CN109167355A - A kind of load group control method and device - Google Patents
A kind of load group control method and device Download PDFInfo
- Publication number
- CN109167355A CN109167355A CN201811188514.9A CN201811188514A CN109167355A CN 109167355 A CN109167355 A CN 109167355A CN 201811188514 A CN201811188514 A CN 201811188514A CN 109167355 A CN109167355 A CN 109167355A
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- load
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- group control
- cut
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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
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc 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
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a kind of load group control method and devices, are related to load control system technical field.By obtaining failure regional information, the priority orders in each power station then are determined according to the failure regional information, and successively cut off load, need to cut off load capacity until the load capacity actually cut off is greater than.Load group control method provided in an embodiment of the present invention has implementation process simpler with device, controls more convenient advantage.
Description
Technical field
The present invention relates to load control system technical fields, in particular to a kind of load group control method and device.
Background technique
Big and high trend is presented in power grid extra-high voltage direct-current transmission from construction scale, transmission capacity in recent years, transregional
Pattern of transmitting electricity is improved day by day.With the increase of direct current transmission scale and the raising of single time UHV transmission capacity, to receiving end power grid
For present " tetanic weak friendship " feature, system fm capacity decline, frequency stabilization outstanding problem, especially high power DC lose
It goes increasingly significant to the impact that mains frequency is stable, needs to comprehensively utilize the various controllable resources of the whole network, reduce under high-power impact
System frequency fluctuation, reduce stability disruption risk, ensure electric power netting safe running.
Power grid bring frequency stabilization problem is given for the reply high-power missing of extra-high voltage direct-current failure, power grid has been built at present
Completion source net G system realizes the frequency urgent control to receiving end power grid by the control of large user side interruptible load.But due to
Optimality is often emphasized in the research of previous stability contorting, and load control system means are more single, the control for generally taking group to cut load
System strategy, this strategy and control means are unilateral.Firstly, electric system is a multi objective control system, it is important
Index have stability, reliability, economy etc., how these indexs are coordinated, and how the links of big system are coordinated
All there is considerable difficulty.Even if can theoretically accomplish it is optimal, and due to each power train used by the design process
System component models can not comply fully with the strong nonlinearity feature of reality and system, and the resultant effect of error is can not to predict
, since accuracy all not can guarantee, covet optimal even more unpractical.Therefore, the present invention proposes that hierarchical layered is cut
The method of load.Hierarchical layered cutting load method has used for reference the thought of relay protection, using the principle for owing to cut.In this way, just solving
Certainly stability contorting is localized when this kind of specific question of large capacity remote conveying electric system, without global coordination, thus significantly
Simplified strategy table, simplified control device.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of load group control method, it is negative to solve excision in the prior art
The complex problem of the control of lotus.
Another object of the present invention is to provide a kind of load group control devices, to solve to cut off the control of load in the prior art
Make complex problem.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows:
On the one hand, the embodiment of the present invention proposes that a kind of load group control method, the load group control method include:
Obtain failure regional information;
The priority orders in each power station are determined according to the failure regional information, and successively cut off load, until reality
The load capacity of excision, which is greater than, need to cut off load capacity.
On the other hand, the embodiment of the present invention also proposes that a kind of load group control device, the load group control device include:
Information acquisition unit, for obtaining failure regional information;
Load cuts off unit, for determining the priority orders in each power station according to the failure regional information, and successively
Load is cut off, load capacity need to be cut off until the load capacity actually cut off is greater than.
Compared with the prior art, the invention has the following advantages:
Provided by the invention a kind of load group control method and device, by obtaining failure regional information, then according to institute
It states failure regional information and determines the priority orders in each power station, and successively cut off load, until the load capacity actually cut off
Greater than load capacity need to be cut off.Due to the priority orders of the invention for determining power station by failure regional information, then successively cut
It is simpler in implementation process except load, it controls more convenient.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the functional block diagram of the server of the embodiment of the present invention offer.
Fig. 2 shows the flow charts of load group control method provided in an embodiment of the present invention.
Fig. 3 shows the flow chart of the sub-step of step S103 in Fig. 2.
