CN112285458A - Flexible direct current line traveling wave protection testing device - Google Patents
Flexible direct current line traveling wave protection testing device Download PDFInfo
- Publication number
- CN112285458A CN112285458A CN202011066512.XA CN202011066512A CN112285458A CN 112285458 A CN112285458 A CN 112285458A CN 202011066512 A CN202011066512 A CN 202011066512A CN 112285458 A CN112285458 A CN 112285458A
- Authority
- CN
- China
- Prior art keywords
- data
- flexible direct
- traveling wave
- module
- current line
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 230000009471 action Effects 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 40
- 238000004088 simulation Methods 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims description 27
- 238000007781 pre-processing Methods 0.000 claims description 21
- 238000012856 packing Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 19
- 238000011056 performance test Methods 0.000 abstract description 6
- 230000001052 transient effect Effects 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 10
- 101100499229 Mus musculus Dhrsx gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
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
- G01R31/003—Environmental or reliability tests
Abstract
The invention provides a traveling wave protection testing device for a flexible direct current line, which comprises: a control module, comprising: a data acquisition module; the data processing module is connected with the data acquisition module and used for performing data format conversion on the fault simulation data and the fault recording data to obtain fault data in a data format required by the flexible direct-current line traveling wave protection device to be tested and sending the fault data to the flexible direct-current line traveling wave protection device; the data processing module is also used for acquiring action information of the flexible direct current line traveling wave protection device; and the data acquisition module is also used for generating a test report according to the action information. Through the technical scheme of the invention, the prepared fault or normal operation data is converted into a standard form of the secondary side of the optical transformer of the direct current system without distortion and is output to the traveling wave protection device of the flexible direct current line, and the action performance test of the traveling wave protection device of the flexible direct current line is completed.
Description
Technical Field
The invention relates to the technical field of power system automation, in particular to a traveling wave protection testing device for a flexible direct current line.
Background
Because of the importance of the relay protection device in the power system, the power grid has high requirements on the performance of the relay protection device, and the relay protection device needs to be tested comprehensively and systematically before research, development, production, installation and commissioning so as to ensure that the performance of the relay protection device reaches the requirements of the power system. However, in an actual power system, the electrical fault information for testing the stability, reliability and rapidity of the relay protection device cannot be reproduced repeatedly, so that a power system worker needs a relay protection testing device for reproducing the fault information of the power system and further testing and checking the relay protection device. Therefore, a relay protection testing device is required to be capable of truly simulating an input signal of a relay protection device, namely a signal on the secondary side of a power system, receiving an output signal of the relay protection device, comparing and analyzing similarities and differences between the output signal of the relay protection device under a certain input signal and an expected output signal, and judging reliability and correctness of actions of the relay protection device. In order to meet the requirement of ultra-high-speed line protection detection, the transient traveling wave protection tester needs to output an ultra-high-speed fault traveling wave signal, so that rich information stored in the fault signal is not lost. Therefore, the research of the ultra-high-speed traveling wave generation technology is very important for the development of the transient traveling wave protection tester.
The detection technology for the flexible line protection is not developed, the factory detection can utilize the perfection conditions of large-scale equipment such as laboratory RTDS and the like, but the field detection conditions are limited, and the conventional relay protection tester cannot output high-frequency signals due to the limitation of the voltage and current power amplification characteristics, so that the flexible line protection tester is not suitable for the field detection of the flexible line ultra-high speed protection. The RTDS can output 200kHz high-frequency signals at present, and meets the test requirement of flexible line ultra-high speed protection, but the RTDS cannot be applied to infrastructure field detection and protection annual inspection due to large simulation equipment. Therefore, research on field test technology is urgently needed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, an aspect of the present invention is to provide a travelling wave protection testing apparatus for a flexible dc line.
In view of the above, according to an aspect of the present invention, a travelling wave protection testing apparatus for a flexible dc line is provided, including: a control module, comprising: the data acquisition module is used for generating fault simulation data of the flexible direct-current circuit in a simulation mode, or receiving fault recording data of the flexible direct-current circuit and sending the fault simulation data or the fault recording data to the data processing module; the data processing module is connected with the data acquisition module and used for receiving fault simulation data of the flexible direct-current line or fault recording data of the flexible direct-current line, performing data format conversion on the fault simulation data and the fault recording data to obtain fault data of a data format required by the flexible direct-current line traveling wave protection device to be tested, and sending the fault data to the flexible direct-current line traveling wave protection device; the data processing module is also used for acquiring action information of the flexible direct current line traveling wave protection device and sending the action information to the data acquisition module; and the data acquisition module is further used for receiving the action information and generating a test report according to the action information, wherein the action information is generated by the flexible direct current line traveling wave protection device in response to the second fault data.
The invention provides a flexible direct current line traveling wave protection testing device which comprises a control module and a data processing module, wherein the control module comprises a data acquisition module. The data acquisition module is connected with the data processing module and is used for data communication through a serial port. The data acquisition module is used for preparing fault and normal operation data, and the fault data can be field recording data of the power system or simulation data generated by power system simulation software in a calculation mode. The data format conversion is carried out through the data processing module, a tested device (namely, a flexible direct current line traveling wave protection device to be tested) has specific format requirements on input data and must be an optical digital signal, and therefore, the prepared fault or normal operation data must be converted into a format required by a flexible direct current line traveling wave protection device interface protocol without distortion through data format conversion, so that standard fault data are formed. And inputting the fault data into the tested device, and making corresponding action on the information carried by the fault data by the tested device. The data processing module can record the action condition of the tested device and feed back the action condition to the data acquisition module. And the data acquisition module is used for detecting the judgment result, reading in the action behavior of the tested device, judging the action performance of the tested device and automatically forming a test report. The flexible direct-current line traveling wave protection test device provided by the invention can convert prepared fault or normal operation data into a standard form of a secondary side of an optical transformer of a direct-current system without distortion and output the standard form to the flexible direct-current line traveling wave protection device, can complete the action performance test of the flexible direct-current line traveling wave protection device, has the characteristics of small volume and high-frequency signal output, and thus meets the requirements of application to infrastructure field detection and annual inspection.
For a flexible direct current power transmission system, a data format corresponding to an optical transformer is a data format specified by an interface protocol of a measurement device and a control and protection device, and is generally determined by a data format required by a flexible direct current line traveling wave protection device (relay protection device).
The flexible direct current line traveling wave protection device is specifically a flexible direct current line traveling wave ranging and traveling wave protection device.
The traveling wave protection testing device for the flexible direct current line, provided by the invention, can also have the following technical characteristics:
in the above technical solution, the control module further includes: and the preprocessing module is connected with the data acquisition module and is used for converting the file format of the fault simulation data.
In the technical scheme, the data processing module comprises a preprocessing module. And after the data processing module receives the data information transmitted by the data acquisition module and the test starting command, the data processing module outputs the fault data of the power system to the preprocessing module. If the input data is simulation data generated by the power system simulation software, the output step length is adjusted to be the same as the output speed specified by the interface protocol, and the input data is input into the computer. And if the recorded data is the field wave recording data, directly converting the data format. In addition, for simulation data, data output formats of different simulation software are different, and in a preprocessing module of the input flexible direct current line traveling wave protection testing device, the simulation data need to be converted into a uniform file format which can be processed by a computer.
In any of the above technical solutions, the data processing module includes: an interface module; the data packing module is connected with the interface module and used for packing the fault simulation data into data frames in a corresponding format according to an interface protocol of the interface module and outputting the data frames to the interface module; and the interface module is connected with the flexible direct-current line traveling wave protection device and used for carrying out format conversion on the data frame to obtain fault data.
In the technical scheme, the data processing module comprises a preprocessing module, an interface module and a data packaging module. After the file format conversion of the fault data is completed by the preprocessing module, the fault data is transmitted to the data packaging module. And the data packing module packs the data into a data frame according to the interface protocol of the interface module and outputs the data frame to the interface module. The interface module converts fault data taking a digital signal as a carrier into an optical signal on the secondary side of the optical transformer to be output. The prepared fault or normal operation data is converted into a standard form of a secondary side of the optical transformer of the direct current system without distortion and is output to the relay protection device, and the action performance test of the relay protection device is completed.
In any of the above technical solutions, the data processing module further includes: the detection module is respectively connected with the flexible direct-current line traveling wave protection device and the data acquisition module, and is used for acquiring action information of the flexible direct-current line traveling wave protection device and transmitting the action information to the data acquisition module.
In the technical scheme, the data processing module comprises a preprocessing module, an interface module, a data packing module and a detection module. The action information of the device to be detected (namely the flexible direct current line traveling wave protection device) is collected and recorded through the detection module and fed back to the data acquisition module. The data acquisition module and the data processing module are in data communication through a serial port, the action behavior of the tested device is read in by receiving the action information fed back by the detection module, the judgment result is detected, the action performance of the relay protection device can be judged, and a test report is automatically formed.
In any of the above technical solutions, the interface protocol is one of IEC60870-5 series protocols.
In the technical scheme, an interface protocol of an interface module is determined according to a data format required by the flexible direct-current line traveling wave protection device. The data format of the data frame is determined by the interface protocol.
In any of the above technical solutions, the interface protocol is IEC60870-5-1 protocol.
In the technical scheme, an interface protocol is IEC60870-5-1 protocol, and a data frame format is FT3 format. The FT3 format refers to a transmission frame format of a link layer, and is a frame format specified in the IEC60044-8 electronic current transformer standard.
In any of the above technical solutions, the range of the data sampling rate of the data frame is: 40 khz to 60 khz; the range of data transmission rates for a data frame is: 15 megabits/second to 25 megabits/second.
In any of the above solutions, the data length of the data frame is 208 bits, and the data sampling rate is 50 khz; the data transfer rate is 20 mbits/sec. But is not limited thereto.
In any of the above technical solutions, the data processing module includes a digital signal processor DSP; the control module is connected with the data processing module through a serial communication line.
In the technical scheme, the computer equipment is specifically an embedded computer (upper computer). The embedded computer can run upper computer software special for the flexible direct-current line traveling wave protection device, transmit transient fault simulation data of the power system calculated by using electromagnetic transient programs (EMTP and PSCAD) or fault recording data recorded by the fault recording device to the data processing module, receive the action condition of the tested device fed back by the detection module, and form a test report after analysis. The detection module is specifically a switching value detection loop.
In any of the above technical solutions, the interface module is an electrical-to-optical conversion interface.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic diagram of a flexible dc line travelling wave protection test apparatus according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a travelling wave protection testing apparatus for a flexible direct current line according to another embodiment of the present invention;
fig. 3 shows a schematic workflow diagram of a traveling wave protection testing apparatus for a flexible direct current line according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 2 is:
the system comprises a control module 100, a data acquisition module 102, a preprocessing module 104, a data processing module 200, a data packaging module 202, an interface module 204, a detection module 206, a digital signal processor 208 and a relay protection device 210.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
A flexible direct current line travelling wave protection test apparatus according to some embodiments of the present invention is described below with reference to fig. 1 to 3.
Example 1
As shown in fig. 1 and fig. 2, according to an embodiment of an aspect of the present invention, a flexible dc line traveling wave protection testing apparatus is provided. The flexible direct current line traveling wave protection testing device comprises a control module 100 and a data processing module 200, wherein the control module 100 comprises a data acquisition module 102. The control module 100 is connected to the data processing module 200, and performs data communication through a serial port.
Specifically, the data acquisition module 102 prepares fault and normal operation data, where the fault data may be field recording data of the power system or simulation data generated by calculation of simulation software of the power system. Specifically, simulation software is used to generate fault simulation data of the flexible direct-current line in a simulation manner, or to receive fault recording data of the flexible direct-current line, and to send the fault simulation data or the fault recording data to the data processing module 200.
The data format conversion is performed by the data processing module 200, the device to be tested (i.e. the flexible dc line traveling wave protection device to be tested) has a specific format requirement for the input data, and must be an optical digital signal, so that the prepared fault or normal operation data must be converted into the data format required by the flexible dc line traveling wave protection device without distortion by data format conversion, thereby forming standard fault data. And outputting the fault data to the tested device, and making corresponding action on the information carried by the fault data by the tested device.
The action information of the flexible direct-current line traveling-wave protection device is acquired through the data processing module 200 and sent to the data acquisition module 102, and specifically, the data processing module 200 collects and records the action condition of the device to be tested and feeds the action condition back to the data acquisition module 102.
The data acquisition module 102 reads the action behavior of the device under test, detects the judgment result, judges the action performance of the device under test, and automatically forms a test report.
The flexible direct-current line traveling wave protection test device provided by the embodiment of the invention realizes that the prepared fault or normal operation data is converted into a standard form of a secondary side of the optical transformer of the direct-current system without distortion and is output to the flexible direct-current line traveling wave protection device, the action performance test of the flexible direct-current line traveling wave protection device is completed, and the flexible direct-current line traveling wave protection test device has the characteristics of small volume and high-frequency signal output, thereby meeting the requirements of being applied to infrastructure field detection and annual inspection.
For the flexible direct current transmission system, the data format corresponding to the optical transformer is the data format specified by the interface protocol of the measurement device and the control and protection device, and is generally determined by the data format required by the traveling wave protection device (i.e., the relay protection device 210) of the flexible direct current line.
The flexible direct current line traveling wave protection device is specifically a flexible direct current line traveling wave ranging and traveling wave protection device.
Example 2
According to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the control module 100 includes: and the preprocessing module 104, the preprocessing module 104 is connected with the data acquisition module 102, and the file format of the fault simulation data is converted through the preprocessing module 104.
Specifically, the preprocessing module 104 outputs the power system fault data to the preprocessing module 104 after the control module 100 receives the data information and the command for starting the test, which are transmitted by the data acquisition module 102. If the input data is simulation data generated by the power system simulation software, the output step length is adjusted to be the same as the output speed specified by the interface protocol, and the input data is input into the computer. And if the recorded data is the field wave recording data, directly converting the data format. In addition, for simulation data, data output formats of different simulation software are different, and in the preprocessing module 104 of the input flexible direct current line traveling wave protection test device, the simulation data must be converted into a uniform file format which can be processed by a computer.
Example 3
According to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the data processing module 200 includes an interface module 206 and a data packing module 204, the interface module 206 is connected to the data packing module 204, and the interface module 206 is connected to the flexible dc line traveling wave protection device. The data packing module 204 is configured to pack the fault simulation data into a data frame in a corresponding format according to an interface protocol of the interface module 206, and output the data frame to the interface module 206; the interface module 206 is configured to perform format conversion on the data frame to obtain fault data.
The preprocessing module 104, specifically, after the preprocessing module 104 converts the file format of the fault data, the fault data is transmitted to the data packing module 204. The data packing module 204 packs data into a data frame with a corresponding format according to an interface protocol of the interface module and outputs the data frame to the interface module 206, and the interface module 206 receives the data frame and performs electro-optical conversion on the data frame, so that fault data with a digital signal as a carrier is converted into an optical signal on the secondary side of the optical transformer and output. The prepared fault or normal operation data is converted into a standard form of a secondary side of the direct-current system optical transformer without distortion and is output to the relay protection device 210, and the action performance test of the relay protection device 210 is completed.
Specifically, the interface module 206 is an electrical-to-optical conversion interface.
Example 4
According to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the data processing module 200 further includes a detection module 208, where the detection module 208 is connected to the flexible dc line traveling wave protection device and the data acquisition module 102, respectively, and collects and records the motion information of the device to be detected through the detection module 208, and feeds the motion information back to the data acquisition module 102. The data acquisition module 102 receives the operation information fed back by the detection module 208, reads the operation behavior of the device under test, detects the determination result, determines the operation performance of the relay protection device 210, and automatically forms a test report.
In this embodiment, the interface protocol is IEC60870-5-1 protocol, and the format of the data frame is FT3 format. The FT3 format refers to a transmission frame format of a link layer, and is a frame format specified in the IEC60044-8 electronic current transformer standard.
In other embodiments, the interface protocol is any of the IEC60870-5 family of protocols. The data format of the data frame is determined by the interface protocol.
In other embodiments, the data length of the data frame is 208 bits; the range of data sampling rates for the data frames is: 40 khz to 60 khz; the range of data transmission rates for a data frame is: 15 megabits/second to 25 megabits/second.
In this embodiment, the data sampling rate is 50khz and the data transfer rate is 20 mbits/sec.
In this embodiment, the preset format is a common format comtrade format for power system transient data exchange.
Example 5
According to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the control module 100 is a computer device running an electromagnetic transient simulation program; the data processing module 200 includes a digital signal processor 208; the control module 100 and the data processing module 200 are connected through a serial communication line.
Specifically, the data acquisition module 102 transmits the transient fault simulation data of the power system calculated by using the electromagnetic transient program (EMTP, PSCAD) or the fault recording data recorded by the fault recording device to the data processing module 200, and receives the operation condition of the device under test fed back by the detection module 208 through the data acquisition module 102, and analyzes the operation condition to form a test report.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in fig. 2 and 3, the traveling wave protection testing apparatus for a flexible dc line can be divided into the following two parts:
1) a data preprocessing module: the control module 100 is specifically an embedded computer. The embedded computer includes a data acquisition module 102 and a pre-processing module 104.
2) The data processing module is composed of a Digital Signal Processor (DSP) and a peripheral circuit thereof: a data packing module 204, specifically a data packing unit; the interface module 206 is specifically an electrical-to-optical conversion interface. The detection module 208 is specifically a switching value detection circuit.
The embedded computer can run upper computer software special for a transient traveling wave protection tester (flexible direct current line traveling wave protection device), transmits power system transient fault simulation data calculated by electromagnetic transient programs (EMTP and PSCAD) or fault recording data recorded by a fault recording device to the data format conversion module, receives the action condition of the tested device fed back by the switching value detection loop, and forms a test report after analysis. The device to be tested is the relay protection device 210, specifically a flexible direct current line traveling wave ranging and traveling wave protection device.
The preprocessing module 104 converts the file format into a standard format which can be processed by a computer, if the input data is simulation data generated by the power system simulation software, the output step length is adjusted to be the same as the output rate specified by the interface protocol, the output data is input into the computer, and the output file format is converted into a format which can be processed by the computer; and if the recorded data is the field wave recording data, directly converting the data format.
After the file format conversion is completed, the digital signal processor 210 receives the data information transmitted by the upper computer and the command for starting the test, and then outputs the fault data of the power system to the data format conversion module for data format conversion, and the data format conversion module is divided into two parts: a data packing unit and an electro-optical conversion interface. The data packing unit packs the data into a data frame and outputs the data frame to the electro-optical conversion interface 306, and the electro-optical conversion interface converts the digital signal into an optical signal on the secondary side of the optical transformer and outputs the optical signal. The prepared fault or normal operation data is converted into a standard form of a secondary side of the direct-current system optical transformer without distortion and is output to the relay protection device 210, and the action performance test of the relay protection device 210 is completed.
The action information of the relay protection device 210 is collected by the switching value detection circuit, and the switching value detection circuit can record the action information of the device to be detected and feed back the action information to the embedded computer. The embedded computer is in data communication with the digital signal processor 208 via a serial port.
For the dc system, the data format corresponding to the optical transformer is the data format specified by the interface protocol between the measuring device and the control and protection device, and is generally determined by the data format required by the relay protection device 210.
The relay protection device 210 is specifically a flexible direct current line traveling wave ranging and traveling wave protection device.
Fig. 3 shows a schematic workflow diagram of a traveling wave protection testing apparatus for a flexible direct current line according to an embodiment of the present invention. The embodiment is applied to a test method flow when input data is four-terminal flexible direct-current transmission system simulation data, and the method comprises the following steps:
step 1) constructing a four-terminal flexible direct-current power transmission system based on a PSCAD platform, setting conditions such as normal operation, internal and external faults and the like, and generating simulation data. In this embodiment, the data sampling rate is 50kHz, and the simulation step size can be set to 20 μ s.
And 2) inputting the generated simulation data into a test system, preprocessing the simulation data, converting the format of the data file into a comtrade format, and adjusting the output step length according to the data transmission rate of an interface of the relay protection device 210, wherein the data frame data length of the protocol standard in the embodiment is 208 bits, the data sampling rate is 50kHz, and the data transmission rate is 20Mbit/s, so that the data transmission rate can meet the requirement.
And step 3) packing the data into a data frame form through a corresponding data packing unit 304, specifically, an FT3 format, wherein the table 1 is an FT3 standard data format table of an IEC60870-5-1 protocol, the table 1 shows a flexible-direct system measuring device, a control and protection device, an ABB valve control interface protocol, a medium multimode optical fiber, an optical wavelength of 820nm-860nm, a link layer conforming to the IEC60870-5-1 FT3 format, an effective data rate of 20Mbit/s, and anti-Manchester coding.
The FT3 format data is 26 bytes long, and 208 bits in total: 1-16 bits are frame headers; the 17-24 bits are equipment codes; the 25-32 bits are used for determining whether the six information channels in the FT3 format are effective or not, 0 is effective, and 1 is ineffective; each 24 bits of 33-176 bits are a data channel for carrying data information, wherein bit23 is a sign bit; 177-192 bits are a sampling counter; 193-208 bits are used as check codes generated by the data for checking data transmission. The data sampling rate is 50kHz, and one data frame is packed every 20 mus and output to the electro-optical conversion interface 306.
TABLE 1 FT3 Standard data Format Table for IEC60870-5-1 protocol
And step 4) the electro-optical conversion interface converts the received data frame into FT3 format output conforming to IEC60870-5-1 protocol without distortion.
And step 5) transmitting the data in the FT3 format conforming to the IEC60870-5-1 protocol to the relay protection device 210, and enabling the relay protection device to perform corresponding actions according to the information carried by the signals.
And 6) reading the action behavior of the tested device by the flexible direct-current line traveling wave distance measurement and traveling wave protection tester, judging the action performance of the relay protection device 210 and automatically forming a test report.
In the description herein, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly stated or limited otherwise; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a flexible direct current circuit travelling wave protection testing arrangement which characterized in that includes:
a control module, comprising:
the data acquisition module is used for generating fault simulation data of the flexible direct-current line in a simulation mode, or receiving fault recording data of the flexible direct-current line and sending the fault simulation data or the fault recording data to the data processing module;
the data processing module is connected with the data acquisition module and is used for receiving fault simulation data of the flexible direct-current line or fault recording data of the flexible direct-current line, performing data format conversion on the fault simulation data and the fault recording data to obtain fault data of a data format required by the flexible direct-current line traveling wave protection device to be tested, and sending the fault data to the flexible direct-current line traveling wave protection device;
the data processing module is further configured to acquire action information of the flexible direct-current line traveling-wave protection device and send the action information to the data acquisition module;
the data acquisition module is further configured to receive the action information and generate a test report according to the action information, wherein,
the action information is the action information generated by the flexible direct current line traveling wave protection device in response to the fault data.
2. The traveling wave protection testing device of claim 1, wherein the control module further comprises:
the preprocessing module is connected with the data acquisition module and is used for converting the file format of the fault simulation data.
3. The traveling wave protection testing device of claim 2, wherein the data processing module comprises:
an interface module;
the data packing module is connected with the interface module and used for packing the fault simulation data into data frames in corresponding formats according to an interface protocol of the interface module and outputting the data frames to the interface module;
the interface module is connected with the flexible direct current line traveling wave protection device and used for carrying out format conversion on the data frame to obtain the fault data.
4. The traveling wave protection test device for the flexible direct current line according to claim 3, wherein the data processing module further comprises:
the detection module is respectively connected with the flexible direct-current line traveling wave protection device and the data acquisition module, and is used for acquiring action information of the flexible direct-current line traveling wave protection device and transmitting the action information to the data acquisition module.
5. The traveling wave protection test device for flexible direct current lines according to claim 3,
the interface protocol is one of IEC60870-5 series protocols.
6. The traveling wave protection test device for flexible direct current lines according to claim 3,
the range of data sampling rates of the data frames is: 40 khz to 60 khz;
the range of the data transmission rate of the data frame is as follows: 15 megabits/second to 25 megabits/second.
7. The traveling wave protection test device for flexible direct current lines according to claim 6,
the data sampling rate is 50 kilohertz;
the data transfer rate is 20 mbits/sec.
8. The traveling wave protection test device for a flexible direct current line according to any one of claims 1 to 7,
the data processing module comprises a digital signal processor;
the control module is connected with the data processing module through a serial communication line.
9. The traveling wave protection test device for the flexible direct current line according to claim 3, wherein the interface module is an electro-optical conversion interface.
10. The traveling wave protection test device for the flexible direct current line according to claim 5, wherein the interface protocol is IEC60870-5-1 protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066512.XA CN112285458A (en) | 2020-09-30 | 2020-09-30 | Flexible direct current line traveling wave protection testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066512.XA CN112285458A (en) | 2020-09-30 | 2020-09-30 | Flexible direct current line traveling wave protection testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112285458A true CN112285458A (en) | 2021-01-29 |
Family
ID=74422293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011066512.XA Pending CN112285458A (en) | 2020-09-30 | 2020-09-30 | Flexible direct current line traveling wave protection testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112285458A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129001A (en) * | 2011-01-07 | 2011-07-20 | 山东大学 | Digital relay protection device testing system and method |
| CN204008958U (en) * | 2014-06-03 | 2014-12-10 | 国家电网公司 | Intelligent transformer station transmission line travelling wave fault location device |
| CN205231703U (en) * | 2015-11-30 | 2016-05-11 | 安徽理工大学 | System based on optics current transformer improve reliability of relay protection |
| CN105738759A (en) * | 2014-12-12 | 2016-07-06 | 国家电网公司 | Transient recording data-based direct-current power transmission line fault locating method |
| CN106385015A (en) * | 2016-11-11 | 2017-02-08 | 清华大学 | Protecting method and protecting device for flexible DC power transmission line |
| CN106443540A (en) * | 2016-09-06 | 2017-02-22 | 昆明理工大学 | Traveling wave single-terminal distance measurement device test method based on simulation data |
| CN108107319A (en) * | 2017-11-27 | 2018-06-01 | 山东大学 | A kind of multiterminal flexible direct current electric network fault localization method and system |
| CN110912091A (en) * | 2019-12-03 | 2020-03-24 | 西安交通大学 | Single-ended traveling wave ultra-high speed protection system and method for flexible direct current transmission line |
| CN111157940A (en) * | 2020-01-09 | 2020-05-15 | 广东电科院能源技术有限责任公司 | Flexible direct-current electronic transformer simulation system |
-
2020
- 2020-09-30 CN CN202011066512.XA patent/CN112285458A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129001A (en) * | 2011-01-07 | 2011-07-20 | 山东大学 | Digital relay protection device testing system and method |
| CN204008958U (en) * | 2014-06-03 | 2014-12-10 | 国家电网公司 | Intelligent transformer station transmission line travelling wave fault location device |
| CN105738759A (en) * | 2014-12-12 | 2016-07-06 | 国家电网公司 | Transient recording data-based direct-current power transmission line fault locating method |
| CN205231703U (en) * | 2015-11-30 | 2016-05-11 | 安徽理工大学 | System based on optics current transformer improve reliability of relay protection |
| CN106443540A (en) * | 2016-09-06 | 2017-02-22 | 昆明理工大学 | Traveling wave single-terminal distance measurement device test method based on simulation data |
| CN106385015A (en) * | 2016-11-11 | 2017-02-08 | 清华大学 | Protecting method and protecting device for flexible DC power transmission line |
| CN108107319A (en) * | 2017-11-27 | 2018-06-01 | 山东大学 | A kind of multiterminal flexible direct current electric network fault localization method and system |
| CN110912091A (en) * | 2019-12-03 | 2020-03-24 | 西安交通大学 | Single-ended traveling wave ultra-high speed protection system and method for flexible direct current transmission line |
| CN111157940A (en) * | 2020-01-09 | 2020-05-15 | 广东电科院能源技术有限责任公司 | Flexible direct-current electronic transformer simulation system |
Non-Patent Citations (3)
| Title |
|---|
| 董新洲 等: "《暂态行波保护测试仪》", 《电力自动化设备》, vol. 37, no. 2, pages 192 - 198 * |
| 董新洲 等: "暂态行波保护测试仪", 电力自动化设备, vol. 37, no. 2, pages 192 - 198 * |
| 青岛英谷教育科技股份有限公司: "《云计算与大数据概论》", vol. 2017, 31 August 2017, 西安电子科技大学出版社, pages: 79 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101149416B (en) | Power cable insulation state monitoring and life span management system | |
| CN101799487B (en) | Method and equipment for detecting power supply voltage fluctuation | |
| CN109084835A (en) | A kind of electric machines test and remote monitoring system based on PXIe test platform | |
| CN103512619A (en) | System and method for intelligently monitoring state information of transformer | |
| CN201464092U (en) | Wireless stress tester of hydroelectric generator set | |
| CN101794503B (en) | Electric energy balance monitoring system for transformer station | |
| CN104090252A (en) | Comprehensive detecting system and method for cable type fault indicator | |
| CN112285459B (en) | Flexible direct current line traveling wave protection test method and computer readable storage medium | |
| CN109584103A (en) | A kind of electric network fault fast reaction and educated decisions support system | |
| CN109490816B (en) | Split type metering automation terminal fault detection equipment and detection method thereof | |
| CN1715928A (en) | Remote on-line analytic detector for conductivity, pH value and oxygen dissolving value | |
| CN101968388B (en) | Wireless stress tester of hydro-power generating unit | |
| CN110297796B (en) | Real-time analysis system and method for multi-serial port communication protocol of energy storage unit | |
| CN112285458A (en) | Flexible direct current line traveling wave protection testing device | |
| CN201477192U (en) | Digital wave-recording device of power generator transformer set/circuit | |
| CN212115364U (en) | Laboratory data intelligent acquisition and conversion system | |
| CN1414396A (en) | Method and device for real time on line detection of metering current mulual inductor malfunction | |
| CN108919155A (en) | A kind of communication means of equipment for monitoring power quality on-line monitoring and on-site proving | |
| CN115931246A (en) | Gas tightness detection and fault handling system and method for hydrogen-cooled generator | |
| CN111464562A (en) | Laboratory data intelligent acquisition and conversion system | |
| CN201742169U (en) | Digital real-time testing analyzer of secondary system in transformer station | |
| CN204807316U (en) | Signal conversion equipment of engine test usefulness | |
| CN109375139A (en) | A kind of device and method of automatic testing light fiber current mutual inductor | |
| CN110346746A (en) | Digital combining unit accuracy closed loop test method and system | |
| CN114137930B (en) | Test system and method for regional stability control system |
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 |