for keeping the load power at the less cyclization end of load power constant, with pre- fixed step size
Progressively reduce the access power of the interruptible load at the larger cyclization end of load power, simulate Loop Closing Operation, record simulation every time
The access power of interruptible load on the larger cyclization branch road of Alloy White Iron value and load during Loop Closing Operation；Until the load
The access power of interruptible load is reduced to zero on larger cyclization branch road；
3rd obtains subelement, for obtaining the first cyclization branch road and described second when simulating Alloy White Iron minimum
The access power of interruptible load on cyclization branch road.
Present invention also offers a kind of system for reducing Alloy White Iron, including the first cyclization branch road at cyclization point both ends, the
Two cyclization branch roads, the first interruptible load is connected with the first cyclization branch road, is connected with the second cyclization branch road
Two interruptible loads；The system also includes：
Interruptable-Load Management system, for managing connecing for first interruptible load and/or the second interruptible load
Enter and cut off；
Cyclization controller, including any of the above-described described device, with the first cyclization branch road, the second cyclization branch road
Connected respectively with the Interruptable-Load Management system, first can by controlling described in the Interruptable-Load Management system call interception
The access power of the access power of interruptible load and/or second interruptible load.
Technical solution of the present invention, have the following advantages that：
1. the method provided by the invention for reducing Alloy White Iron, by the first cyclization end and the second cyclization that obtain cyclization point
The load power at end, according to the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum and the expected load at the second cyclization end
Power, the access power of the first interruptible load and/or the second interruptible load is adjusted to adjust the wattful power on cyclization branch road
Rate, so as to adjust cyclization point both end voltage difference phase, can largely adjust cyclization point both end voltage difference size from
And reduce Alloy White Iron, there is provided a kind of new approaches for reducing Alloy White Iron.
2. the method provided by the invention for reducing Alloy White Iron, the first interruptible load and/or second is adjusted by simulating
The access power of interruptible load, Loop Closing Operation is simulated, acquisition makes Alloy White Iron minimum, or when the Alloy White Iron is intended to minimum
The first cyclization end and the second cyclization end load power, to obtain the side of the expected load at the first cyclization end and the second cyclization end
Method, simple and easy to do, amount of calculation is small.
3. the method provided by the invention for reducing Alloy White Iron, by first keeping the access power of the first interruptible load not
Become, progressively reduce the access power of the second interruptible load with pre- fixed step size, simulate Loop Closing Operation, then keep simulating Alloy White Iron
The access power of the second interruptible load when being worth minimum is constant, progressively reduces the access of the first interruptible load with pre- fixed step size
Power, Loop Closing Operation is simulated, then obtain the first interruptible load and the second interruptible load during Alloy White Iron value minimum
The mode of access power, in the case of giving the load power relative size at unknown first cyclization end and the second cyclization end,
The acquisition modes of the expected load at the first cyclization end and the second cyclization end.
4. the method provided by the invention for reducing Alloy White Iron, first judges load work(in the first cyclization end and the second cyclization end
Rate is one of larger, then keeps the load power at the less cyclization end of load power constant, progressively reduces load with pre- fixed step size
The access power of the interruptible load at the larger cyclization end of power, Loop Closing Operation is simulated, it is minimum then to obtain simulation Alloy White Iron
When the first cyclization branch road and the second cyclization branch road on interruptible load access power, so as to obtain the first cyclization end and second
The mode of the expected load power at cyclization end, the step of simulating cyclization is greatly reduced, simplify the process of simulation.
5. the method provided by the invention for reducing Alloy White Iron, it obtains the expectation at the first cyclization end and the second cyclization end and born
In the two methods of lotus, the amplitude of cyclization point both end voltage difference is adjusted by adjusting load tap changer and reactive power compensator
It can be simultaneously applicable with reducing the method for Alloy White Iron, i.e., regulation load tap changer and reactive-load compensation dress are considered in simulation
If putting, then according to the first cyclization end of gained and the expected load at the second cyclization end the first interruptible load of corresponding adjustment and the
While two interruptible loads, load tap changer and reactive power compensator can also be adjusted, so as to realize active power
Adjusted while with reactive power, adjust the size of the voltage difference at cyclization point both ends to greatest extent, reduced close to greatest extent
Circular current.
