CN113140096B - Method, device, equipment and storage medium for monitoring and judging station loss of voltage - Google Patents
Method, device, equipment and storage medium for monitoring and judging station loss of voltage Download PDFInfo
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- CN113140096B CN113140096B CN202110443994.4A CN202110443994A CN113140096B CN 113140096 B CN113140096 B CN 113140096B CN 202110443994 A CN202110443994 A CN 202110443994A CN 113140096 B CN113140096 B CN 113140096B
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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Abstract
The invention discloses a method, a device, equipment and a storage medium for monitoring and judging station loss pressure. The station pressure loss monitoring and judging method comprises the following steps: acquiring system voltage of a plant station; determining whether the system voltage of the plant station meets a voltage loss judgment starting condition, wherein the voltage loss judgment starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time of the system voltage lower than the voltage loss threshold value exceeds a preset time; if yes, determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule when the plant station is not in a total station overhaul state, wherein the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds a preset duration, and the preset false alarm rule comprises telemetering abnormity and overhaul abnormity; and if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, sending out voltage loss alarm information. The invention solves the problem of low accuracy of the voltage loss alarm and reduces the condition of the station voltage loss error alarm.
Description
Technical Field
The embodiment of the invention relates to a plant station voltage loss monitoring and judging technology, in particular to a plant station voltage loss monitoring and judging method, a plant station voltage loss monitoring and judging device, plant station voltage loss monitoring and judging equipment and a storage medium.
Background
The OCS system is a scheduling automation system, which is a generic term for a system and devices thereof for measuring, monitoring, controlling, analyzing, and operating management of an electric power system, and is composed of a main station end, a plant station end system and devices thereof, which are connected via a communication channel. The main station end (namely a dispatching automation main station system) comprises a main network, a main station part of a distribution network automation system, a dispatching operation management system and the like and relevant infrastructure; the plant station end (i.e. the plant station automation system) comprises a power plant, a converter station, a transformer station, a serial compensation station, a switch station automation system (comprising data acquisition equipment such as a monitoring system, telecontrol equipment, network equipment, measurement and control equipment, a transmitter, synchronous equipment and the like and related secondary loops), synchronous phasor measurement equipment, a time synchronization system, equipment such as an alternating current uninterrupted power supply and the like and related infrastructure which provide information for a main station.
The total-station voltage loss of the transformer substation refers to the phenomenon that the bus voltage (excluding station power consumption and direct-current system voltage) of each voltage class of the transformer substation is zero due to failure in a power system. After the total station voltage loss occurs, all the power supply clients of the transformer substation lose voltage, all the power supply loads lose power, regional power failure events are caused, large economic loss is caused to the power failure clients, and bad negative effects are caused to the society.
According to the requirements of power safety accident emergency handling and survey handling regulations, the southern power grid company system department develops power safety event prejudgment and all monitoring function modules of a transformer substation in an EMS system of a master dispatching system in 2011, and provides effective support for real-time monitoring of power grid abnormal events. And the local dispatching master station system synchronously develops the station voltage loss monitoring function as a basic function of the local dispatching automation system, and after the station voltage loss is monitored according to the judgment logic of the total dispatching requirement, the information of the voltage loss is uploaded to a central dispatching system and then uploaded to a total dispatching EMS system.
For the purpose of the function monitoring accuracy, a work scheme for further improving the station voltage loss monitoring accuracy is issued by the southern network system operation department in 2014, the accuracy is required to be improved by means of optimizing a monitoring function, standardizing an overhaul operation flow, enhancing evaluation and the like, conditional units are encouraged to combine with the construction or modification of a main station system, the voltage loss detection function is continuously perfected, and the station voltage loss monitoring is realized by gradually adopting a program mode. According to the requirements of the scheme, a large amount of work is carried out by each unit, a certain promotion is achieved, but the distance really reflects the total station decompression requirement when an accident happens and has a larger difference. According to statistical data, 147 times of voltage loss monitoring alarm, 83 times of correct alarm, 62 times of false alarm and 2 times of missed alarm are carried out on the whole power grid station of the southern power grid in 2020, and the annual correct rate is 56.46%. Wherein, the Guangdong is 57.75 percent, the Guangxi is 16.67 percent, the Yunnan is 64.15 percent, the Guizhou is 22.22 percent, and the Hainan is 62.5 percent (data source: southern electric network automation monthly newspaper).
