CN106208155B - The control method and device of interconnection transmission power security constraint - Google Patents
The control method and device of interconnection transmission power security constraint Download PDFInfo
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- CN106208155B CN106208155B CN201610777053.3A CN201610777053A CN106208155B CN 106208155 B CN106208155 B CN 106208155B CN 201610777053 A CN201610777053 A CN 201610777053A CN 106208155 B CN106208155 B CN 106208155B
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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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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Abstract
The present invention provides a kind of control methods and device of interconnection transmission power security constraint, wherein this method includes：When there are the active power regulation upper and lower limits for when security constraint, obtaining each unit in the generating set according to the following equation for the associated interconnection corridor of generating set and its transmission line of electricity for being included, electrical equipment：Control the active-power P of each unit in the generating setgMeet： WithThe respectively active power upper and lower limit of unit g；So that the interconnection corridor and its transmission line of electricity and electrical equipment that are included are limited within the scope of security constraint.By means of the invention it is possible to alleviating above-mentioned manual control mode compares time and effort consuming, and the problem that safety, promptness are poor.
Description
Technical field
The present invention relates to Electric control fields, in particular to the control method of interconnection transmission power security constraint
And device.
Background technology
With the continuous development of electric system, system scale is increasing, and electrical connection becomes increasingly complex.Usually transmission of electricity is logical
Transmission line of electricity that road section (hereinafter referred to as interconnection corridor) is included, electrical equipment are there are security constraint, and thus section is cut
Made of be closed control area must satisfy this security constraint.
Transmission line of electricity that interconnection corridor is included, electrical equipment should meet：Wherein：PiFor transmission of electricity
The active power of circuit or electrical equipment i,WithThe respectively security constraint of transmission line of electricity or electrical equipment i is upper and lower
Limit.
Interconnection corridor should meet：Wherein：PcFor the wattful power of interconnection corridor actual fed
Rate,WithThe respectively security constraint upper and lower limit in interconnection corridor.
To make the interconnection corridor and its transmission line of electricity for being included, electrical equipment active power be limited in security constraint
Within the scope of, it is usually adopted by the Dispatchers on duty of power dispatching station visually monitor interconnection corridor and its institute in the related technology
Including each transmission line of electricity, each electrical equipment operating status, when there is abnormal conditions generation, Advise By Wire generating set
Operator adjust the active power of corresponding generating set.This manual control mode compares time and effort consuming, and safety
Property, promptness are poor.
Invention content
In view of this, the embodiment of the present invention is designed to provide a kind of controlling party of interconnection transmission power security constraint
Method and device can alleviate above-mentioned manual control mode and compare time and effort consuming, and the problem that safety, promptness are poor.
An embodiment of the present invention provides a kind of control methods of interconnection transmission power security constraint, including：
When there are security constraints for the associated interconnection corridor of generating set and its transmission line of electricity, the electrical equipment that are included
When, the active power regulation upper and lower limit of each unit in the generating set is obtained according to the following equation：
And：
Wherein：The interconnection corridor is the associated passway for transmitting electricity section of the generating set, Respectively institute
Upper and lower limit is adjusted in the active power for stating the unit g in generating set, and g is positive integer, PgFor the active power of unit g,WithThe upper and lower adjustable capacity of active power of respectively unit g,WithRespectively unit g's is active
Power upper and lower limit；WithRespectively the security constraint upper limit minimum critical nargin in interconnection corridor and lower limit are minimum
Critical nargin,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor interconnection corridor actual fed
Active power；PiThe active power of the transmission line of electricity or electrical equipment i that include by the interconnection corridor；With
The critical nargin of security constraint upper and lower limit of respectively transmission line of electricity or electrical equipment i,WithRespectively transmission line of electricity or
The security constraint upper and lower limit of electrical equipment i, the transmission line of electricity and electrical equipment number that n includes by the interconnection corridor；
Control the active-power P of each unit in the generating setgMeet：So that described
Winding thread corridor and its transmission line of electricity for being included and electrical equipment are limited within the scope of security constraint.
