CN116466154B - Fault diagnosis method and device, storage medium and electronic equipment - Google Patents
Fault diagnosis method and device, storage medium and electronic equipment Download PDFInfo
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- CN116466154B CN116466154B CN202310295489.9A CN202310295489A CN116466154B CN 116466154 B CN116466154 B CN 116466154B CN 202310295489 A CN202310295489 A CN 202310295489A CN 116466154 B CN116466154 B CN 116466154B
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000003745 diagnosis Methods 0.000 title claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 66
- 238000012545 processing Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims description 98
- 230000008033 biological extinction Effects 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 12
- 230000001052 transient effect Effects 0.000 claims description 10
- 230000016507 interphase Effects 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 13
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- 238000013024 troubleshooting Methods 0.000 description 2
- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The disclosure relates to a fault diagnosis method, a device, a storage medium and electronic equipment, which are applied to a centralized control power station monitoring system, wherein the centralized control power station monitoring system comprises a centralized control power station monitoring module, a relay protection module and primary equipment, and the method comprises the following steps: acquiring monitoring data output by the centralized control power station monitoring module; under the condition that the monitoring data comprise the primary equipment fault alarm information, acquiring key data of the primary equipment and the relay protection module; determining the fault type of the primary equipment according to the key data; and determining a fault processing scheme of the primary equipment according to the fault type of the primary equipment. The scheme disclosed by the disclosure is beneficial to improving the timeliness and accuracy of power station fault treatment, so that the operation and maintenance efficiency of power station equipment is effectively improved, and the reliability and the economical efficiency of the operation of the power station equipment are further improved.
Description
Technical Field
The disclosure relates to the technical field of automatic control of power systems, in particular to a fault diagnosis method, a fault diagnosis device, a storage medium and electronic equipment.
Background
When the primary equipment fails, the centralized control power station monitoring system gives an alarm, and an operator on duty informs the operation and maintenance personnel to check the primary equipment, find out the failure position, and determine the failure type and the failure treatment scheme according to the experience of the operation and maintenance personnel. In the fault treatment process, operation and maintenance personnel need to spend a great deal of time, and also require certain experience of the operation and maintenance personnel, which is unfavorable for the timeliness and accuracy of power station maintenance and the reliability and economy of power station equipment operation.
Disclosure of Invention
In order to achieve the above object, the present disclosure provides a fault diagnosis method, a fault diagnosis device, a storage medium, and an electronic apparatus.
According to a first aspect of an embodiment of the present disclosure, a fault diagnosis method is provided, and the fault diagnosis method is applied to a centralized control power station monitoring system, where the centralized control power station monitoring system includes a centralized control power station monitoring module, a relay protection module and primary equipment, the centralized control power station monitoring module is used for monitoring an operation state of the primary equipment, and the relay protection module is used for controlling the operation state of the primary equipment, and the method includes:
acquiring monitoring data output by the centralized control power station monitoring module;
Under the condition that the monitoring data comprise the primary equipment fault alarm information, acquiring key data of the primary equipment and the relay protection module, wherein the key data comprise analog quantity and switching value of the primary equipment, and action information of the relay protection module, and the analog quantity comprises active power, voltage, current, frequency, zero sequence voltage and zero sequence current of the primary equipment; the switching value comprises switching state and reclosing action information; the information of the relay protection module comprises a protection action signal, a protection action result and a protection action time;
determining the fault type of the primary equipment according to the key data;
and determining a fault processing scheme of the primary equipment according to the fault type of the primary equipment.
Optionally, the determining the fault type of the primary device according to the key data includes:
acquiring preset fault logic data, wherein the preset fault logic data are used for representing the corresponding relation between different fault types and fault processing schemes;
and determining the key data according to preset fault logic data to determine the fault type of the primary equipment.
Optionally, the centralized control power station monitoring system further comprises a terminal, and the method further comprises:
and sending the fault processing scheme to the terminal so that the terminal outputs preset prompt information.
Optionally, the primary device includes a generator or a transformer, and determining the fault type of the primary device according to the key data includes:
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and under the condition that the zero sequence current of the generator is zero, the fault type is determined to be a first short circuit fault, and the first short circuit fault is used for representing a short circuit fault between a neutral point side current transformer of the generator and an end side current transformer of the generator or an inter-phase short circuit fault occurs in the generator;
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and the fault type is determined to be a second short-circuit fault under the condition that the zero sequence current of the generator is not zero, and the second short-circuit fault is used for representing the grounding short-circuit fault of the generator;
The key data comprises heavy gas protection action of the transformer, differential protection is not operated, the high-voltage side switch and the low-voltage side switch of the transformer are switched off instantaneously, active power, current and voltage of the transformer are reduced to zero, the fault type is determined to be a third short-circuit fault, and the third short-circuit fault is used for representing that the short-circuit fault occurs in the transformer.
Optionally, the determining the fault handling scheme of the primary device according to the fault type of the primary device includes:
under the condition that the fault type is determined to be the first short-circuit fault or the second short-circuit fault, determining that the fault treatment scheme is to check the running state of specified equipment or to check the zero lifting voltage of the generator;
in case that the fault type is determined to be the third short-circuit fault, the fault handling scheme is determined to be an assay for analyzing the composition of the transformer oil.
Optionally, the primary device further includes a power transmission line, and the determining the fault type of the primary device according to the key data further includes:
the key data comprise pilot protection action of the power transmission line, grounding distance I section protection action, and recovery of power transmission line active power, power transmission line voltage and power transmission line current in a specified range after reclosing of a switch, and the fault type is determined to be a first grounding fault, wherein the first grounding fault is used for representing that a single-phase transient grounding fault occurs in a first range from a current transformer of the power transmission line to the full length of the power transmission line;
The key data comprise pilot protection action, grounding distance I section protection action and zero active power, voltage and current of the power transmission line after reclosing action, and the fault type is determined to be a second grounding fault, wherein the second grounding fault is used for representing that single-phase permanent grounding fault occurs in the first range from the current transformer of the power transmission line to the whole length of the power transmission line;
recovering active power, voltage and current of the transmission line in a specified range after reclosing of a switch, determining that the fault type is a third ground fault, wherein the third ground fault is used for representing that a single-phase transient ground fault occurs in a second range from a current transformer on the opposite side of the transmission line to the full length of the transmission line;
and after the reclosing action, the active power, the voltage and the current of the power transmission line are all zero, the fault type is determined to be a fourth ground fault, and the fourth ground fault is used for representing that the single-phase permanent ground fault occurs in the second range from the current transformer on the opposite side of the power transmission line to the full length of the power transmission line.
Optionally, the primary device further includes a bus, and the determining the fault type of the primary device according to the key data further includes:
and when the key data comprise differential protection actions of the bus, the voltage of one phase line of the bus is reduced to zero from a rated value, the switch of the bus is instantaneously switched off, the zero sequence voltage of the bus is not zero, the fault type is determined to be a fifth ground fault, and the fifth ground fault is used for representing the ground fault of one phase line of the bus.
Optionally, the determining the fault handling scheme of the primary device according to the fault type of the primary device further includes:
in the case that the fault type is determined to be the first ground fault, the second ground fault, the third ground fault, the fourth ground fault or the fifth ground fault, determining a fault handling scheme to check a designated device and a secondary device detecting the designated device.
According to a second aspect of the embodiments of the present disclosure, there is provided a fault diagnosis apparatus applied to a centralized control power station monitoring system, the centralized control power station monitoring system including a centralized control power station monitoring module, a relay protection module, and a primary device, wherein the centralized control power station monitoring module is configured to monitor an operation state of the primary device, and the relay protection module is configured to control the operation state of the primary device, the apparatus includes:
The acquisition module is configured to acquire the monitoring data output by the centralized control power station monitoring module;
the first determining module is configured to collect key data of the primary equipment and the relay protection module under the condition that the monitoring data comprise the primary equipment fault alarm information, wherein the key data comprise analog quantity and switching quantity of the primary equipment, and action information of the relay protection module, and the analog quantity comprises active power, voltage, current, frequency, zero sequence voltage and zero sequence current of the primary equipment; the switching value comprises switching state and reclosing action information; the information of the relay protection module comprises a protection action signal, a protection action result and a protection action time;
a second determining module configured to determine a failure type of the primary device according to the critical data;
and a third determining module configured to determine a failure handling scheme of the primary device according to a failure type of the primary device.
Optionally, the second determining module is configured to:
acquiring preset fault logic data, wherein the preset fault logic data are used for representing the corresponding relation between different fault types and fault processing schemes;
And determining the key data according to preset fault logic data to determine the fault type of the primary equipment.
Optionally, the centralized control power station monitoring system further includes a terminal, and the apparatus further includes:
and the sending module is configured to send the fault processing scheme to the terminal so as to enable the terminal to output preset prompt information.
Optionally, the second determining module is configured to:
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and under the condition that the zero sequence current of the generator is zero, the fault type is determined to be a first short circuit fault, and the first short circuit fault is used for representing a short circuit fault between a neutral point side current transformer of the generator and an end side current transformer of the generator or an inter-phase short circuit fault occurs in the generator;
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and the fault type is determined to be a second short-circuit fault under the condition that the zero sequence current of the generator is not zero, and the second short-circuit fault is used for representing the grounding short-circuit fault of the generator;
The key data comprises heavy gas protection action of the transformer, differential protection is not operated, the high-voltage side switch and the low-voltage side switch of the transformer are switched off instantaneously, active power, current and voltage of the transformer are reduced to zero, the fault type is determined to be a third short-circuit fault, and the third short-circuit fault is used for representing that the short-circuit fault occurs in the transformer.
Optionally, the third determining module is configured to:
under the condition that the fault type is determined to be the first short-circuit fault or the second short-circuit fault, determining that the fault treatment scheme is to check the running state of specified equipment or to check the zero lifting voltage of the generator;
in case that the fault type is determined to be the third short-circuit fault, the fault handling scheme is determined to be an assay for analyzing the composition of the transformer oil.