Fig. 4 shows the module diagram of load group control device provided in an embodiment of the present invention.
Fig. 5 shows the submodule schematic diagram of load excision unit provided in an embodiment of the present invention.
Icon: 10- server;12- memory;13- storage control;14- processor;100- load group control device;
110- level division unit;120- information acquisition unit;130- load cuts off unit;131- sorting module;The excision of 132- load
Module.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " connected ", " connection " shall be understood in a broad sense,
It for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can be mechanical connection, be also possible to electricity
Connection;It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.For
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.It ties below
Attached drawing is closed, is elaborated to some embodiments of the present invention.In the absence of conflict, following embodiment and embodiment
In feature can be combined with each other.
First embodiment
As shown in Figure 1, being the functional block diagram of server 10 provided by the invention.The server 10 includes load group
Control device 100, memory 12, storage control 13 and processor 14.
The memory 12, storage control 13 and each element of processor 14 directly or indirectly electrically connect between each other
It connects, to realize the transmission or interaction of data.For example, these elements can pass through one or more communication bus or signal between each other
Line, which is realized, to be electrically connected.The load group control device 100 includes at least one can be in the form of software or firmware (firmware)
It is stored in the memory 12 or is solidificated in and is in the operating system (operating system, OS) of the server 10 soft
Part functional module.The processor 14 is for executing the executable module stored in memory 12, such as load team control dress
Set the software function module or computer program that 100 include.
Wherein, memory 12 may be, but not limited to, random access memory 12 (Random Access Memory,
RAM), read-only memory 12 (Read Only Memory, ROM), (the Programmable Read- of programmable read only memory 12
Only Memory, PROM), erasable read-only memory 12 (Erasable Programmable Read-Only Memory,
EPROM), electricallyerasable ROM (EEROM) 12 (Electric Erasable Programmable Read-Only Memory,
EEPROM) etc..Wherein, memory 12 is for storing program, and the processor 14 executes the journey after receiving and executing instruction
Sequence, method performed by the server 10 that the stream process that aforementioned any embodiment of the embodiment of the present invention discloses defines can be applied to
In processor 14, or realized by processor 14.
Processor 14 may be a kind of IC chip, the processing capacity with signal.Above-mentioned processor 14 can be with
It is general processor 14, including central processing unit 14 (Central Processing Unit, abbreviation CPU), network processing unit 14
(Network Processor, abbreviation NP) etc.;It can also be digital signal processor 14 (DSP), specific integrated circuit
(ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor 14 can be microprocessor 14 or the processor 14 is also possible to any conventional processor 14 etc..
Referring to Fig. 2, being the process applied to load group control method shown in FIG. 1 that present pre-ferred embodiments provide
Figure.Detailed process shown in Fig. 2 will be described in detail below.
Step S101 divides multiple levels to each power station, and records the load capacity of each level.
In the present embodiment, simple in order to control, based on current source net G system, the thought of relay protection has been used for reference,
Using the principle for owing to cut.Wherein, nearest cutting load is corresponding with protection excision troubles inside the sample space;Layer-by-layer cutting load and back-up protection phase
It is corresponding;Each layer on startup between on cooperation it is also corresponding with the time coordinations of protection.In this way, just solving large capacity remote conveying
Stability contorting is localized when this kind of specific question of electric system, without global coordination.To greatly simplify Policy Table, simplify control
Device processed.
Specific practice is: foundation owes to cut principle, according to electrical distance, the load of distant place plant-grid connection point after load and failure
The composite factors distance such as power supply reliability layering setting cutting load device.When interconnection breaks down, start cutting load by layer,
Until cutting enough.Which layer is switched to as to specific failure, both can once cut multilayer with off-line calculation, can also be different layer adjusting
Different starting time limits, online multi layered load shedding.
Wherein, it needs to divide multiple levels to each power station first, and records the load appearance of each level in server 10
Amount.
For example, each power station is divided into 6 levels, wherein server 10 receive 6 level of the power station A can cutting load capacity, system
Count the 1st level load capacity P11, the 2nd level load capacity P12, the 3rd level load capacity P13, the 4th level load capacity
P14, the 5th level load capacity P15, the 6th level load capacity P16.
6 levels for receiving the power station B can cutting load capacity, respectively the 1st level load capacity P21, the 2nd level load capacity
P22, the 3rd level load capacity P23, the 4th level load capacity P24, the 5th level load capacity P25, the 6th level load capacity
P26。
6 levels for receiving the power station C can cutting load capacity, respectively the 1st level load capacity P31, the 2nd level load capacity
P32, the 3rd level load capacity P33, the 4th level load capacity P34, the 5th level load capacity P35, the 6th level load capacity
P36。
Step S102 obtains failure regional information.
Step S103 determines the priority orders in each power station according to the failure regional information, and successively cuts off load,
Load capacity need to be cut off until the load capacity actually cut off is greater than.
Wherein, referring to Fig. 3, step S103 includes:
Sub-step S1031 is ranked up multiple power stations according to the failure regional information.
For example, do priority ranking according to the power station C, the power station B, the power station A when there is DC Line Fault outside the province, when occurring the
When two regional failures, priority ranking is done according to the power station B, the power station A, the power station C, and so on.
Sub-step S1032 successively cuts off load according to the priority of the level in power station and each power station after sequence.
Wherein, sub-step includes:
Sub-step S1033 is that row is arranged with the level in each power station, wherein every with putting in order as column for power station
The level in power station is according to priority arranged to form a line.
Sub-step S1034 successively cuts off load along columns, need to cut off load appearance until the load capacity actually cut off is greater than
Amount.
It is exemplified below, when there is DC Line Fault outside the province, is priority row according to the power station C, the power station B, the power station A
Sequence, and load is cut off by the sequence of level 1-6,
When there is the second regional failure, priority ranking is done according to the power station B, the power station A, the power station C, and by level 1-6's
Sequence excision load,
Also, excision set value of the power is set as Pset, the practical capacity that cuts off is Pcut, such as brocade Soviet Union's DC Line Fault but brocade Soviet Union
DC loss power P < Pset, it is Pcut that East China master station, which needs cutting load capacity,;
If Pcut < P11, the practical total amount that cuts off is that wood shows disrespect on one level load P11 of area;
If Pcut >=P11, but Pcut < (P11+P21), then practical excision total amount is that wood shows disrespect on a regional level load
P11;
If Pcut >=P11+P21, but Pcut < (P11+P21+P31), then practical excision total amount is that wood shows disrespect on area and phoenix
One level load P11+P21 of city area;
If Pcut >=P11+P21+P31, but Pcut < (P11+P21+P31+P12), then practical excision total amount is shown disrespect on for wood
Area, Fengcheng City area and upper one level load P11+P21+P31 of river area;
Such as Pcut >=P11+P21+P31+P12, but Pcut < (P11+P21+P31+P12+P22), then practical excision total amount
Regional one, two levels and Fengcheng City area, the regional level load (P11+P21+P31+P12) in upper river are shown disrespect on for wood.And so on.
Second embodiment
Referring to Fig. 4, the functional unit for the load group control device 100 shown in FIG. 1 that present pre-ferred embodiments provide shows
It is intended to.It should be noted that the technical effect of load group control device 100 provided by the present embodiment, basic principle and generation
Identical with above-described embodiment, to briefly describe, part of the embodiment of the present invention does not refer to place, can refer to phase in the above embodiments
Answer content.Load group control device 100 includes:
Level division unit 110 for dividing multiple levels to each power station, and records the load capacity of each level.
It is to be appreciated that step S101 can be performed by level division unit 110.
Information acquisition unit 120, for obtaining failure regional information.
It is to be appreciated that step S102 can be performed by information acquisition unit 120.
Load cuts off unit 130, for determining the priority orders in each power station according to the failure regional information, and according to
Secondary excision load.
It is to be appreciated that step S103 can be performed by information acquisition unit 120.
Wherein, referring to Fig. 5, load excision unit 130 includes:
Sorting module 131, for being ranked up according to the failure regional information to multiple power stations.
It is to be appreciated that sub-step S1031 can be performed by sorting module 131.
Load cuts off module 132, and the priority for the level according to power station and each power station after sequence is successively cut off
Load.
It is to be appreciated that cutting off module 132 by load can be performed sub-step S1032.
Load cuts off module 132
Sorting sub-module is that row is arranged with the level in each power station for putting in order as column with power station,
In, the level in every power station is according to priority arranged to form a line.
It is to be appreciated that sub-step S1033 can be performed by sorting sub-module.
Load cuts off submodule, for successively cutting off load along columns, until the load capacity actually cut off is greater than and need to cut
Except load capacity.
It is to be appreciated that cutting off submodule by load can be performed sub-step S1034.
In conclusion a kind of load group control method provided by the invention and device, by obtaining failure regional information, so
The priority orders in each power station are determined according to the failure regional information afterwards, and successively cut off load, until what is actually cut off
Load capacity, which is greater than, need to cut off load capacity.Due to the priority orders of the invention for determining power station by failure regional information, so
Load is successively cut off afterwards, it is simpler in implementation process, it controls more convenient.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
Claims (8)
1. a kind of load group control method, which is characterized in that the load group control method includes:
Obtain failure regional information;
The priority orders in each power station are determined according to the failure regional information, and successively cut off load, until practical excision
Load capacity be greater than need to cut off load capacity.
2. load group control method as described in claim 1, which is characterized in that described to be determined often according to the failure regional information
The priority orders in a power station, and the step of successively cutting off load includes:
Multiple power stations are ranked up according to the failure regional information;
Load is successively cut off according to the priority of the level in power station and each power station after sequence.
3. load group control method as claimed in claim 2, which is characterized in that each power station includes multiple levels, and each electricity
The level stood according to priority is ranked up, and the priority of the level in the power station according to after sequence and each power station is successively cut off
The step of load includes:
It is that row is arranged with the level in each power station, wherein the level in every power station is by preferential with putting in order as column for power station
Grade is arranged to form a line;
Load is successively cut off along columns, load capacity need to be cut off until the load capacity actually cut off is greater than.
4. load group control method as claimed in claim 2, which is characterized in that the acquisition failure regional information the step of it
Before, the load group control method further include:
Multiple levels are divided to each power station, and record the load capacity of each level.
5. a kind of load group control device, which is characterized in that the load group control device includes:
Information acquisition unit, for obtaining failure regional information;
Load cuts off unit, for determining the priority orders in each power station according to the failure regional information, and successively cuts off
Load need to cut off load capacity until the load capacity actually cut off is greater than.
6. load group control device as claimed in claim 5, which is characterized in that the load cuts off unit and includes:
Sorting module, for being ranked up according to the failure regional information to multiple power stations;
Load cuts off module, and the priority for the level according to power station and each power station after sequence successively cuts off load.
7. load group control device as claimed in claim 6, which is characterized in that each power station includes multiple levels, and each electricity
The level stood according to priority is ranked up, and the load excision module includes:
Sorting sub-module is that row is arranged with the level in each power station, wherein every for putting in order as column with power station
The level in power station is according to priority arranged to form a line;
Load cuts off submodule, for successively cutting off load along columns, until the load capacity actually cut off is negative greater than that need to cut off
Lotus capacity.
8. load group control device as claimed in claim 6, which is characterized in that load group control device further include:
Level division unit for dividing multiple levels to each power station, and records the load capacity of each level.
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CN201811188514.9A CN109167355B (en) | 2018-10-12 | 2018-10-12 | Load group control method and device |
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CN109167355B CN109167355B (en) | 2020-12-04 |
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CN111697554A (en) * | 2020-05-20 | 2020-09-22 | 南方电网科学研究院有限责任公司 | Method and device for stably controlling multiple direct-current faults of direct-current receiving-end power grid |
CN112803426A (en) * | 2021-01-05 | 2021-05-14 | 许继集团有限公司 | Load shedding control method and device |
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CN105634128A (en) * | 2016-01-27 | 2016-06-01 | 国网山东无棣县供电公司 | Maintenance and control system between master substation and slave stations |
CN108539750A (en) * | 2018-05-17 | 2018-09-14 | 国网山东省电力公司经济技术研究院 | A kind of accurate load control system and method based on steady control technology |
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