The above method further includes：
IfThe total active power regulation amount of the generating set is set
Sensitivity according to the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to
Certain proportionality coefficient is by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
IfThe total active power regulation amount of the generating set is set
Sensitivity according to the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to
Certain proportionality coefficient is by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
Wherein：ΔPGFor the total active power regulation amount of the generating set, BsFor the coefficient of frequency of interconnected electric power system,
BiThe coefficient of frequency in region in order to control,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor interconnection
The active power of corridor actual fed；
By to each unit active-power P in the generating setgControl, it is actually defeated to correct the interconnection corridor
The active power sent is allowed to meet：
The embodiment of the present invention additionally provides a kind of control device of interconnection transmission power security constraint, including：
Unit adjusts bound acquisition module, for when transmission of electricity generating set associated interconnection corridor and its included
Circuit, electrical equipment obtain the active power of each unit in the generating set according to the following equation there are when security constraint
Adjust upper and lower limit：
And：
Wherein：The interconnection corridor is the associated passway for transmitting electricity section of the generating set, Respectively institute
Upper and lower limit is adjusted in the active power for stating the unit g in generating set, and g is positive integer, PgFor the active power of unit g,WithThe upper and lower adjustable capacity of active power of respectively unit g,WithRespectively unit g's is active
Power upper and lower limit；WithRespectively interconnection corridor security constraint upper limit minimum critical nargin and lower limit minimum are faced
Boundary's nargin,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor having for interconnection corridor actual fed
Work(power；PiThe active power of the transmission line of electricity or electrical equipment i that include by the interconnection corridor；WithPoint
Not Wei transmission line of electricity or electrical equipment i the critical nargin of security constraint upper and lower limit,WithRespectively transmission line of electricity or electricity
The security constraint upper and lower limit of gas element i, the transmission line of electricity and electrical equipment number that n includes by the interconnection corridor；
Unit active power controller module, the active power for controlling each unit in the generating set meet：So that the interconnection corridor and its transmission line of electricity and electrical equipment that are included are limited in security constraint
Within the scope of.
Above-mentioned apparatus further includes：
The out-of-limit correction module of interconnection corridor active power, for being more than security constraint when the active power in interconnection corridor
When limits value, the total active power regulation amount of the generating set is set, by active to each unit in the generating set
Power PgControl, correct the active-power P of interconnection corridor actual fedc, it is allowed to meet：
So that the active power of interconnection corridor actual fed is corrected within the scope of security constraint：
IfThe total active power regulation amount of the generating set is set
Sensitivity according to the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to
Certain proportionality coefficient is by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
IfThe total active power regulation amount of controllable electric generator group is set
Sensitivity according to the regulation performance of unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to certain
Proportionality coefficient by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
Wherein：ΔPGFor the total active power regulation amount of the generating set, BsFor the coefficient of frequency of interconnected electric power system,
BiThe coefficient of frequency in region in order to control,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor interconnection
The active power of corridor actual fed.
Method and apparatus provided in an embodiment of the present invention pass through the wattful power of each unit in automatic generator group
Rate is allowed to be limited within the scope of the adjustable upper and lower limit of its active power.Gone up since the active power of each unit is adjustable,
Lower limit is value associated with the interconnection corridor critical nargin of security constraint upper and lower limit actually calculated, therefore can be effective
Ensure that the interconnection corridor and its transmission line of electricity and electrical equipment that are included are limited within the scope of security constraint, Jin Erhuan
It has solved manual control mode and has compared time and effort consuming, and the problem that safety, promptness are poor.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
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 a kind of control method flow for interconnection transmission power security constraint that the embodiment of the present invention is provided
Figure；
The structural frames of the control device of the interconnection transmission power security constraint provided Fig. 2 shows the embodiment of the present invention
Figure.
Specific implementation mode
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
Middle attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It 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 real
Applying the component of example can be arranged and designed with a variety of different configurations.Therefore, below to provide in the accompanying drawings the present invention
The detailed description of embodiment is not intended to limit the range of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on the embodiment of the present invention, the institute that those skilled in the art are obtained without making creative work
There is other embodiment, shall fall within the protection scope of the present invention.
