CN103617574B - A kind of method and device determining transformer utilization factor upper limit estimated value - Google Patents
A kind of method and device determining transformer utilization factor upper limit estimated value Download PDFInfo
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Abstract
This application discloses a kind of method determining transformer utilization factor upper limit estimated value, described utilization rate upper limit estimated value includes maximum load utilization rate upper limit estimated value and average load utilization upper limit estimated value, and the method includes：Obtain the rated capacity of described transformator；Obtain the maximum delivery power of the actual permission of described transformator；Calculate the constraint factor of described transformator；Calculate described maximum load utilization rate upper limit estimated value, specially calculate the maximum delivery power of the actual permission of described transformator and the ratio of described rated capacity；According to described constraint factor, calculate described average load utilization rate upper limit estimated value.The higher limit that transformer utilization factor can reach can be reflected from the angle of maximum load and average load, the utilization rate for improving transformator provides foundation.
Description
Technical field
The application is related to transformer technology field, more particularly to a kind of side determining transformer utilization factor upper limit estimated value
Method and device.
Background technology
The large-scale power engineering construction of China alleviates the situation of power supply shortage to a great extent in recent years, full
The fast-developing demand to electric power of foot economic society.With the lean level lifting of China's power industry development, meeting
On the premise of the electricity needs of China's rapid growth and guarantee power grid security reliability service, power grid asset utilization rate problem obtains
Increasing attention.Transformer utilization factor is the important embodiment of Electric Power Network Planning construction and operation and management level, carries out transformation
Device utilization rate modeling analysis contribute to preferably excavating the potentiality of transformator conveying capacity, reduce unnecessary construction retrofit throwing
The economic benefit of money, raising power network development quality and electric power enterprise.
Calculating currently for transformer utilization factor mainly includes maximum load utilization rate and average eguivalent load utilization
Two methods, the former is directly to use to convey the peak value of power in period of supervision divided by rated capacity, and the latter is then to use period of supervision
The meansigma methodss of interior conveying power are divided by rated capacity.The two all relies only on equipment actual operating data and is calculated, and does not account for
System operation and part throttle characteristics constrain the maximum it is impossible to intuitively the utilization rate of reflection transformator can reach, and then cannot
Corresponding adjustment is made according to the practical operation situation of transformator.
Content of the invention
In view of this, the embodiment of the present application provides a kind of transformator maximum load computational methods and average load utilization meter
Calculation method, can be with the maximum load utilization rate upper limit estimated value of calculating transformer and average load utilization upper limit estimated value.
To achieve these goals, the technical scheme that the application provides is as follows：
A kind of method determining transformer utilization factor upper limit estimated value, described utilization rate upper limit estimated value includes maximum load
Utilization rate upper limit estimated value and average load utilization upper limit estimated value, the method includes：
Obtain the rated capacity of described transformator；
Obtain the maximum delivery power of the actual permission of described transformator；
Calculate the constraint factor of described transformator；
Calculate described maximum load utilization rate upper limit estimated value, the maximum specially calculating the actual permission of described transformator is defeated
Send the ratio of power and described rated capacity；
According to described constraint factor, calculate described average load utilization rate upper limit estimated value.
Preferably, the maximum delivery power of the actual permission of described transformator is to allow during described transformator actual motion
Big conveying power, the maximum delivery power obtaining the actual permission of described transformator is specially：
Calculate the maximum delivery power of the actual permission of described transformator according to safety and stability computational methods and criterion.
Preferably, the constraint factor calculating described transformator includes：Calculate operation constraint factor, the load of described transformator
Constraint factor and stoppage in transit constraint factor；
The described constraint factor that runs is the actual maximum delivery power allowing and described volume during described transformer station high-voltage side bus
The ratio of constant volume；
Described load constraint factor is the meansigma methodss and described first that in the first Preset Time, described transformator conveys power
In Preset Time, described transformator conveys the ratio of power maximum；
Described stoppage in transit constraint factor is the described transformator normal time run and described the in described first Preset Time
Described transformator uptime, unplanned outage time, the ratio of planned outage time sum in one Preset Time.
Preferably, according to described constraint factor, calculate described average load utilization rate upper limit estimated value and include：
Calculate described operation constraint factor, load constraint factor, the product of stoppage in transit constraint factor.
Preferably, after calculating the maximum load utilization rate upper limit estimated value of described transformator, also include：
Calculate the peak value of actual fed power in described transformer station high-voltage side bus second Preset Time；
According to the rated capacity of described transformator and the peak value of actual fed power in described second Preset Time, calculate institute
State actual max load utilization rate in the second Preset Time, specially：
Calculate the ratio of the peak value of actual fed power and described rated capacity in described second Preset Time.
