CN113792995A - Method, device, equipment and storage medium for determining power resource dominance degree - Google Patents
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Abstract
The application relates to the technical field of electric power, and provides a method, a device, equipment and a medium for determining the dominance degree of electric power resources. The power resource management method and the power resource management system can objectively, accurately and practically evaluate the power resource management degree of the power resource provider. The method comprises the following steps: determining a blocked power transmission line at a set moment, acquiring a tidal current alleviation demand of the blocked power transmission line, acquiring a tidal current alleviation quantity of a generator set belonging to a power resource provider in the blocked power transmission line, then obtaining a tidal current alleviation factor of the generator set of the power resource provider to the blocked power transmission line at the set moment according to a ratio of the tidal current alleviation quantity to the tidal current alleviation demand, and finally determining the power resource domination degree of the power resource provider based on the tidal current alleviation factor.
Description
Technical Field
The present application relates to the field of power technologies, and in particular, to a method and an apparatus for determining a power resource dominance degree, a computer device, and a storage medium.
Background
At present, the power resource dominance degree quantization method is mainly measured by the supply and demand relationship of power resources, for example, by calculating and comparing the power resources that can be supplied by power resource providers such as a single power plant or a group with the total power resource demand value, and determining the power resource dominance degree of each power resource provider according to the proportional value.
However, the power resources are greatly different from general resources, the power resources cannot be stored, only the real-time supply and demand balance can be maintained, and only the power resources can be transmitted through a power grid, the capacity of a single line, section or node in the power grid for bearing power is limited, the transmission of electric energy is similar to an expressway, but is far more complex than the expressway, and the power resources include a plurality of boundary condition limitations such as current limit, blockage, tide and thermal limit. Therefore, the conventional techniques have low accuracy in evaluating the power resource dominance degree of the power resource providers, and cannot accurately and objectively reflect the power resource dominance degree of each power resource provider.
Disclosure of Invention
In view of the above, it is necessary to provide a method, an apparatus, a computer device and a storage medium for determining a power resource dominance degree in order to solve the above technical problems.
A method of determining a degree of dominance of a power resource, the method comprising:
determining a blocked power transmission line at a set moment, and acquiring a tidal current alleviation demand of the blocked power transmission line;
obtaining a tidal current alleviation quantity of a generator set belonging to a power resource provider in the blocked power transmission line;
according to the ratio of the flow alleviation amount to the flow alleviation demand amount, obtaining a flow alleviation factor of the power generation unit of the power resource provider to the blocked power transmission line at the set moment;
determining a power resource dominance degree of the power resource provider based on the power flow mitigation factor.
An apparatus for determining a degree of dominance of a power resource, comprising:
the device comprises a blocking line determining module, a blocking line determining module and a control module, wherein the blocking line determining module is used for determining a blocking power transmission line at a set moment and acquiring a load flow relieving demand of the blocking power transmission line;
the alleviation amount acquisition module is used for acquiring the flow alleviation amount of the generator set belonging to the power resource provider in the blocked power transmission line;
a mitigation factor obtaining module, configured to obtain a power flow mitigation factor of the blocking power transmission line at the set time by a generator set of the power resource provider according to a ratio of the power flow mitigation amount to the power flow mitigation demand amount;
and the degree determining module is used for determining the power resource domination degree of the power resource provider based on the power flow relieving factor.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
determining a blocked power transmission line at a set moment, and acquiring a tidal current alleviation demand of the blocked power transmission line; obtaining a tidal current alleviation quantity of a generator set belonging to a power resource provider in the blocked power transmission line; according to the ratio of the flow alleviation amount to the flow alleviation demand amount, obtaining a flow alleviation factor of the power generation unit of the power resource provider to the blocked power transmission line at the set moment; determining a power resource dominance degree of the power resource provider based on the power flow mitigation factor.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
determining a blocked power transmission line at a set moment, and acquiring a tidal current alleviation demand of the blocked power transmission line; obtaining a tidal current alleviation quantity of a generator set belonging to a power resource provider in the blocked power transmission line; according to the ratio of the flow alleviation amount to the flow alleviation demand amount, obtaining a flow alleviation factor of the power generation unit of the power resource provider to the blocked power transmission line at the set moment; determining a power resource dominance degree of the power resource provider based on the power flow mitigation factor.
The method, the device, the equipment and the medium for determining the power resource dominance degree determine a blocking power transmission line at a set moment, acquire a flow alleviation demand of the blocking power transmission line, acquire a flow alleviation quantity of a generator set belonging to a power resource provider in the blocking power transmission line, then obtain a flow alleviation factor of the generator set of the power resource provider to the blocking power transmission line at the set moment according to a ratio of the flow alleviation quantity to the flow alleviation demand, and finally determine the power resource dominance degree of the power resource provider based on the flow alleviation factor. The scheme is guided by the problem of line blockage in the actual power transmission scene, and the power resource dominance degree of each power resource provider on different lines at different time is evaluated based on a quantitative calculation method considering the line blockage and the power flow of the power grid, so that the power resource dominance degree of the power resource providers can be evaluated more objectively, accurately and practically.
Drawings
FIG. 1 is a flow chart illustrating a method for determining power resource dominance in one embodiment;
FIG. 2 is a block diagram showing the structure of a power resource dominance determination device according to an embodiment;
FIG. 3 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The present application relates to a partial concept explanation:
tidal current: in electric power engineering, power flow refers to the distribution of voltage (including amplitude and phase angle), active power, reactive power and the like at each part of a power grid;
line blocking: the transmission power of the transmission line has an upper limit, and when the power passing through the transmission line exceeds the safe load rate proportion of the maximum transmission capacity of the transmission line, the transmission line can be considered to be blocked;
sensitivity factor: the method is used for quantitatively evaluating the influence factor of the power transmission line by the generator set connected with the power transmission line, and can be generally defined as the change value of the corresponding power transmission line tidal current value when the power of the generator set rises by 1 unit of power, and the value can be positive or negative or zero;
upstream/downstream units: the unit with a positive (upstream) or negative (downstream) sensitivity factor for a certain transmission line is referred to;
demand for tidal current mitigation: the power transmission line with the line blockage needs to reduce the tidal current value if the power transmission line needs to fall back to the proportion of the safe load rate or below the safe load rate;
tidal current alleviation amount: the numerical value of reducing the tidal current value on the specific power transmission line by changing the output value of the generator set;
a power flow mitigation factor: refers to the degree of contribution of a particular group to the demand for flow mitigation of a blocked line.
The method for determining the power resource dominance degree can be applied to computer equipment such as terminals and servers. The terminal can be, but is not limited to, various personal computers, notebook computers, smart phones and tablet computers, and the server can be implemented by an independent server or a server cluster formed by a plurality of servers.
In one embodiment, as shown in fig. 1, a method for determining the degree of power resource dominance is provided, which may include the steps of:
step S101, determining a blocked power transmission line at a set moment, and acquiring a load flow alleviation demand of the blocked power transmission line.
The method mainly comprises the steps of determining a blocked power transmission line at a certain moment and obtaining the load flow alleviation demand of the power transmission line.
In one embodiment, the determining the blocking power transmission line at the set time in step S101 specifically includes:
acquiring the clear tide current value of the power transmission line aiming at the set moment; determining the maximum load capacity of the power transmission line and a preset safe load rate ratio; and if the clearing load flow value is greater than or equal to the product of the maximum load capacity and the preset safe load rate ratio, determining the power transmission line as the blocked power transmission line at the set moment.
Specifically, when determining a congested line, at a certain set time t, the determination may be made based on the relationship shown by the following formula:
FLi≥CLi×λ
wherein, FLiRepresenting the output current value (day ahead/day in/real time output, with/without constraint output) of the transmission line i, CLiRepresenting the maximum load capacity of the transmission line i, λ is a specified safe load ratio, typically between 0.85 and 0.95. Specifically, if the relationship is established as shown in the above formula, the clear moisture flow value F is obtainedLiGreater than or equal to the maximum load capacity CLiAnd the product of the preset safe load ratio lambda is used for determining that the power transmission line i is a blocked power transmission line.
Further, in an embodiment, the obtaining of the power flow alleviation demand of the blocked power transmission line in step S101 specifically includes: and obtaining the tidal current alleviation demand according to the difference value of the product of the clear tidal current value and the maximum load capacity and the preset safe load rate ratio.
Specifically, if it is determined that the power transmission line i is a blocked power transmission line, the load flow alleviation demand R can be calculated by the following formulaLi：
RLi＝FLi-CLi×λ。
That is, when the transmission line i is determined to be a blocked transmission line, the clear tide current value F of the transmission line i can be obtainedLiMaximum load capacity C with transmission line iLiThe product of the load factor and the safety load ratio lambda is subjected to difference making to obtain the tidal current alleviation demand RLi。
Step S102, obtaining a load flow alleviation amount of a generator set belonging to a power resource provider in a blocked power transmission line;
the method mainly comprises the step of calculating the load flow alleviation amount of the generator set belonging to the power resource provider in the blocked power transmission line. The generator set belonging to the power resource provider in the blocking power transmission line can be an upstream generator set or a downstream generator set.
In one embodiment, when the generator set belonging to the power resource provider is an upstream generator set, step S102 specifically includes: acquiring sensitivity factors of a generator set of a power resource provider to a blocked power transmission line; acquiring a first difference value between the output upper limit value of a generator set of a power resource provider and the output clearance of the generator set; and obtaining the power flow alleviation amount according to the product of the sensitivity factor and the first difference value.
Specifically, for the upstream unit j, the load flow alleviation amount S can be calculated by the following formulaUji：
SUji＝σij×(Pmax-Pj)
Wherein σijRepresenting the sensitivity factor, P, of the upstream unit j to the blocked transmission line imaxUpper limit of output, P, of generator set for power resource providerjFor clearing the power (day ahead/day in/real time clearing, with/without restriction clearing, but the specific determination of the clear moisture flow value F of the blocked line in step S101LiBelonging to the same set of clear fruiting). That is, the embodiment obtains the sensitivity factor σ of the generator set of the power resource provider to the blocking transmission line iijAcquiring the upper limit value P of the output of the generator set of the power resource providermaxThe discharge and discharge force P of the generator setjFirst difference (P) ofmax-Pj) Then according to the sensitivity factor σijWith the first difference (P)max-Pj) The product of the two is used to obtain the power flow alleviation quantity SUji。
In another embodiment, when the generator set belonging to the power resource provider is a downstream generator set, step S102 specifically includes: acquiring sensitivity factors of the generator set to the blocked power transmission line; acquiring a second difference value between the output lower limit value of the generator set and the output clear output of the generator set; and obtaining the power flow alleviation amount according to the product of the sensitivity factor and the second difference value.
Specifically, for the downstream unit j, the load flow alleviation amount S can be calculated by the following formulaUji：
SUji＝σij×(Pmin-Pj)
Wherein σijRepresenting the sensitivity factor, P, of the downstream unit j to the blocked transmission line iminLower limit of output, P, of a generator set for a provider of electrical power resourcesjFor clearing the power (day ahead/day in/real time clearing, with/without restriction clearing, but the specific determination of the clear moisture flow value F of the blocked line in step S101LiBelonging to the same set of clear fruiting). That is, the embodiment obtains the sensitivity factor σ of the generator set of the power resource provider to the blocking transmission line iijObtaining the lower limit value P of the output of the generator set of the power resource providerminThe discharge and discharge force P of the generator setjSecond difference (P) ofmin-Pj) Then according to the sensitivity factor σijAnd a second difference (P)min-Pj) The product of the two is used to obtain the power flow alleviation quantity SUji。
Step S103, obtaining a power flow relieving factor of a generator set of a power resource provider to a blocked power transmission line at a set moment according to the ratio of the power flow relieving quantity to the power flow relieving demand quantity;
specifically, in this step, a power flow mitigation factor of a generator set j of the power resource provider to a blocking power transmission line i at a set time can be calculated according to the following formula:
wherein RSIjiAnd (4) providing the generator set j with the power flow relieving factor of the blocked transmission line i at the set moment.
And step S104, determining the power resource domination degree of the power resource provider based on the power flow alleviation factor.
The power resource dominance degree of a power resource provider can be determined according to the specific size of the power flow mitigation factor, the larger the power flow mitigation factor is, the larger the power resource dominance degree is generally considered, and the smaller the power flow mitigation factor is, the smaller the power resource dominance degree is generally considered.
The method for determining the power resource domination degree determines a blocking power transmission line at a set moment, obtains a flow alleviation demand of the blocking power transmission line, obtains a flow alleviation quantity of a generator set belonging to a power resource provider in the blocking power transmission line, obtains a flow alleviation factor of the generator set of the power resource provider to the blocking power transmission line at the set moment according to a ratio of the flow alleviation quantity to the flow alleviation demand, and finally determines the power resource domination degree of the power resource provider based on the flow alleviation factor. The scheme is guided by the problem of line blockage in the actual power transmission scene, and the power resource dominance degree of each power resource provider on different lines at different time is evaluated based on a quantitative calculation method considering the line blockage and the power flow of the power grid, so that the power resource dominance degree of the power resource providers can be evaluated more objectively, accurately and practically.
In some embodiments, step S104 specifically includes: determining a plurality of preset value intervals for representing different power resource domination degrees, and obtaining the power resource domination degree of a power resource provider according to the preset value interval in which the power flow mitigation factor falls.
The method mainly comprises the steps of quantitatively evaluating the power resource dominance degree of a power resource provider on a specific blocking power transmission line i at a single set time t, and evaluating a load flow alleviation factor RSI obtained through calculationjiAnd then the implementation can be realized. Specifically, the present embodiment may obtain a plurality of preset value intervals for representing different power resource dominance degrees, for example, a preset value interval greater than or equal to 1, a preset value interval greater than b and less than 1, a preset value interval greater than a and less than b, and a preset value interval less than a, where a and b are specific values between 0 and 1, and a is less than b. Based on this:
current trend mitigation factor RSIjiIs more than or equal to 1, doesDetermining that the power resource supply party has a great degree of dominance on the power resources of the blocked power transmission line i, and has dominance on the blocked power transmission line i; when b < RSIjiIf the number of the blocked transmission lines i is less than 1, determining that the power resource provider has certain dominance to the blocked transmission lines i; when a < RSIjiIf yes, determining that the power resource provider has less dominance on the blocked power transmission line i; current trend mitigation factor RSIjiAnd (a) determining that the power resource provider has no dominance on the blocked power transmission line i.
In some other embodiments, step S104 specifically includes:
the method comprises the steps that a power flow alleviation amount and a power flow alleviation factor of a generator set of a power resource provider are obtained for each blocked power transmission line at each set moment in a set time period; inputting the power flow alleviation amount and the power flow alleviation factor of each blocked power transmission line of each set moment in a set time period into a power resource domination degree evaluation model by a generator set to obtain the power resource domination degree output by the power resource domination degree evaluation model; the power resource dominance degree evaluation model comprises the following steps:
wherein, PFjIndicating the power resource dominance degree of a power resource provider, T indicating a set period of time, i indicating the number of each blocked transmission line, SUjiRepresenting the amount of tidal Current remission, RSIjiRepresenting a power flow mitigation factor.
In this embodiment, after the power flow mitigation amount and the power flow mitigation factor of the unit pair of lines are calculated for a plurality of times within one time period T, the data may be integrated by using the power resource dominance degree evaluation model shown above and the final power resource dominance degree PF may be calculatedj. The embodiment mainly can realize the evaluation of the power resource dominance degree of each power resource provider involved in the calculation of all the blocked power transmission lines in a time period T, and specifically can evaluate the corresponding power resource dominance degree PFjImplementation, e.g. computable andpower resource domination degree PF according to each power resource providerjThe numerical values are sequenced, so that the magnitude of the power resource dominance degree of each power resource provider on all the blocked power transmission lines in the whole period can be obtained, and the power resource dominance degree of each power resource provider can be quantitatively evaluated.
In the present application, on the whole, the limitation that the method for evaluating the dominance degree of the power resource by using the power resource supply and demand relationship in the conventional technology lacks practical consideration on the property of the power resource and the calculation result is static is broken through, and the dominance degree characterization result of each power resource provider dynamically changing in time and space dimensions can be obtained by calculating the power resource provider judgment with different dominance degrees on different blocked lines in different time periods. According to the method, the degree of dominance of the power resource providers to different lines at different time can be evaluated by considering the line blockage and the power grid load flow, and the degree of dominance of the power resources of each power resource provider at a period can be comprehensively evaluated according to a dynamic calculation result set at the period, so that the degree of dominance of the power resources of the power resource providers can be accurately, objectively and practically shown.
It should be understood that, although the steps in the above flowcharts are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the above flowcharts may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or the stages is not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a part of the steps or the stages in other steps.
In one embodiment, as shown in fig. 2, there is provided an apparatus for determining a degree of power resource dominance, and the apparatus 200 may include:
the blocking line determining module 201 is configured to determine a blocking power transmission line at a set time, and obtain a power flow alleviation demand of the blocking power transmission line;
a alleviation amount obtaining module 202, configured to obtain a flow alleviation amount of a generator set belonging to a power resource provider in the blocking power transmission line;
a mitigation factor obtaining module 203, configured to obtain, according to a ratio of the power flow mitigation amount to a power flow mitigation demand amount, a power flow mitigation factor of the blocking power transmission line at the set time by a generator set of the power resource provider;
a degree determining module 204, configured to determine a power resource dominance degree of the power resource provider based on the power flow mitigation factor.
In an embodiment, the blocking line determining module 201 is configured to obtain a clear tide current value of the power transmission line for the set time; determining the maximum load capacity of the power transmission line and a preset safe load rate ratio; and if the output clear tide current value is larger than or equal to the product of the maximum load capacity and a preset safe load rate ratio, determining the power transmission line as the blocked power transmission line at the set moment.
In an embodiment, the blocking route determining module 201 is configured to obtain the tidal current alleviation demand according to a difference between the output tidal current value and a product of the maximum load capacity and a preset safe load rate ratio.
In one embodiment, the generator set belonging to the power resource provider is an upstream set; a mitigation amount obtaining module 202, configured to obtain a sensitivity factor of the generator set to the blocked power transmission line; acquiring a first difference value between the output upper limit value of the generator set and the output clearance of the generator set; and obtaining the power flow alleviation amount according to the product of the sensitivity factor and the first difference value.
In one embodiment, the generator set belonging to the power resource provider is a downstream set; a mitigation amount obtaining module 202, configured to obtain a sensitivity factor of the generator set to the blocked power transmission line; acquiring a second difference value between the output lower limit value of the generator set and the output clear output of the generator set; and obtaining the power flow alleviation amount according to the product of the sensitivity factor and the second difference value.
In one embodiment, the degree determining module 204 is configured to determine a plurality of preset value intervals for representing different power resource dominance degrees; and obtaining the power resource domination degree of the power resource provider according to the preset value interval in which the power flow mitigation factor falls.
In one embodiment, the degree determining module 204 is configured to obtain a power flow alleviation amount and a power flow alleviation factor of a generator set of the power resource provider for each blocked power transmission line at each set time within a set time period; inputting the power flow alleviation amount and the power flow alleviation factor of each blocked power transmission line of the generator set at each set moment in a set time period into a power resource domination degree evaluation model to obtain the power resource domination degree output by the power resource domination degree evaluation model; wherein the power resource dominance degree evaluation model is as follows:
wherein, PFjIndicating the power resource domination degree of the power resource provider, T indicating the set time period, i indicating the serial number of each blocked transmission line, SUjiRepresenting the amount of tidal current remission, RSIjiRepresenting the power flow mitigation factor.
For specific limitations of the determining device regarding the degree of dominance of the power resource, reference may be made to the above limitations of the determining method regarding the degree of dominance of the power resource, and details thereof are not repeated herein. The modules in the above-mentioned device for determining the degree of dominance of power resources may be implemented in whole or in part by software, hardware, or a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 3. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of determining a degree of power resource dominance. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 3 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for determining a degree of power resource dominance, the method comprising:
determining a blocked power transmission line at a set moment, and acquiring a tidal current alleviation demand of the blocked power transmission line;
obtaining a tidal current alleviation quantity of a generator set belonging to a power resource provider in the blocked power transmission line;
according to the ratio of the flow alleviation amount to the flow alleviation demand amount, obtaining a flow alleviation factor of the power generation unit of the power resource provider to the blocked power transmission line at the set moment;
determining a power resource dominance degree of the power resource provider based on the power flow mitigation factor.
2. The method of claim 1, wherein the determining the blocked transmission line at the set time comprises:
acquiring the clear tide current value of the power transmission line aiming at the set moment;
determining the maximum load capacity of the power transmission line and a preset safe load rate ratio;
and if the output clear tide current value is larger than or equal to the product of the maximum load capacity and a preset safe load rate ratio, determining the power transmission line as the blocked power transmission line at the set moment.
3. The method of claim 2, wherein the obtaining of the power flow mitigation demand of the blocked power transmission line comprises:
and obtaining the tidal current alleviation demand according to the difference value of the product of the clear tidal current value and the maximum load capacity and the preset safe load rate ratio.
4. The method according to claim 1, wherein the generator set belonging to the power resource provider is an upstream set; the obtaining of the flow alleviation amount of the generator set belonging to the power resource provider in the blocked power transmission line comprises the following steps:
acquiring sensitivity factors of the generator set to the blocked power transmission line;
acquiring a first difference value between the output upper limit value of the generator set and the output clearance of the generator set;
and obtaining the power flow alleviation amount according to the product of the sensitivity factor and the first difference value.
5. The method according to claim 1, wherein the generator set belonging to the power resource provider is a downstream set; the obtaining of the flow alleviation amount of the generator set belonging to the power resource provider in the blocked power transmission line comprises the following steps:
acquiring sensitivity factors of the generator set to the blocked power transmission line;
acquiring a second difference value between the output lower limit value of the generator set and the output clear output of the generator set;
and obtaining the power flow alleviation amount according to the product of the sensitivity factor and the second difference value.
6. The method of claim 1, wherein determining a power resource dominance of the power resource provider based on the power flow mitigation factor comprises:
determining a plurality of preset value intervals for representing different power resource domination degrees;
and obtaining the power resource domination degree of the power resource provider according to the preset value interval in which the power flow mitigation factor falls.
7. The method of claim 1, wherein determining the power resource dominance of the power resource provider based on the power flow mitigation factor comprises
Obtaining a power flow alleviation amount and a power flow alleviation factor of a generator set of the power resource provider aiming at each blocked power transmission line at each set moment in a set time period;
inputting the power flow alleviation amount and the power flow alleviation factor of each blocked power transmission line of the generator set at each set moment in a set time period into a power resource domination degree evaluation model to obtain the power resource domination degree output by the power resource domination degree evaluation model; wherein the content of the first and second substances,
the power resource dominance degree evaluation model is as follows:
wherein, PFjIndicating the power resource domination degree of the power resource provider, T indicating the set time period, i indicating the serial number of each blocked transmission line, SUjiRepresenting the amount of tidal current remission, RSIjiRepresenting the power flow mitigation factor.
8. An apparatus for determining a degree of dominance of a power resource, comprising:
the device comprises a blocking line determining module, a blocking line determining module and a control module, wherein the blocking line determining module is used for determining a blocking power transmission line at a set moment and acquiring a load flow relieving demand of the blocking power transmission line;
the alleviation amount acquisition module is used for acquiring the flow alleviation amount of the generator set belonging to the power resource provider in the blocked power transmission line;
a mitigation factor obtaining module, configured to obtain a power flow mitigation factor of the blocking power transmission line at the set time by a generator set of the power resource provider according to a ratio of the power flow mitigation amount to the power flow mitigation demand amount;
and the degree determining module is used for determining the power resource domination degree of the power resource provider based on the power flow relieving factor.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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