CN110825926A - Analysis method and system for automatically monitoring abnormal signals of power grid - Google Patents
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Abstract
The invention provides an analysis method for automatically monitoring abnormal signals of a power grid, which comprises the following steps: step S10, receiving the abnormal signal group of the real-time uploading power distribution station; step S11, standardizing each signal in the abnormal signal group, inquiring in a pre-established standardized library to obtain a standardized name corresponding to each signal to form a current signal group; step S12, matching whether the correlated power grid abnormal event exists in a pre-formed power grid event library; analyzing the abnormal events of the power grid corresponding to the current signal group or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output; in step S13, the output result is displayed on the display interface. The invention also provides a corresponding system. The invention can automatically monitor and analyze the abnormal signals of the power grid, can prevent the occurrence of signal leakage, and improves the comprehensiveness and accuracy of analysis.
Description
Technical Field
The invention relates to the field of power distribution networks, in particular to an analysis method and an analysis system for automatically monitoring abnormal signals of a power grid.
Background
With the continuous development and construction of a power grid, the power grid is larger and larger, the structure is more complex, a power grid company gradually pushes an unattended transformer substation and dispatching and monitoring integration (namely, a dispatching center of the power grid company is simultaneously responsible for the integrated operation of dispatching, monitoring and controlling), so that the signal quantity to be monitored by the dispatching center is increased continuously, a large number of signals are transmitted to a dispatching and monitoring screen in a short time particularly under the conditions of severe weather and complex faults, and in the prior art, a dispatcher of the dispatching center mainly carries out monitoring work on the power grid signals in a manual monitoring mode, so that the monitoring and analysis efficiency of the dispatcher on the power grid signals is lower, and the situations that signals are leaked and a plurality of signals are not analyzed in place manually are easy to exist.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an analysis method and system for automatically monitoring abnormal signals of a power grid, which can automatically monitor and analyze the abnormal signals of the power grid, prevent the occurrence of signal leakage, and improve the comprehensiveness and accuracy of analysis.
In order to solve the above technical problem, an aspect of the present invention provides an analysis method for automatically monitoring a power grid abnormal signal, where the method includes:
step S10, receiving an abnormal signal group uploaded in real time by the dispatching automation system from the power distribution station;
step S11, standardizing each signal in the abnormal signal group, inquiring in a pre-established standardized library to obtain a standardized name corresponding to each signal, and forming a current signal group;
step S12, according to the standardized name of each signal in the current signal group, matching whether the related power grid abnormal event exists in a pre-formed power grid event library; analyzing the abnormal events of the power grid corresponding to the current signal group obtained by matching or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output;
and step S13, displaying the output result on a display interface.
Preferably, the step S12 further includes:
step S120, inquiring whether an accurate matching item of the current signal group exists in the power grid event library, and if the accurate matching item of the current signal group exists in the power grid event library, outputting paraphrases corresponding to all standardized names in the current signal group and power grid abnormal event analysis corresponding to the current signal group;
step S121, if the query result is that no accurate matching item exists, whether a matching item containing the current signal group exists in the power grid event library is queried, and if the query result is that no matching item containing the current signal group exists, paraphrase analysis corresponding to each standardized name in the current signal group is directly output;
step S122, if the query result is that the matching item containing the current signal group exists, acquiring an additional standardized name except the standardized name contained in the current signal group in each matching item containing the current signal group;
step S123, inquiring whether the additional standardized names exist in the current power distribution station, and if the inquiry result is yes, outputting paraphrase analysis corresponding to each standardized name in the matching items and power grid abnormal event analysis corresponding to the matching items; if the query result is negative, the paraphrase analysis corresponding to each standardized name in the current signal group is directly output.
Preferably, further comprising:
the method comprises the steps of establishing a standardized library of abnormal signals of all power distribution stations in advance, wherein each standardized signal comprises a standardized name, a direct current screen source, an equipment source and a direct generation reason, and paraphrase analysis corresponding to the standardized name at least comprises the contents of the direct current screen source, the equipment source and the direct generation reason.
Preferably, further comprising:
and pre-establishing a power grid event library of abnormal signals of all the distribution stations, wherein each power grid abnormal event in the power grid event library is associated with at least one standardized signal in the standardization, and power grid abnormal analysis corresponding to each power grid abnormal event is stored.
Accordingly, in another aspect of the present invention, there is also provided an analysis system for automatically monitoring a power grid abnormal signal, including:
the receiving unit is used for receiving the abnormal signal group uploaded by the dispatching automation system in real time from the power distribution station;
the standardization processing unit is used for carrying out standardization processing on each signal in the abnormal signal group, inquiring in a standardization library established in advance, obtaining a standardization name corresponding to each signal and forming a current signal group;
the event matching unit is used for matching whether the related power grid abnormal event exists in a pre-formed power grid event library according to the standardized name of each signal in the current signal group; analyzing the power grid abnormal events corresponding to the current signal group obtained by matching or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output;
and the display unit is used for displaying the output result on a display interface.
Preferably, the event matching unit further includes:
the first query processing unit is used for querying whether an accurate matching item of the current signal group exists in the power grid event library or not, and if the query result is that the accurate matching item exists, outputting paraphrases corresponding to all standardized names in the current signal group and power grid abnormal event analysis corresponding to the current signal group;
the second query processing unit is used for querying whether a matching item containing the current signal group exists in the power grid event library or not when the query result obtained by the first query processing unit is that no accurate matching item exists, and directly outputting paraphrase analysis corresponding to each standardized name in the current signal group if the query result is that no matching item containing the current signal group exists;
an additional standardized name acquisition unit, configured to acquire, when the query result obtained by the second query processing unit is that there is a matching entry that includes the current signal group, an additional standardized name excluding the standardized name included in the current signal group in each matching entry that includes the current signal group;
the third query processing unit is used for querying whether the additional standardized name exists in the current power distribution station, and if the query result is yes, outputting paraphrase analysis corresponding to each standardized name in the matching items and power grid abnormal event analysis corresponding to the matching items; if the query result is negative, the paraphrase analysis corresponding to each standardized name in the current signal group is directly output.
Preferably, further comprising:
the standardized library forming unit is used for establishing a standardized library of abnormal signals of all the distribution stations in advance, wherein each standardized signal comprises a standardized name, a direct current screen source, an equipment source and a direct generation reason, and paraphrase analysis corresponding to the standardized name at least comprises the contents of the direct current screen source, the equipment source and the direct generation reason.
Preferably, further comprising:
and the power grid event library forming unit is used for establishing a power grid event library of abnormal signals of all the power distribution stations in advance, each power grid abnormal event in the power grid event library is associated with at least one standardized signal in the standardization, and power grid abnormal analysis corresponding to each power grid abnormal event is stored.
The embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, a signal point table of a power grid transformer substation is combined for combing, and the signal name is subjected to structuring, field formation and paraphrasing, so that a standardized signal library is established; combining historical signal processing records and typical event analysis of a dispatching center, and establishing a power grid event library taking the signal group as a mapping relation; and then, the real-time power grid signal group (1 or more signals) uploaded on site is subjected to standardization processing and then is matched with a power grid event library, and finally, the site abnormal problems or events reflected by the current real-time power grid signal group are output.
All uploaded abnormal signals can be automatically acquired through an analysis system for automatically monitoring abnormal signals of the power grid, and omission of signal monitoring can be avoided;
meanwhile, by matching and analyzing all the acquired uploaded abnormal signals, the paraphrasing of the real-time signal group and the analysis of the corresponding abnormal events can be automatically completed, the comprehensiveness and the accuracy of the analysis are improved, and therefore a dispatcher can quickly analyze and decide the abnormal signals.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic main flow diagram of an analysis method for automatically monitoring abnormal signals of a power grid according to the present invention;
FIG. 2 is a more detailed flowchart of step S12 of FIG. 1;
FIG. 3 is a flow chart of an embodiment of an analysis method for automatically monitoring abnormal signals of a power grid according to the present invention;
FIG. 4 is a schematic structural diagram of an analysis system for automatically monitoring abnormal signals of a power grid provided by the invention;
fig. 5 is a schematic structural diagram of the event matching unit in fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1, it is a schematic main flow diagram of an analysis method for automatically monitoring abnormal signals of a power grid according to the present invention; as shown in fig. 2 to 3. In this embodiment, the method for analyzing the automatic monitoring of the abnormal signal of the power grid includes the following steps:
step S10, receiving an abnormal signal group uploaded in real time by the dispatching automation system from the power distribution station; for example, in one example, the set of abnormal signals acquired to the a substation: forwarding the abnormal signal groups (1 or more signals) uploaded in the dispatching automation system to a dispatching operation management system;
step S11, standardizing each signal in the abnormal signal group, inquiring in a pre-established standardized library to obtain a standardized name corresponding to each signal, and forming a current signal group;
for example, in this embodiment, the obtained abnormal signal group of the a distribution substation may be matched and mapped with the established standardized signal library to form a processed abnormal signal group N, which includes four paraphrase fields, such as a standardized name, a dc screen from the b distribution substation, a device from the b distribution substation, and a direct reason for generation.
Step S12, according to the standardized name of each signal in the current signal group, matching whether the related power grid abnormal event exists in a pre-formed power grid event library; analyzing the abnormal events of the power grid corresponding to the current signal group obtained by matching or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output;
and step S13, displaying the output result on a display interface.
It is understood that, in a specific example, further comprising:
the method comprises the steps of establishing a standardized library of abnormal signals of all power distribution stations in advance, wherein each standardized signal comprises a standardized name, a direct current screen source, an equipment source and a direct generation reason, and paraphrase analysis corresponding to the standardized name at least comprises the contents of the direct current screen source, the equipment source and the direct generation reason.
In the full implementation, the standardized library of the abnormal signals can select a power distribution station (such as an intelligent substation, a non-intelligent typical substation and the like) in a power grid as a standardized signal library analysis object, and perform all signal analysis and carding by taking a standardized name, a direct current screen source, an equipment source and a direct generation reason as a standard signal structure, so as to form the standardized library. Table 1 below shows a structural schematic of a standardized library;
TABLE 1 standardized library Structure Format Table
In a specific example, further comprising:
and pre-establishing a power grid event library of abnormal signals of all the distribution stations, wherein each power grid abnormal event in the power grid event library is associated with at least one standardized signal in the standardization, and power grid abnormal analysis corresponding to each power grid abnormal event is stored.
The grid event garden intersection is a grid event library which takes a signal group as a mapping relation: in the actual operation process of the substation, the existence of a certain equipment abnormality or fault can simultaneously cause a plurality of signals, or when a certain important comprehensive element (such as a bus) trips, a large number of signals can be simultaneously caused. In such a situation, signals which start simultaneously have relevance, so that comprehensive arrangement and induction are required to be carried out by combining the characteristics of power grid equipment, equipment fault cases, equipment jumping cases and the like to form a power grid event library taking signal groups as a mapping relation. Table 2 below shows a structural schematic of a grid event library.
TABLE 2 structural Format Table of the grid event library
It is to be understood that, in a specific example, the step S12 further includes:
step S120, inquiring whether an accurate matching item of the current signal group exists in the power grid event library, and if the accurate matching item of the current signal group exists in the power grid event library, outputting paraphrases corresponding to all standardized names in the current signal group and power grid abnormal event analysis corresponding to the current signal group;
specifically, in this embodiment, it is determined whether the signal group N has an exact match item in the grid event library that uses the standard signal group as a mapping relationship: such as: the signal group N is composed of C, D two signals, and if there is an event definition composed of only C, D two signals in the grid event library, the definition of the corresponding C, D signal and the event analysis corresponding to C + D are directly output.
Step S121, if the query result is that no accurate matching item exists, whether a matching item containing the current signal group exists in the power grid event library is queried, and if the query result is that no matching item containing the current signal group exists, paraphrase analysis corresponding to each standardized name in the current signal group is directly output;
specifically, in this embodiment, if the signal group N does not have an exact matching item in the grid event library, that is, there is no signal group of C + D in the event library, it is determined whether there is a matching item containing the signal group of C + D, such as: and if no signal group containing C + D exists in the power grid event library, directly outputting paraphrase analysis of each signal of the source signal group N, namely paraphrase analysis of the output signal C and paraphrase analysis of the signal D.
Step S122, if the query result is that the matching item containing the current signal group exists, acquiring an additional standardized name except the standardized name contained in the current signal group in each matching item containing the current signal group;
specifically, in the present embodiment, if a signal group including C + D, such as a + C + D, B + C + D, F + C + D, exists in the grid event library, the matching term M (a + C + D, B + C + D, F + C + D) including the signal group N is acquired; an additional standardized name A, B, F is obtained.
Step S123, inquiring whether the additional standardized names exist in the current power distribution station, and if the inquiry result is yes, outputting paraphrase analysis corresponding to each standardized name in the matching items and power grid abnormal event analysis corresponding to the matching items; if the query result is negative, the paraphrase analysis corresponding to each standardized name in the current signal group is directly output.
Specifically, in the present embodiment, it is queried and determined whether a signal (i.e., A, B, F) of an additional standardized name other than C + D among the 3 signal groups of a + C + D, B + C + D, F + C + D exists in the a distribution substation;
if 1 or more signals are present in the A substation, the definition of the corresponding set of signals in the matching term M and the corresponding event analysis are output. If no signal other than C + D (i.e., A, B, F) is present in the signal with the a substation, the paraphrase analysis of each signal of the source signal group N (i.e., the paraphrase analysis of signal C, the paraphrase analysis of signal D) is directly output.
It can be understood that the invention firstly needs to be combined with a signal point table of a power grid transformer substation for combing, and carries out structuring, field formation and paraphrasing on signal names so as to establish a standardized signal library; secondly, combining historical signal processing records and typical event analysis of a dispatching center, and establishing a power grid event library taking a signal group as a mapping relation; and then, the real-time power grid signal group (1 or more signals) uploaded on site is subjected to standardization processing and then is matched with a power grid event library, and finally, the site abnormal problems or events reflected by the current real-time power grid signal group are output.
As shown in fig. 4, which is a schematic structural diagram of an analysis system for automatically monitoring a power grid abnormal signal according to the present invention, and is shown in fig. 5, the system 1 includes:
the receiving unit 10 is used for receiving an abnormal signal group uploaded in real time from the dispatching automation system;
a normalization processing unit 11, configured to perform normalization processing on each signal in the abnormal signal group, perform query in a pre-established normalization library, obtain a normalization name corresponding to each signal, and form a current signal group;
the event matching unit 12 is configured to match whether a related power grid abnormal event exists in a pre-formed power grid event library according to the standardized name of each signal in the current signal group; analyzing the power grid abnormal events corresponding to the current signal group obtained by matching or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output;
the display unit 13 is used for displaying the output result on a display interface;
the standardized library forming unit 14 is configured to pre-establish a standardized library of abnormal signals of all substations, where each standardized signal includes a standardized name, a dc screen source, an equipment source, and a direct generation reason, and the paraphrase analysis corresponding to the standardized name at least includes contents of the dc screen source, the equipment source, and the direct generation reason.
And the power grid event library forming unit 15 is used for establishing a power grid event library of abnormal signals of all the distribution stations in advance, wherein each power grid abnormal event in the power grid event library is associated with at least one standardized signal in the standardization, and power grid abnormal analysis corresponding to each power grid abnormal event is stored.
In a specific example, as shown in fig. 5, the event matching unit 12 further includes:
the first query processing unit 120 is configured to query whether an accurate matching item of the current signal group exists in the grid event library, and if the query result is that the accurate matching item exists, output paraphrases corresponding to standardized names in the current signal group and grid abnormal event analysis corresponding to the current signal group;
the second query processing unit 121 is configured to query whether there is a matching item including the current signal group in the grid event library if the query result obtained by the first query processing unit is that there is no exact matching item, and directly output paraphrase analysis corresponding to each standardized name in the current signal group if the query result is that there is no matching item including the current signal group;
an additional standardized name obtaining unit 122, configured to obtain, when the query result obtained by the second query processing unit is that there is a matching entry containing the current signal group, an additional standardized name excluding the standardized name contained in the current signal group in each matching entry containing the current signal group;
a third query processing unit 123, configured to query whether the additional standardized name exists in the current distribution station, and if the query result is yes, output paraphrase analysis corresponding to each standardized name in the matching item and grid abnormal event analysis corresponding to the matching item; if the query result is negative, the paraphrase analysis corresponding to each standardized name in the current signal group is directly output.
For more details, reference may be made to the foregoing description of fig. 1 to 3, which is not repeated herein.
The embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, a signal point table of a power grid transformer substation is combined for combing, and the signal name is subjected to structuring, field formation and paraphrasing, so that a standardized signal library is established; combining historical signal processing records and typical event analysis of a dispatching center, and establishing a power grid event library taking the signal group as a mapping relation; and then, the real-time power grid signal group (1 or more signals) uploaded on site is subjected to standardization processing and then is matched with a power grid event library, and finally, the site abnormal problems or events reflected by the current real-time power grid signal group are output.
All uploaded abnormal signals can be automatically acquired through an analysis system for automatically monitoring abnormal signals of the power grid, and omission of signal monitoring can be avoided;
meanwhile, by matching and analyzing all the acquired uploaded abnormal signals, the paraphrasing of the real-time signal group and the analysis of the corresponding abnormal events can be automatically completed, the comprehensiveness and the accuracy of the analysis are improved, and therefore a dispatcher can quickly analyze and decide the abnormal signals.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (8)
1. An analysis method for automatically monitoring abnormal signals of a power grid is characterized by comprising the following steps:
step S10, receiving an abnormal signal group uploaded in real time by the dispatching automation system from the power distribution station;
step S11, standardizing each signal in the abnormal signal group, inquiring in a pre-established standardized library to obtain a standardized name corresponding to each signal, and forming a current signal group;
step S12, according to the standardized name of each signal in the current signal group, matching whether the related power grid abnormal event exists in a pre-formed power grid event library; analyzing the power grid abnormal events corresponding to the current signal group obtained by matching or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output;
and step S13, displaying the output result on a display interface.
2. The method of claim 1, wherein the step S12 further comprises:
step S120, inquiring whether an accurate matching item of the current signal group exists in the power grid event library, and if the accurate matching item of the current signal group exists in the power grid event library, outputting paraphrases corresponding to all standardized names in the current signal group and power grid abnormal event analysis corresponding to the current signal group;
step S121, if the query result is that no accurate matching item exists, whether a matching item containing the current signal group exists in the power grid event library is queried, and if the query result is that no matching item containing the current signal group exists, paraphrase analysis corresponding to each standardized name in the current signal group is directly output;
step S122, if the query result is that the matching item containing the current signal group exists, acquiring an additional standardized name except the standardized name contained in the current signal group in each matching item containing the current signal group;
step S123, inquiring whether the additional standardized names exist in the current power distribution station, and if the inquiry result is yes, outputting paraphrase analysis corresponding to each standardized name in the matching items and power grid abnormal event analysis corresponding to the matching items; if the query result is negative, the paraphrase analysis corresponding to each standardized name in the current signal group is directly output.
3. The method of claim 2, further comprising:
the method comprises the steps of establishing a standardized library of abnormal signals of all power distribution stations in advance, wherein each standardized signal comprises a standardized name, a direct current screen source, an equipment source and a direct generation reason, and paraphrase analysis corresponding to the standardized name at least comprises the contents of the direct current screen source, the equipment source and the direct generation reason.
4. The method of claim 3, further comprising:
and pre-establishing a power grid event library of abnormal signals of all the distribution stations, wherein each power grid abnormal event in the power grid event library is associated with at least one standardized signal in the standardization, and power grid abnormal analysis corresponding to each power grid abnormal event is stored.
5. An analysis system for automatically monitoring a power grid abnormal signal is characterized by comprising:
the receiving unit is used for receiving the abnormal signal group uploaded by the dispatching automation system in real time from the power distribution station;
the standardization processing unit is used for carrying out standardization processing on each signal in the abnormal signal group, inquiring in a standardization library established in advance, obtaining a standardization name corresponding to each signal and forming a current signal group;
the event matching unit is used for matching whether the related power grid abnormal event exists in a pre-formed power grid event library according to the standardized name of each signal in the current signal group; analyzing the abnormal events of the power grid corresponding to the current signal group obtained by matching or/and analyzing paraphrases corresponding to the standardized names in the current signal group for output;
and the display unit is used for displaying the output result on a display interface.
6. The system of claim 5, wherein the event matching unit further comprises:
the first query processing unit is used for querying whether an accurate matching item of the current signal group exists in the power grid event library or not, and if the query result is that the accurate matching item exists, outputting paraphrases corresponding to all standardized names in the current signal group and power grid abnormal event analysis corresponding to the current signal group;
the second query processing unit is used for querying whether a matching item containing the current signal group exists in the power grid event library or not when the query result obtained by the first query processing unit is that no accurate matching item exists, and directly outputting paraphrase analysis corresponding to each standardized name in the current signal group if the query result is that no matching item containing the current signal group exists;
an additional standardized name acquisition unit, configured to acquire, when the query result obtained by the second query processing unit is that there is a matching entry that includes the current signal group, an additional standardized name excluding the standardized name included in the current signal group in each matching entry that includes the current signal group;
the third query processing unit is used for querying whether the additional standardized name exists in the current power distribution station, and if the query result is yes, outputting paraphrase analysis corresponding to each standardized name in the matching items and power grid abnormal event analysis corresponding to the matching items; if the query result is negative, the paraphrase analysis corresponding to each standardized name in the current signal group is directly output.
7. The system of claim 6, further comprising:
the standardized library forming unit is used for establishing a standardized library of abnormal signals of all the distribution stations in advance, wherein each standardized signal comprises a standardized name, a direct current screen source, an equipment source and a direct generation reason, and paraphrase analysis corresponding to the standardized name at least comprises the contents of the direct current screen source, the equipment source and the direct generation reason.
8. The system of claim 7, further comprising:
and the power grid event library forming unit is used for establishing a power grid event library of abnormal signals of all the power distribution stations in advance, each power grid abnormal event in the power grid event library is associated with at least one standardized signal in the standardization, and power grid abnormal analysis corresponding to each power grid abnormal event is stored.
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