In the existing OCS system, the judgment is carried out according to the requirement of the south network total regulation simply and according to whether the station voltage meets the preset voltage loss rule, and the preset voltage loss rule is that the system voltage of the station is lower than the rated value by a preset percentage and lasts for a preset time. However, in practical application, more voltage loss false alarm situations still exist.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for monitoring and judging station loss of voltage, which are used for reducing the condition of station loss of voltage false alarm.
In a first aspect, an embodiment of the present invention provides a method for monitoring and determining a station loss of voltage, including:
acquiring system voltage of a plant station;
if so, determining whether the system voltage of the plant station meets a voltage loss judgment starting condition, wherein the voltage loss judgment starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time of the system voltage lower than the voltage loss threshold value exceeds a preset time;
when the plant station is not in a total station maintenance state, determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule, wherein the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds a preset duration, and the preset false alarm rule comprises telemetering abnormity and maintenance abnormity;
and if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, sending out voltage loss alarm information.
In an optional embodiment of the present invention, the determining whether the system voltage of the plant station meets the condition of determining the start of the loss of voltage includes:
determining the change direction and the change rate of the system voltage within a preset monitoring time;
and if the change direction of the system voltage is downward, the change rate meets a preset change rate range and the current voltage value of the system voltage is smaller than the voltage loss threshold, determining that the system voltage meets the voltage loss judgment starting condition, wherein the voltage loss threshold is determined based on a preset percentage of a rated value.
In an optional embodiment of the invention, the system voltage comprises a bus voltage of each section in the system;
the determining the change direction and the change rate of the system voltage comprises: determining the change direction and the change rate of the voltage of each section of bus;
correspondingly, if the change direction of the system voltage is downward, the change rate meets the preset change rate range, and the current voltage value of the system voltage is smaller than the voltage-loss threshold, it is determined that the system voltage meets the voltage-loss judgment starting condition, which includes:
and if the change direction of the voltage of any section of bus is downward, the change rate meets a preset change rate range, and the current voltage value of the system voltage is smaller than the voltage loss threshold, determining that the system voltage meets the voltage loss judgment starting condition.
In an optional embodiment of the present invention, the determining whether the system voltage meets a preset false alarm rule includes:
acquiring telemetering data of the plant to the system;
and if the telemetering data are all 0, determining that the system voltage accords with a preset false alarm rule.
In an optional embodiment of the present invention, the determining whether the system voltage meets a preset false alarm rule includes:
when the system voltage is lower than a voltage loss threshold value, determining whether the acquisition time interval of the telemetering data of the system is greater than a preset interval time or not, and not receiving an accident signal, wherein the accident signal comprises an accident brake-off signal;
and if so, determining that the system voltage conforms to the preset false alarm rule.
In an optional embodiment of the present invention, if the system voltage meets the preset no-voltage rule and does not meet the preset false alarm rule, the sending out the no-voltage alarm information includes:
if the system voltage conforms to the preset no-voltage rule and does not conform to the preset false alarm rule, calling and displaying a manual confirmation window, and counting down;
if the correct confirmation information is received based on the manual confirmation window before the countdown is finished, sending out the voltage-loss warning information,
if the information for confirming the false alarm is received based on the manual confirmation window before the countdown is finished, forming false alarm data and storing the false alarm data into a false alarm database;
and if the countdown is finished and the feedback information of the manual confirmation window is not received, sending out the voltage loss warning information.
In an optional embodiment of the present invention, after determining whether the system voltage of the plant station meets the voltage loss judgment start condition, the method further includes:
detecting whether a plant station is provided with an identifier of a total station overhaul state, and if so, determining that the plant station is in the total station overhaul state;
if not, determining whether the number of sections of the bus voltage with the voltage value not equal to zero in the system voltage is 1;
if so, determining that the plant station is in a total station maintenance state and sending maintenance identification setting reminding information;
and if not, executing the step of determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule.