Preferably, also include after described calculating average load utilization rate upper limit estimated value：
Calculate the actual average load utilization of described transformator in described 3rd Preset Time, specially：
Calculate the volume of the meansigma methodss of described transformator actual fed power and described transformator in described 3rd Preset Time
The ratio of constant volume.
Preferably, calculate in described second Preset Time and also include after actual max load utilization rate：
Calculate the maximum load relative availability of described transformator, specially：
Calculate actual max load utilization rate and the described maximum load utilization rate upper limit in described second Preset Time to estimate
The ratio of value.
Preferably, also include after the actual average load utilization calculating described transformator：
Calculate the average load relative availability of described transformator, specially：
Calculate actual average load utilization and the described average load utilization rate upper limit in described 3rd Preset Time to estimate
The ratio of value.
Preferably, calculate in described second Preset Time and also include after actual max load utilization rate：
Calculate the maximum load utilization rate nargin of described transformator, specially：
Calculate the difference that described maximum load utilization rate upper limit estimated value deducts described actual max load utilization rate gained.
Preferably, also include after the relative availability calculating described transformator：
Calculate the average load utilization rate nargin of described transformator, specially：
Calculate the difference that described average load utilization rate upper limit estimated value deducts described actual average load utilization gained.
The embodiment of the present application additionally provides a kind of device determining transformer utilization factor upper limit estimated value, for analyzing transformation
Maximum load utilization rate upper limit estimated value during device work and average load utilization upper limit estimated value, including：
Rated capacity acquisition module, for obtaining the rated capacity of described transformator；
Maximum delivery power acquisition module, for obtaining the maximum delivery power of the actual permission of described transformator；
Constraint factor computing module, for calculating the constraint factor of described transformator；
Maximum load utilization rate upper limit estimated value computing module, for permitting according to the rated capacity of described transformator and reality
The maximum delivery power permitted, calculates the maximum load utilization rate upper limit estimated value of described transformator, specially calculates described transformation
The maximum delivery power of the actual permission of device and the ratio of described rated capacity.
Average load utilization rate upper limit estimated value computing module, for the constraint factor according to described transformator, calculates institute
State the average load utilization rate upper limit estimated value of transformator.
Preferably, the maximum delivery power of the actual permission of described transformator is to allow during described transformator actual motion
Big conveying power, the maximum delivery power obtaining the actual permission of described transformator is specially：
Calculate the maximum delivery power of the actual permission of described transformator according to safety and stability computational methods and criterion.
Preferably, the constraint factor calculating described transformator includes：Calculate operation constraint factor, the load of described transformator
Constraint factor and stoppage in transit constraint factor；
The described constraint factor that runs is the actual maximum delivery power allowing and described change during described transformer station high-voltage side bus
The ratio of the rated capacity of depressor；
Described load constraint factor is the meansigma methodss and described first that in the first Preset Time, described transformator conveys power
In Preset Time, described transformator conveys the ratio of power maximum；
Described stoppage in transit constraint factor is the described transformator normal time run and described the in described first Preset Time
In one Preset Time described transformator normally run, unplanned outage, the ratio of planned outage time sum.
Preferably, estimate according to the average load utilization rate upper limit that the constraint factor of described transformator calculates described transformator
Value includes：
Calculate described operation constraint factor, load constraint factor, the product of stoppage in transit constraint factor.
Preferably, described device also includes：
Actual max load utilization rate computing module, actual defeated in described transformer station high-voltage side bus second Preset Time for calculating
Send the peak value of power；And the rated capacity according to described transformator and the peak running actual fed power in the second Preset Time
Value, calculates actual max load utilization rate in described second Preset Time, specially：Calculate and run reality in the second Preset Time
The peak value of conveying power and the percentage ratio of the ratio of described rated capacity.
Preferably, described device also includes：
Actual average load utilization computing module, for calculating the reality of described transformator in described 3rd Preset Time
Average load utilization rate, specially：Calculate in described 3rd Preset Time the meansigma methodss of described transformator actual fed power with
The ratio of the rated power of described transformator.
Preferably, described device also includes：
Maximum load relative availability computing module, for calculating the maximum load relative availability of described transformator, tool
Body is：Calculate actual max load utilization rate and described maximum load utilization rate upper limit estimated value in described second Preset Time
Ratio.
Preferably, described device also includes：
Average load relative availability computing module, for calculating the average load relative availability of described transformator, tool
Body is：Calculate the ratio of described actual average load utilization and described average load utilization rate upper limit estimated value.
