CN112924794A - Transient event trigger wave recording testing device for ultrahigh voltage transformer substation - Google Patents
Transient event trigger wave recording testing device for ultrahigh voltage transformer substation Download PDFInfo
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- 238000003745 diagnosis Methods 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims abstract description 10
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- 230000009471 action Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The application discloses super high voltage substation triggers ripples testing arrangement with transient state incident relates to super high voltage substation testing arrangement technical field, includes: the device comprises an electrical measurement module, a signal processing module, a control module, an online wave recording module, an event triggering module and an event capturing module. Triggering a capture function after logic judgment to capture the transient event for fault diagnosis and analysis; the event judgment logic function is added, the technical effect that the protection point can achieve is that the data storage space of the online wave recording device can be released in time under a normal state, the hardware utilization efficiency is improved, transient event data can be stored in time under an abnormal state, and fault diagnosis and analysis are facilitated; the control module is matched with the event triggering module and the event capturing module; the module can achieve the technical effect that the control module can ensure that the event capturing module can record data in time through the trigger module, and can freely call and clear the data of the time capturing module.
Description
Technical Field
The application relates to the technical field of ultrahigh voltage transformer substation testing devices, in particular to a transient event triggering wave recording testing device for an ultrahigh voltage transformer substation.
Background
In an ultrahigh voltage transformer substation, when a high-voltage no-load bus is switched on and off, an extremely strong transient electromagnetic process is generated along the bus, and then strong electromagnetic interference is generated on secondary protection equipment based on microelectronics and computer control technology through space coupling and conduction coupling.
At present, a plurality of 110kV and 220kV junction substations in China are provided with fault recording devices, which provide conditions for timely obtaining a large amount of accurate fault recording data after a power grid fault occurs, the fault recording devices are generally used for matching with a data acquisition and supervisory control and data acquisition (SCADA) system to diagnose the power grid fault, the fault recording devices are used for acquiring electric quantity information of a power system in real time to analyze the power grid fault information, and the accuracy of fault diagnosis is improved.
However, the prior art has the following disadvantages: (1) the information of the wave recording device is redundant, the storage space cannot be released in time, and the storage space is occupied during normal operation; (2) however, the switching value information acquired by the SCADA is inaccurate, and it is difficult to efficiently and accurately identify the occurrence time of the fault only by the fault recording system.
Therefore, a transient event triggered wave recording testing device for an extra-high voltage substation needs to be provided.
Disclosure of Invention
The embodiment of the application provides a transient event triggers recording testing arrangement for super high voltage substation, includes: the system comprises an electrical measurement module, a signal processing module, a control module, an online wave recording module, an event triggering module and an event capturing module;
the electrical measurement module is used for acquiring voltage and current electrical quantity parameters on a high-voltage bus of the transformer substation;
after the electrical measurement module obtains voltage and current electrical quantity parameters on a high-voltage bus of the transformer substation, the parameters are subjected to filtering and AD sampling processing by the signal processing module and then are transmitted to the control module and the online wave recording module;
the control module is provided with a logic judgment module, and the logic judgment function is realized through the logic judgment module;
the logic judgment module automatically judges the waveform information of 20 cycles before the online wave recording module at a certain moment; if no abnormity exists, releasing the data of the first 10 cycles, if the logic judgment module detects an abnormal operation state, the control module starts a transient event capture function for the online wave recording module and the event trigger module, and receives the stored data of the online wave recording module at the moment under the action of the event trigger module;
after the fault is removed, the event triggering module receives the instruction reset of the logic judgment module, the transient event capture is finished, and the transient event is stored in the event capture module and then called by the control module to carry out fault diagnosis and analysis.
The embodiment of the application adopts the following technical scheme: the control module is also used for emptying the data of the event capturing module at regular time according to the desire of an operator.
The embodiment of the application adopts the following technical scheme: the event capturing module is used for capturing the transient event and receiving the stored data of the online wave recording module when the transient event occurs.
The embodiment of the application adopts the following technical scheme: the event capturing module comprises a detection unit and a result processing unit;
the detection unit is used for detecting whether the event trigger module triggers the event capture module to start the transient event capture function or not and whether the event trigger module receives the instruction reset of the logic judgment module after the fault is cut off or not;
the result processing unit is used for adding the detection judgment result of the detection unit into the stored data.