The control method flow chart of interconnection transmission power security constraint shown in Figure 1, this method include following step
Suddenly：
Step S102, when the associated interconnection corridor of generating set and its transmission line of electricity for being included, electrical equipment exist
When security constraint, the active power regulation upper and lower limit of each unit in generating set is obtained, can specifically be counted according to the following equation
It obtains：
And：
Wherein：Above-mentioned interconnection corridor is the abbreviation of the associated passway for transmitting electricity section of above-mentioned generating set,
Upper and lower limit is adjusted in the active power of unit g in the respectively described generating set, and g is positive integer, PgFor the active of unit g
Power,WithThe upper and lower adjustable capacity of active power of respectively unit g,WithRespectively unit g's
Active power upper and lower limit；WithRespectively the interconnection corridor security constraint upper limit minimum critical nargin and lower limit
Minimum critical nargin,WithThe respectively security constraint upper and lower limit in the interconnection corridor, PcFor interconnection corridor reality
The active power of conveying；PiThe active power of the transmission line of electricity or electrical equipment i that are included for the interconnection corridor；WithThe critical nargin of security constraint upper and lower limit of respectively transmission line of electricity or electrical equipment i,WithRespectively transmit electricity
The security constraint upper and lower limit of circuit or electrical equipment i, the transmission line of electricity and electrical equipment number that n is included for the interconnection corridor.
Step S104 controls the active-power P of each unit in above-mentioned generating setgMeet：With
Above-mentioned interconnection corridor and its transmission line of electricity and electrical equipment that are included is set to be limited within the scope of security constraint.
By the active power of each unit in automatic generator group, be allowed to be limited in it has the method for the present embodiment
Within the scope of work(power adjustable section upper and lower limit.Since the active power of each unit is adjusted upper and lower limit and actually calculates
The associated value of the critical nargin of interconnection corridor security constraint upper and lower limit, therefore can be with interconnection corridor described in effective guarantee
And its transmission line of electricity and electrical equipment for being included are limited within the scope of security constraint, and then alleviate manual control mode ratio
It is relatively time-consuming laborious, and the problem that safety, promptness are poor.
The transmission line of electricity or electrical equipment for being included in view of interconnection corridor might have emergency case, for example, certain
Transmission line of electricity catastrophic failure, at this time the active power of interconnection corridor actual fed can redistribute, to ensure this situation second line of a couplet
Winding thread corridor and its transmission line of electricity for being included and electrical equipment within the scope of security constraint, the above method can also include with
Lower step：
(1) ifThe total active power regulation amount of above-mentioned generating set is setIt is active to being associated with transmission line of electricity, electrical equipment with unit according to the regulation performance of each unit
The sensitivity that power influences, coefficient is by Δ P according to a certain percentageGEach unit in the generating set is distributed to, control is each
The active-power P of a unitg, so that
(2) ifThe total active power regulation amount of above-mentioned generating set is setAccording to the regulation performance of unit with unit to being associated with transmission line of electricity, electrical equipment active power
The sensitivity of influence, coefficient is by Δ P according to a certain percentageGEach unit in the generating set is distributed to, each machine is controlled
The active-power P of groupg, so that
Wherein：ΔPGFor the total active power regulation amount of the generating set, BsFor the coefficient of frequency of interconnected electric power system,
BiThe coefficient of frequency in region in order to control,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor interconnection
The active power of corridor actual fed；
(3) active-power P of interconnection corridor actual fed is monitoredc, judge whether to meet：Terminate this correction course if meeting security constraint；It is repeated if being unsatisfactory for security constraint above-mentioned
Step, within the scope of the active power of interconnection corridor actual fed is corrected to security constraint.
Above-mentioned control mode in order to better understand, is given below theory analysis.
The active power of transmission line of electricity, electrical equipment that interconnection corridor is included should meet following restrictive conditions：
Wherein：PiFor the active power of transmission line of electricity or electrical equipment i,WithRespectively transmission line of electricity or electrical
The security constraint upper and lower limit of element i.