In a second aspect, an embodiment of the present invention further provides a plant station voltage loss monitoring and determining device, where the plant station voltage loss monitoring and determining device includes:
the acquisition module is used for acquiring the system voltage of the plant station;
the system comprises a starting condition determining module, a judging and starting module and a judging and starting module, wherein the starting condition determining module is used for determining whether the system voltage of the plant station accords with a voltage loss judging and starting condition, and the voltage loss judging and starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time lower than the voltage loss threshold value exceeds a preset duration time;
the system comprises a voltage loss determining module and a false alarm determining module, wherein the voltage loss determining module is used for determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule if the plant station is not in a total station maintenance state, the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds a preset duration, and the preset false alarm rule comprises telemetering abnormity and maintenance abnormity;
and the information sending module is used for sending out the voltage-loss warning information if the system voltage conforms to the preset voltage-loss rule and does not conform to the preset false alarm rule.
In a third aspect, an embodiment of the present invention further provides a computer device, where the computer device includes:
a memory, a processor, and a computer program stored on the memory and executable on the processor,
and when the processor executes the program, the station loss of voltage monitoring and judging method provided by any embodiment of the invention is realized.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer-readable storage medium includes:
when executed by the processor, the program implements the station loss of voltage monitoring and determining method of any embodiment of the present invention.
According to the invention, whether the system voltage accords with the preset no-voltage rule and the forecast rule is determined in the total station maintenance state, and no-voltage alarm information is sent even if the preset no-voltage rule is satisfied under the condition that the system voltage accords with the preset false alarm rule, wherein the forecast false alarm rule comprises the telemetering abnormity and the maintenance abnormity, so that the no-voltage false alarm conditions caused by the telemetering abnormity and the maintenance abnormity can be effectively eliminated. In addition, by adding the condition for judging the starting of the voltage loss, the plant station can be started to judge whether the voltage loss occurs or not only when the system voltage changes to be lower than the voltage loss threshold value within the preset time interval and the duration time lower than the voltage loss threshold value exceeds the preset time, and the condition of false alarm caused by repeated judgment that the system voltage is lower than the voltage loss threshold value for a long time is effectively avoided. In conclusion, the invention solves the problem of low accuracy of the voltage loss alarm and realizes the effect of reducing the occurrence of the condition of the voltage loss and the false alarm of the station.
Drawings
FIG. 1 is a flow chart of a method for monitoring and determining a station loss of voltage according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a station loss of voltage monitoring and determining method according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a station loss of voltage monitoring and determining method according to a third embodiment of the present invention;
fig. 4 is a block flow diagram of a plant station no-voltage monitoring and determining device in the fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a computer device in the fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a plant station voltage loss monitoring and determining method provided in an embodiment of the present invention, where the embodiment is applicable to a situation where a power grid performs voltage loss monitoring and determining on a transformer substation, and is particularly applicable to an OCS system, the method may be executed by a plant station voltage loss monitoring and determining device, and specifically includes the following steps:
and S110, acquiring the system voltage of the plant station.
Specifically, a plant refers to a power plant, a substation and the like in a power grid, the system voltage is the voltage of a power system in the power grid, and the power system refers to an electric energy production and consumption system formed by links such as the power plant, a power transmission and transformation line, a power supply and distribution substation and power utilization.
S120, determining whether the system voltage of the plant station meets a voltage loss judgment starting condition, wherein the voltage loss judgment starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time lower than the voltage loss threshold value exceeds a preset time. If yes, executing step S130, otherwise, returning to execute step S110, continuously acquiring the system voltage, and determining whether the voltage loss judgment starting condition is met.
In the embodiment, the voltage loss judgment starting condition is set, and whether the voltage of the system has the voltage loss condition is judged on the basis of meeting the voltage loss judgment starting condition, so that the condition of voltage loss misjudgment under the condition of not meeting the voltage loss judgment starting condition is avoided, the accuracy of voltage loss judgment is improved, and the voltage loss misjudgment is reduced. The voltage loss judgment starting condition comprises a judgment parameter of a change value, a change time interval and a duration of the system voltage.
In some optional embodiments, the determining whether the system voltage of the plant station meets the voltage loss judgment starting condition includes: and determining the change direction and the change rate of the system voltage within a preset monitoring time. The direction of change includes upward and downward, with upward representing an increase in the voltage value of the system voltage and downward representing a decrease in the voltage value of the system voltage. The change rate refers to the amount of change in the system voltage per unit time. And if the change direction of the system voltage is downward, the change rate meets a preset change rate range and the current voltage value of the system voltage is smaller than the voltage loss threshold, determining that the system voltage meets the voltage loss judgment starting condition, wherein the voltage loss threshold is determined based on a preset percentage of a rated value. In an alternative embodiment, the predetermined time interval may be 15S, the voltage loss threshold may be 30% of the rated voltage standard, and the predetermined time may be 10S.