6. the system provided by the invention for reducing Alloy White Iron, Interruptable-Load Management system is controlled by cyclization controller
System, the access and excision of the first interruptible load and/or the second interruptible load are managed, to adjust the wattful power on cyclization branch road
Rate, so as to adjust cyclization point both end voltage difference phase, can largely adjust cyclization point both end voltage difference size from
And reduce Alloy White Iron, there is provided a kind of new approaches for reducing Alloy White Iron.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Figure 1A is a kind of flow chart of a specific example of the method for reducing Alloy White Iron in the embodiment of the present invention 1；
Figure 1B is a kind of stream of a step S2 specific example in method for reducing Alloy White Iron in the embodiment of the present invention 1
Cheng Tu；
Another specific example that Fig. 1 C are step S2 in a kind of method for reducing Alloy White Iron in the embodiment of the present invention 1
Flow chart；
Fig. 2A is a kind of theory diagram of a specific example of the device for reducing Alloy White Iron in the embodiment of the present invention 2；
Fig. 2 B are that one of second acquisition unit specifically shows in a kind of device for reducing Alloy White Iron in the embodiment of the present invention 2
The theory diagram of example；
Fig. 2 C be in the embodiment of the present invention 2 in a kind of device for reducing Alloy White Iron second acquisition unit another is specific
The theory diagram of example.
Fig. 3 is a kind of schematic diagram of a specific example of the system for reducing Alloy White Iron in the embodiment of the present invention 3.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to which explanation, term " first ", " second ", " the 3rd " are only used for describing purpose,
And it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is the connection of two element internals, can is wireless connection or wired connection.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
Embodiment 1
The present embodiment provides a kind of method for reducing Alloy White Iron, as shown in Figure 1A, comprises the following steps：
S1：Obtain the first cyclization end of cyclization point and the load power at the second cyclization end.First corresponding to first cyclization end
The first interruptible load is connected with cyclization branch road, being connected with second on the second cyclization branch road corresponding to the second cyclization end can interrupt
Load, the load power at the first cyclization end include the access power of the first interruptible load, the load power bag at the second cyclization end
Include the access power of the second interruptible load.
Interruptible load, refer under power network peak or emergency, the part that can be interrupted in distribution network load, such as
Electric automobile, electric heater, cold accumulation air-conditioner etc., interruptible load here can interrupt including connection cyclization branch road, various
Load summation.Preferably, interruptible load is often connected on cyclization branch road, just can be right when needing to carry out Loop Closing Operation
Interruptible load is cut off.Interruptible load, the load power of adjustment interruptible load access cyclization branch road are cut off, can be adjusted
The active power of ring branch road is integrated, so as to adjust the voltage at cyclization end, reduces the voltage difference at cyclization point both ends, reduces cyclization electricity
Stream.
S2：Expected load power and the second cyclization according to the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum
The expected load power at end.
S3：The access power of the first interruptible load and/or the access power of the second interruptible load are adjusted, makes cyclization point
Both ends respectively reach the expected load power at the first cyclization end and the expected load power at the second cyclization end, so that cyclization is electric
Stream reaches minimum.
The expected load power at the first cyclization end that can be got according to step S2 and the expected load at the second cyclization end
Power, the access power of the first interruptible load or the access power of the second interruptible load are only adjusted, can also be adjusted simultaneously
The access power of the access power of first interruptible load and the second interruptible load.
S4：Loop Closing Operation is performed in cyclization point.After the completion of Loop Closing Operation, it is also necessary to recover the connection of interruptible load.
Step S2, including the access power of simulation the first interruptible load of adjustment and/or the second interruptible load, simulation are closed
Ring operates, and acquisition makes Alloy White Iron minimum, or the first cyclization end when making the Alloy White Iron be intended to minimum and the second cyclization end
Load power.