The active power of interconnection corridor actual fed should meet following restrictive conditions：
Wherein：PcFor the active power of interconnection corridor actual fed,WithThe respectively peace in interconnection corridor
Staff cultivation upper and lower limit.
The active power of the transmission line of electricity and electrical equipment that are included by interconnection corridor is distributed not in actual operation
, individual transmission lines of electricity or electrical equipment may take the lead in close to even more than its security constraint upper and lower limit, to ensure that interconnection is walked
The active power of corridor and its any transmission line of electricity and electrical equipment that are included is limited within the scope of security constraint, security constraint
Upper and lower limit is calculated as follows：
Wherein：PiFor the active power of transmission line of electricity or electrical equipment i, i is positive integer,WithIt is respectively defeated
The critical nargin of security constraint upper and lower limit of electric line or electrical equipment i,WithRespectively transmission line of electricity or electrical equipment
The security constraint upper and lower limit of i, the transmission line of electricity and electrical equipment number that n includes by passway for transmitting electricity section.
This method by monitoring and obtaining the wattful power of transmission line of electricity and electrical equipment that interconnection corridor is included in real time
Rate and the critical nargin of security constraint upper and lower limit, transmission line of electricity or electrical equipment of the choice of dynamical closest to security constraint upper and lower limit
Security constraint upper and lower limit critical nargin of the critical nargin of security constraint upper and lower limit as interconnection corridor, calculate connection accordingly
The current security constraint upper and lower limit in winding thread corridor, so that the active power of interconnection corridor actual fed meets：The active power for the transmission line of electricity and electrical equipment that interconnection corridor is included meets：
Generating set active power is only adjusted in the range of restriction, it is therefore necessary to meet following restrictive condition：
Wherein：PgFor the active power of unit g,WithThe respectively upper and lower limit of unit g.
Since the variation of unit active power is to the active of interconnection corridor and its transmission line of electricity for being included and electrical equipment
Changed power has certain influence, when the associated interconnection corridor of generating set and its circuit for being included, element have safety about
Shu Shi adjusts bound and is calculated as follows：
Wherein：Respectively upper and lower limit is adjusted in the active power of unit g, and g is positive integer, PgFor unit g
Active power,WithThe upper and lower adjustable capacity of active power of respectively unit g,WithRespectively
The active power upper and lower limit of unit g；WithRespectively interconnection corridor security constraint upper limit minimum critical nargin
With lower limit minimum critical nargin,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor interconnection corridor
The active power of actual fed.
This method is adjusted during upper and lower limit calculates in unit active power and introduces the associated interconnection corridor safety of unit about
Beam upper and lower limit minimum critical nargin, and be compared with the upper and lower adjustable capacity of the active power of unit, choice of dynamical most connects
The nearly upper and lower adjustable capacity of active power of upper and lower limit adjustable capacity or critical nargin as unit, calculates unit accordingly
Upper and lower limit, the transmission line of electricity and electricity that can make the associated interconnection corridor of unit and its be included is adjusted in current active power
Gas element active power is limited within the scope of security constraint.
Correspondingly interconnection corridor security constraint precautionary measures are：
Because：
If：Then：
If：Then：
Wherein：Respectively upper and lower limit, P is adjusted in the active power of unit ggFor the wattful power of unit g
Rate.
Passway for transmitting electricity section (interconnection corridor) security constraint corrective action is：
Because：
If：Then：
If：Then：
Wherein：PcFor the active power of interconnection corridor actual fed,WithThe respectively peace in interconnection corridor
Staff cultivation upper and lower limit；ΔPGFor the total active power regulation amount of the generating set；BsFor the coefficient of frequency of interconnected electric power system,
BiThe coefficient of frequency in region in order to control.
Corresponding to the above method, the embodiment of the present invention additionally provides a kind of control dress of interconnection transmission power security constraint
It sets, referring to Fig. 2, which comprises the following modules：
Unit adjusts bound acquisition module 22, for when line generating set associated interconnection corridor and its included
Road, element there are when security constraint, obtain according to the following equation in the generating set on the active power regulation of each unit,
Lower limit：
And：
Wherein：Upper and lower limit, g is adjusted in the active power of unit g in the respectively described generating set
For positive integer, PgFor the active power of unit g,WithRespectively the active power of unit g is adjusted holds above and below
Amount,WithThe respectively active power upper and lower limit of unit g；WithRespectively interconnection corridor is safe about
Beam upper limit minimum critical nargin and lower limit minimum critical nargin,WithRespectively on the security constraint in interconnection corridor,
Lower limit, PcFor the active power of interconnection corridor actual fed；PiFor the interconnection corridor interconnection or element i it is active
Power；WithThe critical nargin of security constraint upper and lower limit of respectively interconnection or element i,WithRespectively
For interconnection or the security constraint upper and lower limit of element i, the circuit and parts number that n includes by the interconnection corridor.
Unit active power controller module 24, the active power for controlling each unit in the generating set meet：So that the interconnection corridor and its transmission line of electricity and electrical equipment that are included are limited in security constraint
Within the scope of.
The device of the present embodiment is allowed to be limited in it by the active power of each unit in automatic generator group to be had
Within the scope of work(power adjustable section upper and lower limit.Since the active power of each unit is adjusted upper and lower limit and actually calculates
The associated value of the critical nargin of interconnection corridor security constraint upper and lower limit, thus can with effective guarantee interconnection corridor and its
Including transmission line of electricity and electrical equipment be limited within the scope of security constraint, and then solve manual control mode and compare consumption
When laborious, and the problem that safety, promptness are poor.
Further, above-mentioned apparatus can also comprise the following modules：
The out-of-limit correction module of interconnection corridor active power, for being more than security constraint when the active power in interconnection corridor
When limits value, the total active power regulation amount of the generating set is set, by active to each unit in the generating set
The control of power corrects the active-power P of interconnection corridor actual fedcMeet：So that institute
The active power for stating interconnection corridor actual fed is corrected within the scope of security constraint：
IfThe total active power regulation amount of the generating set is set
Sensitivity according to the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to
Certain proportionality coefficient is by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
IfThe total active power regulation amount of controllable electric generator group is set
Sensitivity according to the regulation performance of unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to certain
Proportionality coefficient by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
Wherein：ΔPGFor the total active power regulation amount of the generating set, BsFor the coefficient of frequency of interconnected electric power system,
BiThe coefficient of frequency in region in order to control,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor interconnection
The active power of corridor actual fed.
Above example of the present invention uses the active power of each unit in automatic generator group, is allowed to be limited in it
Active power is adjusted within the scope of upper and lower limit.It is and practical measuring and calculating since upper and lower limit is adjusted in the active power of each unit
The associated value of the critical nargin of interconnection corridor security constraint upper and lower limit, therefore can with effective guarantee interconnection corridor and
Its transmission line of electricity for being included and electrical equipment are limited within the scope of security constraint, and then are solved manual control mode and compared
Time and effort consuming, and the problem that safety, promptness are poor.