The embodiment of the application adopts the following technical scheme: the storage module is used for receiving the storage data of the online wave recording module during the transient event;
the standby storage module is used for storing data exceeding the storage capacity of the storage module.
The embodiment of the application adopts the following technical scheme: the spare storage module is set to be a flash memory hard disk device and a traditional mechanical hard disk device, and the capacity of the spare storage module is at least 2 TB.
The embodiment of the application adopts the following technical scheme: the power supply module is used for supplying power to the transient event triggering wave recording testing device, and the electrical measurement module, the signal processing module, the control module, the online wave recording module, the event triggering module and the event capturing module are electrically connected to the power supply module.
The embodiment of the application adopts the following technical scheme: the power supply module is set to be a 0-120V and 5A constant-current voltage-stabilizing direct-current power supply.
The embodiment of the application adopts the following technical scheme: and a standby power supply module is arranged in the power supply module.
The embodiment of the application adopts the following technical scheme: the standby power supply module is set as a UPS uninterrupted power supply with power of at least 10kw and capable of delaying for 90 minutes.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
1. the method has the function of capturing transient events during online monitoring and abnormal operation of the operation state of the high-voltage bus of the transformer substation; the logic judgment function of the control module is utilized to realize the data storage and release of the transient event trigger wave recording test device, and the data storage and release are used for real-time monitoring and fault diagnosis of the power system; the transient event triggering wave recording testing device for the ultrahigh voltage transformer substation can timely release the memory occupied by the wave recording in a normal state; an abnormal state self-diagnosis function is added on the basis of the original wave recording system, and the capture function is triggered after logic judgment to realize the capture of transient events for fault diagnosis and analysis;
2. the event judgment logic function is added, the technical effect that the protection point can achieve is that the data storage space of the online wave recording device can be released in time under a normal state, the hardware utilization efficiency is improved, transient event data can be stored in time under an abnormal state, and fault diagnosis and analysis are facilitated;
3. the control module is matched with the event triggering module and the event capturing module; the module can achieve the technical effect that the control module can ensure that the event capturing module can record data in time through the trigger module, and can freely call and clear the data of the time capturing module.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of the transient event triggered wave recording testing device for the ultra-high voltage substation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Examples
The utility model provides an ultra-high voltage substation triggers ripples testing arrangement with transient event, includes: the system comprises an electrical measurement module, a signal processing module, a control module, an online wave recording module, an event triggering module and an event capturing module;
the electrical measurement module is used for acquiring voltage and current electrical quantity parameters on a high-voltage bus of the transformer substation;
after the electrical measurement module obtains voltage and current electrical quantity parameters on a high-voltage bus of the transformer substation, the parameters are subjected to filtering and AD sampling processing by the signal processing module and then are transmitted to the control module and the online wave recording module;
the control module is provided with a logic judgment module, and the logic judgment function is realized through the logic judgment module;
the logic judgment module automatically judges the waveform information of 20 cycles before the online wave recording module at a certain moment; if no abnormity exists, releasing the data of the first 10 cycles, if the logic judgment module detects an abnormal operation state, the control module starts a transient event capture function for the online wave recording module and the event trigger module, and receives the stored data of the online wave recording module at the moment under the action of the event trigger module;
after the fault is removed, the event triggering module receives the instruction reset of the logic judgment module, the transient event capture is finished, and the transient event is stored in the event capture module and then called by the control module to carry out fault diagnosis and analysis.
The control module is also used for emptying the data of the event capturing module at regular time according to the desire of an operator.
The event capturing module is used for capturing the transient event and receiving the stored data of the online wave recording module when the transient event occurs.
The event capturing module comprises a detection unit and a result processing unit;
the detection unit is used for detecting whether the event trigger module triggers the event capture module to start the transient event capture function or not and whether the event trigger module receives the instruction reset of the logic judgment module after the fault is cut off or not;
the result processing unit is used for adding the detection judgment result of the detection unit into the stored data. The storage module is used for receiving the storage data of the online wave recording module during the transient event; the standby storage module is used for storing data exceeding the storage capacity of the storage module; the spare storage module is set to be a flash memory hard disk device and a traditional mechanical hard disk device, and the capacity of the spare storage module is at least 2 TB.
The power supply module is used for supplying power to the transient event triggering wave recording testing device, and the electrical measurement module, the signal processing module, the control module, the online wave recording module, the event triggering module and the event capturing module are electrically connected to the power supply module.
The power supply module is set to be a 0-120V and 5A constant-current voltage-stabilizing direct-current power supply; a standby power supply module is arranged in the power supply module; the standby power supply module is set as a UPS uninterrupted power supply with power of at least 10kw and capable of delaying for 90 minutes.
In summary, the following steps: the method has the function of capturing transient events during online monitoring and abnormal operation of the operation state of the high-voltage bus of the transformer substation; the logic judgment function of the control module is utilized to realize the data storage and release of the transient event trigger wave recording test device, and the data storage and release are used for real-time monitoring and fault diagnosis of the power system; the transient event triggering wave recording testing device for the ultrahigh voltage transformer substation can timely release the memory occupied by the wave recording in a normal state; an abnormal state self-diagnosis function is added on the basis of the original wave recording system, and the capture function is triggered after logic judgment to realize the capture of transient events for fault diagnosis and analysis;
the event judgment logic function is added, the technical effect that the protection point can achieve is that the data storage space of the online wave recording device can be released in time under a normal state, the hardware utilization efficiency is improved, transient event data can be stored in time under an abnormal state, and fault diagnosis and analysis are facilitated;
the control module is matched with the event triggering module and the event capturing module; the module can achieve the technical effect that the control module can ensure that the event capturing module can record data in time through the trigger module, and can freely call and clear the data of the time capturing module.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The utility model provides an ultra-high voltage substation triggers ripples testing arrangement with transient event, its characterized in that includes: the system comprises an electrical measurement module, a signal processing module, a control module, an online wave recording module, an event triggering module and an event capturing module;
the electrical measurement module is used for acquiring voltage and current electrical quantity parameters on a high-voltage bus of the transformer substation;
after the electrical measurement module obtains voltage and current electrical quantity parameters on a high-voltage bus of the transformer substation, the parameters are subjected to filtering and AD sampling processing by the signal processing module and then are transmitted to the control module and the online wave recording module;
the control module is provided with a logic judgment module, and the logic judgment function is realized through the logic judgment module;
the logic judgment module automatically judges the waveform information of 20 cycles before the online wave recording module at a certain moment; if no abnormity exists, releasing the data of the first 10 cycles, if the logic judgment module detects an abnormal operation state, the control module starts a transient event capture function for the online wave recording module and the event trigger module, and receives the stored data of the online wave recording module at the moment under the action of the event trigger module;
after the fault is removed, the event triggering module receives the instruction reset of the logic judgment module, the transient event capture is finished, and the transient event is stored in the event capture module and then called by the control module to carry out fault diagnosis and analysis.
2. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 1, wherein the control module is further used for emptying data of the event capturing module at regular time according to the will of an operator.
3. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 1, wherein the event capturing module is used for capturing a transient event and receiving stored data of the online wave recording module when the transient event occurs.
4. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 3, wherein the event capturing module comprises a detection unit and a result processing unit;
the detection unit is used for detecting whether the event trigger module triggers the event capture module to start the transient event capture function or not and whether the event trigger module receives the instruction reset of the logic judgment module after the fault is cut off or not;
the result processing unit is used for adding the detection judgment result of the detection unit into the stored data.
5. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 1, further comprising a storage module and a standby storage module, wherein the storage module is used for receiving the stored data of the online wave recording module during the transient event;
the standby storage module is used for storing data exceeding the storage capacity of the storage module.
6. The transient event triggered wave recording test device for the extra-high voltage substation of claim 5, wherein the spare storage module is configured to be a flash hard disk device and a traditional mechanical hard disk device, and the capacity of the spare storage module is at least 2 TB.
7. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 1, further comprising a power supply module, wherein the power supply module is used for supplying power to the transient event triggered wave recording testing device, and the electrical measurement module, the signal processing module, the control module, the online wave recording module, the event triggering module and the event capturing module are electrically connected to the power supply module.
8. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 7, wherein the power supply module is set to be a 0-120V, 5A constant-current and voltage-stabilized direct-current power supply.
9. The transient event triggered wave recording testing device for the extra-high voltage substation of claim 8, wherein a standby power supply module is arranged in the power supply module.
10. The transient event triggered wave recording test device for the extra-high voltage substation of claim 9, wherein the standby power module is set as an UPS uninterruptible power supply with power of at least 10kw and capable of delaying for 90 minutes.
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