Optionally, the second determining module is configured to:
the key data comprise pilot protection action of the power transmission line, grounding distance I section protection action, and recovery of power transmission line active power, power transmission line voltage and power transmission line current in a specified range after reclosing of a switch, and the fault type is determined to be a first grounding fault, wherein the first grounding fault is used for representing that a single-phase transient grounding fault occurs in a first range from a current transformer of the power transmission line to the full length of the power transmission line;
The key data comprise pilot protection action, grounding distance I section protection action and zero active power, voltage and current of the power transmission line after reclosing action, and the fault type is determined to be a second grounding fault, wherein the second grounding fault is used for representing that single-phase permanent grounding fault occurs in the first range from the current transformer of the power transmission line to the whole length of the power transmission line;
recovering active power, voltage and current of the transmission line in a specified range after reclosing of a switch, determining that the fault type is a third ground fault, wherein the third ground fault is used for representing that a single-phase transient ground fault occurs in a second range from a current transformer on the opposite side of the transmission line to the full length of the transmission line;
and after the reclosing action, the active power, the voltage and the current of the power transmission line are all zero, the fault type is determined to be a fourth ground fault, and the fourth ground fault is used for representing that the single-phase permanent ground fault occurs in the second range from the current transformer on the opposite side of the power transmission line to the full length of the power transmission line.
Optionally, the second determining module is configured to:
and when the key data comprise differential protection actions of the bus, the voltage of one phase line of the bus is reduced to zero from a rated value, the switch of the bus is instantaneously switched off, the zero sequence voltage of the bus is not zero, the fault type is determined to be a fifth ground fault, and the fifth ground fault is used for representing the ground fault of one phase line of the bus.
Optionally, the third determining module is configured to:
in the case that the fault type is determined to be the first ground fault, the second ground fault, the third ground fault, the fourth ground fault or the fifth ground fault, determining a fault handling scheme to be to check a designated device and a secondary device detecting the designated device.
According to a third aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of the first aspect above.
According to a fourth aspect of embodiments of the present disclosure, there is provided an electronic device, comprising:
a memory having a computer program stored thereon;
A processor for executing the computer program in the memory to implement the steps of the method of the first aspect above.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: under the condition of determining primary equipment fault alarm, key data of primary equipment and a relay protection module are obtained from monitoring data output by a centralized control power station monitoring module, the fault type of the primary equipment is determined according to the key data, and a fault treatment scheme of the primary equipment is determined according to the fault type, so that timeliness and accuracy of power station fault treatment are improved, the operation and maintenance efficiency of the power station equipment is effectively improved, and the reliability and economy of operation of the power station equipment are further improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a fault diagnosis method according to an exemplary embodiment;
FIG. 2 is a flow chart of a fault diagnosis method according to the embodiment shown in FIG. 1;
FIG. 3 is a block diagram of a fault diagnosis apparatus according to an exemplary embodiment;
fig. 4 is a block diagram of a fault diagnosis apparatus according to the embodiment shown in fig. 3;
FIG. 5 is a block diagram of an electronic device, shown in accordance with an exemplary embodiment;
fig. 6 is a block diagram of an electronic device, according to an example embodiment.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
It should be noted that, all actions for acquiring signals, information or data in the present disclosure are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
Before detailed description of the specific embodiments of the present disclosure is given, the following description is first given to an application scenario of the present disclosure, and the present disclosure may be applied to a centralized control power station monitoring system, where the centralized control power station monitoring system includes a centralized control power station monitoring module, a relay protection module, and a primary device, where the centralized control power station monitoring module is used to monitor an operation state of the primary device, and the relay protection module is used to control the operation state of the primary device.
In order to solve the problems, the disclosure provides a fault diagnosis method, a device, a storage medium and an electronic device, wherein the fault diagnosis method acquires key data of primary equipment and a relay protection module from monitoring data output by a centralized control power station monitoring module under the condition of determining primary equipment fault alarm, determines the fault type of the primary equipment according to the key data, and determines a fault treatment scheme of the primary equipment according to the fault type, thereby being beneficial to improving timeliness and accuracy of power station fault treatment, effectively improving operation and maintenance efficiency of the power station equipment, and further improving operation reliability and economy of the power station equipment.
The technical scheme of the present disclosure is described in detail below in connection with specific embodiments.
Fig. 1 is a flowchart illustrating a fault diagnosis method applied to a centralized control power station monitoring system including a centralized control power station monitoring module for monitoring an operation state of primary equipment, a relay protection module for controlling the operation state of the primary equipment, and a primary equipment according to an exemplary embodiment, the fault diagnosis method may include the steps of:
In step S101, monitoring data output by a centralized control power station monitoring module is acquired.
In the step, the centralized control power station monitoring module acquires the power station equipment operation state information to acquire monitoring data by identifying the power station equipment operation state. The monitoring data may include data of normal operation and abnormal operation of the primary device and the secondary device.
In step S102, in the case that it is determined that the monitoring data includes the primary equipment failure alarm information, key data of the primary equipment and the relay protection module are collected.
The key data comprise the analog quantity and the switching value of the primary equipment, and the action information of the relay protection module. The analog quantity comprises active power, voltage, current, frequency, zero sequence voltage and zero sequence current of primary equipment; the switching value comprises switching state and reclosing action information; the information of the relay protection module comprises a protection action signal, a protection action result and a protection action time.
The primary device may include a generator, a transformer, a transmission line, a bus, a switch, or the like, and the reclosing operation information may be information indicating that the switch is reclosed in a short time after the switch is opened. The protection action signal may be that when the primary equipment fails, the relay protection module sends a protection action signal to the centralized control power station monitoring module after the protection action, for example, the generator differential protection action signal is sent to the centralized control power station monitoring module by the relay protection module. The protection action may be as a result that in case of failure of the primary device, the relay protection module protects the action to cause the circuit of the primary device to be opened, for example, in case of short-circuit failure of the generator, the generator differential protection action causes the output switch of the generator to be opened. The protection action time may be a time when the protection action causes the primary device to open a circuit.
In step 103, the failure type of the primary device is determined from the critical data.
In the step, preset fault logic data can be obtained, wherein the preset fault logic data are used for representing the corresponding relation between different fault types and fault processing schemes; and determining the fault type of the primary equipment according to the preset fault logic data. The preset fault logic data can be logic constants 0 and 1, logic operation AND and NOT, wherein the logic constants are used for representing the opening or closing state of the switch, the AND of the logic operation judges the fault type of the primary equipment according to the key data, and the NOT of the logic operation is used for representing the non-zero condition of the analog quantity of the primary equipment.
It should be noted that, in the case where the primary device includes a generator or a transformer, the above-described embodiment of determining the type of failure of the primary device according to the key data may be:
the key data comprises differential protection actions of the generator, an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and under the condition that zero sequence current of the generator is zero, the fault type is determined to be a first short circuit fault, and the first short circuit fault is used for representing a short circuit fault between a neutral point side current transformer of the generator and an end side current transformer of the generator or an inter-phase short circuit fault occurs in the generator.
The key data comprises differential protection actions of the generator, an output switch of the generator is switched off instantaneously and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are zero, and the fault type is determined to be a second short-circuit fault under the condition that the zero sequence current of the generator is not zero, and the second short-circuit fault is used for representing the grounding short-circuit fault of the generator.
The key data comprises heavy gas protection action of the transformer, differential protection is not operated, the high-voltage side switch and the low-voltage side switch of the transformer are switched off instantaneously, active power, current and voltage of the transformer are reduced to zero, the fault type is determined to be a third short circuit fault, and the third short circuit fault is used for representing that the short circuit fault occurs in the transformer.
By way of example, in the case where the primary device includes a generator transformer, the above-described embodiment of determining the type of failure of the primary device from the key data may also be the case as shown in table 1.
TABLE 1
It should be noted that, in the case where the primary device further includes a power transmission line, the above-described embodiment of determining the fault type of the primary device according to the key data may be:
the key data comprises pilot protection action of the power transmission line, grounding distance I section protection action, and after reclosing of the switch, restoring active power of the power transmission line, voltage of the power transmission line and current of the power transmission line in a specified range, determining the fault type as a first grounding fault, wherein the first grounding fault is used for representing that single-phase transient grounding faults occur in a first range from a current transformer of the power transmission line to the whole length of the power transmission line.
After the switch reclosing, the situation that the active power, the voltage and the current of the power transmission line in the designated range are recovered may be that the power transmission line fails, the relay protection module protects the switch, the active power, the voltage and the current of the power transmission line are all reduced to zero, and after the switch reclosing, the active power, the voltage and the current of the power transmission line are recovered in the designated range. The designated range can be the value range of the active power, the voltage and the current of the power transmission line when the power transmission line can normally transport the electric energy. The first range may be a range of less than 80% (20%, 32%, 40%, etc.) of the full length of the transmission line.
The key data comprises pilot protection action of the power transmission line, grounding distance I section protection action, active power, voltage and current of the power transmission line are all zero after reclosing action, the fault type is determined to be a second grounding fault, and the second grounding fault is used for representing that single-phase permanent grounding faults occur in a first range from a current transformer of the power transmission line to the whole length of the power transmission line.
After reclosing action, when the active power, voltage and current of the power transmission line are zero and the power transmission line fails, under the action of the relay protection module, the switch reclosing action enables the switch to reclose after the switch is disconnected, the fault in the power transmission line is not eliminated, the switch is disconnected again, and the active power, voltage and current of the power transmission line are reduced to zero.
Recovering the active power of the transmission line, the voltage of the transmission line and the current of the transmission line in a specified range after reclosing of the switch, determining that the fault type is a third grounding fault, wherein the third grounding fault is used for representing that a single-phase transient grounding fault occurs in a second range from a current transformer on the opposite side of the transmission line to the full length of the transmission line;
the second range may be a range smaller than 20% (3%, 10%, 17%, etc.) of the entire length of the transmission line, and the first range and the second range may be the same or different.
And after the reclosing action, the active power, the voltage and the current of the power transmission line are all zero, and the fault type is determined to be a fourth ground fault, wherein the fourth ground fault is used for representing that the single-phase permanent ground fault occurs in a second range from the opposite-side current transformer of the power transmission line to the full length of the power transmission line.
By way of example, the above-described embodiment of determining the type of failure of the primary device from the critical data may also be the case as shown in table 2:
TABLE 2
It should be noted that, in the case where the primary device further includes a bus, the above embodiment of determining the fault type of the primary device according to the key data may be:
The key data comprises differential protection actions of the bus, wherein the voltage of one phase line of the bus is reduced to zero from a rated value, the switch of the bus is switched off instantaneously, the zero sequence voltage of the bus is not zero, the fault type is determined to be a fifth ground fault, and the fifth ground fault is used for representing the ground fault of one phase line of the bus.
By way of example, the above-described embodiment of determining the type of failure of the primary device from the critical data may also be the case as shown in table 3:
TABLE 3 Table 3
In step 104, a failure handling scheme for the primary device is determined based on the failure type of the primary device.
In the step, under the condition that the fault type is determined to be the first short-circuit fault or the second short-circuit fault, the fault processing scheme is determined to be the operation state of the appointed equipment, or the zero lifting voltage inspection is carried out on the generator. In the case that the fault type is determined to be a third short-circuit fault, the fault handling scheme is determined to be the composition of the assay transformer oil. In the case that the fault type is determined to be a first ground fault, a second ground fault, a third ground fault, a fourth ground fault or a fifth ground fault, determining a fault handling scheme is checking a designated device and a secondary device detecting the designated device.
According to the technical scheme, under the condition that the fault alarm of the primary equipment is determined, key data of the primary equipment and the relay protection module are obtained from the monitoring data output by the centralized control power station monitoring module, the fault type of the primary equipment is determined according to the key data, and the fault processing scheme of the primary equipment is determined according to the fault type, so that the timeliness and the accuracy of power station fault processing are improved, the operation and maintenance efficiency of the power station equipment is effectively improved, and the running reliability and the running economy of the power station equipment are further improved.
FIG. 2 is a flow chart of a fault diagnosis method according to the embodiment shown in FIG. 1, where the centralized control power station monitoring system may further include a terminal, and after determining a fault handling scheme of the primary device according to a fault type of the primary device in step 104, the fault diagnosis method may further include:
in step 105, the fault handling scheme is sent to the terminal, so that the terminal outputs a preset prompt message.
The terminal outputs preset prompt information to prompt operation and maintenance personnel to process the primary equipment fault scheme when the terminal receives the fault processing scheme. For example, the preset prompting information may be "the generator has a first short-circuit fault, and the processing scheme of the first short-circuit fault is to check the running state of the generator, or to check the zero lifting voltage of the generator, so as to ask the relevant operation staff to timely process the fault".
According to the technical scheme, the fault processing scheme is received through the terminal, so that operation and maintenance personnel can determine the fault equipment in time, the time for troubleshooting the fault equipment and the time for determining the fault processing scheme are reduced, and the fault processing efficiency is effectively improved.
Fig. 3 is a block diagram illustrating a fault diagnosis apparatus applied to a centralized control power station monitoring system including a centralized control power station monitoring module for monitoring an operation state of primary equipment, a relay protection module for controlling the operation state of the primary equipment, and a primary equipment according to an exemplary embodiment, and the apparatus may include:
an acquisition module 201, configured to acquire monitoring data output by the centralized control power station monitoring module;
a first determining module 202, configured to collect key data of the primary device and the relay protection module, where the key data includes an analog quantity and a switching value of the primary device, and action information of the relay protection module, where the analog quantity includes an active power, a voltage, a current, a frequency, a zero sequence voltage, and a zero sequence current of the primary device, when it is determined that the monitoring data includes the primary device fault alarm information; the switching value comprises switching state and reclosing action information; the information of the relay protection module comprises a protection action signal, a protection action result and a protection action time;
A second determining module 203 configured to determine a fault type of the primary device according to the critical data;
a third determination module 204 is configured to determine a failure handling scheme of the primary device based on the failure type of the primary device.
According to the technical scheme, under the condition that the fault alarm of the primary equipment is determined, key data of the primary equipment and the relay protection module are obtained from the monitoring data output by the centralized control power station monitoring module, the fault type of the primary equipment is determined according to the key data, and the fault processing scheme of the primary equipment is determined according to the fault type, so that the timeliness and the accuracy of power station fault processing are improved, the operation and maintenance efficiency of the power station equipment is effectively improved, and the running reliability and the running economy of the power station equipment are further improved.
FIG. 4 is a block diagram of a fault diagnosis apparatus according to the embodiment shown in FIG. 3, the centralized control plant monitoring system further comprising a terminal, the apparatus further comprising:
and the sending module 205 is configured to send the fault handling scheme to the terminal, so that the terminal outputs preset prompt information.
According to the technical scheme, operation and maintenance personnel can determine the fault equipment in time, the time for troubleshooting the fault equipment and the time for determining the fault processing scheme are reduced, and the fault processing efficiency is effectively improved.
Optionally, the second determining module 203 is configured to:
acquiring preset fault logic data, wherein the preset fault logic data are used for representing the corresponding relation between different fault types and fault processing schemes;
and determining the key data according to preset fault logic data to determine the fault type of the primary equipment.
Optionally, the second determining module 203 is configured to:
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and under the condition that the zero sequence current of the generator is zero, the fault type is determined to be a first short circuit fault, and the first short circuit fault is used for representing a short circuit fault between a neutral point side current transformer of the generator and an end side current transformer of the generator or an inter-phase short circuit fault occurs in the generator;
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and the fault type is determined to be a second short-circuit fault under the condition that the zero sequence current of the generator is not zero, and the second short-circuit fault is used for representing the grounding short-circuit fault of the generator;
The key data comprises heavy gas protection action of the transformer, differential protection is not operated, the high-voltage side switch and the low-voltage side switch of the transformer are switched off instantaneously, active power, current and voltage of the transformer are reduced to zero, the fault type is determined to be a third short-circuit fault, and the third short-circuit fault is used for representing that the short-circuit fault occurs in the transformer.
Optionally, the third determining module 204 is configured to:
under the condition that the fault type is determined to be the first short-circuit fault or the second short-circuit fault, determining that the fault treatment scheme is to check the running state of specified equipment or to check the zero lifting voltage of the generator;
in case that the fault type is determined to be the third short-circuit fault, the fault handling scheme is determined to be an assay for analyzing the composition of the transformer oil.
Optionally, the second determining module 203 is configured to:
the key data comprise pilot protection action of the power transmission line, grounding distance I section protection action, and recovery of power transmission line active power, power transmission line voltage and power transmission line current in a specified range after reclosing of a switch, and the fault type is determined to be a first grounding fault, wherein the first grounding fault is used for representing that a single-phase transient grounding fault occurs in a first range from a current transformer of the power transmission line to the full length of the power transmission line;
The key data comprise pilot protection action, grounding distance I section protection action and zero active power, voltage and current of the power transmission line after reclosing action, and the fault type is determined to be a second grounding fault, wherein the second grounding fault is used for representing that single-phase permanent grounding fault occurs in the first range from the current transformer of the power transmission line to the whole length of the power transmission line;
recovering active power, voltage and current of the transmission line in a specified range after reclosing of a switch, determining that the fault type is a third ground fault, wherein the third ground fault is used for representing that a single-phase transient ground fault occurs in a second range from a current transformer on the opposite side of the transmission line to the full length of the transmission line;
and after the reclosing action, the active power, the voltage and the current of the power transmission line are all zero, the fault type is determined to be a fourth ground fault, and the fourth ground fault is used for representing that the single-phase permanent ground fault occurs in the second range from the current transformer on the opposite side of the power transmission line to the full length of the power transmission line.
Optionally, the second determining module 203 is configured to:
and when the key data comprise differential protection actions of the bus, the voltage of one phase line of the bus is reduced to zero from a rated value, the switch of the bus is instantaneously switched off, the zero sequence voltage of the bus is not zero, the fault type is determined to be a fifth ground fault, and the fifth ground fault is used for representing the ground fault of one phase line of the bus.
Optionally, the third determining module 204 is configured to:
in the case that the fault type is determined to be the first ground fault, the second ground fault, the third ground fault, the fourth ground fault or the fifth ground fault, determining a fault handling scheme to be to check a designated device and a secondary device detecting the designated device.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 5 is a block diagram of an electronic device, according to an example embodiment. As shown in fig. 5, the electronic device 500 may include: a processor 501, a memory 502. The electronic device 500 may also include one or more of a multimedia sender 503, an input/output (I/O) interface 504, and a communication sender 505.
Wherein the processor 501 is configured to control the overall operation of the electronic device 500 to perform all or part of the steps of the fault diagnosis method described above. The memory 502 is used to store various types of data to support operation at the electronic device 500, which may include, for example, instructions for any application or method operating on the electronic device 500, as well as application-related data, such as contact data, messages sent and received, pictures, audio, video, and so forth. The Memory 502 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as static random access Memory (Static Random Access Memory, SRAM for short), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM for short), programmable Read-Only Memory (Programmable Read-Only Memory, PROM for short), read-Only Memory (ROM for short), magnetic Memory, flash Memory, magnetic disk, or optical disk. The multimedia hair 503 may include a screen and an audio hair. Wherein the screen may be, for example, a touch screen, the audio transmitter being adapted to output and/or input audio signals. For example, the audio transmitter may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 502 or transmitted through the communication sender 505. The audio transmitter further comprises at least one speaker for outputting audio signals. The I/O interface 504 provides an interface between the processor 501 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication sender 505 is used for wired or wireless communication between the electronic device 500 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near Field Communication, NFC for short), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited herein. The corresponding communication sender 505 may thus comprise: wi-Fi module, bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic device 500 may be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), digital signal processors (Digital Signal Processor, abbreviated as DSP), digital signal processing devices (Digital Signal Processing Device, abbreviated as DSPD), programmable logic devices (Programmable Logic Device, abbreviated as PLD), field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGA), controllers, microcontrollers, microprocessors, or other electronic components for performing the fault diagnosis methods described above.
In another exemplary embodiment, a computer readable storage medium is also provided, comprising program instructions which, when executed by a processor, implement the steps of the fault diagnosis method described above. For example, the computer readable storage medium may be the memory 502 including program instructions described above, which are executable by the processor 501 of the electronic device 500 to perform the fault diagnosis method described above.
Fig. 6 is a block diagram of an electronic device, according to an example embodiment. For example, the electronic device 600 may be provided as a server. Referring to fig. 6, an electronic device 600 includes a processor 601, which may be one or more in number, and a memory 602 for storing a computer program executable by the processor 601. The computer program stored in the memory 602 may include one or more modules each corresponding to an instruction. Further, the processor 601 may be configured to execute the computer program to perform the fault diagnosis method described above.
In addition, the electronic device 600 may also include a power transmitter 603 and a communication transmitter 604, the power transmitter 603 may be configured to perform power management of the electronic device 600, and the communication transmitter 604 may be configured to enable communication of the electronic device 600, e.g., wired or wireless communication. In addition, the electronic device 600 may also include an input/output (I/O) interface 605. The electronic device 600 may operate based on an operating system stored in the memory 602.
In another exemplary embodiment, a computer readable storage medium is also provided, comprising program instructions which, when executed by a processor, implement the steps of the fault diagnosis method described above. For example, the non-transitory computer readable storage medium may be the memory 602 including program instructions described above that are executable by the processor 601 of the electronic device 600 to perform the fault diagnosis method described above.
In another exemplary embodiment, a computer program product is also provided, comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described fault diagnosis method when executed by the programmable apparatus.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, each of the specific features described in the above embodiments may be combined in any suitable manner without contradiction, and various possible combining manners are not described in the present disclosure to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the present disclosure may be made without departing from the spirit of the present disclosure, which should also be considered as the disclosure of the present disclosure.
Claims (10)
1. The utility model provides a fault diagnosis method, characterized by is applied to centralized control power station monitored control system, centralized control power station monitored control system includes centralized control power station monitoring module, relay protection module and primary equipment, wherein, centralized control power station monitoring module is used for the operation state of control primary equipment, relay protection module is used for controlling the operation state of primary equipment, the method includes:
Acquiring monitoring data output by the centralized control power station monitoring module;
under the condition that the monitoring data comprise the primary equipment fault alarm information, acquiring key data of the primary equipment and the relay protection module, wherein the key data comprise action information of the relay protection module, analog quantity and switching value of the primary equipment, and the analog quantity comprises active power, voltage, current, frequency, zero sequence voltage and zero sequence current of the primary equipment; the switching value comprises switching state and reclosing action information; the action information of the relay protection module comprises a protection action signal, a protection action result and a protection action time;
determining the fault type of the primary equipment according to the key data;
determining a fault processing scheme of the primary equipment according to the fault type of the primary equipment;
the primary device comprises a generator and a transformer, and the determining the fault type of the primary device according to the key data comprises the following steps:
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and under the condition that the zero sequence current of the generator is zero, the fault type is determined to be a first short circuit fault, and the first short circuit fault is used for representing a short circuit fault between a neutral point side current transformer of the generator and an end side current transformer of the generator or an inter-phase short circuit fault occurs in the generator;
The key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and the fault type is determined to be a second short-circuit fault under the condition that the zero sequence current of the generator is not zero, and the second short-circuit fault is used for representing the grounding short-circuit fault of the generator;
the key data comprises heavy gas protection action of the transformer, differential protection is not operated, the high-voltage side switch and the low-voltage side switch of the transformer are switched off instantaneously, active power, current and voltage of the transformer are reduced to zero, the fault type is determined to be a third short-circuit fault, and the third short-circuit fault is used for representing that the short-circuit fault occurs in the transformer.
2. The method of claim 1, wherein determining a failure handling scheme for the primary device based on a failure type of the primary device comprises:
acquiring preset fault logic data, wherein the preset fault logic data are used for representing the corresponding relation between different fault types and fault processing schemes;
And determining the fault processing scheme corresponding to the fault type of the primary equipment according to preset fault logic data.
3. The method of claim 1, wherein the centralized control plant monitoring system further comprises a terminal, the method further comprising:
and sending the fault processing scheme to the terminal so that the terminal outputs preset prompt information.
4. The method of claim 1, wherein the determining a failure handling scheme of the primary device based on a failure type of the primary device comprises:
under the condition that the fault type is determined to be the first short-circuit fault or the second short-circuit fault, determining that the fault treatment scheme is to check the running state of specified equipment or to check the zero lifting voltage of the generator;
in case that the fault type is determined to be the third short-circuit fault, the fault handling scheme is determined to be an assay for analyzing the composition of the transformer oil.
5. The method of claim 1, wherein the primary device further comprises a power transmission line, the determining the failure type of the primary device based on the critical data further comprising:
the key data comprises pilot protection action of the power transmission line, grounding distance I section protection action, and recovery of power transmission line active power, power transmission line voltage and power transmission line current in a specified range after reclosing of a switch, wherein the fault type is determined to be a first grounding fault, and the first grounding fault is used for representing that single-phase transient grounding fault occurs from a current transformer of the power transmission line to the first range of the full length of the power transmission line;
The key data comprises pilot protection action, grounding distance I section protection action and zero active power, voltage and current of the power transmission line after reclosing action, and the fault type is determined to be a second grounding fault, wherein the second grounding fault is used for representing that single-phase permanent grounding fault occurs in the first range from the current transformer of the power transmission line to the whole length of the power transmission line;
the key data comprises pilot protection actions of the power transmission line, and after reclosing of a switch, active power, power transmission line voltage and power transmission line current of the power transmission line in a specified range are recovered, the fault type is determined to be a third ground fault, and the third ground fault is used for representing that a single-phase transient ground fault occurs in a second range from a current transformer on the opposite side of the power transmission line to the full length of the power transmission line;
the key data comprises pilot protection action of the power transmission line, active power, voltage and current of the power transmission line are all zero after reclosing action, the fault type is determined to be a fourth ground fault, and the fourth ground fault is used for representing that single-phase permanent ground faults occur in the second range from the current transformer on the opposite side of the power transmission line to the full length of the power transmission line.
6. The method of claim 5, wherein the primary device further comprises a bus, wherein the determining the type of failure of the primary device based on the critical data further comprises:
the key data comprises differential protection actions of the bus, wherein the voltage of one phase line of the bus is reduced to zero from a rated value, the switch of the bus is instantaneously switched off, the zero sequence voltage of the bus is not zero, the fault type is determined to be a fifth ground fault, and the fifth ground fault is used for representing the ground fault of one phase line of the bus.
7. The method of claim 6, wherein the determining a failure handling scheme for the primary device based on the failure type of the primary device further comprises:
in the case that the fault type is determined to be the first ground fault, the second ground fault, the third ground fault, the fourth ground fault or the fifth ground fault, determining a fault handling scheme to check a designated device and a secondary device detecting the designated device.
8. The utility model provides a fault diagnosis device, its characterized in that is applied to centralized control power station monitored control system, centralized control power station monitored control system includes centralized control power station monitoring module, relay protection module and primary equipment, wherein, centralized control power station monitoring module is used for the control the running state of primary equipment, relay protection module is used for controlling the running state of primary equipment, the device includes:
The acquisition module is configured to acquire the monitoring data output by the centralized control power station monitoring module;
the first determining module is configured to collect key data of the primary equipment and the relay protection module under the condition that the monitoring data comprise the primary equipment fault alarm information, wherein the key data comprise analog quantity and switching quantity of the primary equipment, and action information of the relay protection module, and the analog quantity comprises active power, voltage, current, frequency, zero sequence voltage and zero sequence current of the primary equipment; the switching value comprises switching state and reclosing action information; the action information of the relay protection module comprises a protection action signal, a protection action result and a protection action time;
a second determining module configured to determine a failure type of the primary device according to the critical data;
a third determining module configured to determine a failure handling scheme of the primary device according to a failure type of the primary device;
the primary device includes a generator and a transformer, the second determination module configured to:
the key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and under the condition that the zero sequence current of the generator is zero, the fault type is determined to be a first short circuit fault, and the first short circuit fault is used for representing a short circuit fault between a neutral point side current transformer of the generator and an end side current transformer of the generator or an inter-phase short circuit fault occurs in the generator;
The key data comprises differential protection actions of the generator, wherein an output switch of the generator is instantaneously switched off and a magnetic extinction switch is switched off, the output active power, the output current and the output voltage of the generator are reduced to zero, and the fault type is determined to be a second short-circuit fault under the condition that the zero sequence current of the generator is not zero, and the second short-circuit fault is used for representing the grounding short-circuit fault of the generator;
the key data comprises heavy gas protection action of the transformer, differential protection is not operated, the high-voltage side switch and the low-voltage side switch of the transformer are switched off instantaneously, active power, current and voltage of the transformer are reduced to zero, the fault type is determined to be a third short-circuit fault, and the third short-circuit fault is used for representing that the short-circuit fault occurs in the transformer.
9. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the steps of the method according to any of claims 1-7.
10. An electronic device, comprising:
a memory having a computer program stored thereon;
A processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-7.
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