Preferably, described device also includes：
Maximum load utilization rate nargin computing module, for calculating the maximum load utilization rate nargin of described transformator, tool
Body is：Calculate the difference that described maximum load utilization rate upper limit estimated value deducts described actual max load utilization rate gained.
Preferably, described device also includes：
Average load utilization rate nargin computing module, for calculating the average load utilization rate nargin of described transformator, tool
Body is：
Calculate the difference that described average load utilization rate upper limit estimated value deducts described actual average load utilization gained.
The determination method of the utilization rate upper limit estimated value that the embodiment of the present application provides, by calculating, described transformator is actual to be permitted
The maximum delivery power permitted is worth to maximum load upper limit estimated value with the ratio of described rated capacity, due to the actual maximum allowing
Conveying power is in safety range, and the peak power that transformator can convey is estimated using this maximum load utilization rate upper limit
Value can clearly reflect the peak work capacity of transformator, by compared with the utilization rate in actual moving process, permissible
Obtain the gap between the current working condition of transformator and the peak work capacity of transformator.Simultaneously in average load utilization rate
Limit estimated value contains the impact of the impact, the impact meeting kurtosis and stoppage in transit event of safe operation, can be from averagely negative
Utilization rate in the angle concentrated expression transformator actual motion carrying, intuitively embodies the utilization rate upper limit of transformator, permissible
Understand the different impacts to transformer utilization factor for the constraint factor, can targetedly improve in fact when improving transformer utilization factor
Border conveying power, minimizing peak-valley difference or minimizing unplanned outage time many-side are adjusted, thus targetedly improve becoming
The utilization rate of depressor.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of flow process of the method for determination transformer utilization factor upper limit estimated value that Fig. 1 provides for the embodiment of the present application is illustrated
Figure；
A kind of schematic diagram of the device of transformer utilization factor upper limit estimated value that Fig. 2 provides for the embodiment of the present application.
Specific embodiment
One transformator has the rated capacity of determination, but in actual use, the actual fed power of transformator is
Rated capacity can not possibly be reached, typically using the rated capacity of transformator as conveying power reference value, in analysis transformator
During utilization rate, generally require average load utilization rate and the maximum load utilization rate of analysis transformator, average load utilization rate is
Refer to the ratio that transformator in period of supervision averagely conveys power and conveying power reference value；Maximum load utilization rate refers to period of supervision
Interior transformator conveys the ratio of power peak and conveying power reference value.
It is merely capable of knowing the work shape of transformator by the average load utilization rate and maximum load utilization rate of transformator
State, the embodiment of the present application provides the analysis method of transformer utilization factor upper limit estimated value, including the maximum load utilization rate upper limit
Estimated value and average load utilization upper limit estimated value, transformer utilization factor upper limit estimated value can characterize the utilization rate of transformator
The maximum upper limit that can reach.
In order that those skilled in the art more fully understand the technical scheme in the application, real below in conjunction with the application
Apply the accompanying drawing in example, the enforcement it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present application
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of not making creative work, all should belong to the application protection
Scope.
The embodiment of the present application provides a kind of method determining transformer utilization factor upper limit estimated value, including：
Step 11, obtains the rated capacity of described transformator；
In the embodiment of the present application, need first to determine transformation when analyzing transformator maximum load utilization rate upper limit estimated value
The rated capacity of device, the computational methods of the rated capacity of transformator are prior art, and the application repeats no more.
Step 12, obtains the maximum delivery power of the actual permission of described transformator；
Also need in the embodiment of the present application obtain the maximum delivery power of the actual permission of transformator, the actual permission of transformator
Maximum delivery power be place system safety operation requirement is met according to transformator on the premise of, the maximum of the actual permission of transformator
Conveying power, the maximum delivery power of the actual permission of transformator can calculate described change according to safety and stability computational methods and criterion
The maximum delivery power of the actual permission of depressor, wherein, described safety and stability computational methods include：Static security analysis, short circuit electricity
Stream Security Checking, static state stability calculation, multilayer output feedback network, dynamic stability calculate, voltage stabilization calculate, frequency stable calculate with
And resynchronisation calculates.The actual maximum delivery power allowing can be according to《Power system safety and stability computing technique specification》(DL/
T 1234-2013) the safety and stability computational methods that propose and criterion calculated.Transformator is calculated by above method
The actual maximum delivery power allowing.
Step 13, calculates the constraint factor of described transformator；
In the embodiment of the present application, the constraint factor of calculating transformer includes：Calculate the operation constraint system of described transformator
Number, load constraint factor and stoppage in transit constraint factor；
The described constraint factor that runs is the actual maximum delivery power allowing and described change during described transformer station high-voltage side bus
The ratio of the rated capacity of depressor, running constraint factor is in safe operation from the angle calculation transformator of transformator actual motion
On the premise of the peak power that can the convey ratio in rated capacity, run the calculating of constraint factor and above-mentioned maximum load
The computational methods of utilization rate upper limit estimated value are identical, and the actual maximum delivery power allowing also with safety and stability method and is sentenced
According to calculating.
Described load constraint factor is the meansigma methodss and described first that in the first Preset Time, described transformator conveys power
In Preset Time, described transformator conveys the ratio of power maximum.
Also include in the present embodiment in electrical network residing for calculating transformer due to the peak-valley difference characteristic of load cause to change
The impact of depressor average load utilization rate, can convey work(by during calculating transformer real work in the first Preset Time
The ratio of the maximum of the meansigma methodss of rate and conveying power, that is, in aforementioned calculating transformer maximum load utilization rate upper limit estimated value
While, calculate average load utilization rate upper limit estimated value, can more fully reflect the real work situation of transformator.
Described stoppage in transit constraint factor is the described transformator uptime and described first in described first Preset Time
Described transformator uptime, unplanned outage time, the ratio of planned outage time sum in Preset Time；Stop transport about
Bundle coefficient reflects transformator in actual moving process, the normal ratio shared by time run, and reflects in reality simultaneously
The impact to the normal operation of transformator for the unplanned outage being led to due to planned outage and failure cause in running.
Step 14, calculates described maximum load utilization rate upper limit estimated value, specially calculates the actual permission of described transformator
Maximum delivery power and described rated capacity ratio.
After the rated capacity being calculated transformator and the actual maximum delivery power allowing, by calculating actual permission
Maximum delivery power and rated capacity ratio, obtain maximum load utilization rate upper limit estimated value.This maximum load utilization rate
Upper limit estimated value can be characterized in real process it is considered to the maximum of conveying power, and the utilization rate of transformator can reach
Maximum upper limit, this maximum load utilization rate upper limit estimated value closer to 1, get over by the maximum delivery power of the actual permission of indication transformer
Close to rated capacity.
Step 15, according to described constraint factor, calculates described average load utilization rate upper limit estimated value.
After being calculated the constraint factor of above-mentioned transformator, calculate average load utilization rate upper limit estimated value, specially：Meter
Calculate described operation constraint factor, load constraint factor, the product of stoppage in transit constraint factor.
After be calculated above-mentioned each constraint factor, constraint factor, load constraint factor, stoppage in transit constraint factor will be run
Product is as the average load utilization rate upper limit estimated value of transformator.
The determination method of the utilization rate upper limit estimated value that the embodiment of the present application provides, by calculating, described transformator is actual to be permitted
The maximum delivery power permitted is worth to maximum load upper limit estimated value with the ratio of described rated capacity, due to the actual maximum allowing
Conveying power is in safety range, and the peak power that transformator can convey is estimated using this maximum load utilization rate upper limit
Value can clearly reflect the peak work capacity of transformator, by compared with the utilization rate in actual moving process, permissible
Obtain the gap between the current working condition of transformator and the peak work capacity of transformator.Simultaneously in average load utilization rate
Limit estimated value contains the impact of the impact, the impact meeting kurtosis and stoppage in transit event of safe operation, can be from averagely negative
Utilization rate in the angle concentrated expression transformator actual motion carrying, intuitively embodies the utilization rate upper limit of transformator, permissible
Understand the different impacts to transformer utilization factor for the constraint factor, can targetedly improve in fact when improving transformer utilization factor
Border conveying power, minimizing peak-valley difference or minimizing unplanned outage time many-side are adjusted, thus targetedly improve becoming
The utilization rate of depressor.
In the embodiment of the present application after being calculated maximum load utilization rate upper limit estimated value, can also include：
Calculate the peak value of actual fed power in described transformer station high-voltage side bus second Preset Time；
During transformator actual motion, calculate the peak of transformator actual fed power in the second Preset Time
Value, can from the peak angle of power be reflected in second default between interior transformator real work situation.Here second is pre-
If the time is to distinguish with aforementioned first Preset Time for sake of convenience, certain first Preset Time and the second Preset Time can be
Same a period of time.
After being calculated the peak value of actual fed power in operation the second Preset Time, can also include：
Calculate actual max load utilization rate in described second Preset Time, specially calculate actual in the second Preset Time
The peak value of conveying power and the ratio of transformator rated capacity.
