CN117007890A - Substation secondary circuit detection method, system, equipment and medium - Google Patents
Substation secondary circuit detection method, system, equipment and medium Download PDFInfo
- Publication number
- CN117007890A CN117007890A CN202310996288.1A CN202310996288A CN117007890A CN 117007890 A CN117007890 A CN 117007890A CN 202310996288 A CN202310996288 A CN 202310996288A CN 117007890 A CN117007890 A CN 117007890A
- Authority
- CN
- China
- Prior art keywords
- data
- detection
- circuit
- simulation model
- early warning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 212
- 238000004088 simulation Methods 0.000 claims abstract description 82
- 238000006243 chemical reaction Methods 0.000 claims abstract description 77
- 230000005684 electric field Effects 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 11
- 230000009191 jumping Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 23
- 238000004891 communication Methods 0.000 description 33
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000000819 phase cycle Methods 0.000 description 3
- 230000002633 protecting effect Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a method, a system, equipment and a medium for detecting a secondary circuit of a transformer substation. Initial detection data of the secondary circuit are collected through an electric field sensor. And carrying out data adjustment and conversion on the initial detection data to generate target detection data. And comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data. And comparing the target detection data early warning threshold value by the early warning control processor to generate second comparison data. And performing early warning operation based on the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop. The detection data is subjected to data processing, and multiple detection judgment is performed through the simulation model and the preset control processor, so that the accuracy of the detection result is high.
Description
Technical Field
The invention relates to the technical field of substations, in particular to a method, a system, equipment and a medium for detecting a secondary circuit of a substation.
Background
The electrical equipment of the power system is divided into primary equipment and secondary equipment. An electrical circuit for generating, transmitting, distributing or otherwise producing electricity is formed by primary devices interconnected, and is called a primary circuit or primary connection. The secondary devices are connected with each other to form an electric loop for monitoring, controlling, regulating and protecting the primary devices, which is called a secondary loop. The secondary loop comprises control, regulation, relay protection and automatic devices, measurement and signal loops, an operation power supply system and the like of primary equipment of a transformer substation and a substation.
The normal stable operation of transformer substation is not separated from the stable reliable operation of each components and parts in the secondary circuit, consequently fortune dimension personnel need often detect the secondary circuit, and current transformer substation secondary circuit detects needs the manual work to detect, wastes time and energy, appears detecting omission easily, leads to the testing result degree of accuracy low.
Disclosure of Invention
The invention provides a method, a system, equipment and a medium for detecting a secondary circuit of a transformer substation, which solve the technical problems that the detection of the existing secondary circuit of the transformer substation needs manual detection, wastes time and labor, is easy to occur detection omission, and causes low accuracy of detection results.
The invention provides a transformer substation secondary circuit detection method, which is applied to a circuit detection device, wherein the circuit detection device comprises an electric field sensor and an early warning control processor, and the method comprises the following steps:
obtaining arrangement data of a secondary circuit, and constructing a simulation model corresponding to the secondary circuit according to the arrangement data and a preset threshold;
acquiring initial detection data of the secondary circuit through the electric field sensor;
performing data adjustment and conversion on the initial detection data to generate target detection data;
comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data;
comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data;
and performing early warning operation according to the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop.
Optionally, the preset threshold includes first height data, second height data, third height data, fourth height data, first pitch data, second pitch data, third pitch data, and fourth pitch data; the step of constructing a simulation model corresponding to the secondary loop by combining the arrangement data with a preset threshold value comprises the following steps:
Constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis;
if the arrangement data are horizontally arranged, a first simulation model is built by combining the first height data and the first interval data with the plane coordinate system;
if the arrangement data are arranged in a triangular mode, a second simulation model is built by combining the second height data and the second interval data with the plane coordinate system;
if the arrangement data are arranged in a same-tower double-loop way, a third simulation model is built by combining the third height data and the third interval data with the plane coordinate system;
and if the arrangement data are arranged in four loops in the same tower, adopting the fourth height data and the fourth interval data to combine with the plane coordinate system to construct a fourth simulation model.
Optionally, the loop detection device comprises a voltage dividing and following circuit and a data conversion circuit; the step of performing data adjustment and conversion on the initial detection data to generate target detection data comprises the following steps:
reducing voltage signals in the initial detection data according to a preset voltage dividing ratio through the voltage dividing and voltage following circuit to generate intermediate detection data;
And performing data conversion on the intermediate detection data through the data conversion circuit to generate target detection data.
Optionally, the data conversion circuit comprises a filter circuit, a rectifying circuit and an analog-to-digital conversion circuit; the step of generating target detection data by performing data conversion on the intermediate detection data by the data conversion circuit includes:
filtering the intermediate detection data by the filter circuit through a second-order active band-pass filter to generate first conversion data;
converting the first conversion data from bipolar to unipolar through the rectification circuit to generate second conversion data;
converting the second conversion data into a digital signal through the analog-to-digital conversion circuit to generate third conversion data;
and taking the third conversion data as target detection data.
