CN110729732B - Method for constructing unified measurement model of power distribution network - Google Patents
Method for constructing unified measurement model of power distribution network Download PDFInfo
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- CN110729732B CN110729732B CN201911257368.5A CN201911257368A CN110729732B CN 110729732 B CN110729732 B CN 110729732B CN 201911257368 A CN201911257368 A CN 201911257368A CN 110729732 B CN110729732 B CN 110729732B
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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
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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a method for constructing a unified measurement model of a power distribution network, which is characterized in that surrounding environment information of a transformer substation, including lightning stroke information, rainfall information, wind speed information, temperature and humidity information and the like, is collected, a first measurement model is constructed as a carrier of the environment information, meanwhile, equipment operation data of the transformer substation, including transformer current and voltage information, bus side voltage and current information and intelligent ammeter side voltage and current information, is collected, a second measurement model is constructed as a carrier of the equipment operation information of the transformer substation, and the first measurement model and the second measurement model are overlapped together after time synchronization, so that the unified measurement model is formed, and when the operation information of the transformer substation equipment under the action of environmental factors can be obtained from the unified measurement model, the operation state of the transformer substation can be known immediately, and risk assessment, early warning and the like are realized.
Description
Technical Field
The invention relates to the technical field of power distribution network monitoring, in particular to a method for constructing a unified power distribution network measurement model.
Background
The intelligent power grid is a self-healing power grid which takes a power system as an object, combines novel control technology, information technology and management technology, realizes intelligent communication from power transmission and distribution to all links of users, can scientifically and systematically optimize power production, transmission and use, and key technologies of the intelligent power grid comprise measurement, communication, information management, scheduling, power electronics, distributed energy access and the like of the intelligent power grid, wherein the measurement technology is a basic component part of the intelligent power grid, and an advanced measurement technology obtains data and converts the data into data information for use in all aspects of the intelligent power grid.
Disclosure of Invention
In view of the above, the invention provides a method for constructing a unified measurement model of a power distribution network, which is used for carrying out unified management on the operation state of a transformer substation after the unified measurement model is constructed by carrying out data acquisition on the surrounding environment of the transformer substation and equipment operation data of the transformer substation.
The technical scheme of the invention is realized as follows:
a method for constructing a unified measurement model of a power distribution network comprises the following steps:
s1, acquiring lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data;
s2, constructing a first measurement model, and inputting lightning stroke measurement data and environment monitoring measurement data;
s3, constructing a second measurement model and inputting equipment operation measurement data;
and S4, constructing a unified measurement model according to the first measurement model and the second measurement model.
Preferably, the step S1 of collecting lightning stroke measurement data includes the following specific steps:
s11, collecting first lightning stroke times by adopting a photoelectric tube;
s12, acquiring second lightning stroke times by adopting a current transformer induction grounding wire;
and S13, obtaining the total lightning stroke times according to the first lightning stroke times and the second lightning stroke times.
Preferably, the environmental monitoring measurement data in the step S1 includes wind speed information, rainfall information, temperature information and humidity information.
Preferably, the specific steps of the step S2 are as follows:
s21, constructing a surrounding environment model;
s22, mapping the total lightning stroke times to a surrounding environment model according to the occurrence time of the total lightning stroke times;
step S23, mapping rainfall information into a surrounding environment model in a rainfall form according to the occurrence time of the rainfall information;
and step S24, mapping the values of the wind speed information, the rainfall information, the temperature information and the humidity information into the surrounding environment model according to the occurrence time of the values.
Preferably, the step S1 of collecting the device operation measurement data includes the specific steps of: the method comprises the steps of collecting voltage and current information of a transformer, collecting voltage and current information of a bus side and collecting voltage and current information of a smart meter side.
Preferably, the step S3 specifically includes the steps of:
s31, constructing a transformer substation model consisting of a transformer, a bus and a smart meter;
step S32, mapping voltage and current information of the transformer into the transformer of the substation model;
step S33, mapping the voltage and current information of the bus side into a bus of a transformer substation model;
and step S34, mapping the voltage and current information of the intelligent ammeter side into the intelligent ammeter of the substation model.
Preferably, the specific steps of the step S4 are as follows:
step S41, performing time synchronization processing on the first measurement model and the second measurement model;
step S42, the second measurement model is used as a bottom layer, and the first measurement model is superimposed into the second measurement model to form a unified measurement model.
Preferably, the method further comprises step S5 of inputting time information into a unified measurement model, and the unified measurement model visually displays corresponding lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method for constructing a unified measurement model of a power distribution network, which is used for acquiring environment information and equipment operation information in the operation process of a transformer substation, wherein the environment information comprises lightning stroke measurement data and environment monitoring measurement data, the acquired environment information is input into a constructed first measurement model, the environment model of the transformer substation is constructed, a second measurement model is constructed, the equipment operation measurement data is input into the second measurement model, and the unified measurement model can be obtained by combining the first measurement model and the second measurement model, so that the equipment operation states of the transformer substation under different environment information can be acquired from the unified measurement model, unified management of the operation states of a power grid is facilitated, the power grid state conditions under each stage can be known in the unified measurement model, and functions such as risk assessment and early warning are realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only preferred embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for constructing a unified measurement model of a power distribution network according to the present invention.
Detailed Description
For a better understanding of the technical content of the present invention, a specific example is provided below, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1, the method for constructing a unified measurement model of a power distribution network provided by the invention comprises the following steps:
s1, acquiring lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data;
s2, constructing a first measurement model, and inputting lightning stroke measurement data and environment monitoring measurement data;
s3, constructing a second measurement model and inputting equipment operation measurement data;
and S4, constructing a unified measurement model according to the first measurement model and the second measurement model.
The method for constructing the unified measurement model of the power distribution network is applied to intelligent management of the power distribution network, environmental information and equipment information are acquired in advance before the measurement model is constructed, different measurement models are constructed for the environmental information and the equipment information respectively, and then the two measurement models are combined to obtain the unified measurement model, so that operation information of power grid equipment in different states can be known according to the unified measurement model, the operation state of the power grid can be analyzed, and unified management of the operation state of a transformer substation can be facilitated.
The method comprises the steps of acquiring environmental information, wherein the acquired environmental information comprises lightning stroke measurement data and environment monitoring measurement data, the lightning stroke measurement data are used for recording the lightning stroke times of a transformer substation in corresponding time, the environment monitoring measurement data are used for acquiring data of nearby environments and are used for subsequently judging the operation states of power grid equipment under different environmental information, a constructed first measurement model comprises the lightning stroke measurement data and the environment monitoring measurement data, the first measurement model is equivalent to an environment layer, a second measurement model comprises equipment operation measurement data which are equivalent to an equipment operation layer, a unified measurement model can be obtained after the equipment operation layer and the environment layer are combined, and equipment operation state parameters under different environments and under the condition of lightning stroke can be obtained from the unified measurement model, so that functions of envelope assessment, early warning and the like can be realized.
Preferably, the step S1 of collecting lightning stroke measurement data includes the following specific steps:
s11, collecting first lightning stroke times by adopting a photoelectric tube;
s12, acquiring second lightning stroke times by adopting a current transformer induction grounding wire;
and S13, obtaining the total lightning stroke times according to the first lightning stroke times and the second lightning stroke times.
According to the lightning stroke measurement data, a double-acquisition mode is adopted, the first lightning stroke frequency is acquired by adopting a photoelectric tube, when lightning stroke occurs, the photoelectric tube generates current due to a photoelectric effect, so that the first lightning stroke frequency is increased by one, the second lightning stroke frequency acquired by the current transformer is acquired by adopting a current induction principle, when the lightning stroke occurs, lightning is led into the ground from the ground wire of the lightning wire, at the moment, induced current is generated after current passes through the ground wire induced by the current transformer, so that the second lightning stroke frequency is increased by one, the error of lightning stroke frequency detection can be reduced by integrating the first lightning stroke frequency and the second lightning stroke frequency, and the total lightning stroke frequency is acquired by rounding off after the average value of the first lightning stroke frequency and the second lightning stroke frequency.
Preferably, the environmental monitoring measurement data in the step S1 includes wind speed information, rainfall information, temperature information and humidity information.
The wind speed information, the rainfall information, the temperature information and the humidity information are acquired, so that the environment around the transformer substation can be completely simulated.
Preferably, the specific steps of the step S2 are as follows:
s21, constructing a surrounding environment model;
s22, mapping the total lightning stroke times to a surrounding environment model according to the occurrence time of the total lightning stroke times;
step S23, mapping rainfall information into a surrounding environment model in a rainfall form according to the occurrence time of the rainfall information;
and step S24, mapping the values of the wind speed information, the rainfall information, the temperature information and the humidity information into the surrounding environment model according to the occurrence time of the values.
By constructing a surrounding environment model and mapping all acquired environment information into the surrounding environment model, the environment information can be checked at any time in the environment model, wherein each environment information is mapped according to the acquired time, so that lightning stroke information, rainfall information, wind speed information, temperature information and humidity information corresponding to any time point or time period can be known.
Preferably, the step S1 of collecting the device operation measurement data includes the specific steps of: the method comprises the steps of collecting voltage and current information of a transformer, collecting voltage and current information of a bus side and collecting voltage and current information of a smart meter side.
The equipment to be collected comprises a transformer, a bus side and an intelligent ammeter side, and the change of electric energy in the transportation process can be known by collecting the voltage and current information of the three parts.
Preferably, the step S3 specifically includes the steps of:
s31, constructing a transformer substation model consisting of a transformer, a bus and a smart meter;
step S32, mapping voltage and current information of the transformer into the transformer of the substation model;
step S33, mapping the voltage and current information of the bus side into a bus of a transformer substation model;
and step S34, mapping the voltage and current information of the intelligent ammeter side into the intelligent ammeter of the substation model.
And constructing a corresponding transformer, a bus and an intelligent ammeter in a transformer substation model, mapping the acquired voltage and current information into the transformer substation model, judging the running state of the transformer substation through the relevant information of the transformer, the bus and the intelligent ammeter, and checking the running state of the transformer substation in each time point after mapping the relevant voltage and current information into the transformer substation model.
Preferably, the specific steps of the step S4 are as follows:
step S41, performing time synchronization processing on the first measurement model and the second measurement model;
step S42, the second measurement model is used as a bottom layer, and the first measurement model is superimposed into the second measurement model to form a unified measurement model.
Specifically, after the second measurement model is used as a bottom layer, the first measurement model is overlapped into the second measurement model, and a unified measurement model is formed, wherein before the overlapping, time synchronization processing is performed on the first measurement model and the second measurement model, so that the two models are consistent in time, after the unified measurement model is obtained, when a certain time node can be obtained from the unified measurement model, the running state of the transformer substation under the influence of environmental factors can be helped, so that a worker can know the running state of the transformer substation, and risk assessment, lightning early warning and the like can be performed on the transformer substation.
Preferably, the method further comprises step S5 of inputting time information into a unified measurement model, and the unified measurement model visually displays corresponding lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data.
Specifically, the unified measurement model can display corresponding data in a visual form, including lightning stroke information, rainfall, wind speed, temperature and humidity, voltage and current of a transformer, voltage and current of a bus side and voltage of an intelligent ammeter side, so that a worker can know environment information and equipment operation information in corresponding time points in real time.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The method for constructing the unified measurement model of the power distribution network is characterized by comprising the following steps of:
s1, acquiring lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data;
s2, constructing a first measurement model, and inputting lightning stroke measurement data and environment monitoring measurement data;
s3, constructing a second measurement model and inputting equipment operation measurement data;
s4, constructing a unified measurement model according to the first measurement model and the second measurement model;
the specific steps of collecting lightning stroke measurement data in the step S1 are as follows:
s11, collecting first lightning stroke times by adopting a photoelectric tube;
s12, acquiring second lightning stroke times by adopting a current transformer induction grounding wire;
step S13, obtaining total lightning stroke times according to the first lightning stroke times and the second lightning stroke times;
the specific steps of the step S2 are as follows:
s21, constructing a surrounding environment model;
s22, mapping the total lightning stroke times to a surrounding environment model according to the occurrence time of the total lightning stroke times;
step S23, mapping rainfall information into a surrounding environment model in a rainfall form according to the occurrence time of the rainfall information;
step S24, mapping the values of the wind speed information, the rainfall information, the temperature information and the humidity information into a surrounding environment model according to the occurrence time of the values;
the step S3 comprises the following specific steps:
s31, constructing a transformer substation model consisting of a transformer, a bus and a smart meter;
step S32, mapping voltage and current information of the transformer into the transformer of the substation model;
step S33, mapping the voltage and current information of the bus side into a bus of a transformer substation model;
step S34, mapping the voltage and current information of the intelligent ammeter side into the intelligent ammeter of the substation model;
the specific steps of the step S4 are as follows:
step S41, performing time synchronization processing on the first measurement model and the second measurement model;
step S42, the second measurement model is used as a bottom layer, and the first measurement model is superimposed into the second measurement model to form a unified measurement model.
2. The method for constructing a unified measurement model of a power distribution network according to claim 1, wherein the environmental monitoring measurement data of step S1 includes wind speed information, rainfall information, temperature information and humidity information.
3. The method for constructing a unified measurement model of a power distribution network according to claim 1, wherein the specific steps of collecting the device operation measurement data in step S1 are as follows: the method comprises the steps of collecting voltage and current information of a transformer, collecting voltage and current information of a bus side and collecting voltage and current information of a smart meter side.
4. The method for constructing a unified measurement model of a power distribution network according to claim 1, further comprising step S5 of inputting time information into the unified measurement model, wherein the unified measurement model visually displays the corresponding lightning stroke measurement data, environment monitoring measurement data and equipment operation measurement data.
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