The change direction of the system voltage is downward, which indicates that the system voltage is reduced, the preset change rate range is larger than the change rate of the system voltage in the normal working state of the plant station, the change rate meets the preset change rate range, which indicates that the system voltage is suddenly reduced, and at this moment, the voltage loss risk exists. Meanwhile, the judgment is started only when the change direction of the system voltage is downward, the change rate meets three conditions of a preset change rate range, the system voltage is smaller than a voltage loss threshold value and the duration time of the system voltage smaller than the voltage loss threshold value, whether the system voltage is smaller than the voltage loss threshold value is not simply judged, the judgment accuracy can be improved, repeated judgment that the system voltage is smaller than the voltage loss threshold value for a long time is avoided, the system voltage is converted into a total station maintenance state when the system voltage is smaller than the voltage loss threshold value, and the misjudgment that normal telemetering does not acquire normal data after the total station maintenance state is converted into a normal state is avoided.
Further, the system voltage typically includes the bus voltage of each segment in the system. The bus is a shared passage on which a plurality of devices are connected in a parallel branch mode, and the transformer substation is partially in a line-to-group structure, lacks a certain section of bus voltage value and is replaced by a high voltage value.
At this time, in the preset monitoring time, the change direction and the change rate of the system voltage are determined, including the change direction and the change rate of the bus voltage of each section in the preset monitoring time.
Correspondingly, if the change direction of the system voltage is downward, the change rate satisfies a preset change rate range and the current voltage value of the system voltage is smaller than the no-voltage threshold, determining that the system voltage meets the no-voltage judgment starting condition, including: and if the change direction of the voltage of any section of bus is downward, the change rate meets a preset change rate range, and the current voltage value of the system voltage is smaller than the voltage loss threshold, determining that the system voltage meets the voltage loss judgment starting condition.
In some optional embodiments, the system voltage variation and the variation direction may be continuously monitored in a preset time interval, and specifically, for any time, the system voltage variation in the preset time interval before the current time is monitored, whether the system voltage variation is decreased from the rated value to be below the voltage loss threshold value or not is determined, and whether the duration below the voltage loss threshold value is satisfied for a preset time period or not is determined. Further, the system voltage variation and the variation direction of each section of bus voltage in any preset time interval can be monitored, and if the system voltage variation of any section of bus voltage is decreased from a rated value to be lower than a voltage loss threshold value and the duration time of the bus voltage lower than the voltage loss threshold value meets a preset time length, the system voltage is determined to meet the voltage loss judgment starting condition.
The method has the advantages that the judgment is started when the bus voltage of a certain section of the plant station changes downwards, but not when all the bus voltages change downwards, the judgment is started, and the condition that the total station fails to report when the total station is in voltage loss due to accidental tripping in the power failure maintenance operation process of the primary equipment total station can be avoided.
S130, determining whether the system voltage accords with a preset voltage loss rule and a preset false alarm rule when the plant station is not in a total station maintenance state, wherein the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds the preset duration, and the preset false alarm rule comprises telemetering abnormity and maintenance abnormity.
The total station maintenance state refers to a state that the total station is in power failure maintenance, and due to power failure of the total station, the system voltage of the station is 0 at the moment. In this embodiment, when it is determined that the no-voltage judgment start condition is met, it is determined whether the plant station is in a total station maintenance state, and if so, the step of determining whether the system voltage meets a preset no-voltage rule and a preset false alarm rule is not required, so that a false alarm situation is avoided. Optionally, whether the plant station is in the total station overhaul state or not may be determined by recognizing a preset identifier or analyzing the system voltage.
The telemetering abnormity is the condition that the system voltage caused by the telemetering signal abnormity accords with the preset voltage loss rule, and the overhaul abnormity is the condition that the system voltage caused by the operation abnormity in the total station overhaul operation period accords with the preset voltage loss rule.
In addition, the determining whether the system voltage meets a preset false alarm rule includes: and acquiring the telemetering data of the station to the system. Specifically, the telemetry data includes various electrical quantities (voltage, current, power, and other quantities) and load flows of the plant power system.
And if the telemetering data are all 0, determining that the system voltage accords with a preset false alarm rule.