When simulating adjustment, the access of the access power or the second interruptible load of the first interruptible load can be only adjusted
Power, the access power of the first interruptible load and the access power of the second interruptible load can also be adjusted simultaneously.Obtain and close
Circular current is minimum, or the first cyclization end when making the Alloy White Iron be intended to minimum and the load power at the second cyclization end.For example,
Ideally, when Alloy White Iron is zero, optimum performs Loop Closing Operation, but to be often not necessarily adjusted to Alloy White Iron and be
Zero, for example, Alloy White Iron when being 0.75A in the range of system can allow for, then first closes when Alloy White Iron is 0.75A
The load power at ring end and the second cyclization end can also be respectively as the expected load power at the first cyclization end and the second cyclization end.
As a kind of preferred embodiment of the present embodiment, as shown in Figure 1B, step S2 includes：
S21：Keep the access power of the first interruptible load constant, the second interruptible load is progressively reduced with pre- fixed step size
Access power, simulate Loop Closing Operation, Alloy White Iron value and second interruptible load when recording simulation Loop Closing Operation every time
Access power；Until the access power of the second interruptible load is reduced to zero.
S22：Obtain the access power of the second interruptible load when simulating Alloy White Iron value minimum.
The access work(for the second interruptible load for making Alloy White Iron minimum can be got by step S21 and step 22
Rate.However, when if the load power at the second cyclization end is less than the load power at the first cyclization end, only reduce the second interruptible load
Access power can make it that the difference of the load power at the first cyclization end and the second cyclization end is increasing, can increase on the contrary cyclization electricity
Stream.Therefore, it is also desirable to the first interruptible load is adjusted again.
S23：The access power of the second interruptible load when keeping simulating Alloy White Iron value minimum is constant, with pre- fixed step size
Progressively reduce the access power of the first interruptible load, simulate Loop Closing Operation, record cyclization electricity during simulation Loop Closing Operation every time
The access power of flow valuve and the first interruptible load；Until the access power of the first interruptible load is reduced to zero.
S24：Obtain the access power of the first interruptible load when simulating Alloy White Iron value minimum.
S25：It can be interrupted according to the access power of the first interruptible load during simulation Alloy White Iron value minimum and second negative
The access power of lotus, calculate Alloy White Iron minimum when the first cyclization end expected load power and the second cyclization end expectation
Load power.
It is that the expected load power and second that can obtain the first cyclization end in step S2 closes by above-mentioned steps S21-S25
The expected load power at ring end.The program gives the load power relative size at unknown first cyclization end and the second cyclization end
In the case of, the acquisition modes of the expected load at the first cyclization end and the second cyclization end.
As another preferred embodiment of the present embodiment, as shown in Figure 1 C, step S2 also includes：
S26：Judge in the first cyclization end and the second cyclization end that load power is one of larger.
S27：Keep the load power at the less cyclization end of load power constant, load power is progressively reduced with pre- fixed step size
The access power of the interruptible load at larger cyclization end, Loop Closing Operation is simulated, record cyclization during simulation Loop Closing Operation every time
The access power of interruptible load on current value and the larger cyclization branch road of load；Until the larger cyclization branch road of load on can in
The access power of disconnected load is reduced to zero.
S28：Interruptible load on the first cyclization branch road and the second cyclization branch road when obtaining simulation Alloy White Iron minimum
Access power.
Above-mentioned steps S26-S28 is one of larger by first finding load power in the first cyclization end and the second cyclization end,
The only access power of the interruptible load at the larger cyclization end of Load adjustment, you can the phase at the first cyclization end in obtaining step S2
Hope the expected load power at load power and the second cyclization end.Compared with step S21-S25, the step of simulation cyclization is greatly reduced
Suddenly, the process of simulation is simplified.