The embodiment of the present invention additionally provides computer program product corresponding with the above method and device, including stores journey
The computer readable storage medium of sequence code, the instruction that said program code includes can be used for executing institute in previous methods embodiment
The method stated, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. a kind of control method of interconnection transmission power security constraint, which is characterized in that including：
When the associated interconnection corridor of generating set and its transmission line of electricity for being included, electrical equipment are there are when security constraint, press
The active power regulation upper and lower limit of each unit in the generating set is obtained according to following formula：
And：
ΔPi MIN=Pi MIN-Pi
ΔPi MAX=Pi MAX-Pi
Wherein：The interconnection corridor is the associated passway for transmitting electricity section of the generating set, The respectively described hair
Upper and lower limit is adjusted in the active power of unit g in motor group, and g is positive integer, PgFor the active power of unit g,WithThe upper and lower adjustable capacity of active power of respectively unit g,WithRespectively in the active power of unit g,
Lower limit；WithThe security constraint upper limit minimum critical nargin and lower limit minimum critical in respectively interconnection corridor are abundant
Degree,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor the wattful power of interconnection corridor actual fed
Rate；PiThe active power of the transmission line of electricity or electrical equipment i that include by the interconnection corridor；ΔPi MAXWith Δ Pi MINRespectively
For the critical nargin of security constraint upper and lower limit of transmission line of electricity or electrical equipment i, Pi MAXAnd Pi MINRespectively transmission line of electricity or electrical
The security constraint upper and lower limit of element i, the transmission line of electricity and electrical equipment number that n includes by the interconnection corridor；
Control the active-power P of each unit in the generating setgMeet：So that the interconnection is walked
Corridor and its transmission line of electricity for being included and electrical equipment are limited within the scope of security constraint；
The method further includes：
IfThe total active power regulation amount of the generating set is setAccording to
Sensitivity of the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to certain
Proportionality coefficient by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
IfThe total active power regulation amount of the generating set is setRoot
Sensitivity according to the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to one
Fixed proportionality coefficient is by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
Wherein：ΔPGFor the total active power regulation amount of the generating set, BsFor the coefficient of frequency of interconnected electric power system, BiFor
The coefficient of frequency of control area,WithThe respectively security constraint upper and lower limit in interconnection corridor, PCFor interconnection corridor
The active power of actual fed；
By to each unit active-power P in the generating setgControl, correct interconnection corridor actual fed
Active power is allowed to meet：
2. a kind of control device of interconnection transmission power security constraint, which is characterized in that including：
Unit adjusts bound acquisition module, for when power transmission line generating set associated interconnection corridor and its included
There are the active power tune for when security constraint, obtaining each unit in the generating set according to the following equation for road, electrical equipment
Save upper and lower limit：
And：
ΔPi MIN=Pi MIN-Pi
ΔPi MAX=Pi MAX-Pi
Wherein：The interconnection corridor is the associated passway for transmitting electricity section of the generating set, The respectively described hair
Upper and lower limit is adjusted in the active power of unit g in motor group, and g is positive integer, PgFor the active power of unit g,WithThe upper and lower adjustable capacity of active power of respectively unit g,WithRespectively in the active power of unit g,
Lower limit；WithRespectively interconnection corridor security constraint upper limit minimum critical nargin and lower limit minimum critical nargin,WithThe respectively security constraint upper and lower limit in interconnection corridor, PcFor the active power of interconnection corridor actual fed；
PiThe active power of the transmission line of electricity or electrical equipment i that include by the interconnection corridor；ΔPi MAXWith Δ Pi MINIt is respectively defeated
The critical nargin of security constraint upper and lower limit of electric line or electrical equipment i, Pi MAXAnd Pi MINRespectively transmission line of electricity or electrical equipment i
Security constraint upper and lower limit, the transmission line of electricity and electrical equipment number that n includes by the interconnection corridor；
Unit active power controller module, the active power for controlling each unit in the generating set meet：So that the interconnection corridor and its transmission line of electricity and electrical equipment that are included are limited in security constraint
Within the scope of；
Described device further includes：
Active power out-of-limit correction module in interconnection corridor is limited for the active power when interconnection corridor more than security constraint
When value, the total active power regulation amount of the generating set is set, by each unit active power in the generating set
PgControl, correct the active-power P of interconnection corridor actual fedC, it is allowed to meet：So that
The active power of interconnection corridor actual fed is corrected within the scope of security constraint：
IfThe total active power regulation amount of the generating set is setAccording to
Sensitivity of the regulation performance of each unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to certain
Proportionality coefficient by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
IfThe total active power regulation amount of controllable electric generator group is setAccording to
Sensitivity of the regulation performance of unit with unit on being associated with transmission line of electricity, electrical equipment active power influences, according to certain ratio
Example coefficient is by Δ PGEach unit in the generating set is distributed to, the active-power P of each unit is controlledg, so that
Wherein：ΔPGFor the total active power regulation amount of the generating set, BsFor the coefficient of frequency of interconnected electric power system, BiFor
The coefficient of frequency of control area,WithThe respectively security constraint upper and lower limit in interconnection corridor, PCFor interconnection corridor
The active power of actual fed.
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