By the peak value of actual fed power in transformer station high-voltage side bus second Preset Time and rated capacity ratio, can obtain
Actual max load utilization rate in the second Preset Time for the transformator, can understand the reality of transformator from the angle of maximum load
Border working condition accounts for the ratio of preferable working condition.
Can also include after being calculated average load utilization rate upper limit estimated value：Calculate described in the 3rd Preset Time
The actual average load utilization of transformator, specially：
Calculate the volume of the meansigma methodss of described transformator actual fed power and described transformator in described 3rd Preset Time
The ratio of constant volume.
Above-mentioned average load utilization rate upper limit estimated value reflects the highest of transformer utilization factor from the angle of mean power
The upper limit, be under theory state transformator using the maximum that can reach, and in real work, the actual average of transformator is born
Carry utilization rate often due to the restriction of actual environment can not reach the upper limit estimated value of utilization rate, the embodiment of the present application can also be counted
Calculate the meansigma methodss of described transformator actual fed power and the hundred of the ratio of rated value of described transformator in the second Preset Time
Divide ratio, obtain the practical efficiency in transformator actual moving process, intuitively show the real work situation of transformator.
After the actual max load utilization rate being calculated in the second Preset Time, can also include：
Calculate described transformator maximum load relative availability, specially calculate actual maximum in described second Preset Time
Load utilization and the ratio of described maximum load utilization rate upper limit estimated value.
Calculate actual max load utilization rate and the aforesaid maximum load utilization rate upper limit in above-mentioned second Preset Time to estimate
The percentage ratio of the ratio of evaluation, obtains in transformer station high-voltage side bus second Preset Time, and the maximum of actual fed power is permitted actual
The maximum load permitted conveys the accounting in power, due to transformator in actual motion real process it is impossible to all of change
The rated capacity of depressor, and the above-mentioned calculated actual maximum delivery power allowing is the actual maximum functional of transformator
Ability, the maximum load relative availability calculating of transformator is real closest to transformator in transformator actual moving process
The utilization rate of border running status.
Above-mentioned Preset Time is the time being selected according to practical situation, and the application does not do specifically to the length of Preset Time
Limit.
After being calculated the actual average load utilization of transformator, can also include：
Calculate the average load relative availability of described transformator, specially：
Calculate actual average load utilization and the described average load utilization rate upper limit in described 3rd Preset Time to estimate
The ratio of value.
By calculating the percentage of actual average load utilization and the ratio of described average load utilization rate upper limit estimated value
Than obtaining accounting for of transformator actual average power utilization and average load utilization rate upper limit estimated value in the second Preset Time
Than, this relatively average load utilization numerical value closer to 100%, the actual motion state showing transformator is closer to preferable shape
State.
After being calculated the actual max load utilization rate of transformator, due to during transformator real work, due to reality
The impact of working environment, is not at fully loaded working condition, and its utilization rate is also not up to absolutely, and the application is implemented
Example can also include：
Calculate the maximum load utilization rate nargin of described transformator, specially calculate the described maximum load utilization rate upper limit and estimate
Evaluation and the difference of described actual max load utilization rate.
By calculate maximum load utilization rate nargin it can be realized that transformator real work utilization rate with can reach
Utilization rate upper limit estimated value between gap, get more information about between transformator actual motion and desired operation
Gap, provides reference frame for improving transformator maximum load utilization rate.
After being calculated average load utilization rate upper limit estimated value and actual average load utilization, can also include counting
Calculate the average load utilization rate nargin of described transformator, specially：
Calculate the difference of described average load utilization rate upper limit estimated value and described actual average load utilization.
This average load utilization rate nargin less closer to 0, show utilization rate in transformator real work closer to profit
With the maximum upper limit of rate, can intuitively characterize the real work situation of transformator.
As follows by the above-mentioned calculating process of computing formula：Can set in the embodiment of the present application the rated capacity of transformator as
pmax；
Calculating transformer maximum load utilization rate upper limit estimated value CUMEpeak, computing formula is：
P in formulalim-peakRefer to the maximum delivery power of the actual permission of transformator.
Calculating transformer average load utilization rate upper limit estimated value CUMEavg, including：
(1) calculate and run constraint factor λ1, computing formula is：
(2) calculated load constraint factor λ2, computing formula is：
Wherein PPeak valueConvey the maximum of power, P for transformator in the first Preset TimeAveragelyFor transformation in the first Preset Time
Device conveys the meansigma methodss of power.
(3) calculate stoppage in transit constraint factor λ3, computing formula is：
Wherein, T1The time normally run in the first Preset Time for transformator, T2 is non-in the first Preset Time
The planned outage time, T3 is the planned outage time in the first Preset Time.
Comprehensive all kinds of constraint factors, are calculated CUMEavg, computing formula is：
CUMEavg=λ1×λ2×λ3
According to transformator actual fed power in the second Preset Time, calculate the peak value of actual fed power, and according to
Transformator actual fed power in 3rd Preset Time, calculates the meansigma methodss of actual fed power, is expressed as PpeakWithAccording to the aforementioned P obtainingmaxIt is worth into line transformer actual average load utilization and actual max load utilization rate
Calculate, computing formula is：
Transformator relative availability computing formula is：
Or：
Transformer utilization factor nargin computing formula is：
Maximum load utilization rate nargin=CUMEpeak- actual max load utilization rate
Average load utilization rate nargin=CUMEavg- actual average load utilization
The embodiment of the present application additionally provides a kind of device determining transformer utilization factor upper limit estimated value, for analyzing transformation
Maximum load utilization rate upper limit estimated value during device work and average load utilization upper limit estimated value, including：
Rated capacity acquisition module 100, for obtaining the rated capacity of described transformator；
Maximum delivery power acquisition module 200, for obtaining the maximum delivery power of the actual permission of described transformator；
Constraint factor computing module 300, for calculating the constraint factor of described transformator；
Maximum load utilization rate upper limit estimated value computing module 400, for according to the rated capacity of described transformator and reality
The maximum delivery power that border allows, calculates the maximum load utilization rate upper limit estimated value of described transformator, specially calculates described
The maximum delivery power of the actual permission of transformator and the ratio of described rated capacity.
Average load utilization rate upper limit estimated value computing module 500, for the constraint factor according to described transformator, calculates
The average load utilization rate upper limit estimated value of described transformator.
The maximum delivery power of the actual permission of described transformator is the maximum delivery allowing during described transformator actual motion
Power, the maximum delivery power obtaining the actual permission of described transformator is specially：
Calculate the maximum delivery power of the actual permission of described transformator according to safety and stability computational methods and criterion.
The constraint factor calculating described transformator includes：Calculate operation constraint factor, the load constraint system of described transformator
Number and stoppage in transit constraint factor；
The described constraint factor that runs is the actual maximum delivery power allowing and described change during described transformer station high-voltage side bus
The ratio of the rated capacity of depressor；
Described load constraint factor is the meansigma methodss and described first that in the first Preset Time, described transformator conveys power
In Preset Time, described transformator conveys the ratio of power maximum；
Described stoppage in transit constraint factor is the described transformator normal time run and described the in described first Preset Time
In one Preset Time described transformator normally run, unplanned outage, the ratio of planned outage time sum.
Include according to the average load utilization rate upper limit estimated value that the constraint factor of described transformator calculates described transformator：
Calculate described operation constraint factor, load constraint factor, the product of stoppage in transit constraint factor.
Described device also includes：
Actual max load utilization rate computing module, actual defeated in described transformer station high-voltage side bus second Preset Time for calculating
Send the peak value of power；And the rated capacity according to described transformator and the peak running actual fed power in the second Preset Time
Value, calculates actual max load utilization rate in described second Preset Time, specially：Calculate and run reality in the second Preset Time
The peak value of conveying power and the percentage ratio of the ratio of described rated capacity.
Described device also includes：
Actual average load utilization computing module, for calculating the reality of described transformator in described 3rd Preset Time
Average load utilization rate, specially：Calculate in described 3rd Preset Time the meansigma methodss of described transformator actual fed power with
The ratio of the rated power of described transformator.
Described device also includes：
Maximum load relative availability computing module, for calculating the maximum load relative availability of described transformator, tool
Body is：Calculate actual max load utilization rate and described maximum load utilization rate upper limit estimated value in described second Preset Time
Ratio.
Described device also includes：
Average load relative availability computing module, for calculating the average load relative availability of described transformator, tool
Body is：Calculate the ratio of described actual average load utilization and described average load utilization rate upper limit estimated value.
Described device also includes：
Maximum load utilization rate nargin computing module, for calculating the maximum load utilization rate nargin of described transformator, tool
Body is：Calculate the difference that described maximum load utilization rate upper limit estimated value deducts described actual max load utilization rate gained.
Described device also includes：
Average load utilization rate nargin computing module, for calculating the average load utilization rate nargin of described transformator, tool
Body is：
Calculate the difference that described average load utilization rate upper limit estimated value deducts described actual average load utilization gained.
It should be noted that herein, term " inclusion ", "comprising" or its any other variant are intended to non-row
The comprising of his property, so that including a series of process of key elements, method, article or equipment not only include those key elements, and
And also include other key elements of being not expressly set out, or also include intrinsic for this process, method, article or equipment institute
Key element.In the absence of more restrictions, the key element being limited by sentence "including a ..." is it is not excluded that including institute
Also there is other identical element in process, method, article or the equipment of stating key element.
It should be noted that the above is only a part of preferred embodiment of technical scheme, make
Those skilled in the art can fully understand or realize the application, rather than whole embodiments, as defined herein general
Principle can be realized in the case of without departing from spirit herein or scope in other embodiments.Therefore, based on above reality
Apply example, for those skilled in the art, without departing from the application principle, do not make creative work premise
Under, multiple obvious modifications can also be made and retouch, the every other enforcement being obtained by these modifications and retouching
Example, can be applied to technical scheme, these do not affect the realization of the application, all should belong to the protection of the application
Scope.Therefore, the application is not intended to be limited to the embodiments shown herein, and is intended to accord with disclosed herein former
Reason and the consistent scope the widest of features of novelty.
Above the application is described in detail, used herein can specific case to the principle of the application and embodiment party
Formula is set forth, and the explanation of above example is only intended to help and understands the present processes and its core concept, meanwhile, right
In one of ordinary skill in the art, according to the thought of the application, all have change in specific embodiments and applications
Part, in sum, this specification content should not be construed as the restriction to the application.
Claims (16)
1. a kind of method determining transformer utilization factor upper limit estimated value is it is characterised in that described utilization rate upper limit estimated value bag
Include maximum load utilization rate upper limit estimated value and average load utilization upper limit estimated value, the method includes：
Obtain the rated capacity of described transformator；
Obtain the maximum delivery power of the actual permission of described transformator；
Calculate the constraint factor of described transformator；
Calculate described maximum load utilization rate upper limit estimated value, specially calculate the maximum delivery work(of the actual permission of described transformator
Rate and the ratio of described rated capacity；
According to described constraint factor, calculate described average load utilization rate upper limit estimated value；
The constraint factor calculating described transformator includes：Calculate the operation constraint factor of described transformator, load constraint factor and
Stoppage in transit constraint factor；
The described constraint factor that runs is the actual maximum delivery power allowing and described specified appearance during described transformer station high-voltage side bus
The ratio of amount；
Described load constraint factor is that the meansigma methodss of described transformator conveying power in the first Preset Time are preset with described first
In time, described transformator conveys the ratio of power maximum；
Described stoppage in transit constraint factor is that the time of the normal operation of described transformator in described first Preset Time is pre- with described first
If described transformator uptime, unplanned outage time, the ratio of planned outage time sum in the time；
According to described constraint factor, calculate described average load utilization rate upper limit estimated value and include：
Calculate described operation constraint factor, load constraint factor, the product of stoppage in transit constraint factor.
2. method according to claim 1 is it is characterised in that the maximum delivery power of the actual permission of described transformator is institute
State the maximum delivery power allowing during transformator actual motion, the maximum delivery power obtaining the actual permission of described transformator is concrete
For：
Calculate the maximum delivery power of the actual permission of described transformator according to safety and stability computational methods and criterion.
3. method according to claim 1 is it is characterised in that the maximum load utilization rate upper limit calculating described transformator is estimated
After evaluation, also include：
Calculate the peak value of actual fed power in described transformer station high-voltage side bus second Preset Time；
According to the rated capacity of described transformator and the peak value of actual fed power in described second Preset Time, calculate described the
Actual max load utilization rate in two Preset Times, specially：
Calculate the ratio of the peak value of actual fed power and described rated capacity in described second Preset Time.
4. method according to claim 1 is it is characterised in that go back after described calculating average load utilization rate upper limit estimated value
Including：
Calculate the actual average load utilization of described transformator in the 3rd Preset Time, specially：
Calculate the specified appearance of the meansigma methodss of described transformator actual fed power and described transformator in described 3rd Preset Time
The ratio of amount.
5. method according to claim 3 is it is characterised in that calculate actual max load profit in described second Preset Time
Also included with after rate：
Calculate the maximum load relative availability of described transformator, specially：
Calculate actual max load utilization rate and described maximum load utilization rate upper limit estimated value in described second Preset Time
Ratio.
6. method according to claim 4 it is characterised in that calculate described transformator actual average load utilization after
Also include：
Calculate the average load relative availability of described transformator, specially：
Calculate actual average load utilization and described average load utilization rate upper limit estimated value in described 3rd Preset Time
Ratio.
