CN107238764A - The electric energy quality monitoring method and device of power system - Google Patents
The electric energy quality monitoring method and device of power system Download PDFInfo
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- CN107238764A CN107238764A CN201610184926.XA CN201610184926A CN107238764A CN 107238764 A CN107238764 A CN 107238764A CN 201610184926 A CN201610184926 A CN 201610184926A CN 107238764 A CN107238764 A CN 107238764A
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Abstract
The present invention provides the electric energy quality monitoring method and device of power system, wherein, including：The monitoring record data inquired about according to index information in the power system, the monitoring record data include recording head information and record block message, and the recording head information includes markers domain, data channel information domain and record data block first address；Corresponding recording head information in the power system is extracted based on index information, to parse the markers domain and data channel information domain in recording head information；Obtain the data met in the record block message of the index information.The present invention reduces the public attribute for preserving monitoring record data in power system, so that memory data output.It is used as redundancy by adding a small amount of recording head information simultaneously, and combination parses detailed data step by step from common information, to reduce the complexity of data management.The present invention can quickly locate the storage location of monitoring record data by index information, and access speed is significantly improved.
Description
Technical field
The present invention relates to the electric energy quality monitoring side of field of electric power automation, more particularly to power system
Method and device.
Background technology
With the expansion and the increase of high-quality need for electricity of intelligent grid, a large amount of manufacturers enter electric energy
Quality monitoring device market, product competition is increasingly fierce.Client is to the flexible apolegamy of monitoring index, number
The height of the device data such as the online query recorded according to record storage amount time, device power quality data
Effect management etc. is proposed more requirements.Due in the industry to the record period of electric energy quality monitoring index
With the otherness of computational methods, the hardware performance limitation and the configuration of user's Monitoring Data of embedded equipment
Diversified to require, the efficient storage and quick-searching of power quality data are always quality of power supply prison
The problem of survey.
The memory mechanism of the quality of power supply of prior art mainly includes following three kinds.
One is the ordered storage of uncorrected data, it is applied to the unification of recording unit compound with regular structure, data
The smaller situation of amount of storage.But quality of power supply device has amount of storage big and data category is more
The characteristics of sample.
The second is file system, it uses file management system, can be according to power quality data
Classification and record time divide file and are managed.But in monitoring process, if user changes
The record period or classification of power quality data index, the complexity of file management can be greatly improved.
Because power quality data classification is more, accessing operation needs to open up substantial amounts of file handle, simultaneously
When retrieving record, system also needs to carry out handle data flow serialization analysis, therefore file pipe
The overhead of reason is than larger, and data access efficiency is not high.With increasing and data for data category
The increase of amount of storage, can be affected using the data access performance of this method.At present, PQDif
File storage is an important directions of power quality data management, and sequence is not supported due to the form
The real-time data memory of rowization record, often first passes through the storage of initial data, then intensively enters
The file translations of the row form.
The third is memory database is given in memory database, its data management, it is multistage by bitmap
The efficient management of Mapping implementation record.But this method one side memory database is to system configuration
It is required that higher, on the other hand commercial memory database price is higher, if equipment for monitoring power quality
This method is taken to cause increasing on hardware and software cost.
The content of the invention
First aspect present invention provides the electric energy quality monitoring method of power system, wherein, including
Following steps：The monitoring record data inquired about according to index information in the power system, the prison
Surveying record data includes recording head information and record block message, and the recording head information includes markers
Domain, data channel information domain and record data block first address；The electric power is extracted based on index information
Corresponding recording head information in system, to parse markers domain and the data channel letter in recording head information
Cease domain；Obtain the data met in the record block message of the index information.The electricity of the present invention
Energy Quality inspectional institution preserves the public attribute of monitoring record data in power system by reducing, from
And further reduce overall data amount of storage.Simultaneously by add a small amount of recording head information be used as it is superfluous
Remaining information, and combination parses detailed data step by step from common information, to reduce data management
Complexity.The present invention also the common information of monitoring record data is extracted, and with it is variable
Record block message part separate storage, then the efficiency of data management can be obtained by further raising.
In addition, the present invention can quickly locate the storage location of monitoring record data by index information,
So access speed can also be significantly improved.
Further, the index information includes date information and time index information without hesitation, wherein,
The extraction step also includes：Extract described based on date index information and time index information grading
Corresponding recording head information in power system.
Further, the index information includes date information and time index information without hesitation, wherein,
The analyzing step also includes：Markers domain and data channel information in classification parsing recording head information
Domain.
Further, the index step also includes：Based on the index information successively from the note
The skew of data block first address is recorded, to position in the corresponding record block message in the data channel information domain
Specific data.
Further, each data channel information domain is (t, v), and wherein t is markers, v
For data,
Data source collection is combined into Ο={ oi| i=1 ... N }, record period collection is combined into Ρ={ pi| i=1 ..., L }, computational methods
Collection is combined into Μ={ mi| i=1 ..., M }.
Further, the information matrix in the data channel information domain is：
Wherein, A and B are unitary matrice,And L0For the record period number of user configuring.
Further, the data block unit is：
{vi,j,k|ai,j=1, bj,k=1,1≤j≤M, 1≤k≤N }.
Further, the species in the data channel information domain includes any one of following or appointed multinomial：
Frequency；Voltage；Voltage unbalance；Voltage harmonic；Voltage m-Acetyl chlorophosphonazo；Carrier voltage；Voltage supplied
Deviation；Flickering；Active power；Reactive power.
Second aspect of the present invention provides the equipment for monitoring power quality of power system, wherein, including：
Inquiry unit, it is used for the monitoring record data inquired about according to index information in the power system,
The monitoring record data include wrapping in recording head information and record block message, the recording head information
Include markers domain, data channel information domain and record data block first address；Resolver is extracted, it is used
In extracting corresponding recording head information in the power system based on index information, to solve new record head
Markers domain and data channel information domain in information；Acquisition device, it, which is used to obtain, meets index letter
Data in the record block message of breath.The Power Quality Detection mechanism of the present invention is protected by reducing
The public attribute of monitoring record data in power system is deposited, so as to further reduce overall data storage
Amount.It is used as redundancy by adding a small amount of recording head information simultaneously, and combines from common information
In parse detailed data step by step, to reduce the complexity of data management.The present invention is also monitoring
The common information of record data is extracted, and with variable record block message part separate storage,
The efficiency of so data management can be obtained by further raising.In addition, the present invention is believed by indexing
Breath can quickly locate the storage location of monitoring record data, then access speed can also obtain bright
Aobvious raising.
Further, the index information includes time information and date index information without hesitation, wherein,
The extraction resolver is additionally operable to：Extracted based on date index information and time index information grading
Corresponding recording head information in the power system.
Further, the index information includes time information and date index information without hesitation, wherein,
The extraction resolver is additionally operable to：Markers domain and data channel in classification parsing recording head information
Information field.
Further, the extraction resolver is additionally operable to：Based on the index information successively from institute
The skew of record data block first address is stated, is believed with positioning the corresponding record block in the data channel information domain
Specific data in breath.
Further, each data channel information domain is (t, v), and wherein t is markers, v
For data,
Data source collection is combined into Ο={ oi| i=1 ... N }, record period collection is combined into Ρ={ pi| i=1 ..., L }, computational methods
Collection is combined into Μ={ mi| i=1 ..., M }.
Further, the information matrix in the data channel information domain is：
Wherein, A and B are unitary matrice,And L0For the record period number of user configuring.
Further, the data block unit is：
{vi,j,k|ai,j=1, bj,k=1,1≤j≤M, 1≤k≤N }.
Further, the species in the data channel information domain includes any one of following or appointed multinomial：
Frequency；Voltage；Voltage unbalance；Voltage harmonic；Voltage m-Acetyl chlorophosphonazo；Carrier voltage；Voltage supplied
Deviation；Flickering；Active power；Reactive power.
Brief description of the drawings
Fig. 1 is the electric energy quality monitoring method of the power system according to a specific embodiment of the invention
Step flow chart；
Fig. 2 is the electric energy quality monitoring method of the power system according to a specific embodiment of the invention
With the data structure schematic diagram of the monitoring record data of device；
Fig. 3 is the electric energy quality monitoring method of the power system according to a specific embodiment of the invention
With the hierarchical index schematic diagram of mechanism of the monitoring record data of device；
Fig. 4 is the electric energy quality monitoring method of the power system according to a specific embodiment of the invention
Structural representation.
Embodiment
Below in conjunction with accompanying drawing, the embodiment to the present invention is illustrated.
The measurement index of equipment for monitoring power quality is related to extensive data source, mainly including transient state
Event class data and stable state statistics class data.The definition of transient affair class data at home and abroad standard refers to
Mark is essentially identical, mainly including events such as voltage swells, rapid drawdown, fast transients.Transient affair class
Data record unit memory space is smaller, produces frequency uncertainty by force, negligible amounts.
As shown in Table 1 and Table 2, stable state statistics class data are distinguished defined in each standard than larger,
It generally comprises frequency, voltage, flickering, Voltage unbalance, harmonic wave, m-Acetyl chlorophosphonazo, additional signal
Voltage, deviation voltage etc..Monitoring Data defined in wind power plant access standard also includes active power
With reactive power etc..Computational methods have integration period average and maximin, root-mean-square value, calculation
Art value, cumulative probability function assessed value etc., record period have the plurality of classes such as 3 seconds to 2 hours.
However, each province and city Utilities Electric Co. to electric energy quality monitoring index, record period and computational methods
Configuration and storage cycle request are each variant.On the one hand with the operation of equipment for monitoring power quality,
Stable state statistics class data volume will be linearly increasing, and the preservation of data and retrieval rate can be affected.Separately
One side user may adjust the configuration of such data at any time (for example, in electricity consumption according to higher level request
Load peak period, the data source of electric energy quality monitoring is more than usual, and record period is shorter, prison
More computational methods can be also based on by surveying index), identical monitoring index is potentially based on not in different time
Same record period and computational methods, the tracking of data configuration then increase the complexity of data management.
So in electric energy quality monitoring, the management of such data is more complicated, if taking traditional insertion
Formula device storage strategy, the performance such as data query and management can be greatly affected.
The record period of electric energy quality monitoring index in the standard of table 1
Electric energy quality monitoring index calculating method in the standard of table 2
The data volume increase of electric energy quality monitoring causes needs during retrieval data to read the more numbers of parsing
According to.The change of data configuration is mainly manifested in the species of record and the detailed content of every record, example
Such as markers, numerical value and state.How to change however, no matter configuring, always there are some in record and be total to
Property, for example, part record might have identical time scale information, monitoring index calculate in a device and
The relative rank of storage is fixed.
Therefore, Power Quality Detection mechanism of the invention is remembered by reducing to preserve to monitor in power system
The public attribute of data is recorded, so as to further reduce overall data amount of storage.It is simultaneously few by addition
The recording head information of amount as redundancy, and combine parsed step by step from common information it is detailed
Data, to reduce the complexity of data management.The present invention is also the common information of monitoring record data
Extract, and with variable record block message part separate storage, then the efficiency of data management
It can be obtained by further raising.In addition, the present invention can quickly locate prison by index information
Survey the storage location of record data, then access speed can also be significantly improved.
With reference to electric energy quality monitoring method of the preferred embodiment to the power system of the present invention
Illustrate.As shown in figure 1, step S1 is first carried out, the index information submitted according to user is looked into
Ask the monitoring record data in power system.For example, carrying out Power Quality Detection to certain paper mill
When, the index information that user submits is " the voltage in 35 seconds November 11 day 23 point 20 minute in 2015
Vb”.Wherein, as shown in Fig. 2 monitoring record data 100 include recording head information 110 and record
Block message 120, the recording head information 110 includes markers domain 111, data channel information domain 112
With record data block first address 113.Recording head information is the redundancy that the present invention is deliberately added.
Wherein, markers domain 111 is date every minute and second.The species in data channel information domain 112 include with
Lower any one is appointed multinomial：Frequency；Voltage；Voltage unbalance；Voltage harmonic；It is humorous between voltage
Ripple；Carrier voltage；Voltage supplied deviation；Flickering；Active power；Reactive power.Record data block
What first address 113 was indicated is the address in first data channel information domain 112.
Then S2 is performed, corresponding recording head information 110 in power system is extracted based on index information,
Finally parse the specific markers domain 111 and data channel information domain 112 in recording head information 110.Its
In, index information includes date information and time index information without hesitation.Wherein it is preferred to, such as scheme
Shown in 3, the present invention can be carried based on date index information 210 and the classification of time index information 220
Corresponding recording head information 110 in the power system is taken, to be classified parsing recording head information 110
In markers domain 111 and data channel information domain 112.
Specifically, in the present embodiment, the index information that user submits is " November 11 in 2015
Date index information 210 in 23 points of voltage Vb " of 20 minutes and 35 seconds of day is " in November, 2015
11 days ", time index information 220 is " 23: 35 20: ".Fig. 3 shows hierarchical index
The schematic diagram of mechanism, wherein, date index information 210 includes exact date 212 and time index
The address 214 of information, exact date 212 is " on November 11st, 2015 ".Therefore, user is worked as
The index information of submission for " during the voltage Vb " in 35 seconds November 11 day 23 point 20 minute in 2015,
The exact date 212 of date index information 210 is extracted for " on November 11st, 2015 " and is matched
The address 214 of time index information " 23: 35 20: ", then according to time index information " 23
Specify time index information 220 in the address 214 of point 20 minutes and 35 seconds ".Then, believe in time index
Include in breath 220 from one day 24 hour from zero point until 23 points of recording head information address
221a ... 221z, wherein recording head information address 221a ... 221z have corresponded to specific record head
110a……110z.Therefore, it is corresponding then according to time index information " 23: 35 20: "
Recording head information address should be 221z, the corresponding specific record heads of recording head information address 221z
It should be 110z.
Further, the following steps in step S2 are performed：Based on index information successively from record number
Offset according to block first address 113, to position in the corresponding record block message in the data channel information domain
Specific data.As shown in figure 1, in this example, it is assumed that data channel information domain 1121 is
Voltage Va, data channel information domain 1122 is voltage Vb, and data channel information domain 1123 is electricity
Vc is pressed, because the index information that user submits is " 35 seconds November 11 day 23 point 20 minute in 2015
Voltage Vb ", need in the present embodiment find be data channel information domain 1122.Therefore,
Find the record data block first address 113 in recording head information 110 first based on above-mentioned index information
Skew, i.e. data channel information domain 1121 are voltage Va.Inclined from data channel information domain 1121
Certain digit is moved to data channel information domain 1122, so that the correspondence of location data channel information domain 1122
Record block message 120 in specific data.
Step S3 is finally performed, the data met in the record block message of index information are obtained.At this
In embodiment, that is, acquisition meets information " 20 minutes 35 November 11 day 23 point in 2015 without hesitation
Specific data in the voltage Vb " of second record block message 120, i.e. Vb concrete numerical value.
Above-described embodiment is only carried out with the specific data instance for obtaining a data channel information domain Vb
Illustrate, when needing to inquire about multiple data channel information domains, for example, need to inquire about data channel information
Domain Vb and Vc, data channel information domain 1122 and 1123 is displaced to from data channel information domain 1121
.
It should be noted that it will be appreciated by those skilled in the art that above to first carry out step S1 again
Perform step S2 and describe the present invention, however, above-mentioned steps S1 and step S2 do not have it is strict suitable
Sequence, it might even be possible to parallel to perform S1 and S2 to realize the present invention.
Algorithm of the present invention is introduced below.
First, the data for the Power Quality Detection that definition is obtained based on computational methods are led to for a data
Road information field, and being expressed as each data channel information domain (t, v), wherein t are markers, v
For numeration evidence.Then, if the data source collection of electric energy quality monitoring index is combined into：
Ο={ oi| i=1 ... N }；
Record period collection is combined into：
Ρ={ pi| i=1 ..., L },
Computational methods collection is combined into:
Μ={ mi| i=1 ..., M },
Wherein N, L, M are respectively configurable data source, record period, computational methods total number.
The record period matrix of user configuring is：
Computational methods matrix is：
Therefore, the information matrix in data channel information domain is：
Wherein A and B are unitary matrice,And L0For the record period number of user configuring.Make stRepresent every
The space size of storage, S needed for the record markers of one data channel information domainvRepresent that each data leads to
The space size of storage needed for road information field record content.General storage method is taken, once institute
There is the data channel information domain record data total amount to be：
Wherein, the recording head information unit based on data channel information domain is：
(t, ΛOM, a)
Wherein, a represents data block head address.Data block unit is：
{vI, j, k|aI, j=1, bJ, k=1,1≤i≤L, 1≤j≤M, 1≤k≤N }
Make SHRepresent the space size stored needed for one based on data channel information domain record head, SB
Represent big based on the memory space needed for a record block of data channel information domain variable length model
It is small.SΛRepresent the storage size needed for the information matrix in data channel information domain, SaWith representing target
Storage size needed for the information of location, therefore, then the data total amount once recorded is：
The electric energy quality monitoring mechanism of power system provided with the present invention once all data channel informations
Numeric field data records the data volume that can be saved：
Because data channel information domain information matrix is 0-1 times, therefore bit can be used to store
With the space size needed for reduction.From Tables 1 and 2, power quality data Monitoring Data class
Other sum is much larger than the record period number that user is configured, and when target memory space
More than the memory space of address.The electric energy quality monitoring mechanism of the power system provided with the present invention
Although adding low volume data channel information, the storage of redundancy time scale information is greatly reduced,
So as to save substantial amounts of data space.
The recall precision based on markers hierarchical index mechanism is analyzed below.
If electric energy quality detection device data in storage medium total storage capacity is Y days, daily time
Index information is X bars.According to markers hierarchical index mechanism, inquiry any instant data record needs
The maximum read from memory space retrieves data volume：
23≤X≤25, Pi∈{pj|pj∈ P, cj≠ 0, j=1 ..., L }
Wherein SDRepresent a date index information, ShRepresent a time index information.Therefore, look into
Inquiry data volume needed for asking the record of any instant is less and is substantially fixed, therefore inquires about
Efficiency is efficient and stable.Because the access speed of storage medium is slow, embedded equipment should
The operation reduced to storage medium of trying one's best.Because the space of date index information is smaller, Ke Yikao
Worry is directly placed in Nonvolatile memory or when device starts in disposable loading internal memory.When
When date index updates in internal memory, it should be synchronously written into storage medium.
Second aspect of the present invention additionally provides the equipment for monitoring power quality 300 of power system, wherein,
As shown in figure 4, electric energy quality detection device 300 also includes inquiry unit 310, extracts parsing dress
Put 320, acquisition device 330.Wherein, inquiry unit 310 is used for according to index information inquiry
Monitoring record data in power system.Monitoring record data include recording head information and record block is believed
Breath, recording head information includes markers domain, data channel information domain and record data block first address.
Extracting resolver 320 is used to extract corresponding record head letter in power system based on index information
Breath, to parse the markers domain and data channel information domain in recording head information.Acquisition device 330 is used
The data in the record block message of information without hesitation are met in acquisition.
Specifically, index information includes time information and date index information without hesitation, wherein, it is described
Resolver 320 is extracted to be additionally operable to extract electricity based on date index information and time index information grading
Corresponding recording head information in Force system.
Also, extract resolver 320 be additionally operable to classification parsing recording head information in markers domain and
Data channel information domain.
Further the extraction resolver 320 is additionally operable to based on index information successively from record number
Offset according to block first address, with the specific number in the corresponding record block message in location data channel information domain
According to.
Wherein, inquiry unit 310 is performed for step S1 described above, extracts resolver
320 are performed for step S2 described above, and acquisition device 330 is described above for performing
Step S3.Also hereinbefore it is described in detail as specific algorithm.Those skilled in the art should
Work as understanding, the equipment for monitoring power quality and the present invention of the power system that second aspect of the present invention is provided
The electric energy quality monitoring method for the power system that first aspect is provided is corresponded, and prior art is
The software and hardware for having maturation is supported, for simplicity, is repeated no more.
Below using certain 110KV electric energy quality for substation monitoring index as data configuration position, in the change
Power station is run 2 hours, 1 day, 1 month, respectively to the uncorrected data order of the present invention and prior art
Change storage, the record data amount of storage of the electric energy quality monitoring mechanism of file system method and inquiry speed
Degree is made comparisons.Table 3 shows the electric energy quality for substation monitoring data of the 110V：
The electric energy quality monitoring data of certain transformer station of table 3
Table 4 shows the electric energy quality monitoring mechanism of two kinds of power systems of the present invention and prior art
Memory data output test result.
The memory data output test result of table 4
As seen from the above table, the data of the date storage method of above-mentioned four kinds of electric energy quality monitoring mechanism are deposited
Reserves linearly change over time.According to file system method, because data storage needs additionally
Document storage management information, so amount of storage is maximum.And the present invention is by being then based on data channel
Variable length data model method, memory data output is minimum.The present invention reduces the public of redundancy
Time scale information storage is recorded, so overall data amount of storage and the ordered storage method storage phase of data
Than a part of space can be saved.When more, the public record periods of the data channel stored in device
When more, the redundancy with variable length data model reduction is also more, and storage efficiency is higher.
Table 5 shows the electric energy quality monitoring mechanism of two kinds of power systems of the present invention and prior art
Monitoring record efficiency data query test result.
The monitoring record efficiency data query test result of table 5
The query rate value of upper table be inquire about last 1 hour of moment in Voltage unbalance, the 25th time
The retrieval time average value of voltage harmonic, the 25th primary current harmonic wave and short flickering.As shown in Table 5,
Application way III, the data record to certain amount of storage is inquired about, data access efficiency highest.
With the accumulation of storage time, the storage file generated in file system is more and more, file management
Efficiency can be declined slightly, but search efficiency is still very high.According to the ordered storage side of uncorrected data
Method, it is ordered due to retrieval data, data access efficiency with the change of amount of storage is big and rapid step-down.
In summary, the data storage and efficiency of management highest of Power Quality Detection mechanism of the invention,
And stability is best.
Although present disclosure is discussed in detail by above preferred embodiment, but it should
Recognize that the description above is not considered as limitation of the present invention.Read in those skilled in the art
Read after the above, a variety of modifications and substitutions for the present invention all will be apparent.Cause
This, protection scope of the present invention should be limited to the appended claims.In addition, should not be by right
It is required that in any reference be considered as limitation involved by claim；The word of " comprising " one is not excluded for
Unlisted device or step in other claims or specification；The words such as " first ", " second "
Only it is used for representing title, and is not offered as any specific order.
Claims (16)
1. the electric energy quality monitoring method of power system, wherein, comprise the following steps：
The monitoring record data (100) inquired about according to index information in the power system, the prison
Surveying record data (100) includes recording head information (110) and record block message (120), described
Recording head information (110) includes markers domain (111), data channel information domain (112) and note
Record data block first address (113)；
Corresponding recording head information (110) in the power system is extracted based on index information, to solve
Markers domain (111) and data channel information domain (112) in new record header (110)；
Obtain the data met in the record block message (120) of the index information.
2. the electric energy quality monitoring method of power system according to claim 1, its feature exists
Include date information (210) and time index information (220) without hesitation in, the index information, its
In, the extraction step also includes：
- based on described in date index information (210) and time index information (220) grading extraction
Corresponding recording head information (110) in power system.
3. the electric energy quality monitoring method of power system according to claim 1, its feature exists
Include date information (210) and time index information (220) without hesitation in, the index information, its
In, the analyzing step also includes：
Markers domain (111) and data channel information domain in-classification parsing recording head information (110)
(112)。
4. the electric energy quality monitoring method of power system according to claim 1, its feature exists
In the index step also includes：
- successively offset based on the index information from the record data block first address (113), with
Position the specific number in the corresponding record block message (120) of the data channel information domain (112)
According to.
5. the electric energy quality monitoring method of power system according to claim 1, its feature exists
In：The each data channel information domain (112) is (t, v), and wherein t is markers, and v is number
According to,
Data source collection is combined into O={ oi| i=1 ... N }, record period collection is combined into P={ pi| i=1 ..., L }, computational methods
Collection is combined into Μ={ mi| i=1 ..., M }.
6. the electric energy quality monitoring method of power system according to claim 1, its feature exists
In the information matrix of the data channel information domain (112) is：
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</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<mi>L</mi>
<mo>&times;</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>=</mo>
<msub>
<mi>A</mi>
<mrow>
<mi>L</mi>
<mo>&times;</mo>
<mi>L</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mfenced open = "(" close = ")">
<mtable>
<mtr>
<mtd>
<msub>
<mi>I</mi>
<mrow>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mn>0</mn>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<mi>L</mi>
<mo>&times;</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>B</mi>
<mrow>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mfenced open = "(" close = ")">
<mtable>
<mtr>
<mtd>
<msub>
<mover>
<mi>c</mi>
<mo>&OverBar;</mo>
</mover>
<mn>1</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mtable>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
</mtable>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mover>
<mi>c</mi>
<mo>&OverBar;</mo>
</mover>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
<mo>&times;</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
<mo>,</mo>
</mrow>
Wherein, A and B are unitary matrice,And L0For the record period number of user configuring.
7. the electric energy quality monitoring method of power system according to claim 1, its feature exists
In the data block unit is：
{vi,j,k|ai,j=1, bj,k=1,1≤j≤M, 1≤k≤N }.
8. the electric energy quality monitoring method of power system according to claim 1, its feature exists
In the species of the data channel information domain (112) includes any one of following or appointed multinomial：
- frequency；
- voltage；
- Voltage unbalance；
- voltage harmonic；
- voltage m-Acetyl chlorophosphonazo；
- carrier voltage；
- voltage supplied deviation；
- flickering；
- active power；
- reactive power.
9. the equipment for monitoring power quality of power system, wherein, including：
Inquiry unit (310), it is used for the monitoring inquired about according to index information in the power system
Record data (100), the monitoring record data (100) include recording head information (110) and
Block message (120) is recorded, the recording head information (110) includes markers domain (111), data
Channel information domain (112) and record data block first address (113)；
Resolver (320) is extracted, it is used to extract phase in the power system based on index information
The recording head information (110) answered, to parse the markers domain (111) in recording head information (110)
With data channel information domain (112)；
Acquisition device (330), it is used to obtain the record block message (120) for meeting index information
In data.
10. the equipment for monitoring power quality of power system according to claim 9, its feature
It is, the index information includes time information (210) and date index information (220) without hesitation,
Wherein, the extraction resolver is additionally operable to：
- based on described in date index information (210) and time index information (220) grading extraction
Corresponding recording head information (110) in power system.
11. the equipment for monitoring power quality of power system according to claim 9, its feature exists
Include time information (210) and date index information (220) without hesitation in, the index information, its
In, the extraction resolver is additionally operable to：
Markers domain (111) and data channel information domain in-classification parsing recording head information (110)
(112)。
12. the equipment for monitoring power quality of power system according to claim 9, its feature
It is, the extraction resolver is additionally operable to：
- successively offset based on the index information from the record data block first address (113), with
Position the specific number in the corresponding record block message (120) of the data channel information domain (112)
According to.
13. the equipment for monitoring power quality of power system according to claim 9, its feature
It is：The each data channel information domain (112) is (t, v), and wherein t is markers, and v is
Data,
Data source collection is combined into O={ oi| i=1 ... N }, record period collection is combined into P={ pi| i=1 ..., L }, computational methods
Collection is combined into Μ={ mi| i=1 ..., M }.
14. the equipment for monitoring power quality of power system according to claim 9, its feature
It is, the information matrix of the data channel information domain (112) is：
<mrow>
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>&Lambda;</mi>
<mi>C</mi>
</msub>
<mo>=</mo>
<msub>
<mi>&Lambda;</mi>
<mrow>
<mi>P</mi>
<mi>O</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>&Lambda;</mi>
<mrow>
<mi>O</mi>
<mi>M</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mfenced open = "(" close = ")">
<mtable>
<mtr>
<mtd>
<mn>1</mn>
</mtd>
</mtr>
<mtr>
<mtd>
<mtable>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
</mtable>
</mtd>
</mtr>
<mtr>
<mtd>
<mn>1</mn>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<mi>M</mi>
<mo>&times;</mo>
<mn>1</mn>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mfenced open = "(" close = ")">
<mtable>
<mtr>
<mtd>
<msub>
<mi>c</mi>
<mn>1</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mtable>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
</mtable>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>c</mi>
<mi>L</mi>
</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<mi>L</mi>
<mo>&times;</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>=</mo>
<msub>
<mi>A</mi>
<mrow>
<mi>L</mi>
<mo>&times;</mo>
<mi>L</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mfenced open = "(" close = ")">
<mtable>
<mtr>
<mtd>
<msub>
<mi>I</mi>
<mrow>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mn>0</mn>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<mi>L</mi>
<mo>&times;</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>B</mi>
<mrow>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mfenced open = "(" close = ")">
<mtable>
<mtr>
<mtd>
<msub>
<mover>
<mi>c</mi>
<mo>&OverBar;</mo>
</mover>
<mn>1</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mtable>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<mo>.</mo>
</mtd>
</mtr>
</mtable>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mover>
<mi>c</mi>
<mo>&OverBar;</mo>
</mover>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
<mrow>
<msub>
<mi>L</mi>
<mn>0</mn>
</msub>
<mo>&times;</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
<mo>,</mo>
</mrow>
Wherein, A and B are unitary matrice,And L0For the record period number of user configuring.
15. the equipment for monitoring power quality of power system according to claim 9, its feature
It is, the data block unit is：
{vi,j,k|ai,j=1, bj,k=1,1≤j≤M, 1≤k≤N }.
16. the equipment for monitoring power quality of power system according to claim 9, its feature
It is, the species of the data channel information domain (112) includes any one of following or appointed multinomial：
- frequency；
- voltage；
- Voltage unbalance；
- voltage harmonic；
- voltage m-Acetyl chlorophosphonazo；
- carrier voltage；
- voltage supplied deviation；
- flickering；
- active power；
- reactive power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184926.XA CN107238764B (en) | 2016-03-28 | 2016-03-28 | The electric energy quality monitoring method and device of electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184926.XA CN107238764B (en) | 2016-03-28 | 2016-03-28 | The electric energy quality monitoring method and device of electric system |
Publications (2)
| Publication Number | Publication Date |
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| CN107238764A true CN107238764A (en) | 2017-10-10 |
| CN107238764B CN107238764B (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610184926.XA Active CN107238764B (en) | 2016-03-28 | 2016-03-28 | The electric energy quality monitoring method and device of electric system |
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| Country | Link |
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| CN (1) | CN107238764B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320110A (en) * | 2018-03-06 | 2018-07-24 | 江阴长仪集团有限公司 | A kind of power information acquisition method and acquisition system |
| CN108762717A (en) * | 2018-05-21 | 2018-11-06 | 杭州海兴电力科技股份有限公司 | Meter reading success recording method, statistical method and benefit trick method based on Bit-map |
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|---|---|---|---|---|
| CN104408205A (en) * | 2014-12-19 | 2015-03-11 | 国家电网公司 | Method for simplifying power quality data interchange format PQDIF |
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| CN104408205A (en) * | 2014-12-19 | 2015-03-11 | 国家电网公司 | Method for simplifying power quality data interchange format PQDIF |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320110A (en) * | 2018-03-06 | 2018-07-24 | 江阴长仪集团有限公司 | A kind of power information acquisition method and acquisition system |
| CN108762717A (en) * | 2018-05-21 | 2018-11-06 | 杭州海兴电力科技股份有限公司 | Meter reading success recording method, statistical method and benefit trick method based on Bit-map |
| CN108762717B (en) * | 2018-05-21 | 2020-12-29 | 杭州海兴电力科技股份有限公司 | Meter reading success recording method, statistical method and recruitment method based on Bit-map |
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| Publication number | Publication date |
|---|---|
| CN107238764B (en) | 2019-08-30 |
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