CN115333103B - Power grid voltage control parameter self-adaptive setting method based on meteorological features - Google Patents

Power grid voltage control parameter self-adaptive setting method based on meteorological features Download PDF

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CN115333103B
CN115333103B CN202211264018.3A CN202211264018A CN115333103B CN 115333103 B CN115333103 B CN 115333103B CN 202211264018 A CN202211264018 A CN 202211264018A CN 115333103 B CN115333103 B CN 115333103B
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meteorological
voltage
control parameter
voltage control
transformer substation
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CN115333103A (en
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章杜锡
周洋
陈天华
周飞
许大卫
余佳音
王毅
焦旭明
陈建华
吴昱昊
朱晓杰
盛海静
杨锦晶
江杰
彭昊杰
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Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Ningbo Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

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  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention provides a power grid voltage control parameter self-adaptive setting method based on meteorological features, which comprises the following steps of: acquiring meteorological information data and establishing association with a transformer substation; classifying and grading the meteorological information data; formulating a voltage control parameter fixed value and establishing a corresponding relation with a meteorological evaluation index P; classifying and grading the current and future meteorological change trends of the transformer substation to obtain the comprehensive voltage control parameter value
Figure 100004_DEST_PATH_IMAGE002
Based on the obtained value of the integrated voltage control parameter
Figure 147808DEST_PATH_IMAGE002
And carrying out transformer substation voltage optimization control. Each transformer substation is independently associated with meteorological information data, the obtained meteorological information data is classified and graded, the voltage control parameter fixed value and the meteorological evaluation index P are established to be in corresponding relation, and finally, the corresponding comprehensive voltage control parameter value is obtained according to the current and future meteorological changes of the transformer substation
Figure 100004_DEST_PATH_IMAGE004
Based on the obtained value of the integrated voltage control parameter
Figure DEST_PATH_IMAGE004A
And controlling the voltage of the transformer substation.

Description

Power grid voltage control parameter self-adaptive setting method based on meteorological features
Technical Field
The invention relates to the technical field of power systems, in particular to a power grid voltage control parameter self-adaptive setting method based on meteorological features.
Background
The voltage quality is a key factor of safe, reliable and stable operation of a regional power grid, whether a power system can provide high-quality power supply quality and service quality for users is determined, and the weather and the voltage quality are closely related, for example, when the temperature is too high or too low, the load is greatly increased due to the fact that a large amount of cooling or heating equipment is used, and the fluctuation of the load directly influences the operation interval of the voltage. In addition, abnormal weather such as rime caused by thunderstorm, typhoon and strong cold air easily causes faults such as overload of a main transformer, short circuit or disconnection of a line and the like, thereby causing large-amplitude fluctuation and instability of voltage.
With the great increase of the number of regional meteorological stations, the gridding and refinement degree of the meteorological forecast service is continuously enhanced, a more reasonable voltage control limit value interval is automatically given by establishing the relation between meteorological characteristics and the voltage control requirements of the transformer substation, and the traditional transformer substation voltage control customized parameters in the prior art are rarely adjusted after being set.
Based on the method, the inventor provides a power grid voltage control parameter self-adaptive setting method based on meteorological features.
Disclosure of Invention
The invention solves the problem that the customized parameters of the traditional transformer substation voltage control in the prior art are rarely adjusted according to meteorological characteristics, so that the transformer substation cannot adapt to meteorological environment, and the phenomena of large voltage fluctuation and instability are caused.
In order to solve the problems, the invention provides a power grid voltage control parameter self-adaptive setting method based on meteorological features, which comprises the following steps: s1, acquiring meteorological information data and establishing association with a transformer substation; s2, classifying and grading the meteorological information data; s3, formulating voltage control parameter fixed values, establishing a corresponding relation with the meteorological evaluation index P, and respectively establishing corresponding voltage control parameter fixed values C according to the affiliated intervals of the meteorological evaluation index P so as to
Figure 401428DEST_PATH_IMAGE001
Represents; s4, checking limit value by voltage
Figure 81677DEST_PATH_IMAGE002
Correcting the voltage control parameter fixed value C corresponding to the meteorological evaluation index P to correct the value
Figure 178946DEST_PATH_IMAGE003
Representing; s5, classifying and grading the current and future meteorological change trends of the transformer substation to obtain comprehensive meteorological indexes
Figure 949456DEST_PATH_IMAGE004
(ii) a S6, comprehensive meteorological index for evaluating transformer substation
Figure 106768DEST_PATH_IMAGE004
Obtaining corresponding comprehensive voltage control parameter value
Figure 759466DEST_PATH_IMAGE005
(ii) a S7, controlling parameter values based on obtained comprehensive voltage
Figure 411158DEST_PATH_IMAGE006
Performing optimized control on the voltage of the transformer substation, and controlling the parameter value according to the self-adaptive adjusted comprehensive voltage
Figure 98492DEST_PATH_IMAGE005
And determining a preset voltage operation interval and ensuring that the voltage is within an examination limit value.
Compared with the prior art, the technical effect that this scheme of adoption can reach: each transformer substation is independently associated with meteorological information data, the obtained meteorological information data are classified and rated, a corresponding relation is established between the voltage control parameter fixed value and a meteorological evaluation index, and finally a comprehensive meteorological index is obtained according to the current and future meteorological change trends of the transformer substations
Figure 692284DEST_PATH_IMAGE004
Based on the obtained comprehensive meteorological indexes
Figure 832278DEST_PATH_IMAGE004
Obtaining corresponding comprehensive voltage control parameter value
Figure 100002_DEST_PATH_IMAGE007
And based on the obtained value of the integrated voltage control parameter
Figure 255038DEST_PATH_IMAGE006
The voltage of the transformer substation is controlled so as to achieve the purpose that the voltage of the transformer substation is controlled and adjusted according to meteorological characteristics, so that the voltage of the transformer substation cannot fluctuate greatly and cannot be unstable.
In this embodiment, the meteorological information data in step S1 is expressed by a set of meteorological factors, which refer to meteorological elements or changing conditions including a combination of a plurality of types of average air temperature, maximum air temperature, minimum air temperature, precipitation amount, maximum wind speed, and average wind speed.
The technical effect after the technical scheme is adopted is that the meteorological factors are meteorological change conditions or meteorological elements including but not limited to average temperature, highest temperature, lowest temperature, precipitation, maximum wind speed and average wind speed, and the meteorological environment of the transformer substation can be reflected in an all-around manner by adopting the meteorological factors, so that subsequent voltage control and regulation are facilitated.
In this embodiment, the establishing of the association with the substation in step S1 includes establishing a one-to-one relationship with the meteorological information data of the area where the substation is located through longitude and latitude coordinate information of the location where the substation is located.
The technical effect after adopting this technical scheme does, because the position setting of transformer substation is in each region, and the longitude and latitude coordinate in every region differs, and the meteorological environment in every region also differs, and the coordinate through the transformer substation does the one-to-one with meteorological information data one-to-one, can be convenient for operating system to the voltage of a certain transformer substation or the voltage of a plurality of transformer substations according to meteorological environment and adjust.
In this embodiment, the classifying and rating of the weather information data in step S2 includes evaluating an impression of the grid voltage by the acquired weather information factors "average air temperature, maximum air temperature, minimum air temperature, precipitation, maximum wind speed, and average wind speed", and establishing a weather evaluation index P.
The technical effect after the technical scheme is adopted is that the impression condition of the power grid voltage is evaluated according to the meteorological information factors, the evaluation index P is established, normalization processing can be adopted for the evaluation index P, the evaluation index P is obtained by calculation in a weight ratio mode, and subsequent voltage regulation and control are facilitated.
In this embodiment, the voltage control parameter fixed value C in step S3 is a range in which the voltage can normally operate, so as to
Figure 796878DEST_PATH_IMAGE008
Is shown in which
Figure 295992DEST_PATH_IMAGE009
In order to be the upper limit of the voltage,
Figure 923283DEST_PATH_IMAGE010
is the lower voltage limit; and respectively establishing corresponding voltage control parameter fixed values C according to the range to which the value of the meteorological evaluation index P belongs.
The technical effect after the technical scheme is adopted is that the meteorological environments of different transformer stations are different, and the corresponding voltage control parameter fixed values are different, so that the corresponding voltage upper limit and the voltage upper limit are also different, and different voltage control parameter fixed values C are established according to different meteorological environments, so that the voltage of the transformer substation cannot fluctuate greatly, and the phenomenon of instability cannot occur.
In this embodiment, in the step S4, the check limit of the voltage
Figure 182357DEST_PATH_IMAGE002
Provided by a local power supply management department; the method for correcting the fixed value C of the voltage control parameter adopts
Figure 844283DEST_PATH_IMAGE002
And
Figure 514298DEST_PATH_IMAGE008
take the intersection way and the result is as follows
Figure 566568DEST_PATH_IMAGE003
And (4) showing.
The technical effect of adopting the technical scheme is that the local power supply management department provides the assessment limit value of the corresponding transformer substation
Figure 613021DEST_PATH_IMAGE002
The fixed value C of the voltage control parameter is determined according to the meteorological environment, and the correction method adopts
Figure 378721DEST_PATH_IMAGE002
And with
Figure 219638DEST_PATH_IMAGE008
And an intersection mode is adopted, so that the voltage assessment limit value determined by a local power supply management department is considered, and the local meteorological environment of the transformer substation is considered, so that the voltage control parameter fixed value C is more reasonable.
In this embodiment, in the step S5, the current and future weather change trends of the transformer substation are classified and rated to obtain the comprehensive weather indicator
Figure 555941DEST_PATH_IMAGE004
Calculating comprehensive meteorological indexes by acquiring meteorological information data of the current to future 2 hours of the transformer substation and setting weight
Figure 406086DEST_PATH_IMAGE004
。
The technical effect of adopting the technical scheme is that the corresponding weight can be manually matched according to the meteorological evaluation index of the transformer substation at the current moment, the meteorological evaluation index of 1 hour in the future and the meteorological evaluation index of 2 hours in the future to calculate the comprehensive meteorological index of the transformer substation
Figure 527757DEST_PATH_IMAGE004
。
In this embodiment, in the step S6, a comprehensive weather indicator is obtained
Figure 539575DEST_PATH_IMAGE004
Corresponding integrated voltage control parameter value
Figure 628754DEST_PATH_IMAGE005
For passing through the comprehensive meteorological indexes of the transformer station
Figure 954693DEST_PATH_IMAGE004
According to the weather evaluation index P and the voltage control established in the steps S3 and S4And (4) making and calculating the corresponding relation of the parameter fixed value C.
The technical effect after the technical proposal is adopted is that,
Figure 445717DEST_PATH_IMAGE004
corresponding integrated voltage control parameter value
Figure 877704DEST_PATH_IMAGE005
Or the corresponding relation between the weather evaluation index P and the control parameter fixed value C in the steps S3 and S4 can be obtained to obtain
Figure 188600DEST_PATH_IMAGE004
Corresponding integrated voltage control parameter value
Figure 380547DEST_PATH_IMAGE005
。
In this embodiment, in the step S7, the preset voltage operation interval is determined according to the value of the integrated voltage control parameter
Figure 726077DEST_PATH_IMAGE005
Determining a preset interval of the voltage of the transformer substation; when the voltage exceeds the preset interval, the voltage returns to the operation in the preset interval through the intervention control of the reactive power compensation device in the transformer substation.
The technical effect after the technical scheme is adopted is that when the voltage operates in the preset interval, no intervention is performed, and when the voltage exceeds the preset interval, the voltage returns to the operation in the preset interval by adjusting the reactive power compensation device in the transformer substation to perform intervention control. The voltage is ensured to be within the checking limit value, so that the transformer station outputs the voltage reasonably.
Drawings
FIG. 1 is a schematic diagram of a power grid voltage control parameter adaptive setting method based on meteorological features according to the invention;
FIG. 2 is a first portion of a flow chart of steps of a method for meteorological-feature-based adaptive tuning of grid voltage control parameters of the present invention;
fig. 3 is a second part of a flow chart illustrating steps of a method for adaptively tuning grid voltage control parameters based on meteorological features according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The first embodiment is as follows: the invention provides a power grid voltage control parameter self-adaptive setting method based on meteorological features, which is shown by referring to fig. 1, fig. 2 and fig. 3 and comprises the following steps:
s1, acquiring meteorological information data and establishing association with a transformer substation;
the meteorological information data in step S1 is expressed by a meteorological factor set, which refers to meteorological factors or variation conditions, including various combinations of average air temperature, maximum air temperature, minimum air temperature, precipitation amount, maximum wind speed, and average wind speed, and preferably, the above average air temperature, maximum air temperature, minimum air temperature, precipitation amount, maximum wind speed, and average wind speed are taken into comprehensive consideration.
The step S1 of establishing the association with the transformer substation comprises the step of establishing a one-to-one relationship with meteorological information data of an area where the transformer substation is located through longitude and latitude coordinate information of the position where the transformer substation is located.
In this embodiment, the acquired weather information data includes an average air temperature, a highest air temperature, and a lowest air temperature, and the unit of the three weather information data is; the unit of the two meteorological information data is mm; the method comprises the steps that longitude and latitude coordinate information of the transformer substation is displayed in a command post, the longitude and latitude coordinate information of the transformer substation is displayed (the longitude and latitude coordinate of the transformer substation is secret and generally not disclosed to the public, so that the longitude and latitude coordinate of the transformer substation can be known only by a command system/the command post), the meteorological information data of the transformer substation are correspondingly counted, and the purpose that the meteorological information data are in one-to-one correspondence with the transformer substation is achieved.
S2, classifying and grading the meteorological information data;
the step S2 of classifying and grading the meteorological information comprises the steps of evaluating the impression condition of the power grid voltage through the acquired meteorological information factors of average air temperature, highest air temperature, lowest air temperature, average precipitation, maximum wind speed and average wind speed, and establishing a meteorological evaluation index P. The above 7 units of meteorological information are shown in step S1, and the adopted evaluation method is a normalization process, that is, a quantity is used to feed back the meteorological information, such as meteorological information of temperature fed back by average temperature, highest temperature and lowest temperature, meteorological information of precipitation fed back by average precipitation and maximum precipitation, and meteorological information of wind speed fed back by maximum wind speed and average wind speed, so as to obtain a calculation formula of P, which is as follows:
Figure 282961DEST_PATH_IMAGE011
wherein,
Figure 628623DEST_PATH_IMAGE012
、
Figure 358681DEST_PATH_IMAGE013
、
Figure 558718DEST_PATH_IMAGE014
respectively the quantity of the temperature, precipitation and wind speed characteristic factors in the meteorological information data;
Figure 286503DEST_PATH_IMAGE015
is a temperature factor
Figure 149154DEST_PATH_IMAGE016
The maximum air temperature of the air-conditioning system,
Figure 682904DEST_PATH_IMAGE017
is a temperature factor
Figure 940710DEST_PATH_IMAGE016
The lowest air temperature of the air conditioner,
Figure 386866DEST_PATH_IMAGE018
as a factor of temperature
Figure 159650DEST_PATH_IMAGE016
Average air temperature of (2);
Figure 497090DEST_PATH_IMAGE019
is a precipitation factor
Figure 406141DEST_PATH_IMAGE016
The annual maximum precipitation of the water is reduced,
Figure 810750DEST_PATH_IMAGE020
is a precipitation factor
Figure 805250DEST_PATH_IMAGE016
Annual average precipitation;
Figure 680803DEST_PATH_IMAGE021
is a factor of wind speed
Figure 647622DEST_PATH_IMAGE016
The maximum wind speed of the wind is high,
Figure 950427DEST_PATH_IMAGE022
is a factor of wind speed
Figure 182956DEST_PATH_IMAGE016
Average wind speed of (2);
Figure 596620DEST_PATH_IMAGE023
、
Figure 480262DEST_PATH_IMAGE024
、
Figure 953969DEST_PATH_IMAGE025
the air temperature, precipitation and wind speed are respectively weighted in the evaluation index P. In this embodiment
Figure 437909DEST_PATH_IMAGE012
3, which are respectively an average air temperature, a highest air temperature and a lowest air temperature;
Figure 655264DEST_PATH_IMAGE013
is 2, which is the average precipitation and the maximum precipitation respectively;
Figure 393413DEST_PATH_IMAGE014
and 2, respectively, the maximum wind speed and the average wind speed. In the present embodiment
Figure 38020DEST_PATH_IMAGE023
、
Figure 697672DEST_PATH_IMAGE024
、
Figure 203871DEST_PATH_IMAGE025
The sum is 1, most preferably
Figure 62105DEST_PATH_IMAGE023
、
Figure 877615DEST_PATH_IMAGE024
、
Figure 821300DEST_PATH_IMAGE025
Equal to each other, 1/3.
S3, formulating voltage control parameter fixed values, establishing a corresponding relation with the meteorological evaluation index P, and respectively establishing corresponding voltage control parameter fixed values C according to the belonged interval of the meteorological evaluation index P so as to
Figure 629725DEST_PATH_IMAGE001
Represents;
s3, the constant value of the voltage control parameter is the voltage which can normally runIn the range of
Figure 342466DEST_PATH_IMAGE008
Is shown in which
Figure 532139DEST_PATH_IMAGE009
The upper limit of the voltage is set as,
Figure 697541DEST_PATH_IMAGE010
is the lower voltage limit. And respectively establishing corresponding voltage control parameter fixed values C according to the range of the value of the meteorological index P.
Establishing a corresponding voltage control parameter constant value C as shown in the following formula:
Figure 794810DEST_PATH_IMAGE026
wherein, when P is in different intervals,
Figure 175107DEST_PATH_IMAGE008
the value of the voltage is obtained by the corresponding relation between the historical meteorological indexes and the voltage data,
Figure 332419DEST_PATH_IMAGE010
when the historical meteorological indexes meet the interval requirements, the historical lowest value of the voltage is obtained;
Figure 188379DEST_PATH_IMAGE009
and when the historical meteorological indexes meet the interval requirement, the historical highest value of the voltage is obtained.
The corresponding relation between the historical meteorological indexes and the voltage data is the corresponding relation between the meteorological indexes and the voltage data adopted by the transformer substation in the past time period when the meteorological indexes meet the interval requirements. Namely, the current voltage control parameter fixed value C is established by the past empirical reference value and the value of P.
S4, checking limit value by voltage
Figure 89339DEST_PATH_IMAGE002
To weather evaluation specialCorrecting the control parameter fixed value C corresponding to the sign P by correcting the value
Figure 291519DEST_PATH_IMAGE003
Representing;
the assessment limit of the voltage is generally given by a local power supply management department because the local power supply management department records the upper voltage limit and the lower voltage limit of a local substation, and the assessment limit of the voltage
Figure 619732DEST_PATH_IMAGE002
Namely the upper voltage limit and the lower voltage limit under the transformer substation theory, when the voltage needs to be adjusted according to the meteorological index of the transformer substation, the control parameter fixed value C corresponding to the meteorological evaluation characteristic P is corrected in a correction mode, and the correction value is calculated according to the meteorological index
Figure 759727DEST_PATH_IMAGE003
Indicating, correcting methods generally adopted
Figure 198798DEST_PATH_IMAGE002
And
Figure 491370DEST_PATH_IMAGE008
taking the intersection mode as shown in the following formula:
Figure 193747DEST_PATH_IMAGE027
for example,
Figure 617775DEST_PATH_IMAGE002
=[10kv，220kv]，
Figure 63800DEST_PATH_IMAGE008
=[8kv,200kv]that is, according to the above formula,
Figure 460146DEST_PATH_IMAGE003
=[10kv,200kv]。
s5, for the transformer substationClassifying and grading the current and future meteorological change trends to obtain comprehensive meteorological indexes
Figure 379430DEST_PATH_IMAGE004
；
In step S5, the current and future meteorological change trends of the transformer substation are classified and rated to obtain comprehensive meteorological indexes
Figure 759595DEST_PATH_IMAGE004
Calculating comprehensive meteorological indexes by acquiring meteorological information data of the transformer substation from the current time to 2 hours in the future, setting weight
Figure 806049DEST_PATH_IMAGE028
。
Obtaining comprehensive meteorological indexes by setting weight according to meteorological information data of the transformer substation for 2 hours from present to future
Figure 56902DEST_PATH_IMAGE004
As shown in the following formula:
Figure 101081DEST_PATH_IMAGE029
wherein,
Figure 453696DEST_PATH_IMAGE030
is a meteorological evaluation index of the transformer substation at the current moment,
Figure 38261DEST_PATH_IMAGE031
the weather evaluation index is a weather evaluation index at the future time of 1 hour and is a weather evaluation index at the future time of 2 hours;
Figure 409200DEST_PATH_IMAGE032
、
Figure 686597DEST_PATH_IMAGE033
、
Figure 25044DEST_PATH_IMAGE034
the weight of the weather evaluation index at the current moment, 1 hour in the future and 2 hours in the future can be artificially set and meets the requirements
Figure 147720DEST_PATH_IMAGE035
，
Figure 373165DEST_PATH_IMAGE032
+
Figure 821464DEST_PATH_IMAGE033
+
Figure 335622DEST_PATH_IMAGE034
=1, as preferred
Figure 12722DEST_PATH_IMAGE032
The content of the active carbon is 50 percent,
Figure 358253DEST_PATH_IMAGE033
is 30 percent of the total weight of the mixture,
Figure 977453DEST_PATH_IMAGE034
the content was 20%.
S6, comprehensive meteorological index for evaluating transformer substation
Figure 775645DEST_PATH_IMAGE028
Obtaining corresponding comprehensive voltage control parameter value
Figure 708966DEST_PATH_IMAGE005
；
In step S6, comprehensive meteorological indexes are obtained
Figure 158271DEST_PATH_IMAGE004
Corresponding integrated voltage control parameter value
Figure 682793DEST_PATH_IMAGE005
For passing through the comprehensive meteorological indexes of the transformer station
Figure 968281DEST_PATH_IMAGE004
And calculating according to the corresponding relation between the meteorological features P and the control parameter fixed value C established in the steps S3 and S4. I.e. the value of the integrated voltage control parameter
Figure 502030DEST_PATH_IMAGE005
Replacing the constant value C of the voltage control parameter, and integrating the meteorological indexes
Figure 307306DEST_PATH_IMAGE004
The weather evaluation index P is replaced for calculation.
Obtaining comprehensive meteorological indexes
Figure 268309DEST_PATH_IMAGE004
Corresponding integrated voltage control parameter value
Figure 244355DEST_PATH_IMAGE005
The method of obtaining (2) is the same as the method of obtaining the correlation between the meteorological feature P and the control parameter constant value C established in steps S3 and S4.
S7, controlling parameter values based on obtained comprehensive voltage
Figure 50637DEST_PATH_IMAGE006
Performing optimized control on the voltage of the transformer substation, and controlling the parameter value according to the self-adaptive adjusted comprehensive voltage
Figure 225267DEST_PATH_IMAGE005
And determining a preset voltage operation interval and ensuring that the voltage is within an examination limit value.
In step S7, a preset interval of voltage operation is determined according to the comprehensive voltage control parameters
Figure 606438DEST_PATH_IMAGE005
Determining a reasonable operation interval of the voltage of the transformer substation; ensuring that the voltage is within the checking limit means that no intervention is performed when the voltage operates in a preset interval (reasonable operation interval), and when the voltage exceeds the preset interval (reasonable operation interval), reactive power is adjusted through on-load voltage regulation taps or capacitors, reactors and the like in the transformer substationThe compensation device is controlled in an intervention mode, and the voltage returns to operate in a preset interval (reasonable operation interval).
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (2)

1. A power grid voltage control parameter self-adaptive setting method based on meteorological features is characterized by comprising the following steps: the method comprises the following steps:
s1, acquiring meteorological information data and establishing association with a transformer substation;
s2, classifying and grading the meteorological information data;
s3, formulating voltage control parameter fixed values, establishing a corresponding relation with the meteorological evaluation index P, and respectively establishing corresponding voltage control parameter fixed values C according to the belonged interval of the meteorological evaluation index P so as to
Figure DEST_PATH_IMAGE001
Represents;
s4, checking limit value by voltage
Figure DEST_PATH_IMAGE002
Correcting the voltage control parameter fixed value C corresponding to the meteorological evaluation index P to correct the value
Figure DEST_PATH_IMAGE003
Represents;
s5, classifying and grading the current and future meteorological change trends of the transformer substation to obtain comprehensive meteorological indexes
Figure DEST_PATH_IMAGE004
；
S6, comprehensive meteorological index for evaluating transformer substation
Figure 543052DEST_PATH_IMAGE004
Obtaining corresponding comprehensive voltage control parameter value
Figure DEST_PATH_IMAGE005
；
S7, controlling parameter values based on obtained comprehensive voltage
Figure DEST_PATH_IMAGE006
Performing voltage optimization control of the transformer substation according to the self-adaptive adjusted comprehensive voltage control parameter value
Figure 162252DEST_PATH_IMAGE005
Determining a preset interval of voltage operation to ensure that the voltage is within an examination limit value;
the meteorological information data in the step S1 is expressed by a meteorological factor set, which refers to meteorological elements or variation conditions, including combinations of multiple ones of average air temperature, maximum air temperature, minimum air temperature, precipitation, maximum wind speed, and average wind speed;
the step S1 of establishing the association with the transformer substation comprises the steps of establishing a one-to-one relationship with meteorological information data of an area where the transformer substation is located through longitude and latitude coordinate information of the position where the transformer substation is located;
the step S2 of classifying and grading the meteorological information data comprises the steps of evaluating the impression condition of the power grid voltage through the acquired meteorological information factors of average air temperature, highest air temperature, lowest air temperature, precipitation, maximum wind speed and average wind speed, and establishing a meteorological evaluation index P;
the voltage control parameter fixed value C of the step S3 is a range within which the voltage can normally operate so as to
Figure DEST_PATH_IMAGE007
Is shown in which
Figure DEST_PATH_IMAGE008
The upper limit of the voltage is set as,
Figure DEST_PATH_IMAGE009
respectively establishing corresponding voltage control parameter fixed values C for the lower voltage limit according to the range of the value of the weather evaluation index P;
in the step S4, the checking limit value of the voltage
Figure 819499DEST_PATH_IMAGE002
Provided by a local power supply management department; the method for correcting the fixed value C of the voltage control parameter adopts
Figure 752820DEST_PATH_IMAGE002
And
Figure 15174DEST_PATH_IMAGE007
take the intersection mode and the result is as
Figure 742958DEST_PATH_IMAGE003
Represents;
in the step S5, the current and future meteorological change trends of the transformer substation are classified and rated, and comprehensive meteorological indexes are obtained
Figure 90763DEST_PATH_IMAGE004
Calculating comprehensive meteorological indexes by acquiring meteorological information data of the transformer substation from the current time to 2 hours in the future, setting weight
Figure 562196DEST_PATH_IMAGE004
；
In the step S6, the comprehensive meteorological index is obtained
Figure 554422DEST_PATH_IMAGE004
Corresponding integrated voltage control parameter value
Figure 577742DEST_PATH_IMAGE005
For passing through the comprehensive meteorological indexes of the transformer substation
Figure 553788DEST_PATH_IMAGE004
And calculating according to the corresponding relation between the weather evaluation index P and the voltage control parameter fixed value C established in the steps S3 and S4.
2. The meteorological-characteristic-based power grid voltage control parameter adaptive setting method according to claim 1, wherein in the step S7, the preset voltage operation interval is determined according to the value of the comprehensive voltage control parameter
Figure 422387DEST_PATH_IMAGE005
Determining a preset interval of the voltage of the transformer substation; when the voltage exceeds the preset interval, the voltage returns to the operation in the preset interval through the intervention control of the reactive power compensation device in the transformer substation.
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