7. method according to claim 3 is it is characterised in that calculate actual max load profit in described second Preset Time
Also included with after rate：
Calculate the maximum load utilization rate nargin of described transformator, specially：
Calculate the difference that described maximum load utilization rate upper limit estimated value deducts described actual max load utilization rate gained.
8. method according to claim 4 is it is characterised in that also include after the relative availability of the described transformator of calculating：
Calculate the average load utilization rate nargin of described transformator, specially：
Calculate the difference that described average load utilization rate upper limit estimated value deducts described actual average load utilization gained.
9. a kind of device determining transformer utilization factor upper limit estimated value is it is characterised in that be used for analyzing during transformator work
Maximum load utilization rate upper limit estimated value and average load utilization upper limit estimated value, including：
Rated capacity acquisition module, for obtaining the rated capacity of described transformator；
Maximum delivery power acquisition module, for obtaining the maximum delivery power of the actual permission of described transformator；
Constraint factor computing module, for calculating the constraint factor of described transformator；
Maximum load utilization rate upper limit estimated value computing module, for according to the rated capacity of described transformator and actual allow
Maximum delivery power, calculates the maximum load utilization rate upper limit estimated value of described transformator, specially calculates described transformator real
Maximum delivery power and the ratio of described rated capacity that border allows；
Average load utilization rate upper limit estimated value computing module, for the constraint factor according to described transformator, calculates described change
The average load utilization rate upper limit estimated value of depressor；
The constraint factor calculating described transformator includes：Calculate the operation constraint factor of described transformator, load constraint factor and
Stoppage in transit constraint factor；
The described constraint factor that runs is the actual maximum delivery power allowing and described transformator during described transformer station high-voltage side bus
Rated capacity ratio；
Described load constraint factor is that the meansigma methodss of described transformator conveying power in the first Preset Time are preset with described first
In time, described transformator conveys the ratio of power maximum；
Described stoppage in transit constraint factor is that the time of the normal operation of described transformator in described first Preset Time is pre- with described first
If in the time, described transformator normally runs, unplanned outage, the ratio of planned outage time sum；
Include according to the average load utilization rate upper limit estimated value that the constraint factor of described transformator calculates described transformator：
Calculate described operation constraint factor, load constraint factor, the product of stoppage in transit constraint factor.
10. device according to claim 9 is it is characterised in that the maximum delivery power of the actual permission of described transformator is
The maximum delivery power allowing during described transformator actual motion, obtains the maximum delivery power tool of the actual permission of described transformator
Body is：
Calculate the maximum delivery power of the actual permission of described transformator according to safety and stability computational methods and criterion.
11. devices according to claim 9 are it is characterised in that described device also includes：
Actual max load utilization rate computing module, for calculating actual fed work(in described transformer station high-voltage side bus second Preset Time
The peak value of rate；And the rated capacity according to described transformator and the peak value running actual fed power in the second Preset Time,
Calculate actual max load utilization rate in described second Preset Time, specially：Calculate actual defeated in operation the second Preset Time
Send the percentage ratio of the peak value of power and the ratio of described rated capacity.
12. devices according to claim 9 are it is characterised in that described device also includes：
Actual average load utilization computing module, for calculating the actual average load of described transformator in the 3rd Preset Time
Utilization rate, specially：Calculate the meansigma methodss of described transformator actual fed power and described transformation in described 3rd Preset Time
The ratio of the rated power of device.
13. devices according to claim 11 are it is characterised in that described device also includes：
Maximum load relative availability computing module, for calculating the maximum load relative availability of described transformator, specially：
Calculate the ratio of actual max load utilization rate and described maximum load utilization rate upper limit estimated value in described second Preset Time.
14. devices according to claim 12 are it is characterised in that described device also includes：
Average load relative availability computing module, for calculating the average load relative availability of described transformator, specially：
Calculate the ratio of described actual average load utilization and described average load utilization rate upper limit estimated value.
15. devices according to claim 11 are it is characterised in that described device also includes：
Maximum load utilization rate nargin computing module, for calculating the maximum load utilization rate nargin of described transformator, specially：
Calculate the difference that described maximum load utilization rate upper limit estimated value deducts described actual max load utilization rate gained.
16. devices according to claim 12 are it is characterised in that described device also includes：
Average load utilization rate nargin computing module, for calculating the average load utilization rate nargin of described transformator, specially：
Calculate the difference that described average load utilization rate upper limit estimated value deducts described actual average load utilization gained.
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