It should be added that above-mentioned steps S21-S25 and step S26-S28 is two of step S2 arranged side by side specific
Embodiment.In above two embodiment, cyclization is adjusted by adjusting load tap changer and reactive power compensator
The amplitude of point both end voltage difference can be applicable simultaneously with reducing the method for Alloy White Iron, i.e., regulation transformer is considered in simulation
If tap and reactive power compensator, then according to the first cyclization end of gained and the corresponding adjustment of the expected load at the second cyclization end
While first interruptible load and the second interruptible load, load tap changer and reactive power compensator can also be adjusted, from
And adjusted while active power and reactive power can be realized, the voltage difference at adjustment cyclization point both ends is big to greatest extent
It is small, reduce Alloy White Iron to greatest extent.
The method provided in an embodiment of the present invention for reducing Alloy White Iron, by adjusting connected on the first cyclization branch road first
The second interruptible load connected on interruptible load and/or the second cyclization branch road, to adjust the active power on cyclization branch road,
So as to adjust the phase of cyclization point both end voltage difference, the poor size of cyclization point both end voltage can be largely adjusted so as to subtract
A kind of small Alloy White Iron, there is provided new approaches for reducing Alloy White Iron.
Embodiment 2
The present embodiment provides a kind of device for reducing Alloy White Iron, as shown in Figure 2 A, including first acquisition unit 10, second
Acquiring unit 20, adjustment unit 30 and execution unit 40.
First acquisition unit 10, for obtaining the first cyclization end of cyclization point and the load power at the second cyclization end；First
The first interruptible load is connected with corresponding to cyclization end on first cyclization branch road, corresponding to the second cyclization end on the second cyclization branch road
The second interruptible load is connected with, the load power at the first cyclization end includes the access power of the first interruptible load, and second closes
The load power at ring end includes the access power of the second interruptible load.
Second acquisition unit 20, for being born according to the expectation at the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum
Lotus power and the expected load power at the second cyclization end.
Adjustment unit 30, the access of access power and/or the second interruptible load for adjusting the first interruptible load
Power, cyclization point both ends are made to respectively reach the expected load power at the first cyclization end and the expected load power at the second cyclization end,
So that Alloy White Iron reaches minimum.
Execution unit 40, for performing Loop Closing Operation in cyclization point.
Second acquisition unit 20, including the access work(of simulation the first interruptible load of adjustment and/or the second interruptible load
Rate, Loop Closing Operation is simulated, acquisition makes Alloy White Iron minimum, or the first cyclization end and second when making the Alloy White Iron be intended to minimum
The load power at cyclization end.
As a kind of preferred embodiment of the present embodiment, second acquisition unit 20, including the first simulation subelement 21, the
One, which obtains subelement 22, second, simulates the acquisition computation subunit 25 of subelement 24 and first of subelement 23, second.
First simulation subelement 21, for keeping the access power of the first interruptible load constant, with pre- fixed step size progressively
Reduce the access power of the second interruptible load, simulate Loop Closing Operation, record Alloy White Iron value during simulation Loop Closing Operation every time
With the access power of the second interruptible load；Until the access power of the second interruptible load is reduced to zero.
First obtains subelement 22, the access work(of the second interruptible load when simulating Alloy White Iron value minimum for obtaining
Rate.
Second simulation subelement 23, for keep simulate Alloy White Iron value minimum when the second interruptible load access work(
Rate is constant, progressively reduces the access power of the first interruptible load with pre- fixed step size, simulates Loop Closing Operation, records simulation every time and closes
The access power of Alloy White Iron value and the first interruptible load when ring operates；Until the access power of the first interruptible load subtracts
Small is zero.
Second obtains subelement 24, the access work(of the first interruptible load when simulating Alloy White Iron value minimum for obtaining
Rate.
First computation subunit 25, for the access work(according to the first interruptible load during simulation Alloy White Iron value minimum
The access power of rate and the second interruptible load, the expected load power and the at the first cyclization end when calculating Alloy White Iron minimum
The expected load power at two cyclization ends.
As a kind of preferred embodiment of the present embodiment, second acquisition unit, in addition to judgment sub-unit 26, the 3rd mould
Intend subelement 27 and the 3rd and obtain subelement 28.
Judgment sub-unit 26, for judging in the first cyclization end and the second cyclization end that load power is one of larger.
3rd simulation subelement 27, for keeping the load power at the less cyclization end of load power constant, with predetermined step
The access power of the long interruptible load for progressively reducing the larger cyclization end of load power, simulates Loop Closing Operation, records each mould
The access power of interruptible load in Alloy White Iron value and the larger cyclization branch road of load when intending Loop Closing Operation；Until load compared with
The access power of interruptible load is reduced to zero on big cyclization branch road.
3rd obtains subelement 28, the first cyclization branch road and the second cyclization branch when simulating Alloy White Iron minimum for obtaining
The access power of interruptible load on road.
The device provided in an embodiment of the present invention for reducing Alloy White Iron, by adjusting connected on the first cyclization branch road first
The second interruptible load connected on interruptible load and/or the second cyclization branch road, to adjust the active power on cyclization branch road,
So as to adjust the phase of cyclization point both end voltage difference, the poor size of cyclization point both end voltage can be largely adjusted so as to subtract
A kind of small Alloy White Iron, there is provided new approaches for reducing Alloy White Iron.
Embodiment 3
The present embodiment provides a kind of system for reducing Alloy White Iron, as shown in figure 3, including
First cyclization branch road, the second cyclization branch road at cyclization point both ends, being connected with first on the first cyclization branch road can interrupt
Load, the second interruptible load is connected with the second cyclization branch road.The system of the reduction Alloy White Iron also includes interruptible load
Management system and cyclization controller.
Interruptable-Load Management system, for manage the first interruptible load and/or the second interruptible load access and
Excision.Preferably, before Loop Closing Operation, the first interruptible load is kept to access the first cyclization branch road with constant access power,
The second interruptible load is kept to access the second cyclization branch road with constant access power；In Loop Closing Operation, controlled according to cyclization
The control command of device, cut off the first interruptible load and/or the second interruptible load；After Loop Closing Operation, recover removed
The access of interruptible load, or readjust the access power of interruptible load on cyclization branch road.
Interruptible load, refer under power network peak or emergency, the part that can be interrupted in distribution network load, such as
Electric automobile, electric heater, cold accumulation air-conditioner etc., interruptible load here can interrupt including connection cyclization branch road, various
Load summation.Preferably, interruptible load is often connected on cyclization branch road, just can be right when needing to carry out Loop Closing Operation
Interruptible load is cut off.Interruptible load, the load power of adjustment interruptible load access cyclization branch road are cut off, can be adjusted
The active power of ring branch road is integrated, so as to adjust the voltage at cyclization end, reduces the voltage difference at cyclization point both ends, reduces cyclization electricity
Stream.
Cyclization controller, including the device described in embodiment 2, with that the first cyclization branch road, the second cyclization branch road and can interrupt
Load management system connects respectively, sends control command to Interruptable-Load Management system, controls Interruptable-Load Management system
Adjust the access power of the first interruptible load and/or the access power of the second interruptible load.
The system provided in an embodiment of the present invention for reducing Alloy White Iron, Interruptable-Load Management is controlled by cyclization controller
System, the access and excision of the first interruptible load and/or the second interruptible load are managed, it is active on cyclization branch road to adjust
Power, so as to adjust the phase of cyclization point both end voltage difference, it can largely adjust the size of cyclization point both end voltage difference
So as to reduce Alloy White Iron, there is provided a kind of new approaches for reducing Alloy White Iron.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
- A kind of 1. method for reducing Alloy White Iron, it is characterised in that comprise the following steps：Obtain the first cyclization end of cyclization point and the load power at the second cyclization end；First cyclization corresponding to the first cyclization end The first interruptible load is connected with branch road, being connected with second on the second cyclization branch road corresponding to the second cyclization end can interrupt Load, the load power at the first cyclization end include the access power of first interruptible load, the second cyclization end Load power include the access power of second interruptible load；Interruptible load is to be connected on cyclization branch road, in electricity The load that can be cut off or adjust under net peak or emergency；According to the expected load power at the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum and the phase at the second cyclization end Hope load power；The access power of first interruptible load and/or the access power of second interruptible load are adjusted, is made described Cyclization point both ends respectively reach the expected load power at the first cyclization end and the expected load power at the second cyclization end, So that Alloy White Iron reaches minimum；Loop Closing Operation is performed in the cyclization point.