Optionally, the step of generating the detection report corresponding to the secondary loop by performing early warning operation according to the first comparison data and the second comparison data includes:
judging whether the first comparison data and the second comparison data are identical or not;
if yes, performing early warning operation according to the operation data corresponding to the early warning threshold value, and generating early warning operation data;
Constructing a detection report corresponding to the secondary loop by adopting the early warning operation data, the first comparison data and the second comparison data;
if not, the step of collecting the initial detection data of the secondary loop through the electric field sensor is carried out in a jumping mode.
The invention also provides a secondary circuit detection system of the transformer substation, which is applied to a circuit detection device, wherein the circuit detection device comprises an electric field sensor and an early warning control processor, and the system comprises:
the simulation model construction module is used for acquiring arrangement data of the secondary circuit and constructing a simulation model corresponding to the secondary circuit according to the arrangement data combined with a preset threshold value;
the initial detection data acquisition module is used for acquiring initial detection data of the secondary loop through the electric field sensor;
the target detection data generation module is used for carrying out data adjustment and conversion on the initial detection data to generate target detection data;
the first comparison data generation module is used for comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data;
the second comparison data generation module is used for comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data;
And the detection report generation module is used for carrying out early warning operation according to the first comparison data and the second comparison data and generating a detection report corresponding to the secondary loop.
Optionally, the preset threshold includes first height data, second height data, third height data, fourth height data, first pitch data, second pitch data, third pitch data, and fourth pitch data; the simulation model construction module comprises:
the plane coordinate system construction module is used for constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis;
the first simulation model construction module is used for constructing a first simulation model by combining the first height data and the first interval data with the plane coordinate system if the arrangement data are horizontally arranged;
the second simulation model construction module is used for constructing a second simulation model by combining the second height data and the second interval data with the plane coordinate system if the arrangement data are arranged in a triangular mode;
the third simulation model construction module is used for constructing a third simulation model by adopting the third height data and the third interval data to combine the plane coordinate system if the arrangement data are arranged in a same-tower double-loop way;
And the fourth simulation model construction module is used for constructing a fourth simulation model by adopting the fourth height data and the fourth interval data to combine the plane coordinate system if the arrangement data are arranged in the same tower in four rounds.
Optionally, the loop detection device comprises a voltage dividing and following circuit and a data conversion circuit; the target detection data generation module includes:
the intermediate detection data generation module is used for reducing voltage signals in the initial detection data according to a preset voltage division ratio through the voltage division and voltage follower circuit to generate intermediate detection data;
and the target detection data generation sub-module is used for carrying out data conversion on the intermediate detection data through the data conversion circuit to generate target detection data.
The invention also provides electronic equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program, when executed by the processor, causes the processor to execute the steps of the transformer substation secondary circuit detection method for realizing any flexible interconnection switch.
The invention also provides a computer readable storage medium having stored thereon a computer program which when executed implements a substation secondary circuit detection method of any of the flexible interconnection switches described above.
From the above technical scheme, the invention has the following advantages:
according to the invention, the arrangement data of the secondary circuit is obtained, and a simulation model corresponding to the secondary circuit is constructed according to the arrangement data and the preset threshold value. Initial detection data of the secondary circuit are collected through an electric field sensor. And carrying out data adjustment and conversion on the initial detection data to generate target detection data. And comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data. And comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data. And performing early warning operation based on the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop. The technical problems that detection is needed to be manually carried out in the existing secondary circuit detection of the transformer substation, time and labor are wasted, detection omission occurs easily, and the accuracy of a detection result is low are solved. The detection data is subjected to data processing, and multiple detection judgment is performed through the simulation model and the preset control processor, so that the accuracy of the detection result is high.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a step flowchart of a method for detecting a secondary circuit of a transformer substation according to a first embodiment of the present invention;
fig. 2 is a block diagram of a loop detection device according to a first embodiment of the present invention;
fig. 3 is a step flowchart of a secondary circuit detection method of a transformer substation provided in a second embodiment of the present invention;
FIG. 4 is a diagram showing a secondary circuit according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram showing a secondary circuit with triangular arrangement according to a second embodiment of the present invention;
FIG. 6 is a diagram showing a second circuit of the second embodiment of the present invention with the same phase sequence as the double-circuit phase sequence of the first tower;
FIG. 7 is a diagram showing a secondary circuit according to a second embodiment of the present invention, in which the phase sequences of the two circuits of the same tower are not arranged;
FIG. 8 is a diagram showing an arrangement of four horizontal columns in the same column for a secondary circuit according to a second embodiment of the present invention;
FIG. 9 is a schematic diagram showing an arrangement of four vertical columns in the same column in a secondary circuit according to a second embodiment of the present invention;
fig. 10 is a block diagram of a secondary circuit detection system of a transformer substation according to a third embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method, a system, equipment and a medium for detecting a secondary circuit of a transformer substation, which are used for solving the technical problems that the detection of the existing secondary circuit of the transformer substation needs manual detection, wastes time and labor, is easy to cause detection omission and causes low accuracy of detection results.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a method for detecting a secondary circuit of a transformer substation according to a first embodiment of the present invention.
As shown in fig. 2, the loop detection device includes a front acquisition end, a rear early warning end, a communication module and a central processing unit, and the front acquisition end, the rear early warning end and the central processing unit are connected through the communication module. The front acquisition end comprises an electric field sensor, namely a plate capacitive electric field sensor, a signal processing module and a first main control processor. The rear early warning end comprises a second main controller, namely an early warning control processor, an operation indicator light and an audible and visual alarm module. The communication module comprises a first wireless communication module, a second wireless communication module and a third wireless communication module. The front acquisition end and the rear early warning end are both provided with a battery electric quantity monitoring unit and a power supply module, and the power supply module comprises an external power supply and a lithium battery module. The power supply of different modules is different, and in consideration of the power output quality, conversion efficiency, design steps and field measurement requirements of the device of the power supply module, a 12V chargeable and dischargeable lithium battery is selected as the power supply module, and the lithium battery power supply module can realize different voltage requirements inside the device through a voltage stabilizing chip.
The first wireless communication module, the second wireless communication module and the third wireless communication module are respectively arranged in the front acquisition end, the rear early warning end and the central processing unit. The electric field sensor is connected with the input end of the signal processing module, the output port of the signal processing module is connected with the input port of the first main control processor, the output port of the first main control processor is connected with the input port of the first wireless communication module, the input port of the second main control processor is connected with the output port of the second wireless communication module, and the output end of the second main control processor is connected with the audible and visual alarm module and the running indicator lamp. The wireless communication is commonly infrared communication, bluetooth communication, WIFI communication and radio frequency communication; the infrared communication is wireless communication in a linear mode, and a point-to-point communication mode is adopted; bluetooth communication has the characteristic of short communication distance, but has high price and low anti-interference capability, and adopts a point-to-point communication mode; the WIFI wireless communication cost is high, the implementation mode is complex, and the advantages are low in the aspect of convenient use; the radio frequency wireless communication has the characteristics of long communication distance, quick and convenient networking mode, low power consumption and the like, so that the first wireless communication module, the second wireless communication module and the third wireless communication module all adopt the radio frequency wireless communication module to carry out wireless communication.
The first main control processor and the second main control processor are respectively STM32F103C8T6 processors which are commonly used, multiple in functions, simple and quick to use and low in cost, and the processors have the advantages of high performance, low cost and low power consumption.
The electric field sensor is used for detecting electric fields of the power transmission lines in different arrangement modes, the signal processing module is used for converting electric field signals detected by the electric field sensor into digital signals which can be identified by the first main control processor, and the central processing unit is used for bringing the received digital signals into the simulation model and comparing the received digital signals with the set early warning threshold.
The first embodiment of the invention provides a method for detecting a secondary circuit of a transformer substation, which comprises the following steps:
and 101, acquiring arrangement data of a secondary circuit, and constructing a simulation model corresponding to the secondary circuit according to the arrangement data and a preset threshold value.
In the embodiment of the invention, the arrangement data of the secondary circuit is acquired, and a corresponding simulation model is constructed through the arrangement mode corresponding to the secondary circuit. And constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis. If the arrangement data are horizontally arranged, a first simulation model is constructed by combining the first height data and the first interval data with a plane coordinate system. If the arrangement data are arranged in a triangular mode, a second simulation model is built by combining the second height data and the second interval data with a plane coordinate system. If the arrangement data are arranged in a same-tower double-loop way, a third simulation model is constructed by combining third height data and third interval data with a plane coordinate system. If the arrangement data are arranged in four times of the same tower, a fourth simulation model is constructed by combining the fourth height data and the fourth interval data with a plane coordinate system.
And 102, acquiring initial detection data of a secondary circuit through an electric field sensor.
In the embodiment of the invention, the electric field sensor is a plate capacitive electric field sensor. And acquiring data such as voltage signals of a secondary circuit by adopting a flat capacitive electric field sensor, and generating initial detection data. The layout positions of the flat capacitive electric field sensors can be respectively provided with the flat capacitive electric field sensors at a plurality of positions for detection based on the arrangement mode of the secondary circuit, so that the acquired data is more comprehensive.
And 103, carrying out data adjustment and conversion on the initial detection data to generate target detection data.
In the embodiment of the invention, the signal processing module comprises a voltage dividing and following circuit and a data conversion circuit, and the data conversion circuit comprises a filter circuit, a rectifying circuit and an analog-to-digital conversion circuit. And reducing a voltage signal in the initial detection data according to a preset voltage division ratio by a voltage division and voltage following circuit to generate intermediate detection data. And performing data conversion on the intermediate detection data through a data conversion circuit to generate target detection data.
And 104, comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data.
In the embodiment of the invention, the central processing unit compares the target detection data with the early warning threshold corresponding to the simulation model, and preliminarily judges whether the secondary circuit is abnormal or not to obtain first comparison data.
And 105, comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data.
In the embodiment of the invention, the target detection data and the early warning threshold value are compared again by the early warning control processor, so that whether the secondary loop is abnormal or not is further verified, and second comparison data are generated.
And 106, performing early warning operation according to the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop.
In the embodiment of the invention, whether the first comparison data and the second comparison data are identical or not is judged. If yes, performing early warning operation according to the operation data corresponding to the early warning threshold value, and generating early warning operation data. And constructing a detection report corresponding to the secondary loop by adopting the early warning operation data, the first comparison data and the second comparison data. If not, the step of collecting initial detection data of the secondary circuit through the electric field sensor is carried out in a jumping mode.
In the embodiment of the invention, the arrangement data of the secondary circuit is acquired, and a simulation model corresponding to the secondary circuit is constructed according to the arrangement data and a preset threshold value. Initial detection data of the secondary circuit are collected through an electric field sensor. And carrying out data adjustment and conversion on the initial detection data to generate target detection data. And comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data. And comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data. And performing early warning operation based on the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop. The technical problems that detection is needed to be manually carried out in the existing secondary circuit detection of the transformer substation, time and labor are wasted, detection omission occurs easily, and the accuracy of a detection result is low are solved. The detection data is subjected to data processing, and multiple detection judgment is performed through the simulation model and the preset control processor, so that the accuracy of the detection result is high.
Referring to fig. 3, fig. 3 is a flowchart illustrating steps of a secondary circuit detection method for a transformer substation according to a second embodiment of the present invention.
The second detection method for the secondary circuit of the transformer substation provided by the embodiment of the invention comprises the following steps:
step 301, obtaining arrangement data of the secondary circuit, and constructing a simulation model corresponding to the secondary circuit according to the arrangement data and a preset threshold.
Further, the preset threshold includes first height data, second height data, third height data, fourth height data, first pitch data, second pitch data, third pitch data, and fourth pitch data, and step 301 may include the following substeps S11-S15:
s11, constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and taking the ground as a horizontal axis.
And S12, if the arrangement data are horizontally arranged, constructing a first simulation model by combining the first height data and the first interval data with a plane coordinate system.
And S13, if the arrangement data are arranged in a triangular mode, a second simulation model is constructed by combining the second height data and the second interval data with a plane coordinate system.
And S14, if the arrangement data are arranged in a same-tower double-loop way, a third simulation model is constructed by combining third height data and third interval data with a plane coordinate system.
And S15, if the arrangement data are arranged in four turns of the same tower, a fourth simulation model is constructed by combining the fourth height data and the fourth interval data with a plane coordinate system.
In the embodiment of the invention, corresponding simulation models are set according to the arrangement mode of the secondary circuit, and each simulation model is provided with a corresponding early warning threshold value. And constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis. As shown in fig. 4, when the arrangement data corresponding to the secondary circuit is horizontally arranged, the transmission lines corresponding to the secondary circuit are A, B, C three phases from right to left in sequence, the line-to-ground height h is set to be the first height data 14m, the phase spacing d is set to be the first spacing data 13m, and the span is kept unchanged, i.e. the coordinates of the three phases are A, B, C, so as to obtain a first simulation model.
The second height data includes a first height and a second height. As shown in fig. 5, when the arrangement data corresponding to the secondary circuit is in a triangular arrangement, the horizontal phase pitch of the power transmission line corresponding to the secondary circuit is 8m of the second pitch data, the b phase is centered and is shifted upwards, the a phase and the C phase are shifted downwards on the left side and the right side, and are A, B, C three phases in sequence from right to left, the height of the A, C two-phase line is 20m of the first height, the height of the b phase line is 25m of the second height, and three-phase coordinates are A, B, C, so as to obtain a second simulation model.
The third height data includes a third height, a fourth height, and a fifth height, and the third pitch data includes a first pitch, a second pitch, and a third pitch. As shown in fig. 6 and fig. 7, when the arrangement data corresponding to the secondary circuit is the same-tower double-circuit arrangement, the arrangement data are divided into two arrangements of A1B1C 1-A2B 2C2 and A1B1C 1-C2B 2A2, three phases A1, B1 and C1 are sequentially arranged from top to bottom on the left, the ground clearance of the three phases A, B, C is respectively 34m, 24m and 14m, the distance from the center in the horizontal direction is respectively 8m, 11m and 9m, the power transmission line is symmetrically distributed about the y axis, and the coordinates are symmetrically distributed, so that a third simulation model is obtained.
As shown in fig. 8 and 9, when the arrangement data corresponding to the secondary circuits are arranged in a triangular manner, four groups of circuits are marked in the modes of (A1-B1-C1), (A2-B2-C2), (A3-B3-C3) and (A4-B4-C4), so that the four-circuit arrangement is the same-tower four-circuit arrangement, and the identification is convenient. In the horizontal tower structure, the power transmission lines are sequentially ordered from right to left according to fourth height data and fourth interval data, and in the vertical tower structure, the lines are divided into two groups and distributed on two sides of a y axis to be sequentially arranged from top to bottom, so that a corresponding fourth simulation model is obtained.
Step 302, collecting initial detection data of a secondary loop through an electric field sensor.
In the embodiment of the present invention, the implementation process of step 302 is similar to that of step 102, and will not be repeated here.
Step 303, reducing the voltage signal in the initial detection data according to a preset voltage division ratio by using a voltage division and voltage follower circuit, and generating intermediate detection data.
In the embodiment of the invention, the preset partial pressure ratio is 5.5 to 1. The voltage dividing and voltage follower circuit is used for reducing the input voltage and protecting the circuit. The electric field sensor is applied to the electric field environment of the transmission line with complex environment when in use, the collected voltage signals are large and are easy to influence, the error coefficient of the signals collected by the electric field sensor is large, the voltage sensor does not accord with the ADC input range allowed in the STM32 chip, in order to prevent the voltage value from becoming too close to the transmission line and exceeding the ADC input range, the input voltage is required to be reduced through a voltage dividing circuit, a protection circuit is required to be added during circuit design, the circuit board is prevented from being burnt out due to the occurrence of the too high voltage, the measurement result is influenced, the voltage ratio of the circuit design is 5.5 to 1, the measured high-voltage signals accord with the input range of the device, D1 and D2 serve as protection devices, the voltage follower serves as isolation circuits, high input impedance and low output impedance are provided, and the buffer function is achieved. Therefore, the voltage dividing circuit in the voltage dividing and voltage following circuit reduces the input voltage, and the voltage value is prevented from becoming larger and exceeds the input range of the ADC due to the fact that the voltage dividing circuit is too close to the power transmission line. The voltage follower can be used as an isolation circuit to provide high input impedance and low output impedance, plays a role in buffering, and can play a role in protecting the circuit. The voltage signal in the initial detection data can be reduced through the voltage dividing and voltage following circuit, and the intermediate detection data is generated.
And step 304, performing data conversion on the intermediate detection data through a data conversion circuit to generate target detection data.
Further, the data conversion circuit includes a filter circuit, a rectifier circuit, and an analog-to-digital conversion circuit, and the step 304 may include the following substeps S21-S24:
s21, filtering the intermediate detection data by a second-order active band-pass filter through a filter circuit to generate first conversion data.
S22, the first conversion data is converted from bipolar to unipolar through the rectification circuit, and second conversion data is generated.
S23, converting the second conversion data into a digital signal through an analog-to-digital conversion circuit, and generating third conversion data.
S24, taking the third conversion data as target detection data.
In the embodiment of the invention, the filter circuit is used for eliminating high-frequency interference signals, the filter circuit adopts a second-order active filter, the rectifier circuit is used for adjusting sinusoidal voltage, and the AO conversion circuit, namely the digital-to-analog conversion circuit, is used for converting acquired electric field analog signals into digital signals. The electric field sensor gathers the voltage signal of output and is sinusoidal alternating current signal, and STM32 can only read positive voltage signal, can't read half wave form signal, is difficult to satisfy the measurement sampling demand of the integrated ADC module in inside, consequently need adjust sinusoidal voltage through rectifier circuit to satisfy the AD sampling work of device. Compared with a precision rectifying circuit, the traditional bridge rectifying circuit realizes rectification by using a diode, so that voltage signals exceeding the conduction voltage drop by more than twice pass, the signal with too small voltage cannot be rectified, the measurement precision is influenced, the precision rectifying circuit can realize conversion rectification of weak alternating-current voltage signals, the acquired sinusoidal voltage signals are changed from bipolar to unipolar, the use performance is good, and the measurement precision can be effectively improved.
The non-contact measuring device is applied to environments with complex electromagnetic fields, because the space environment cannot be avoided, the signal value measured by the sensor is interfered by high-frequency harmonic components, the measuring result is influenced, distortion phenomenon occurs, when high-power equipment appears nearby or the electromagnetic environment fluctuates in actual use, signal interference is generated, the signal is caused to be distorted, the subsequent circuit measuring result is influenced, at the moment, the measuring error can be reduced by means of filtering processing, the high-frequency interference signal is eliminated, and the measuring precision is improved. In order to obtain an effective signal of the non-contact measuring device, the filter circuit adopts a second-order active band-pass filter, the principle of the second-order active band-pass filter enables signals to pass through a certain frequency band range, signals lower than the lower limit cutoff frequency of a pass band or higher than the upper limit cutoff frequency can be effectively restrained, signals of a specific frequency band are selected, the rectifying circuit can adjust sinusoidal voltage to enable the sinusoidal voltage to be changed into signals which can be read by STM32, and the effects of enabling measurement to be more accurate and improving measurement accuracy can be achieved.
And 305, comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data.
In the embodiment of the present invention, the implementation process of step 305 is similar to that of step 104, and will not be repeated here.
And 306, comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data.
In the embodiment of the present invention, the implementation process of step 306 is similar to that of step 105, and will not be repeated here.
Step 307, performing early warning operation according to the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop.
Further, step 307 may include the following substeps S31-S34:
s31, judging whether the first comparison data and the second comparison data are the same, if so, executing the step S32, and if not, executing the step S34.
S32, performing early warning operation according to the operation data corresponding to the early warning threshold value, and generating early warning operation data.
S33, adopting early warning operation data, first comparison data and second comparison data to construct a detection report corresponding to the secondary loop.
S34, the step of collecting initial detection data of the secondary circuit through the electric field sensor is carried out in a jumping mode.
In the embodiment of the invention, the central processing unit stores the data and brings the data into the built-in simulation model for processing, and the processed data is compared with the corresponding early warning threshold value to generate first comparison data. The early warning control processor can also compare the data with an early warning threshold value to generate second comparison data. When the first comparison data and the second comparison data are the same, the central processing unit and the early warning control processor judge that the loop is abnormal, early warning operation is carried out according to operation data corresponding to an early warning threshold value, namely, an operator is prompted through an operation indicator lamp and an audible and visual alarm module, early warning operation data are generated, and the early warning operation data, the first comparison data and the second comparison data are adopted to construct a detection report corresponding to the secondary loop. Otherwise, the step of collecting the initial detection data of the secondary circuit through the electric field sensor is carried out in a jumping mode to continue detection.
In the embodiment of the invention, the simulation model corresponding to the secondary circuit is constructed by acquiring the arrangement data of the secondary circuit and combining the arrangement data with a preset threshold value. The front acquisition end can process acquired data and send the data to the rear early warning end and the central processing unit respectively, the central processing unit stores the data and brings the data into an internally-arranged simulation model for processing, the processed data is compared with a corresponding early warning threshold value, the rear early warning end can also compare the data with the early warning threshold value, and an operator is prompted through the running indicator lamp and the audible-visual alarm module, so that the effects of cost saving, rapid communication and rapid and effective detection can be achieved.
Referring to fig. 10, fig. 10 is a block diagram of a secondary circuit detection system of a transformer substation according to a third embodiment of the present invention.
The third embodiment of the invention provides a secondary circuit detection system of a transformer substation, which is applied to a circuit detection device, wherein the circuit detection device comprises an electric field sensor and an early warning control processor, and the system comprises:
the simulation model construction module 1001 is configured to obtain arrangement data of the secondary circuit, and construct a simulation model corresponding to the secondary circuit according to the arrangement data and a preset threshold.
The initial detection data acquisition module 1002 is configured to acquire initial detection data of the secondary circuit through the electric field sensor.
The target detection data generation module 1003 is configured to perform data adjustment and conversion on the initial detection data, and generate target detection data.
The first comparison data generating module 1004 is configured to compare the target detection data with an early warning threshold corresponding to the simulation model, and generate first comparison data.
The second comparison data generating module 1005 is configured to compare, by using the early warning control processor, the target detection data with the early warning threshold value, and generate second comparison data.
The detection report generating module 1006 is configured to perform an early warning operation according to the first comparison data and the second comparison data, and generate a detection report corresponding to the secondary loop.
Optionally, the preset threshold includes first height data, second height data, third height data, fourth height data, first pitch data, second pitch data, third pitch data, and fourth pitch data. The simulation model construction module 1001 includes:
and the plane coordinate system construction module is used for constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis.
And the first simulation model construction module is used for constructing a first simulation model by combining the first height data and the first interval data with a plane coordinate system if the arrangement data are horizontally arranged.
And the second simulation model construction module is used for constructing a second simulation model by combining the second height data and the second interval data with the plane coordinate system if the arrangement data are arranged in a triangular manner.
And the third simulation model construction module is used for constructing a third simulation model by combining the third height data and the third interval data with a plane coordinate system if the arrangement data are arranged in a same-tower double-loop manner.
And the fourth simulation model construction module is used for constructing a fourth simulation model by combining the fourth height data and the fourth interval data with a plane coordinate system if the arrangement data are arranged in the same tower in four rounds.
Optionally, the loop detection means comprises a voltage dividing and voltage follower circuit and a data conversion circuit. The target detection data generation module 1003 includes:
the intermediate detection data generation module is used for generating intermediate detection data by reducing voltage signals in the initial detection data according to a preset voltage division ratio through a voltage division and voltage following circuit.
And the target detection data generation sub-module is used for carrying out data conversion on the intermediate detection data through the data conversion circuit to generate target detection data.
Optionally, the data conversion circuit includes a filter circuit, a rectifier circuit, and an analog-to-digital conversion circuit, and the target detection data generation sub-module may perform the steps of:
the intermediate detection data is filtered by a second-order active band-pass filter through a filter circuit to generate first conversion data.
The first conversion data is converted from bipolar to unipolar through the rectification circuit, and the second conversion data is generated.
The second conversion data is converted into a digital signal by an analog-to-digital conversion circuit, and third conversion data is generated.
The third conversion data is taken as target detection data.
Optionally, the detection report generation module 1006 includes:
and the comparison data judging module is used for judging whether the first comparison data and the second comparison data are identical.
And the early warning operation data generation module is used for carrying out early warning operation according to the operation data corresponding to the early warning threshold value if so, and generating early warning operation data.
And the detection report generation sub-module is used for constructing a detection report corresponding to the secondary loop by adopting the early warning operation data, the first comparison data and the second comparison data.
And the jump module is used for jumping to execute the step of acquiring the initial detection data of the secondary circuit through the electric field sensor if not.
The embodiment of the invention also provides electronic equipment, which comprises: a memory and a processor, the memory storing a computer program; the computer program, when executed by a processor, causes the processor to perform the substation secondary loop detection method of any of the embodiments described above.
The memory may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory has memory space for program code to perform any of the method steps described above. For example, the memory space for the program code may include individual program code for implementing the various steps in the above method, respectively. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. The program code may be compressed, for example, in a suitable form. These codes, when executed by a computing processing device, cause the computing processing device to perform the steps in the substation secondary loop detection method described above.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the substation secondary circuit detection method according to any of the embodiments above.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A secondary loop detection method for a transformer substation, which is applied to a loop detection device, wherein the loop detection device comprises an electric field sensor and an early warning control processor, and the method comprises the following steps:
obtaining arrangement data of a secondary circuit, and constructing a simulation model corresponding to the secondary circuit according to the arrangement data and a preset threshold;
acquiring initial detection data of the secondary circuit through the electric field sensor;
performing data adjustment and conversion on the initial detection data to generate target detection data;
comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data;
Comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data;
and performing early warning operation according to the first comparison data and the second comparison data, and generating a detection report corresponding to the secondary loop.
2. The substation secondary circuit detection method according to claim 1, wherein the preset threshold value includes first height data, second height data, third height data, fourth height data, first pitch data, second pitch data, third pitch data, and fourth pitch data; the step of constructing a simulation model corresponding to the secondary loop by combining the arrangement data with a preset threshold value comprises the following steps:
constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis;
if the arrangement data are horizontally arranged, a first simulation model is built by combining the first height data and the first interval data with the plane coordinate system;
if the arrangement data are arranged in a triangular mode, a second simulation model is built by combining the second height data and the second interval data with the plane coordinate system;
If the arrangement data are arranged in a same-tower double-loop way, a third simulation model is built by combining the third height data and the third interval data with the plane coordinate system;
and if the arrangement data are arranged in four loops in the same tower, adopting the fourth height data and the fourth interval data to combine with the plane coordinate system to construct a fourth simulation model.
3. The substation secondary circuit detection method according to claim 1, wherein the circuit detection device includes a voltage dividing and following circuit and a data conversion circuit; the step of performing data adjustment and conversion on the initial detection data to generate target detection data comprises the following steps:
reducing voltage signals in the initial detection data according to a preset voltage dividing ratio through the voltage dividing and voltage following circuit to generate intermediate detection data;
and performing data conversion on the intermediate detection data through the data conversion circuit to generate target detection data.
4. The substation secondary circuit detection method according to claim 3, wherein the data conversion circuit includes a filter circuit, a rectifier circuit, and an analog-to-digital conversion circuit; the step of generating target detection data by performing data conversion on the intermediate detection data by the data conversion circuit includes:
Filtering the intermediate detection data by the filter circuit through a second-order active band-pass filter to generate first conversion data;
converting the first conversion data from bipolar to unipolar through the rectification circuit to generate second conversion data;
converting the second conversion data into a digital signal through the analog-to-digital conversion circuit to generate third conversion data;
and taking the third conversion data as target detection data.
5. The method for detecting a secondary circuit of a transformer substation according to claim 1, wherein the step of generating a detection report corresponding to the secondary circuit by performing an early warning operation according to the first comparison data and the second comparison data comprises:
judging whether the first comparison data and the second comparison data are identical or not;
if yes, performing early warning operation according to the operation data corresponding to the early warning threshold value, and generating early warning operation data;
constructing a detection report corresponding to the secondary loop by adopting the early warning operation data, the first comparison data and the second comparison data;
if not, the step of collecting the initial detection data of the secondary loop through the electric field sensor is carried out in a jumping mode.
6. A secondary loop detection system for a substation, the secondary loop detection system being applied to a loop detection device, the loop detection device including an electric field sensor and an early warning control processor, the system comprising:
the simulation model construction module is used for acquiring arrangement data of the secondary circuit and constructing a simulation model corresponding to the secondary circuit according to the arrangement data combined with a preset threshold value;
the initial detection data acquisition module is used for acquiring initial detection data of the secondary loop through the electric field sensor;
the target detection data generation module is used for carrying out data adjustment and conversion on the initial detection data to generate target detection data;
the first comparison data generation module is used for comparing the target detection data with an early warning threshold value corresponding to the simulation model to generate first comparison data;
the second comparison data generation module is used for comparing the target detection data with the early warning threshold value through the early warning control processor to generate second comparison data;
and the detection report generation module is used for carrying out early warning operation according to the first comparison data and the second comparison data and generating a detection report corresponding to the secondary loop.
7. The secondary loop detection system of claim 6, wherein the preset threshold comprises first height data, second height data, third height data, fourth height data, first pitch data, second pitch data, third pitch data, and fourth pitch data; the simulation model construction module comprises:
the plane coordinate system construction module is used for constructing a plane coordinate system by taking the central vertical line of the secondary circuit as a vertical axis and the ground as a horizontal axis;
the first simulation model construction module is used for constructing a first simulation model by combining the first height data and the first interval data with the plane coordinate system if the arrangement data are horizontally arranged;
the second simulation model construction module is used for constructing a second simulation model by combining the second height data and the second interval data with the plane coordinate system if the arrangement data are arranged in a triangular mode;
the third simulation model construction module is used for constructing a third simulation model by adopting the third height data and the third interval data to combine the plane coordinate system if the arrangement data are arranged in a same-tower double-loop way;
And the fourth simulation model construction module is used for constructing a fourth simulation model by adopting the fourth height data and the fourth interval data to combine the plane coordinate system if the arrangement data are arranged in the same tower in four rounds.
8. The secondary loop detection system of claim 6, wherein the loop detection device comprises a voltage dividing and follower circuit and a data conversion circuit; the target detection data generation module includes:
the intermediate detection data generation module is used for reducing voltage signals in the initial detection data according to a preset voltage division ratio through the voltage division and voltage follower circuit to generate intermediate detection data;
and the target detection data generation sub-module is used for carrying out data conversion on the intermediate detection data through the data conversion circuit to generate target detection data.
9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the steps of the substation secondary loop detection method according to any one of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed, implements the substation secondary circuit detection method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310996288.1A CN117007890A (en) | 2023-08-08 | 2023-08-08 | Substation secondary circuit detection method, system, equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310996288.1A CN117007890A (en) | 2023-08-08 | 2023-08-08 | Substation secondary circuit detection method, system, equipment and medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117007890A true CN117007890A (en) | 2023-11-07 |
Family
ID=88575898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310996288.1A Pending CN117007890A (en) | 2023-08-08 | 2023-08-08 | Substation secondary circuit detection method, system, equipment and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117007890A (en) |
-
2023
- 2023-08-08 CN CN202310996288.1A patent/CN117007890A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103076491B (en) | Supply line's detection method of AC/DC universal and testing circuit | |
| CN204064509U (en) | A kind of temperature of high-tension switch cabinet on-line monitoring system | |
| CN106226653A (en) | The transfer law assessment system of the voltage dip of multistage power grid and appraisal procedure | |
| CN103454520A (en) | Transformer winding deformation on-line monitoring method based on on-line frequency response method | |
| CN103513095A (en) | Data acquisition device applied to power distribution line fault indicator detection | |
| CN103513154A (en) | Power distribution network electric leakage signal on-line detection device | |
| CN110837040A (en) | Charger mainboard test equipment for simulating wireless charging of Qi standard by using real coil | |
| CN102981061A (en) | Direct earth capacitance gauge in converting station power distribution system | |
| CN112285424B (en) | System and method for monitoring contact resistance and lightning current of base of shipborne electronic equipment | |
| CN203658521U (en) | Mobile insulation supervision instrument of transformer station DC system | |
| CN113484683A (en) | Power distribution network fault positioning system and method based on transient information | |
| CN117007890A (en) | Substation secondary circuit detection method, system, equipment and medium | |
| CN203310903U (en) | Transformer iron core earth current online monitor | |
| CN204807615U (en) | Leakage current of an arrester signal pickup assembly | |
| CN204925324U (en) | A partial discharge test platform for high tension switchgear | |
| CN103616653A (en) | System and method for testing clock synchronization and clock precision of power quality monitor terminal | |
| CN110736951A (en) | portable fault indicator detection and distribution network fault simulation device | |
| CN111781418B (en) | Low-voltage distribution network residual current monitoring method, equipment and system | |
| CN112379303A (en) | Intelligent sensing system for grounding state of power transmission line | |
| CN203561715U (en) | Power distribution network electric leakage signal on-line detection device | |
| CN208239563U (en) | Novel bluetooth high voltage direct current generator and system | |
| CN114089090A (en) | Power distribution network fault indicator with capacitor voltage division power taking function and control method thereof | |
| CN211239342U (en) | Reactive compensation power factor control device | |
| CN216449643U (en) | Electric power parameter measurement system | |
| CN110988416A (en) | Outdoor three-phase high-voltage electric energy meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |