CN105182127A - Online monitoring method of substation online monitoring system - Google Patents
Online monitoring method of substation online monitoring system Download PDFInfo
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- CN105182127A CN105182127A CN201510569190.3A CN201510569190A CN105182127A CN 105182127 A CN105182127 A CN 105182127A CN 201510569190 A CN201510569190 A CN 201510569190A CN 105182127 A CN105182127 A CN 105182127A
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Abstract
The invention discloses an online monitoring method of a substation online monitoring system. The method comprises the steps of capacitive transformer online monitoring, voltage transformer online monitoring, arrester online monitoring and environment monitoring device online monitoring. The online monitoring system comprises a server end and a substation end. The server end is connected with the substation end through a second level power information network. The server end comprises a real-time/historical database, a server, an interface machine and a state information access gateway machine, wherein the real-time/historical database, the server, the interface machine and the state information access gateway machine are connected through a first level power information network. The substation end comprises a number of substations. Each substation comprises a state information access control machine and a state monitoring device, wherein the state information access control machine and the state monitoring device are connected through a station information network. According to the invention, scope judgment is carried out on common data of a capacitive transformer, a voltage transformer, an arrester and an environment monitoring device; health value diagnosing is carried out; potential faults are diagnosed; and the online monitoring method is safe and reliable.
Description
Technical field
The present invention relates to a kind of on-line monitoring method of Transformer Substation Online Monitoring System.
Background technology
Transformer station, changes the place of voltage.In order to the electric energy that generating plant is sent is transported to place far away, voltage must be raised, become high-tension electricity, on demand voltage be reduced near user again, the work of this buck/boost has come by transformer station.The major equipment of transformer station is switch and transformer.Different by scale, little is called electric substation.Transformer station is greater than electric substation.Electric substation: be generally the step-down substation of electric pressure at below 110KV; Transformer station: " boosting, the step-down " transformer station comprising various electric pressure.Transformer station is voltage of transformation in electric system, acceptance and distribution electric energy, the flow direction of control electric power and the electric power facility of adjustment voltage, and it is got up by the grid contact of its transformer by each step voltage.Transformer station is in specific environment; By AC-DC-AC transfer process.In picture seabed feeder cable and at a distance conveying.Some adopts high voltage direct current power transmission and transformation form.Direct current transportation overcomes the capacitive reactance loss of ac transmission.There is energy saving effect.The major equipment of transformer station and connected mode, variant by its function difference.Therefore, a kind of equipment to transformer station is needed to carry out the method for on-line monitoring.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of on-line monitoring method of Transformer Substation Online Monitoring System is provided.
The object of the invention is to be achieved through the following technical solutions: a kind of on-line monitoring method of Transformer Substation Online Monitoring System, it comprises capacitor mutual-inductor on-line monitoring step, voltage transformer (VT) on-line monitoring step, lightning arrester on-line monitoring step and condition monitoring device on-line monitoring step; Described on-line monitoring system comprises server end and transformer substation end; Server end is connected with transformer substation end by second level Electricity Information Network; Described server end comprise by first order Electricity Information Network be connected to each other real-time/historical data base, server, interface message processor (IMP) and status information Access Network shutdown; Described transformer substation end comprises multiple transformer station, described transformer station comprises by station internal information net interconnective status information Access Control machine and condition monitoring device, and wherein status information Access Control machine directly or be connected with condition monitoring device by state monitoring agent device; Described condition monitoring device comprises capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment;
Described capacitor mutual-inductor on-line monitoring step comprises following sub-step:
S11: status information Access Control machine receives the monitoring variable of capacitor mutual-inductor, comprises leakage current, dielectric loss, electric capacity and three-phase leakage current sum;
S12: the monitoring variable of the capacitor mutual-inductor received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S13: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S14: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise capacitor mutual-inductor Threshold Analysis sub-step and capacitor mutual-inductor health degree judges sub-step, described capacitor mutual-inductor Threshold Analysis sub-step comprises following sub-step: judge whether any one in leakage current, dielectric loss, electric capacity and three-phase leakage current sum exceedes setting range, if exceed, produces warning information;
Described capacitor mutual-inductor health degree judges the following sub-step of sub-step:
S141: set up the monitoring variable of capacitor mutual-inductor and the system of time correlation;
S142: automatically form the time series of leakage current, dielectric loss, electric capacity and three-phase leakage current sum respectively according to the data of in real time/historical data base after the certain hour set;
S143: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S144: respectively the eigenwert of leakage current, dielectric loss, electric capacity and three-phase leakage current sum is weighted on average according to certain weight, is formed in the first dimensionless group between 0 to 1;
S145: represent the health value of capacitor mutual-inductor with (1-first dimensionless group) * 100, when the health value of capacitor mutual-inductor is less than the capacitor mutual-inductor health value threshold value of setting, produces warning information;
Described voltage transformer (VT) on-line monitoring step comprises following sub-step:
S21: status information Access Control machine receives the monitoring variable of voltage transformer (VT), comprises the difference of secondary side voltage, three-phase voltage sum, in the same way voltage;
S22: the monitoring variable of the voltage transformer (VT) received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S23: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S24: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise voltage transformer (VT) Threshold Analysis sub-step and voltage transformer (VT) health degree judges sub-step, described voltage transformer (VT) Threshold Analysis sub-step comprises following sub-step: judge whether any one in the difference of secondary side voltage, three-phase voltage sum, in the same way voltage exceedes setting range, if exceed, produces warning information;
Described voltage transformer (VT) health degree judges the following sub-step of sub-step:
S241: set up the monitoring variable of voltage transformer (VT) and the system of time correlation;
S242: the time series of difference automatically forming secondary side voltage, three-phase voltage sum, in the same way voltage after the certain hour set according to the data of in real time/historical data base respectively;
S243: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S244: the eigenwert of the difference of secondary side voltage, three-phase voltage sum, in the same way voltage be weighted on average according to certain weight respectively, is formed in the second dimensionless group between 0 to 1;
S245: by the health value of (1-second dimensionless group) * 100 representative voltage mutual inductors, when the health value of voltage transformer (VT) is less than the voltage transformer (VT) health value threshold value of setting, produces warning information;
Described lightning arrester on-line monitoring step comprises following sub-step:
S31: status information Access Control machine receives the monitoring variable of lightning arrester, comprises leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency;
S32: the monitoring variable of the lightning arrester received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S33: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S34: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise lightning arrester Threshold Analysis sub-step and lightning arrester health degree judges sub-step, described lightning arrester Threshold Analysis sub-step comprises following sub-step: judge whether any one in leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency exceedes setting range, if exceed, produces warning information;
Described lightning arrester health degree judges the following sub-step of sub-step:
S341: set up the monitoring variable of lightning arrester and the system of time correlation;
S342: the time series automatically forming leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency after the certain hour set according to the data of in real time/historical data base respectively;
S343: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S344: respectively the eigenwert of leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency is weighted on average according to certain weight, is formed in the 3rd dimensionless group between 0 to 1;
S345: represent the health value of lightning arrester with (1-the 3rd dimensionless group) * 100, when the health value of lightning arrester is less than the lightning arrester health value threshold value of setting, produces warning information.
Described enviromental monitoring equipment on-line monitoring step comprises following sub-step:
S41: status information Access Control machine receives the monitoring variable of enviromental monitoring equipment, comprises temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and leakage current;
S42: the monitoring variable of the enviromental monitoring equipment received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S43: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S44: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise enviromental monitoring equipment Threshold Analysis sub-step and enviromental monitoring equipment health degree judges sub-step, described enviromental monitoring equipment Threshold Analysis sub-step comprises following sub-step: judge temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, whether any one in maximum leakage electric current and leakage current exceedes setting range, if exceed, produce warning information,
Described enviromental monitoring equipment health degree judges the following sub-step of sub-step:
S441: set up the monitoring variable of enviromental monitoring equipment and the system of time correlation;
S442: automatically according to the time series of data difference formation temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and the leakage current of in real time/historical data base after the certain hour set;
S443: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S444: the eigenwert of temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and leakage current be weighted on average according to certain weight respectively, is formed in the 4th dimensionless group between 0 to 1;
S445: the health value of the situation that controls environment with (1-the 4th dimensionless group) * 100 representative, when the health value of the situation of controling environment is less than the enviromental monitoring equipment health value threshold value of setting, produces warning information.
At least one firewall box is provided with between described first order Electricity Information Network and second level Electricity Information Network.
Described state monitoring agent device is connected with multiple condition monitoring device by multiport transponder; 103/104 communication protocol is adopted between multiport transponder and condition monitoring device.
I2 interface protocol is adopted between described second level Electricity Information Network and station internal information net; DL/T860 stipulations are adopted between status information Access Control machine and state monitoring agent device; DL/T860 stipulations are adopted between status information Access Control machine and condition monitoring device; I2 interface protocol is adopted between interface message processor (IMP) and the shutdown of status information Access Network.
The invention has the beneficial effects as follows: the present invention carries out on-line monitoring to capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment conventional in transformer station, is delivered to the status information Access Control machine of server end by the Data Concurrent of the status information Access Control machine acquisition state monitoring equipment being arranged at transformer substation end.Server not only carries out scope judgement to the frequently-used data of capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment, also by carrying out the diagnosis of health value to the frequently-used data of capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment, carry out diagnosing the incipient fault of capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the inventive method process flow diagram;
Fig. 2 is block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail: as shown in Figure 1, an on-line monitoring method for Transformer Substation Online Monitoring System, it comprises capacitor mutual-inductor on-line monitoring step, voltage transformer (VT) on-line monitoring step, lightning arrester on-line monitoring step and enviromental monitoring equipment on-line monitoring step; As shown in Figure 2, described on-line monitoring system comprises server end and transformer substation end; Server end is connected with transformer substation end by second level Electricity Information Network; Described server end comprise by first order Electricity Information Network be connected to each other real-time/historical data base, server, interface message processor (IMP) and status information Access Network shutdown; Described transformer substation end comprises multiple transformer station, described transformer station comprises by station internal information net interconnective status information Access Control machine and condition monitoring device, and wherein status information Access Control machine directly or be connected with condition monitoring device by state monitoring agent device; Described condition monitoring device comprises capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment; ;
Described capacitor mutual-inductor on-line monitoring step comprises following sub-step:
S11: status information Access Control machine receives the monitoring variable of capacitor mutual-inductor, comprises leakage current, dielectric loss, electric capacity and three-phase leakage current sum;
S12: the monitoring variable of the capacitor mutual-inductor received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S13: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S14: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise capacitor mutual-inductor Threshold Analysis sub-step and capacitor mutual-inductor health degree judges sub-step, described capacitor mutual-inductor Threshold Analysis sub-step comprises following sub-step: judge whether any one in leakage current, dielectric loss, electric capacity and three-phase leakage current sum exceedes setting range, if exceed, produces warning information;
Described capacitor mutual-inductor health degree judges the following sub-step of sub-step:
S141: set up the monitoring variable of capacitor mutual-inductor and the system of time correlation;
S142: automatically form the time series of leakage current, dielectric loss, electric capacity and three-phase leakage current sum respectively according to the data of in real time/historical data base after the certain hour set;
S143: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S144: respectively the eigenwert of leakage current, dielectric loss, electric capacity and three-phase leakage current sum is weighted on average according to certain weight, be formed in the first dimensionless group between 0 to 1, the first dimensionless group represents the degree of capacitor mutual-inductor hydraulic performance decline;
Close to 100, S145: the health value representing capacitor mutual-inductor with (1-first dimensionless group) * 100, more represents that health degree is better, more represent that health status is poorer close to 0 on the contrary; When the health value of capacitor mutual-inductor is less than the capacitor mutual-inductor health value threshold value of setting, produce warning information;
Described voltage transformer (VT) on-line monitoring step comprises following sub-step:
S21: status information Access Control machine receives the monitoring variable of voltage transformer (VT), comprises the difference of secondary side voltage, three-phase voltage sum, in the same way voltage;
S22: the monitoring variable of the voltage transformer (VT) received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S23: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S24: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise voltage transformer (VT) Threshold Analysis sub-step and voltage transformer (VT) health degree judges sub-step, described voltage transformer (VT) Threshold Analysis sub-step comprises following sub-step: judge whether any one in the difference of secondary side voltage, three-phase voltage sum, in the same way voltage exceedes setting range, if exceed, produces warning information;
Described voltage transformer (VT) health degree judges the following sub-step of sub-step:
S241: set up the monitoring variable of voltage transformer (VT) and the system of time correlation;
S242: the time series of difference automatically forming secondary side voltage, three-phase voltage sum, in the same way voltage after the certain hour set according to the data of in real time/historical data base respectively;
S243: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S244: respectively the eigenwert of the difference of secondary side voltage, three-phase voltage sum, in the same way voltage is weighted on average according to certain weight, be formed in the second dimensionless group between 0 to 1, the second dimensionless group represents the degree of voltage transformer (VT) hydraulic performance decline;
S245: by the health value of (1-second dimensionless group) * 100 representative voltage mutual inductors, more represent that health degree is better close to 100, contrary more represent that health status is poorer close to 0, when the health value of voltage transformer (VT) is less than the voltage transformer (VT) health value threshold value of setting, produce warning information;
Described lightning arrester on-line monitoring step comprises following sub-step:
S31: status information Access Control machine receives the monitoring variable of lightning arrester, comprises leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency;
S32: the monitoring variable of the lightning arrester received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S33: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S34: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise lightning arrester Threshold Analysis sub-step and lightning arrester health degree judges sub-step, described lightning arrester Threshold Analysis sub-step comprises following sub-step: judge whether any one in leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency exceedes setting range, if exceed, produces warning information;
Described lightning arrester health degree judges the following sub-step of sub-step:
S341: set up the monitoring variable of lightning arrester and the system of time correlation;
S342: the time series automatically forming leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency after the certain hour set according to the data of in real time/historical data base respectively;
S343: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S344: respectively the eigenwert of leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency is weighted on average according to certain weight, be formed in the 3rd dimensionless group between 0 to 1, the 3rd dimensionless group represents the degree of lightning arrester hydraulic performance decline;
S345: the health value representing lightning arrester with (1-the 3rd dimensionless group) * 100, more represent that health degree is better close to 100, contrary more represent that health status is poorer close to 0, when the health value of lightning arrester is less than the lightning arrester health value threshold value of setting, produce warning information.
Described enviromental monitoring equipment on-line monitoring step comprises following sub-step:
S41: status information Access Control machine receives the monitoring variable of enviromental monitoring equipment, comprises temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and leakage current;
S42: the monitoring variable of the enviromental monitoring equipment received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S43: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S44: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise enviromental monitoring equipment Threshold Analysis sub-step and enviromental monitoring equipment health degree judges sub-step, described enviromental monitoring equipment Threshold Analysis sub-step comprises following sub-step: judge temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, whether any one in maximum leakage electric current and leakage current exceedes setting range, if exceed, produce warning information,
Described enviromental monitoring equipment health degree judges the following sub-step of sub-step:
S441: set up the monitoring variable of enviromental monitoring equipment and the system of time correlation;
S442: automatically according to the time series of data difference formation temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and the leakage current of in real time/historical data base after the certain hour set;
S443: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S444: the eigenwert of temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and leakage current be weighted on average according to certain weight respectively, is formed in the 4th dimensionless group between 0 to 1;
S445: the health value of the situation that controls environment with (1-the 4th dimensionless group) * 100 representative, when the health value of the situation of controling environment is less than the enviromental monitoring equipment health value threshold value of setting, produces warning information.
At least one firewall box is provided with between described first order Electricity Information Network and second level Electricity Information Network.
Described state monitoring agent device is connected with multiple condition monitoring device by multiport transponder; 103/104 communication protocol is adopted between multiport transponder and condition monitoring device.
I2 interface protocol is adopted between described second level Electricity Information Network and station internal information net; DL/T860 stipulations are adopted between status information Access Control machine and state monitoring agent device; DL/T860 stipulations are adopted between status information Access Control machine and condition monitoring device; I2 interface protocol is adopted between interface message processor (IMP) and the shutdown of status information Access Network.
Claims (4)
1. an on-line monitoring method for Transformer Substation Online Monitoring System, is characterized in that: it comprises capacitor mutual-inductor on-line monitoring step, voltage transformer (VT) on-line monitoring step, lightning arrester on-line monitoring step and enviromental monitoring equipment on-line monitoring step; Described on-line monitoring system comprises server end and transformer substation end; Server end is connected with transformer substation end by second level Electricity Information Network; Described server end comprise by first order Electricity Information Network be connected to each other real-time/historical data base, server, interface message processor (IMP) and status information Access Network shutdown; Described transformer substation end comprises multiple transformer station, described transformer station comprises by station internal information net interconnective status information Access Control machine and condition monitoring device, and wherein status information Access Control machine directly or be connected with condition monitoring device by state monitoring agent device; Described condition monitoring device comprises capacitor mutual-inductor, voltage transformer (VT), lightning arrester and enviromental monitoring equipment;
Described capacitor mutual-inductor on-line monitoring step comprises following sub-step:
S11: status information Access Control machine receives the monitoring variable of capacitor mutual-inductor, comprises leakage current, dielectric loss, electric capacity and three-phase leakage current sum;
S12: the monitoring variable of the capacitor mutual-inductor received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S13: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S14: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise capacitor mutual-inductor Threshold Analysis sub-step and capacitor mutual-inductor health degree judges sub-step, described capacitor mutual-inductor Threshold Analysis sub-step comprises following sub-step: judge whether any one in leakage current, dielectric loss, electric capacity and three-phase leakage current sum exceedes setting range, if exceed, produces warning information;
Described capacitor mutual-inductor health degree judges the following sub-step of sub-step:
S141: set up the monitoring variable of capacitor mutual-inductor and the system of time correlation;
S142: automatically form the time series of leakage current, dielectric loss, electric capacity and three-phase leakage current sum respectively according to the data of in real time/historical data base after the certain hour set;
S143: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S144: respectively the eigenwert of leakage current, dielectric loss, electric capacity and three-phase leakage current sum is weighted on average according to certain weight, is formed in the first dimensionless group between 0 to 1;
S145: represent the health value of capacitor mutual-inductor with (1-first dimensionless group) * 100, when the health value of capacitor mutual-inductor is less than the capacitor mutual-inductor health value threshold value of setting, produces warning information;
Described voltage transformer (VT) on-line monitoring step comprises following sub-step:
S21: status information Access Control machine receives the monitoring variable of voltage transformer (VT), comprises the difference of secondary side voltage, three-phase voltage sum, in the same way voltage;
S22: the monitoring variable of the voltage transformer (VT) received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S23: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S24: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise voltage transformer (VT) Threshold Analysis sub-step and voltage transformer (VT) health degree judges sub-step, described voltage transformer (VT) Threshold Analysis sub-step comprises following sub-step: judge whether any one in the difference of secondary side voltage, three-phase voltage sum, in the same way voltage exceedes setting range, if exceed, produces warning information;
Described voltage transformer (VT) health degree judges the following sub-step of sub-step:
S241: set up the monitoring variable of voltage transformer (VT) and the system of time correlation;
S242: the time series of difference automatically forming secondary side voltage, three-phase voltage sum, in the same way voltage after the certain hour set according to the data of in real time/historical data base respectively;
S243: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S244: the eigenwert of the difference of secondary side voltage, three-phase voltage sum, in the same way voltage be weighted on average according to certain weight respectively, is formed in the second dimensionless group between 0 to 1;
S245: by the health value of (1-second dimensionless group) * 100 representative voltage mutual inductors, when the health value of voltage transformer (VT) is less than the voltage transformer (VT) health value threshold value of setting, produces warning information;
Described lightning arrester on-line monitoring step comprises following sub-step:
S31: status information Access Control machine receives the monitoring variable of lightning arrester, comprises leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency;
S32: the monitoring variable of the lightning arrester received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S33: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S34: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise lightning arrester Threshold Analysis sub-step and lightning arrester health degree judges sub-step, described lightning arrester Threshold Analysis sub-step comprises following sub-step: judge whether any one in leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency exceedes setting range, if exceed, produces warning information;
Described lightning arrester health degree judges the following sub-step of sub-step:
S341: set up the monitoring variable of lightning arrester and the system of time correlation;
S342: the time series automatically forming leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency after the certain hour set according to the data of in real time/historical data base respectively;
S343: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S344: respectively the eigenwert of leakage current, current in resistance property, capacitance-resistance ratio, thunderbolt time and action frequency is weighted on average according to certain weight, is formed in the 3rd dimensionless group between 0 to 1;
S345: represent the health value of lightning arrester with (1-the 3rd dimensionless group) * 100, when the health value of lightning arrester is less than the lightning arrester health value threshold value of setting, produces warning information;
Described enviromental monitoring equipment on-line monitoring step comprises following sub-step:
S41: status information Access Control machine receives the monitoring variable of enviromental monitoring equipment, comprises temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and leakage current;
S42: the monitoring variable of the enviromental monitoring equipment received is sent to the shutdown of status information Access Network by station internal information net, second level Electricity Information Network, first order Electricity Information Network by status information Access Control machine successively;
S43: the shutdown of status information Access Network forwards the data to interface message processor (IMP);
S44: interface message processor (IMP) sends data in real time/historical data base preservation, server is analyzed in real time/historical data simultaneously, comprise enviromental monitoring equipment Threshold Analysis sub-step and enviromental monitoring equipment health degree judges sub-step, described enviromental monitoring equipment Threshold Analysis sub-step comprises following sub-step: judge temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, whether any one in maximum leakage electric current and leakage current exceedes setting range, if exceed, produce warning information,
Described enviromental monitoring equipment health degree judges the following sub-step of sub-step:
S441: set up the monitoring variable of enviromental monitoring equipment and the system of time correlation;
S442: automatically according to the time series of data difference formation temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and the leakage current of in real time/historical data base after the certain hour set;
S443: by all time series fitting a straight lines, is normalized slope by the slope of digital simulation straight line, forms the value between-1 to 1, and as eigenwert;
S444: the eigenwert of temperature, humidity, accumulator float charge voltage, accumulator even charging voltage, single battery voltage, accumulator internal resistance, equivalent salt density, average leakage current, maximum leakage electric current and leakage current be weighted on average according to certain weight respectively, is formed in the 4th dimensional parameters between 0 to 1;
S445: the health value of the situation that controls environment with (1-the 4th dimensionless group) * 100 representative, when the health value of the situation of controling environment is less than the enviromental monitoring equipment health value threshold value of setting, produces warning information.
2. the on-line monitoring method of a kind of Transformer Substation Online Monitoring System according to claim 1, is characterized in that: be provided with at least one firewall box between described first order Electricity Information Network and second level Electricity Information Network.
3. the on-line monitoring method of a kind of Transformer Substation Online Monitoring System according to claim 1, is characterized in that: described state monitoring agent device is connected with multiple condition monitoring device by multiport transponder; 103/104 communication protocol is adopted between multiport transponder and condition monitoring device.
4. the on-line monitoring method of a kind of Transformer Substation Online Monitoring System according to claim 1, is characterized in that: adopt I2 interface protocol between described second level Electricity Information Network and station internal information net; DL/T860 stipulations are adopted between status information Access Control machine and state monitoring agent device; DL/T860 stipulations are adopted between status information Access Control machine and condition monitoring device; I2 interface protocol is adopted between interface message processor (IMP) and the shutdown of status information Access Network.
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