- 2. the method according to claim 1 for reducing Alloy White Iron, it is characterised in that described obtained according to pre-defined rule is closed The expected load power at the first cyclization end during circular current minimum and the expected load power at the second cyclization end, including simulation adjustment The access power of first interruptible load and/or second interruptible load, simulates Loop Closing Operation, and acquisition makes cyclization electric Stream is minimum, or the first cyclization end when making the Alloy White Iron be intended to minimum and the expected load work(at the second cyclization end Rate.
- 3. the method according to claim 1 for reducing Alloy White Iron, it is characterised in that described obtained according to pre-defined rule is closed The step of expected load power at the first cyclization end during circular current minimum and the expected load power at the second cyclization end, including：Keep the access power of first interruptible load constant, second interruptible load is progressively reduced with pre- fixed step size Access power, simulate Loop Closing Operation, record every time simulation Loop Closing Operation when Alloy White Iron value and described second can interrupt it is negative The access power of lotus；Until the access power of second interruptible load is reduced to zero；Obtain the access power of second interruptible load when simulating Alloy White Iron value minimum；The access power of second interruptible load when keeping simulating Alloy White Iron value minimum is constant, with pre- fixed step size progressively Reduce the access power of first interruptible load, simulate Loop Closing Operation, record cyclization electricity during simulation Loop Closing Operation every time The access power of flow valuve and first interruptible load；Until the access power of first interruptible load is reduced to zero；Obtain the access power of first interruptible load when simulating Alloy White Iron value minimum；It can be interrupted according to the access power of first interruptible load during simulation Alloy White Iron value minimum and described second negative The access power of lotus, calculate Alloy White Iron minimum when the first cyclization end expected load power and the second cyclization end Expected load power.
- 4. the method according to claim 1 for reducing Alloy White Iron, it is characterised in that described obtained according to pre-defined rule is closed The step of expected load power at the first cyclization end during circular current minimum and the expected load power at the second cyclization end, also wrap Include：Judge in the first cyclization end and the second cyclization end that load power is one of larger；Keep the load power at the less cyclization end of load power constant, the larger conjunction of load power is progressively reduced with pre- fixed step size The access power of the interruptible load at ring end, simulate Loop Closing Operation, record every time simulation Loop Closing Operation when Alloy White Iron value and The access power of interruptible load on the larger cyclization branch road of load；Until it can be interrupted on the larger cyclization branch road of the load negative The access power of lotus is reduced to zero；Obtain interruptible load on the first cyclization branch road and the second cyclization branch road when simulating Alloy White Iron minimum Access power.
- A kind of 5. device for reducing Alloy White Iron, it is characterised in that including：First acquisition unit, for obtaining the first cyclization end of cyclization point and the load power at the second cyclization end；Described first closes The first interruptible load, the second cyclization branch road corresponding to the second cyclization end are connected with corresponding to ring end on first cyclization branch road On be connected with the second interruptible load, the load power at the first cyclization end includes the access work(of first interruptible load Rate, the load power at the second cyclization end include the access power of second interruptible load；Interruptible load is connection The load that can be cut off or adjust on cyclization branch road, under power network peak or emergency；Second acquisition unit, for the expected load power according to the first cyclization end during pre-defined rule acquisition Alloy White Iron minimum With the expected load power at the second cyclization end；Adjustment unit, for adjusting the access power of first interruptible load and/or connecing for second interruptible load Enter power, the cyclization point both ends is respectively reached the expected load power at the first cyclization end and the second cyclization end Expected load power, so that Alloy White Iron reaches minimum；Execution unit, for performing Loop Closing Operation in the cyclization point.
- 6. the device according to claim 5 for reducing Alloy White Iron, it is characterised in that described obtained according to pre-defined rule is closed The expected load power at the first cyclization end during circular current minimum and the expected load power at the second cyclization end, including simulation adjustment The access power of first interruptible load and/or second interruptible load, simulates Loop Closing Operation, and acquisition makes cyclization electric Stream is minimum, or the first cyclization end when making the Alloy White Iron be intended to minimum and the expected load work(at the second cyclization end Rate.
- 7. the device according to claim 5 for reducing Alloy White Iron, it is characterised in that the second acquisition unit, including：First simulation subelement, for keeping the access power of first interruptible load constant, is progressively subtracted with pre- fixed step size The access power of small second interruptible load, Loop Closing Operation is simulated, record Alloy White Iron during simulation Loop Closing Operation every time The access power of value and second interruptible load；Until the access power of second interruptible load is reduced to zero；First obtains subelement, the access work(of second interruptible load when simulating Alloy White Iron value minimum for obtaining Rate；Second simulation subelement, for keep simulate Alloy White Iron value minimum when second interruptible load access power It is constant, progressively reduce the access power of first interruptible load with pre- fixed step size, simulate Loop Closing Operation, record simulation every time The access power of Alloy White Iron value and first interruptible load during Loop Closing Operation；Until first interruptible load Access power is reduced to zero；Second obtains subelement, the access work(of first interruptible load when simulating Alloy White Iron value minimum for obtaining Rate；First computation subunit, for the access power according to first interruptible load during simulation Alloy White Iron value minimum With the access power of second interruptible load, calculate Alloy White Iron minimum when the first cyclization end expected load work( Rate and the expected load power at the second cyclization end.
- 8. the device according to claim 5 for reducing Alloy White Iron, it is characterised in that the second acquisition unit, also wrap Include：Judgment sub-unit, for judging in the first cyclization end and the second cyclization end that load power is one of larger；3rd simulation subelement, for keeping the load power at the less cyclization end of load power constant, with pre- fixed step size progressively Reduce the access power of the interruptible load at the larger cyclization end of load power, simulate Loop Closing Operation, record simulation cyclization every time The access power of interruptible load on the larger cyclization branch road of Alloy White Iron value and load during operation；Until the load is larger Cyclization branch road on the access power of interruptible load be reduced to zero；3rd obtains subelement, the first cyclization branch road and second cyclization when simulating Alloy White Iron minimum for obtaining The access power of interruptible load on branch road.
- 9. a kind of system for reducing Alloy White Iron, including the first cyclization branch road at cyclization point both ends, the second cyclization branch road, its feature Be, the first interruptible load be connected with the first cyclization branch road, be connected with the second cyclization branch road second can in Disconnected load；The system also includes：Interruptable-Load Management system, for manage first interruptible load and/or the second interruptible load access and Excision；Cyclization controller, including any described device of claim 5 to 8, with the first cyclization branch road, second cyclization Branch road and the Interruptable-Load Management system connect respectively, by controlling described in the Interruptable-Load Management system call interception The access power of the access power of one interruptible load and/or second interruptible load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610065901.8A CN105552903B (en) | 2016-01-29 | 2016-01-29 | A kind of method, apparatus and system for reducing Alloy White Iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610065901.8A CN105552903B (en) | 2016-01-29 | 2016-01-29 | A kind of method, apparatus and system for reducing Alloy White Iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105552903A CN105552903A (en) | 2016-05-04 |
| CN105552903B true CN105552903B (en) | 2018-03-30 |
Family
ID=55831917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610065901.8A Active CN105552903B (en) | 2016-01-29 | 2016-01-29 | A kind of method, apparatus and system for reducing Alloy White Iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105552903B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066671A (en) * | 2018-09-26 | 2018-12-21 | 云南电网有限责任公司电力科学研究院 | A kind of cyclization tune electric control method |
| CN109193920A (en) * | 2018-09-26 | 2019-01-11 | 云南电网有限责任公司电力科学研究院 | A kind of cyclization tune electric control system and method based on controllable inductor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010057311A (en) * | 2008-08-29 | 2010-03-11 | Chubu Electric Power Co Inc | Distributed control method of substation of electric power system |
| CN101860026A (en) * | 2010-05-28 | 2010-10-13 | 北京中恒博瑞数字电力科技有限公司 | Analysis method of electromagnetic loop closing and power reversing operation of urban distribution network |
| CN101908763A (en) * | 2010-07-23 | 2010-12-08 | 广东电网公司中山供电局 | Method for controlling distribution network closed loop |
| CN103972883A (en) * | 2014-04-11 | 2014-08-06 | 广州供电局有限公司 | Method and system for selecting power distribution network closed loop points |
-
2016
- 2016-01-29 CN CN201610065901.8A patent/CN105552903B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010057311A (en) * | 2008-08-29 | 2010-03-11 | Chubu Electric Power Co Inc | Distributed control method of substation of electric power system |
| CN101860026A (en) * | 2010-05-28 | 2010-10-13 | 北京中恒博瑞数字电力科技有限公司 | Analysis method of electromagnetic loop closing and power reversing operation of urban distribution network |
| CN101908763A (en) * | 2010-07-23 | 2010-12-08 | 广东电网公司中山供电局 | Method for controlling distribution network closed loop |
| CN103972883A (en) * | 2014-04-11 | 2014-08-06 | 广州供电局有限公司 | Method and system for selecting power distribution network closed loop points |
Non-Patent Citations (2)
| Title |
|---|
| 一种配电网合环实用潮流算法;王秀云等;《电力系统保护与控制》;20090316;第37卷(第6期);第23-26页及图2-3 * |
| 配电网合环操作的研究;苑捷;《陕西电力》;20070415;第35卷(第4期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105552903A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lee et al. | Hybrid active filter with variable conductance for harmonic resonance suppression in industrial power systems | |
| CN106786777B (en) | A kind of micro-capacitance sensor based on internal model control and off-network smooth sliding control method | |
| CN106130077B (en) | Electric car compensation of power network voltage method based on virtual synchronous generator algorithm | |
| CN105552903B (en) | A kind of method, apparatus and system for reducing Alloy White Iron | |
| Dehkordi et al. | A backstepping high-order sliding mode voltage control strategy for an islanded microgrid with harmonic/interharmonic loads | |
| Chebabhi et al. | Comparative study of reference currents and DC bus voltage control for Three-Phase Four-Wire Four-Leg SAPF to compensate harmonics and reactive power with 3D SVM | |
| CN106169754B (en) | Active Power Filter-APF neural network dynamic PID total-sliding-mode control methods | |
| CN207442454U (en) | Intelligent commutation device | |
| CN104868773B (en) | Single-phase grid-connected inverter control device based on Lyapunov function of states | |
| Castro et al. | A novel VSC-HVDC link model for dynamic power system simulations | |
| Pegueroles-Queralt et al. | Control of a lithium-ion battery storage system for microgrid applications | |
| CN105762811A (en) | System and method for controlling STATCOM and high-voltage direct-current power transmission system | |
| Chen et al. | An impedance-based parameter design method for active damping of load converter station in MTDC distribution system | |
| CN104319783A (en) | System and method for two-level distribution network coordination control based on load forecasting | |
| CN110071499B (en) | Method and system for rapidly judging safety loop closing of power distribution network | |
| Malla et al. | Supplementary control for virtual synchronous machine based on adaptive dynamic programming | |
| CN108321800B (en) | Closed loop current obtaining method based on 10 kV bus voltage vector | |
| CN101478164B (en) | Control method for independent and grid connected dual mode operated inverter | |
| CN107565591B (en) | A kind of control method and control device preventing dc power reversion | |
| JP2016178733A (en) | Automatic voltage regulation device and automatic voltage regulation method | |
| CN104967127A (en) | Rapid voltage adjusting method of microgrid in off-network state | |
| CN105958516B (en) | Distribution network terminal is caused the controlling device and administering method of low-voltage by three-phase imbalance | |
| Callegari et al. | Centralized strategy incorporating multiple control actions applied to advanced microgrids | |
| WO2016197922A1 (en) | Battery switching method and apparatus, and method and apparatus for sending battery switching signal | |
| CN109873558A (en) | A kind of precharge of current transformer and heater circuit and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |