CN108647626A - Power quality event and the incidence relation of the event origin cause of formation determine method and apparatus - Google Patents

Power quality event and the incidence relation of the event origin cause of formation determine method and apparatus Download PDF

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Publication number
CN108647626A
CN108647626A CN201810421814.0A CN201810421814A CN108647626A CN 108647626 A CN108647626 A CN 108647626A CN 201810421814 A CN201810421814 A CN 201810421814A CN 108647626 A CN108647626 A CN 108647626A
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China
Prior art keywords
event
power quality
formation
origin cause
disturbance
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CN201810421814.0A
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Chinese (zh)
Inventor
马智远
莫文雄
许中
王勇
栾乐
林金洪
周凯
张群峰
郭倩雯
谭子健
梁旭懿
程振华
邱智民
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广州供电局有限公司
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Priority to CN201810421814.0A priority Critical patent/CN108647626A/en
Publication of CN108647626A publication Critical patent/CN108647626A/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/00496Recognising patterns in signals and combinations thereof
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/62Methods or arrangements for recognition using electronic means
    • G06K9/6217Design or setup of recognition systems and techniques; Extraction of features in feature space; Clustering techniques; Blind source separation
    • G06K9/6218Clustering techniques

Abstract

The present invention relates to the incidence relations of power quality event and the event origin cause of formation to determine method, apparatus, computer equipment and storage medium, belongs to electric power network technique field.The method includes:Multiple power quality events are obtained, the corresponding power quality event of same disturbing source is integrated into a disturbance event;Determine the matching relationship between the disturbance event and the preset event origin cause of formation;Sliding-model control is carried out to the disturbance event, therefrom extracts affair character;The incidence relation between the affair character and the event origin cause of formation is determined according to the matching relationship.It is not accurate enough to solve the problems, such as that the incidence relation between power quality event and the origin cause of formation determines, can accurately determine the incidence relation between power quality event and the event origin cause of formation for above-mentioned technical proposal.

Description

Power quality event and the incidence relation of the event origin cause of formation determine method and apparatus

Technical field

The present invention relates to electric power network technique fields, are determined more particularly to the incidence relation of power quality event and the event origin cause of formation Method, apparatus, computer equipment and storage medium.

Background technology

Electric energy quality monitoring system (PQMS) has been realized in urban distribution network 110kV and above substation temporarily substantially The record and analysis of state and steady state data.Know currently, the strengthened research of electric energy quality monitoring data is mostly focused on disturbance type Not, source of trouble positioning, load on-line monitoring, electric energy quality synthesis evaluation etc., but it is to determine power quality event and event The research of incidence relation between reason is less.In addition, in realizing process of the present invention, inventor also found in the prior art at least There are the following problems:Incidence relation between the power quality event and the origin cause of formation that are determined by traditional method is not accurate enough.

Invention content

Based on this, the present invention provides the incidence relations of power quality event and the event origin cause of formation to determine method, apparatus, calculates Machine equipment and storage medium can accurately determine the incidence relation between power quality event and the event origin cause of formation.

The content of the embodiment of the present invention is as follows:

The incidence relation of a kind of power quality event and the event origin cause of formation determines method, includes the following steps:Obtain multiple electricity Energy quality events, a disturbance event is integrated by the corresponding power quality event of same disturbing source;Determine the disturbance event With the matching relationship between the preset event origin cause of formation;Sliding-model control is carried out to the disturbance event, therefrom extracts affair character; The incidence relation between the affair character and the event origin cause of formation is determined according to the matching relationship.

It is described in one of the embodiments, that the corresponding power quality event of same disturbing source is integrated into a disturbance thing The step of part, including:Determine the space-time data of the power quality event;According to the space-time data to power quality event into Row clustering judges that the corresponding power quality event of same cluster classification belongs to the same disturbing source;By same disturbing source pair The power quality event answered is integrated into a disturbance event.

The corresponding power quality event of the same cluster classification of judgement belongs to same and disturbs in one of the embodiments, Before the step of dynamic source, further include:When the distance between barycenter and the corresponding space-time data of each cluster classification are less than or wait When preset threshold value, determine that cluster terminates.

Matching relationship between the determination disturbance event and the preset event origin cause of formation in one of the embodiments, The step of, including:Determine the space-time data of the disturbance event;The disturbance event and lightning stroke are determined according to the space-time data Matching relationship between circuit, transformer fault, breaker actuation and/or protection device action.

The power quality event includes transient event in one of the embodiments,;It is described to the disturbance event into Row sliding-model control, therefrom extract affair character the step of, including:Sliding-model control is carried out to the disturbance event, extracts institute State transient event amplitude, transient event duration, transient event position, the transient event place voltage class in disturbance event And/or action device type.

It is described in one of the embodiments, that the affair character and the event origin cause of formation are determined according to the matching relationship Between incidence relation the step of, including:According to the matching relationship and according to Strong association rule algorithm, the transient state thing is determined Voltage class where part amplitude, transient event duration, transient event position, transient event and/or action device type, with Incidence relation between the event origin cause of formation.

It is described in one of the embodiments, that the affair character and the event origin cause of formation are determined according to the matching relationship Between incidence relation the step of after, further include:Power quality event to be analyzed is obtained, the electric energy to be analyzed is extracted The affair character of quality events;The incidence relation is inquired according to the affair character, obtains the power quality to be analyzed The event origin cause of formation of event.

Correspondingly, the embodiment of the present invention provides a kind of incidence relation determining device of power quality event and the event origin cause of formation, Including:Event integrates module, and for obtaining multiple power quality events, the corresponding power quality event of same disturbing source is integrated For a disturbance event;Matching relationship determining module, for determining between the disturbance event and the preset event origin cause of formation With relationship;Characteristic extracting module therefrom extracts affair character for carrying out sliding-model control to the disturbance event;And it closes Join relationship determination module, for determining being associated between the affair character and the event origin cause of formation according to the matching relationship System.

The incidence relation of above-mentioned power quality event and the event origin cause of formation determines method and device, obtains multiple power quality things The corresponding power quality event of same disturbing source is integrated into a disturbance event, is integrated to data by part, follow-up to simplify Calculating;Determine the matching relationship between the disturbance event and the preset event origin cause of formation;The disturbance event is carried out discrete Change is handled, and therefrom extracts affair character;It is determined between the affair character and the event origin cause of formation according to the matching relationship Incidence relation.By the integration discrete processes to power quality event, outgoing event feature can be accurately determined with event at therefore Between relationship.

A kind of computer equipment, including memory, processor and storage can be run on a memory and on a processor Computer program, the processor realize following steps when executing the computer program:Multiple power quality events are obtained, it will The corresponding power quality event of same disturbing source is integrated into a disturbance event;Determine the disturbance event and preset event at Matching relationship because between;Sliding-model control is carried out to the disturbance event, therefrom extracts affair character;It is closed according to the matching System determines the incidence relation between the affair character and the event origin cause of formation.

Above computer equipment can accurately determine outgoing event spy by the integration discrete processes to power quality event Relationship between sign and the event origin cause of formation.

A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor Following steps are realized when row:Multiple power quality events are obtained, the corresponding power quality event of same disturbing source is integrated into one A disturbance event;Determine the matching relationship between the disturbance event and the preset event origin cause of formation;The disturbance event is carried out Sliding-model control therefrom extracts affair character;Determine the affair character with the event at therefore according to the matching relationship Between incidence relation.

Above computer readable storage medium storing program for executing can be accurately determined by the integration discrete processes to power quality event Relationship between outgoing event feature and the event origin cause of formation.

Description of the drawings

Fig. 1 is the application environment that the incidence relation of power quality event and the event origin cause of formation determines method in one embodiment Figure;

Fig. 2 is that the incidence relation of power quality event and the event origin cause of formation determines that the flow of method is illustrated in one embodiment Figure;

Fig. 3 is the voltage waveform in one embodiment;

Fig. 4 is the voltage waveform in another embodiment;

Fig. 5 is the voltage waveform in another embodiment;

Fig. 6 is that the incidence relation of power quality event and the event origin cause of formation determines that the flow of method is illustrated in another embodiment Figure;

Fig. 7 is the structure diagram of power quality event and the incidence relation determining device of the event origin cause of formation in one embodiment.

Specific implementation mode

In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.

The incidence relation of power quality event provided by the present application and the event origin cause of formation determines that method can be applied to such as Fig. 1 institutes In the computer equipment shown.The computer equipment can be server, and internal structure chart can be as shown in Figure 1.The computer Equipment includes processor, memory, network interface and the database connected by system bus.Wherein, the computer equipment Processor is for providing calculating and control ability.The memory of the computer equipment includes non-volatile memory medium, interior storage Device.The non-volatile memory medium is stored with operating system, computer program and database.The built-in storage is non-volatile deposits The operation of operating system and computer program in storage media provides environment.The database of the computer equipment is for storing electric energy The data such as quality events, disturbance event, affair character.The network interface of the computer equipment is used to pass through net with external terminal Network connection communication.To realize being associated with for a kind of power quality event and the event origin cause of formation when computer program is executed by processor System determines method.

It will be understood by those skilled in the art that structure shown in Fig. 1, is only tied with the relevant part of application scheme The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment May include either combining certain components than more or fewer components as shown in the figure or being arranged with different components.

The embodiment of the present invention provides a kind of power quality event and the incidence relation of the event origin cause of formation determines method, apparatus, meter Calculate machine equipment and storage medium.It is described in detail separately below.

In one embodiment, as shown in Fig. 2, the incidence relation for providing a kind of power quality event and the event origin cause of formation is true Determine method, includes the following steps:

S201, multiple power quality events are obtained, the corresponding power quality event of same disturbing source is integrated into one and is disturbed Dynamic event.

Wherein, power quality event includes transient event and stable state event.For example, transient event:Voltage swell, voltage are temporary Drop, voltage interruption;Stable state event:Out-of-limit in frequency, out-of-limit under frequency, out-of-limit on voltage, out-of-limit under voltage, voltage, electric current are humorous Wave is out-of-limit, and voltage, current total harmonic distortion rate are out-of-limit, uneven out-of-limit.It is, of course, also possible to including other power quality things Part.

It should be noted that power quality event can refer to multiple areas, the event of multiple periods, obtain as more as possible Power quality event can obtain the incidence relation between more fully affair character and the event origin cause of formation.The embodiment of the present invention is to obtaining The mode of power quality event is taken not to be limited.

As shown in figure 3, causing switch to close a floodgate for transformer switch perseveration unsuccessfully causes the voltage waveform of voltage interruption. The event of the voltage interruption is exactly power quality event.

Disturbance refers to that electric system is interfered, destroys, and disturbing source refers to causing the source of disturbance to electric system Head, disturbing source include but not limited to some region of line fault tripping, protective switch for transformer action etc..

The possible quantity of power quality event of acquisition is huger, and includes the data of numerous disturbing sources.This step will be same The corresponding power quality event of one disturbing source is integrated into a disturbance event, as a logout.

The embodiment of the present invention is not limited the specific Integration Mode of power quality event.

S202, matching relationship between the disturbance event and the preset event origin cause of formation is determined.

Wherein, the reason of event origin cause of formation refers to causing power quality event, can be according to breaker actuation data, protection The data such as device action data, alert data, live line inspection data determine.Therefore, these event origin causes of formation can be lightning stroke line Road, transformer fault, breaker actuation, protection device action etc., can also be that other may cause the original of power quality event Cause.

In one embodiment, it determines that the event origin cause of formation of a certain disturbance event can be artificial determination, can also be reference The database pre-established determines, can also be and is determined according to a certain algorithm.Whether through what mode definite event The origin cause of formation, these event origin causes of formation should have higher accuracy.

This step determines the matching relationship between disturbance event and the event origin cause of formation, which can be artificial determination , can also be to be determined according to specific algorithm.It is corresponding that determining matching relationship makes each disturbance event have The event origin cause of formation, i.e. each disturbance event can find its cause.

S203, sliding-model control is carried out to the disturbance event, therefrom extracts affair character.

In one embodiment, it can split the corresponding data of disturbance event to carry out sliding-model control to disturbance event For multiple compositing factors, such as:By the time of origin of a certain disturbance event, the duration, place, corresponding equipment, occurrence frequency, The information such as voltage magnitude are extracted from the disturbance event, select wherein more important, representative feature as The affair character of the disturbance event.

Wherein, affair character includes but not limited to voltage magnitude, duration, event location, place voltage class, equipment Type.These corresponding disturbance events of affair character energy Efficient Characterization;There is universality to other power quality events simultaneously, because The information such as voltage magnitude, duration are also will include for other power quality events, when the thing of certain two power quality event Part feature is consistent, it is believed that the two power quality events are caused by the same event origin cause of formation.

S204, incidence relation between the affair character and the event origin cause of formation is determined according to the matching relationship.

Wherein, incidence relation refers to the one-to-one or one-to-many relationship between affair character and the event origin cause of formation, the pass Connection relationship makes each affair character have the corresponding event origin cause of formation.In addition, between affair character and the event origin cause of formation Incidence relation can also refer to the incidence relation between affair character and corresponding equipment, therefore, can be fixed according to the correspondence Position goes out corresponding equipment, so that the equipment is debugged or repaired.

Since affair character is extracted from disturbance event, and disturbance event and event are had determined that in step S202 Therefore matching relationship between the origin cause of formation simply, directly can determine affair character and event at therefore according to the matching relationship Between incidence relation.

The present embodiment is carried out by the different disturbance events that are integrated into power quality event, and to these disturbance events Discrete processes extract affair character therein, can accurately determine outgoing event feature in this way with event at therefore Between relationship.In addition, these affair characters are the characteristic features of each power quality event, can by the affair character of foundation with Incidence relation between the event origin cause of formation is generalized to as the relationship of a universality in all power quality events.

In one embodiment, described that the corresponding power quality event of same disturbing source is integrated into disturbance event Step, including:Determine the space-time data of the power quality event;Power quality event is gathered according to the space-time data Alanysis judges that the corresponding power quality event of same cluster classification belongs to the same disturbing source;Same disturbing source is corresponding Power quality event is integrated into a disturbance event.

Wherein, the point in the two-dimensional space in the equal pot life-space of each power quality event indicates, therefore, space-time number According to referring to temporal information and spatial information (i.e. location information) etc..

Same disturbing source failure may trigger a lot of power quality events, and therefore, the present embodiment gathers space-time data Class operation, space-time data can be shown that the time and location that power quality event occurs, and therefore, after clustering operation, energy will be same The power quality event (the power quality event of i.e. same disturbing source) that one period or same place occur is polymerized to one and gathers Class classification.Based on this, it can realize the clustering to power quality event, i.e., the record of power quality event is divided by same Multiple set of records ends caused by one disturbing source, each set of records ends is as a disturbance event.

In one embodiment, before being clustered to space-time data, the time of power quality event and space are believed Breath is converted into numerical value (carrying out certain processing to time and spatial information, be integrated into a numerical value), which can characterize pair The power quality event answered.

In one embodiment, clustering is carried out to space-time data and pedigree cluster (hierarchical may be used Clustering), the methods of quick clustering (K-means), two-phase analyzing method (Two-Step).

The corresponding power quality event of same disturbing source is integrated into a disturbance event by the present embodiment, convenient for analysis electric energy The formation mechenism of quality events explains the evolution of corresponding event.

In one embodiment, the corresponding power quality event of the same cluster classification of judgement belongs to the same disturbing source The step of before, further include:When the distance between barycenter and the corresponding space-time data of each cluster classification are less than or equal in advance If threshold value when, determine cluster terminates.

In one embodiment, record time and the record position information of transient event are extracted.To time and space number During carrying out K-means clusters, the distance between each space-time data and corresponding barycenter are calculated, when the distance is less than When given threshold, judge that the corresponding power quality event of the barycenter is caused by same disturbing source.

In one embodiment, the distance between space-time data and barycenter can refer to Euclidean distance.The present embodiment is pre- to this If threshold value be not limited.

The present embodiment is accomplished that the process clustered to space-time data, whether judges cluster by the comparison of distance Terminate, can quickly determine clustering as a result, improving the efficiency of incidence relation determination process.

In one embodiment, the step of the matching relationship between the determination disturbance event and the preset event origin cause of formation Suddenly, including:Determine the space-time data of the disturbance event;The disturbance event and lightning stroke line are determined according to the space-time data Matching relationship between road, transformer fault, breaker actuation and/or protection device action.

In one embodiment, the events origin cause of formation such as lightning stroke circuit, transformer fault, breaker actuation, protection device action It is determined according to data such as breaker actuation data, protection device action data, alert data, live line inspection data.Its In, lightning stroke circuit refers to that after the circuit influenced by lightning stroke, circuit are struck by lightning circuit breaker trip may be caused, and leads to electricity Pressure is interrupted;Transformer fault can refer to Cooler Fault, stream oil or oil pump fault etc., which can cause the unstable of voltage, Although coverage is smaller but influence degree is serious;Breaker actuation can refer to unlatching and the closure of breaker;Protect equipment Action can refer to the actions such as reset, feedback, the power-off of power equipment.

In one embodiment, determining the process of the matching relationship between disturbance event and the event origin cause of formation can be:It utilizes Rule matching method in Data Integration, the time that disturbance event occurs using each disturbance event as object and position As matching key, is built using matching and calculate separately disturbance event and action event (breaker actuation data, protection device action number According to, alert data, live line inspection data) similarity, and matched successively with the corresponding event origin cause of formation, realize multi-source data It is integrated.

In one embodiment, the matching relationship between disturbance event and the event origin cause of formation is exemplified below:Establish A power supply bureaus hair Raw voltage interruptionMatching relationship between lightning stroke circuit keeps user quick when learning that voltage interruption occurs for A power supply bureaus Determine the matched event origin cause of formation:Be struck by lightning circuit.

The matching relationship that the present embodiment determines is more comprehensive, can also simplify follow-up determine between affair character and the event origin cause of formation Incidence relation.

In one embodiment, the power quality event includes transient event;It is described to the disturbance event carry out from Dispersion is handled, therefrom the step of extraction affair character, including:Sliding-model control is carried out to the disturbance event, is disturbed described in extraction Voltage class where transient event amplitude, transient event duration, transient event position, transient event in dynamic event and/ Or action device type.

In one embodiment, matching relationship number can be established according to the matching relationship between disturbance event and the event origin cause of formation According to library, the correspondence between disturbance event and affair character can also be established corresponding relation database.It needs to be determined that disturbing When the affair character of dynamic event, corresponding affair character can be simply known by inquiring above-mentioned two database.

In one embodiment, such as the explanation of S201, disturbing source would generally cause nearby electrical substation monitoring to transient event, Different types of disturbing source can cause different types of transient event.Transient event is now exemplified below (specific voltage waveform As shown in Figure 3):

(1) 110kV substations of A power supply bureaus, transformer switch action, record the time:2018/1/2210:30:57;

(2) 110kV substations of A power supply bureaus, transformer switch action, record the time:2018/1/2210:30:58;

(3) 110kV substations of A power supply bureaus, transformer switch action, record the time:2018/1/2210:31:05.

The disturbing source of these transient events is occurred in A power supply bureaus, by clustering, these transient events are whole It is combined into a disturbance event:2018/01/22 10:30:57 to 2,018,/01,/22 10:31:05, A substation of power supply bureau 110kV transformer switch perseverations, final switch, which closes a floodgate, unsuccessfully causes voltage interruption.

It is obtained after being integrated power quality event due to disturbance event, thing is extracted from disturbance event Part feature namely extracts affair character from power quality event indirectly.The affair character extracted from above-mentioned disturbance event Can be 110kV voltages, voltage interruption, the duration is short, amplitude is small etc..

The present embodiment extracts affair character from disturbance event, these affair characters can characterize corresponding disturbance event and tool There are certain universality, the convenient subsequently determination to the event origin cause of formation of power quality event to be analyzed.

In one embodiment, described to be determined between the affair character and the event origin cause of formation according to the matching relationship Incidence relation the step of, including:According to the matching relationship and according to Strong association rule algorithm, the transient event width is determined Value, transient event duration, transient event position, voltage class where transient event and/or action device type, and it is described Incidence relation between the event origin cause of formation.

Wherein, Strong association rule algorithm is a kind of important algorithm in data mining.The Strong association rule algorithm is being classified On belong to one-dimensional, single layer and Boolean Association Rules, typical algorithm is Apriori algorithm.

Incidence relation between affair character and the event origin cause of formation can be exemplified below:

1) Fig. 4 is the voltage waveform of a certain transient event, as shown in figure 4, in the range of hits 600-100, A phases/B A degree of decline has occurred in the voltage magnitude of phase/C phases, but the duration is not grown.Therefore, the event therefrom extracted is special Sign is:{ voltage dip }, { duration is very short }, { amplitude very little }, { overlapping brake apparatus }, the event origin cause of formation of the transient event is Be struck by lightning circuit.Therefore, above-mentioned affair character and lightning stroke circuit are established into incidence relation;

2) Fig. 5 is the voltage waveform of another transient event, as shown in figure 5, in the range of hits 600-4500, A phases/ A degree of rising has occurred in the voltage magnitude of B phases, and there are a degree of declines for the voltage magnitude of C phases, but holds The continuous time is not grown.Therefore, the affair character therefrom extracted is:{ 110kV }, { voltage swell }, { duration is short }, { amplitude It is small }, the event origin cause of formation of the transient event is transform er backup protection action.Therefore, by above-mentioned affair character and transformer backup Protection act establishes incidence relation.

The present embodiment determines the incidence relation between affair character and the event origin cause of formation, which can be used as one With reference to the genetic analysis for instructing the following power quality event.

In one embodiment, described to be determined between the affair character and the event origin cause of formation according to the matching relationship Incidence relation the step of after, further include:Power quality event to be analyzed is obtained, the power quality to be analyzed is extracted The affair character of event;The incidence relation is inquired according to the affair character, obtains the power quality event to be analyzed The event origin cause of formation.

It in one embodiment, can be according to these after determining the incidence relation between affair character and the event origin cause of formation Incidence relation builds incidence relation database, when needing to analyze a certain power quality event to be analyzed, inquires association pass It is that database would know that the event origin cause of formation of the power quality event and corresponding action device type.

Based on the description in the first two embodiment, affair character is associated with the event origin cause of formation (transformer fault) foundation System, therefore, when the affair character of a certain power quality event to be analyzed be 110kV voltages, voltage interruption, duration it is short, When amplitude is one or more of small, so that it may which, to determine its event origin cause of formation as transformer fault, corresponding action device type is Transformer.

The present embodiment can simply and easily really by the incidence relation between established affair character and the event origin cause of formation The event origin cause of formation of fixed power quality event to be analyzed.It is difficult to determine failure or different using only substation's record power quality data The occurrence cause of ordinary affair part, the present embodiment can sum up next incidence relation to determine this substation in conjunction with each substation The event origin cause of formation of power quality event, the event origin cause of formation determined is comprehensive and accurate, aids in determining whether the source of power quality event Position and take necessary control measures.

In one embodiment, as shown in fig. 6, providing a kind of time origin cause of formation of power quality event determines method, including Following steps:

S601, multiple power quality events are obtained.

S602, the space-time data for determining the power quality event.

S603, clustering is carried out to power quality event according to the space-time data.

S604, when the distance between barycenter and corresponding space-time data of each cluster classification are less than or equal to preset threshold When value, determine that cluster terminates.

S605, the corresponding power quality event of the same cluster classification of judgement belong to the same disturbing source.

S606, the corresponding power quality event of same disturbing source is integrated into a disturbance event.

S607, between the disturbance event and the event origin cause of formation is determined according to the space-time data of the power quality event With relationship.

S608, sliding-model control is carried out to the disturbance event, extracts transient event amplitude in the disturbance event, temporarily Voltage class where state incident duration, transient event position, transient event and/or action device type.

S609, according to the matching relationship and according to Strong association rule algorithm, determine the transient event amplitude, transient state thing Voltage class where part duration, transient event position, transient event and/or action device type, with the event origin cause of formation Between incidence relation.

S610, power quality event to be analyzed is obtained, extracts the affair character of the power quality event to be analyzed.

S611, the incidence relation is inquired according to the affair character, obtains the power quality event to be analyzed The event origin cause of formation.

The present embodiment by the different disturbance events that are integrated into power quality event, and to these disturbance events carry out from Processing is dissipated, affair character therein is extracted, can accurately determine between outgoing event feature and the event origin cause of formation in this way Relationship.

It should be noted that for each method embodiment above-mentioned, describes, be all expressed as a series of for simplicity Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the described action sequence, because according to According to the present invention, certain steps may be used other sequences or be carried out at the same time.

The identical think of of method is determined based on power quality event and the incidence relation of the event origin cause of formation in above-described embodiment Think, the present invention also provides the incidence relation determining device of power quality event and the event origin cause of formation, which can be used for executing above-mentioned Power quality event and the incidence relation of the event origin cause of formation determine method.For convenience of description, power quality event and the event origin cause of formation Incidence relation determining device embodiment structural schematic diagram in, illustrate only and the relevant part of the embodiment of the present invention, this Field technology personnel are appreciated that the restriction of schematic structure not structure twin installation, may include more more or fewer than illustrating Component either combines certain components or different components arrangement.

As described in Figure 7, the incidence relation determining device of power quality event and the event origin cause of formation includes that event integrates module 701, matching relationship determining module 702, characteristic extracting module 703 and incidence relation determining module 704, detailed description are as follows:

Event integrates module 701, for obtaining multiple power quality events, by the corresponding power quality thing of same disturbing source Part is integrated into a disturbance event.

Matching relationship determining module 702, for determining that the matching between the disturbance event and the preset event origin cause of formation is closed System.

Characteristic extracting module 703 therefrom extracts affair character for carrying out sliding-model control to the disturbance event.

And incidence relation determining module 704, for determining the affair character and the thing according to the matching relationship Incidence relation between the part origin cause of formation.

The present embodiment by the different disturbance events that are integrated into power quality event, and to these disturbance events carry out from Processing is dissipated, affair character therein is extracted, can accurately determine between outgoing event feature and the event origin cause of formation in this way Relationship.

In one embodiment, the event integrates module 701, including:Data determination sub-module, for determining the electricity The space-time data of energy quality events;Affair clustering submodule, for being gathered to power quality event according to the space-time data Alanysis judges that the corresponding power quality event of same cluster classification belongs to the same disturbing source;Event integrates submodule, is used for The corresponding power quality event of same disturbing source is integrated into a disturbance event.

In one embodiment, further include:Cluster module, for when each barycenter for clustering classification and corresponding space-time number According to the distance between be less than or equal to preset threshold value when, determine cluster terminates.

In one embodiment, the matching relationship determining module 702 is additionally operable to determine the space-time number of the disturbance event According to;The disturbance event and lightning stroke circuit, transformer fault, breaker actuation and/or protection are determined according to the space-time data Matching relationship between device action.

In one embodiment, the characteristic extracting module 703 is additionally operable to carry out at discretization the disturbance event Reason extracts transient event amplitude in the disturbance event, transient event duration, transient event position, transient event institute In voltage class and/or action device type.

In one embodiment, the incidence relation determining module 704, is additionally operable to according to the matching relationship and according to strong Association rule algorithm determines the transient event amplitude, transient event duration, transient event position, transient event place Incidence relation between voltage class and/or action device type, with the event origin cause of formation.

In one embodiment, further include:Feature acquisition module is extracted for obtaining power quality event to be analyzed The affair character of the power quality event to be analyzed;Origin cause of formation determining module, for according to described in affair character inquiry Incidence relation obtains the event origin cause of formation of the power quality event to be analyzed.

It should be noted that the incidence relation determining device and the present invention of the power quality event of the present invention and the event origin cause of formation The incidence relation of power quality event and the event origin cause of formation determine that method corresponds, above-mentioned power quality event and event at The incidence relation of cause determine method embodiment illustrate technical characteristic and advantage be suitable for power quality event with In the embodiment of the incidence relation determining device of the event origin cause of formation, particular content can be found in the narration in the method for the present invention embodiment, Details are not described herein again, hereby give notice that.

In addition, in the embodiment of the incidence relation determining device of the power quality event of above-mentioned example and the event origin cause of formation, The logical partitioning of each program module is merely illustrative of, can be as needed in practical application, such as matching for corresponding hardware It sets requirement or the convenient of the realization of software considers, above-mentioned function distribution is completed by different program modules, i.e., by the electricity Can quality events be divided into different program modules from the internal structure of the incidence relation determining device of the event origin cause of formation, with complete with The all or part of function of upper description.

In one embodiment, a kind of computer equipment is provided, including memory, processor and storage are on a memory And the computer program that can be run on a processor, processor realize following steps when executing computer program:Obtain multiple electricity Energy quality events, a disturbance event is integrated by the corresponding power quality event of same disturbing source;Determine the disturbance event With the matching relationship between the preset event origin cause of formation;Sliding-model control is carried out to the disturbance event, therefrom extracts affair character; The incidence relation between the affair character and the event origin cause of formation is determined according to the matching relationship.

In one embodiment, following steps are also realized when processor executes computer program:It is described by same disturbing source The step of corresponding power quality event is integrated into a disturbance event, including:Determine the space-time number of the power quality event According to;Clustering is carried out to power quality event according to the space-time data, judges the corresponding power quality of same cluster classification Event belongs to the same disturbing source;The corresponding power quality event of same disturbing source is integrated into a disturbance event.

In one embodiment, following steps are also realized when processor executes computer program:The same cluster of judgement Before the step of corresponding power quality event of classification belongs to the same disturbing source, further include:When the barycenter of each cluster classification When the distance between corresponding space-time data is less than or equal to preset threshold value, determine that cluster terminates.

In one embodiment, following steps are also realized when processor executes computer program:The determination disturbance The step of matching relationship between event and the preset event origin cause of formation, including:Determine the space-time data of the disturbance event;According to The space-time data determines the disturbance event and lightning stroke circuit, transformer fault, breaker actuation and/or protection device action Between matching relationship.

In one embodiment, following steps are also realized when processor executes computer program:The power quality event Including transient event;It is described to the disturbance event carry out sliding-model control, therefrom extract affair character the step of, including:It is right The disturbance event carries out sliding-model control, extract transient event amplitude in the disturbance event, the transient event duration, Voltage class where transient event position, transient event and/or action device type.

In one embodiment, following steps are also realized when processor executes computer program:It is described according to the matching Relationship determines the step of incidence relation between the affair character and the event origin cause of formation, including:According to the matching relationship And according to Strong association rule algorithm, determine the transient event amplitude, transient event duration, transient event position, transient state Incidence relation between voltage class where event and/or action device type, with the event origin cause of formation.

In one embodiment, following steps are also realized when processor executes computer program:It is described according to the matching After relationship determines the step of incidence relation between the affair character and the event origin cause of formation, further include:It obtains to be analyzed Power quality event, extract the affair character of the power quality event to be analyzed;Institute is inquired according to the affair character Incidence relation is stated, the event origin cause of formation of the power quality event to be analyzed is obtained.

In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated Machine program realizes following steps when being executed by processor:Multiple power quality events are obtained, by the corresponding electric energy of same disturbing source Quality events are integrated into a disturbance event;Determine the matching relationship between the disturbance event and the preset event origin cause of formation;It is right The disturbance event carries out sliding-model control, therefrom extracts affair character;The affair character is determined according to the matching relationship With the incidence relation between the event origin cause of formation.

In one embodiment, following steps are also realized when computer program is executed by processor:It is described by same disturbance The step of corresponding power quality event in source is integrated into a disturbance event, including:Determine the space-time of the power quality event Data;Clustering is carried out to power quality event according to the space-time data, judges the corresponding electric energy matter of same cluster classification Amount event belongs to the same disturbing source;The corresponding power quality event of same disturbing source is integrated into a disturbance event.

In one embodiment, following steps are also realized when computer program is executed by processor:The judgement is same poly- Before the step of corresponding power quality event of class classification belongs to the same disturbing source, further include:When the matter of each cluster classification When the distance between the heart and corresponding space-time data are less than or equal to preset threshold value, determine that cluster terminates.

In one embodiment, following steps are also realized when computer program is executed by processor:It is disturbed described in the determination The step of moving the matching relationship between event and the preset event origin cause of formation, including:Determine the space-time data of the disturbance event;Root Determine that the disturbance event and lightning stroke circuit, transformer fault, breaker actuation and/or protection equipment are dynamic according to the space-time data Matching relationship between work.

In one embodiment, following steps are also realized when computer program is executed by processor:The power quality thing Part includes transient event;It is described to the disturbance event carry out sliding-model control, therefrom extract affair character the step of, including: Sliding-model control is carried out to the disturbance event, extracts transient event amplitude in the disturbance event, when transient event continues Between, transient event position, voltage class where transient event and/or action device type.

In one embodiment, following steps are also realized when computer program is executed by processor:Described in the basis The step of incidence relation between the affair character and the event origin cause of formation being determined with relationship, including:It is closed according to the matching It is and according to Strong association rule algorithm to determine the transient event amplitude, transient event duration, transient event position, temporarily Incidence relation between voltage class where state event and/or action device type, with the event origin cause of formation.

In one embodiment, following steps are also realized when computer program is executed by processor:Described in the basis After the step of determining the incidence relation between the affair character and the event origin cause of formation with relationship, further include:It obtains and waits for point The power quality event of analysis extracts the affair character of the power quality event to be analyzed;It is inquired according to the affair character The incidence relation obtains the event origin cause of formation of the power quality event to be analyzed.

It will appreciated by the skilled person that realizing all or part of flow in above-described embodiment method, being can It is completed with instructing relevant hardware by computer program, the program can be stored in a computer-readable storage and be situated between In matter, sells or use as independent product.The more specific example (non-exhaustive list) of computer-readable medium includes Below:Electrical connection section (electronic device) with one or more wiring, portable computer diskette box (magnetic device), arbitrary access Memory (RAM), read-only memory (ROM), erasable edit read-only storage (EPROM or flash memory), optical fiber dress It sets and portable optic disk read-only storage (CDROM).It can be printed on it in addition, computer-readable medium can even is that The paper of described program or other suitable media, because can be for example by carrying out optical scanner to paper or other media, then It is handled electronically to obtain described program, then by it into edlin, interpretation or when necessary with other suitable methods Storage is in computer storage.

It should be appreciated that each section of the present invention can be realized with hardware, software, firmware or combination thereof.Above-mentioned In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be executed with storage Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware Any one of row technology or their combination are realized:With the logic gates for realizing logic function to data-signal Discrete logic, with suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene Programmable gate array (FPGA) etc..

The term " comprising " and " having " of the embodiment of the present invention and their any deformations, it is intended that cover non-exclusive Including.Such as contain series of steps or the process, method, system, product or equipment of (module) unit are not limited to The step of listing or unit, but further include the steps that optionally not listing or unit, or further include optionally for these The intrinsic other steps of process, method, product or equipment or unit.

Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, it is all considered to be the range of this specification record.

Several embodiments of the invention above described embodiment only expresses, should not be understood as to the scope of the claims of the present invention Limitation.It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the premise, Various modifications and improvements can be made, these are all within the scope of protection of the present invention.Therefore, the protection domain of patent of the present invention It should be determined by the appended claims.

Claims (10)

1. the incidence relation of a kind of power quality event and the event origin cause of formation determines method, which is characterized in that include the following steps:
Multiple power quality events are obtained, the corresponding power quality event of same disturbing source is integrated into a disturbance event;
Determine the matching relationship between the disturbance event and the preset event origin cause of formation;
Sliding-model control is carried out to the disturbance event, therefrom extracts affair character;
The incidence relation between the affair character and the event origin cause of formation is determined according to the matching relationship.
2. the incidence relation of power quality event according to claim 1 and the event origin cause of formation determines method, which is characterized in that The described the step of corresponding power quality event of same disturbing source is integrated into a disturbance event, including:
Determine the space-time data of the power quality event;
Clustering is carried out to power quality event according to the space-time data, judges the corresponding power quality of same cluster classification Event belongs to the same disturbing source;
The corresponding power quality event of same disturbing source is integrated into a disturbance event.
3. the incidence relation of power quality event according to claim 2 and the event origin cause of formation determines method, which is characterized in that Before the step of corresponding power quality event of the same cluster classification of the judgement belongs to the same disturbing source, further include:
When the distance between barycenter and the corresponding space-time data of each cluster classification are less than or equal to preset threshold value, determination Cluster terminates.
4. the incidence relation of power quality event according to claim 1 and the event origin cause of formation determines method, which is characterized in that The step of matching relationship between the determination disturbance event and the preset event origin cause of formation, including:
Determine the space-time data of the disturbance event;
The disturbance event and lightning stroke circuit, transformer fault, breaker actuation and/or protection are determined according to the space-time data Matching relationship between device action.
5. the incidence relation of power quality event according to claim 1 and the event origin cause of formation determines method, which is characterized in that The power quality event includes transient event;
It is described to the disturbance event carry out sliding-model control, therefrom extract affair character the step of, including:
Sliding-model control is carried out to the disturbance event, extracts the transient event amplitude in the disturbance event, transient event is held Voltage class where continuous time, transient event position, transient event and/or action device type.
6. the incidence relation of power quality event according to claim 5 and the event origin cause of formation determines method, which is characterized in that The step of incidence relation determined according to the matching relationship between the affair character and the event origin cause of formation, including:
According to the matching relationship and according to Strong association rule algorithm, when determining that the transient event amplitude, transient event continue Between, transient event position, voltage class where transient event and/or the pass between action device type, with the event origin cause of formation Connection relationship.
7. the incidence relation of power quality event according to any one of claims 1 to 6 and the event origin cause of formation determines method, It is characterized in that, the step that the incidence relation between the affair character and the event origin cause of formation is determined according to the matching relationship After rapid, further include:
Power quality event to be analyzed is obtained, the affair character of the power quality event to be analyzed is extracted;
The incidence relation is inquired according to the affair character, obtains the event origin cause of formation of the power quality event to be analyzed.
8. the incidence relation determining device of a kind of power quality event and the event origin cause of formation, which is characterized in that including:
Event integrates module, and for obtaining multiple power quality events, the corresponding power quality event of same disturbing source is integrated For a disturbance event;
Matching relationship determining module, for determining the matching relationship between the disturbance event and the preset event origin cause of formation;
Characteristic extracting module therefrom extracts affair character for carrying out sliding-model control to the disturbance event;
And incidence relation determining module, for determining the affair character and the event origin cause of formation according to the matching relationship Between incidence relation.
9. a kind of computer equipment, including memory, processor and storage are on a memory and the meter that can run on a processor Calculation machine program, which is characterized in that the processor is realized when executing the computer program described in any one of claim 1 to 7 Method the step of.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The step of claim 1 to 7 any one of them method is realized when being executed by processor.
CN201810421814.0A 2018-05-04 2018-05-04 Power quality event and the incidence relation of the event origin cause of formation determine method and apparatus CN108647626A (en)

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