When the total station is in voltage loss due to the fact that an accident event exists, active telemetering data, reactive telemetering data, current telemetering data and the like of all primary equipment of electrical equipment in the station are 0, but direct-current voltage, oil temperature and gears still have numerical values, so that the telemetering data are all 0, namely the telemetering signals are abnormal, the phenomenon that the total station is in voltage loss due to the fact that the accident event exists is avoided, and the phenomenon belongs to false alarm. This false positive condition of telemetry data being all 0 is referred to as a telemetry anomaly.
Meanwhile, the determining whether the system voltage meets a preset false alarm rule further comprises: and when the system voltage is lower than the voltage loss threshold value, determining whether the acquisition time interval of the telemetering data of the system is greater than the preset interval time or not, and not receiving an accident signal, wherein the accident signal comprises an accident switching-off signal. And if so, determining that the system voltage conforms to the preset false alarm rule.
The voltage loss of each section of bus is sequentially spaced for a period of time, no accident signal exists in the whole network during the period, the voltage loss is judged to be the voltage loss of the whole station instead of the voltage loss of the whole station, the voltage is abnormal due to the maintenance instead of the voltage loss of the whole station due to the fact that an accident event exists, the phenomenon is false alarm, the false alarm condition caused by the whole station maintenance is called as maintenance abnormity, and in a specific embodiment, the preset interval time can be one minute. The accident opening signal is added for judgment, so that the condition that the total station is in voltage loss and the report is missed due to tripping inside and outside the station during the maintenance operation of the total station can be prevented.
In addition, for the detection accuracy, when the voltage of the detected bus is lower than the voltage loss threshold value in the first 20 minutes and the last 20 minutes of the starting detection judgment time, whether the acquisition time interval of the telemetering data of the system is greater than the preset interval time or not is determined, and an accident signal is not received, if so, the system voltage is determined to accord with the preset false alarm rule. If the factory station meets the condition of starting the voltage loss judgment due to total station overhaul, the situation that the bus voltage is lower than the voltage loss threshold value and the acquisition time interval of the telemetering data of the system is greater than the preset interval time is very likely to occur before and after the starting judgment for 20 minutes. Therefore, the detection is carried out in the time period, and the detection precision is high.
When the bus voltage accords with the preset voltage loss rule, the suspected voltage loss popup window prompt can be called and displayed to prompt operating personnel that the voltage loss condition possibly occurs in a plant station, and the operating personnel can timely handle the suspected voltage loss condition, so that adverse effects caused by the fact that the voltage loss condition of the whole plant station is not timely handled are prevented.
And S140, if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, sending out voltage loss alarm information.
The voltage loss alarm information may include voltage loss time, system voltage, plant station name, and the like, and the sent voltage loss alarm information is uploaded to the master regulator EMS system.
According to the technical scheme, whether the system voltage accords with the preset no-voltage rule and the prediction rule is determined in the total station maintenance state, no-voltage warning information can be sent even if the preset no-voltage rule is met under the condition that the system voltage accords with the preset false-alarm rule, the prediction false-alarm rule comprises the telemetering abnormity and the maintenance abnormity, and therefore the conditions of the no-voltage false-alarm caused by the telemetering abnormity and the maintenance abnormity can be effectively eliminated. In addition, by adding the condition for judging the starting of the voltage loss, the plant station can be started to judge whether the voltage loss occurs or not only when the system voltage changes to be lower than the voltage loss threshold value within the preset time interval and the duration time lower than the voltage loss threshold value exceeds the preset time, and the condition of false alarm caused by repeated judgment that the system voltage is lower than the voltage loss threshold value for a long time is effectively avoided. In conclusion, the invention solves the problem of low accuracy of the voltage loss alarm and realizes the effect of reducing the occurrence of the condition of the voltage loss and the false alarm of the station.
Example two
Fig. 2 is a flowchart of a plant pressure loss monitoring and determining method according to a second embodiment of the present invention, which is optimized based on the first embodiment. Optionally, if the system voltage conforms to the preset no-voltage rule and does not conform to the preset false alarm rule, sending no-voltage alarm information includes: if the system voltage conforms to the preset no-voltage rule and does not conform to the preset false alarm rule, calling and displaying a manual confirmation window, and counting down; if the correct confirmation information is received based on the manual confirmation window before the countdown is finished, sending out decompression alarm information, and if the false confirmation information is received based on the manual confirmation window before the countdown is finished, forming false alarm data and storing the false alarm data in a false alarm database; and if the countdown is finished and the feedback information of the manual confirmation window is not received, sending out the decompression alarm information.
The method comprises the following steps:
s210, acquiring system voltage of the plant station.
S220, determining whether the system voltage of the plant station meets the voltage loss judgment starting condition.
And S230, determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule or not when the plant station is not in a total station overhaul state.
And S240, if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, calling and displaying a manual confirmation window, and counting down.
The manual confirmation window can display specific voltage values, countdown time and the like of the system, and simultaneously, the manual confirmation window displays option buttons for confirming correctness and confirming false alarm for operators to select.
And S250, if the correct confirmation information is received based on the manual confirmation window before the countdown is finished, sending out the voltage loss warning information.
When the operator finds that the total station voltage loss condition is true by checking the system voltage, the operator can select an option button for confirming the correctness, so that the station can upload the voltage loss alarm information to the total dispatching EMS system.
And S260, if the false alarm confirming information is received based on the manual confirming window before the countdown is finished, forming false alarm data and storing the false alarm data into a false alarm database.
When the operator finds that the voltage loss condition belongs to false alarm by checking the system voltage displayed by the manual confirmation window, the operator can select an option button for confirming the false alarm, and the generated false alarm data can comprise information such as false alarm time, system voltage, operators and the like. The operator can check the false alarm data through the false alarm database to know the specific situation of the false alarm.
And S270, if the countdown is finished and the feedback information of the manual confirmation window is not received, sending out the decompression warning information.
Specifically, in the countdown process, if no operator handles the matter, the total station voltage loss condition is determined to be true, and voltage loss warning information is automatically sent.
According to the technical scheme, when the system voltage meets the preset voltage loss rule and does not meet the preset false alarm rule, the manual confirmation window is called and displayed, and countdown is carried out. If the operator confirms the false alarm during the countdown, the no-voltage alarm can be sent out, false alarm data can be formed and stored in a false alarm database, and the situation of reducing the plant no-voltage false alarm is effectively avoided through the manual judgment link. Meanwhile, if the operator confirms the pressure loss during the countdown, the pressure loss warning message can be sent in time. Finally, when the operator cannot confirm the voltage loss condition in time, if the countdown is finished, the voltage loss warning information can still be sent, and the condition that the voltage loss warning information is not sent in time due to untimely processing of the operator is effectively avoided.
EXAMPLE III
Fig. 3 is a flowchart of a plant pressure loss monitoring and determining method provided in the third embodiment of the present invention, and the third embodiment of the present invention is optimized based on the second embodiment. Optionally, after determining whether the system voltage of the plant station meets the voltage loss judgment starting condition, the method further includes: detecting whether a plant station is provided with an identifier of a total station overhaul state, and if so, determining that the plant station is in the total station overhaul state; if not, determining whether the number of sections of the bus voltage with the voltage value not equal to zero in the system voltage is 1; if so, determining that the plant station is in a total station maintenance state and sending maintenance identification setting reminding information; and if not, executing the step of determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule.
The method comprises the following steps:
s310, acquiring system voltage of the plant station.
And S320, determining whether the system voltage of the plant station meets the voltage loss judgment starting condition.
S330, detecting whether the plant station is provided with an identifier of the overhaul state of the whole station.
And if the plant station is provided with a total station overhaul identifier, determining that the plant station is in a total station overhaul state, and indicating that the system voltage reduction at the moment is a normal phenomenon caused by overhaul and does not belong to total station voltage loss caused by an accident, so that the voltage loss judgment process can be finished.
The identification of the maintenance state of the total station can be that the voltage loss signal of the total station is in a refresh prohibition state, the state of the voltage loss signal of the total station needs manual operation, and when the voltage loss signal of the plant station is in the refresh prohibition state, it shows that a dispatcher prohibits refresh before the total station maintenance and an automation worker prohibits refresh when the automation worker overhauls the station-side automation equipment, at this moment, the maintenance state of the total station is the maintenance state of the total station.
And if the plant station is not provided with the identifier of the total station overhaul state, executing the step S340.
And S340, determining whether the number of sections of the bus voltage with the voltage value not equal to zero in the system voltage is 1.
When the total station maintenance operation is nearly finished, the condition that only one section of bus is left with voltage exists, and when the total station is in voltage loss, all buses have no voltage, so that when the number of sections of bus voltage with a voltage value not equal to zero in system voltage is 1, the plant station is in a total station maintenance state.
And if the number of the sections of the bus voltage with the voltage value not being zero in the system voltage is 1, determining that the plant station is in a total station maintenance state, and executing the step S350.
And S350, sending out maintenance identification setting reminding information.
Specifically, the overhaul mark is provided with reminding information and can be reminded through a pop-up window, so that the situation that an operator forgets to adjust the plant station to the whole station overhaul state before the whole station overhaul operation starts is prevented, and the false alarm is caused.
If the number of segments of the bus voltage with the voltage value not zero in the system voltage is not 1, the bus voltage is not in a total station maintenance state at this time, and whether the total station is in voltage loss or not needs to be judged, so that the step S360 is executed.
And S360, determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule or not when the plant station is not in a total station overhaul state.
And S370, if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, calling and displaying a manual confirmation window, and counting down.
And S380, if the correct confirmation information is received based on the manual confirmation window before the countdown is finished, sending out the voltage loss warning information.
And S390, if the false alarm confirming information is received based on the manual confirming window before the countdown is finished, forming false alarm data and storing the false alarm data into a false alarm database.
And S400, if the countdown is finished and the feedback information of the manual confirmation window is not received, sending out the voltage loss warning information.
According to the technical scheme, through detecting the total station overhaul identification of the station, whether the number of the sections of the bus voltage with the voltage value not being zero in the system voltage is 1 is determined when the total station overhaul identification of the station is not detected, and when the number of the sections of the bus voltage with the voltage value not being zero in the system voltage is determined to be 1, the station is determined to be in a total station overhaul state, and the overhaul identification is sent to set reminding information. The sending of the maintenance and overhaul identification setting reminding information can prevent an operator from forgetting to adjust the station to the total station maintenance state before the total station maintenance operation starts, so that the false alarm is caused, the occurrence of the condition of false alarm of the station under the condition of no voltage is effectively reduced, and the problem of low accuracy of the no voltage alarm is solved.
Example four
Fig. 4 is a block flow diagram of a plant station voltage loss monitoring and determining device according to a fourth embodiment of the present invention, and as shown in fig. 4, the plant station voltage loss monitoring and determining device according to the fourth embodiment of the present invention may specifically include the following modules:
and the obtaining module 61 is configured to obtain a system voltage of the plant.
And the starting condition determining module 62 is configured to determine whether the system voltage of the plant station meets a voltage loss judgment starting condition, where the voltage loss judgment starting condition includes that the duration of the system voltage which is changed to be lower than a voltage loss threshold value within a preset time interval and is lower than the voltage loss threshold value exceeds a preset duration.
And a voltage loss determining module 63, configured to determine whether the system voltage meets preset voltage loss rules and preset false alarm rules if the plant station is not in a total station overhaul state, wherein the preset voltage loss rules include that the system voltage is lower than a voltage loss threshold and the duration exceeds a preset duration, and the preset false alarm rules include that telemetry is abnormal and overhaul is abnormal.
And an information sending module 64, configured to send out a voltage loss warning message if the system voltage meets the preset voltage loss rule and does not meet the preset false alarm rule.
In an optional embodiment of the present invention, the starting condition determining module 62 further includes:
and the system voltage determining submodule is used for determining the change direction and the change rate of the system voltage within preset monitoring time.
And the voltage loss rule determining submodule is used for determining that the system voltage meets the voltage loss judgment starting condition if the change direction of the system voltage is downward, the change rate meets the preset change rate range and the current voltage value of the system voltage is smaller than the voltage loss threshold value, wherein the voltage loss threshold value is determined based on the preset percentage of the rated value.
In an alternative embodiment of the invention, the system voltage comprises the voltage of each bus in the system.
And the system voltage determining submodule is also used for determining the change direction and the change rate of the voltage of each section of bus in the preset monitoring time.
And the voltage loss rule determining submodule is also used for determining that the system voltage meets the voltage loss judgment starting condition if the change direction of any section of bus voltage is downward, the change rate meets the preset change rate range and the current voltage value of the system voltage is smaller than the voltage loss threshold.
In an optional embodiment of the present invention, the voltage loss determining module 63 further includes:
and the telemetering data acquisition submodule is used for acquiring telemetering data of the station to the system.
And the telemetering determination submodule is used for determining that the system voltage meets a preset false alarm rule if all the telemetering data are 0.
In an optional embodiment of the present invention, the voltage loss determining module 63 further includes:
and the overhaul determining submodule is used for determining whether the acquisition time interval of the telemetering data of the system is greater than the preset interval time or not when the voltage of the system is lower than the voltage loss threshold value, and receiving no accident signal, wherein the accident signal comprises an accident switching-off signal.
And the maintenance false alarm determining submodule is used for determining that the system voltage accords with the preset false alarm rule if the system voltage accords with the preset false alarm rule.
In an optional embodiment of the present invention, the information sending module 64 further includes:
and the manual confirmation submodule calls and displays a manual confirmation window and counts down if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule.
And the voltage loss confirmation submodule is used for sending out voltage loss warning information if the correct confirmation information is received based on the manual confirmation window before the countdown is finished.
And the false alarm confirming submodule is used for forming false alarm data and storing the false alarm data into a false alarm database if the false alarm confirming information is received based on the manual confirmation window before the countdown is finished.
And the information sending submodule is used for sending out the voltage loss warning information if the countdown is finished and the feedback information of the manual confirmation window is not received.
In an alternative embodiment of the present invention, the method further comprises:
and the detection module is used for detecting whether the plant station is provided with an identifier of the maintenance state of the whole station.
And the overhaul state determining module is used for determining that the plant station is in the all-station overhaul state if the plant station is in the all-station overhaul state.
And the bus voltage determining module is used for determining whether the number of the bus voltage sections with the voltage value not equal to zero in the system voltage is 1 or not if the bus voltage sections with the voltage value not equal to zero in the system voltage are not.
And the maintenance state setting module is used for determining that the plant station is in a total station maintenance state and sending maintenance identification setting reminding information when the number of sections of the bus voltage with the voltage value not being zero in the system voltage is 1.
And the execution module is used for executing the steps of determining whether the system voltage meets a preset no-voltage rule and a preset false alarm rule when the number of sections of the bus voltage with the voltage value not equal to zero in the system voltage is not 1.
The plant station voltage loss monitoring and judging device provided by the embodiment of the invention can execute the plant station voltage loss monitoring and judging method provided by the first embodiment and the second embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
EXAMPLE five
Fig. 5 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention, as shown in fig. 5,
the system comprises a memory 71, a processor 72 and a computer program stored on the memory 71 and capable of running on the processor 72, and is characterized in that the processor 72 implements the method for monitoring and determining the station loss of voltage according to any one of the above embodiments when executing the program.
The computer apparatus comprises a processor 72, a memory 71, an input device 73 and an output device 74; the number of the processors 72 in the computer device may be one or more, and one processor 72 is taken as an example in fig. 4; the processor 72, the memory 71, the input device 73 and the output device 74 in the computer apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 5.
The memory 71 serves as a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as corresponding program instructions/modules of the plant-station voltage-loss monitoring and judging method in the embodiment of the present invention (for example, the acquiring module 61, the starting condition determining module 62, the voltage-loss determining module 63, and the information issuing module 64 in the plant-station voltage-loss monitoring and judging device).
The memory 71 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 71 may include high speed random access memory 71, and may also include non-volatile memory 71, such as at least one piece of disk memory 71, flash memory device, or other non-volatile solid state memory 71. In some examples, the memory 71 may further include memory 71 remotely located from the processor 72, and these remote memories 71 may be connected to the device/terminal/server through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 73 may be used to receive input numeric or character information and generate key signal inputs related to power user settings and function control of the apparatus.
The output device 74 may include a display device that displays numeric or character information that may be used to receive input, as well as a production and screen.
The processor 72 executes various functional applications and data processing of the computer device by running software programs, instructions and modules stored in the memory 71, so as to implement the above-mentioned plant pressure loss monitoring and determining method.
EXAMPLE six
An embodiment of the present invention further provides a computer-readable storage medium, where instructions in the storage medium, when executed by a processor 72 of a device, enable the device to perform a method for monitoring and determining a station loss of voltage according to the foregoing method embodiment, where the method includes:
acquiring system voltage of a plant station;
determining whether the system voltage of the plant station meets a voltage loss judgment starting condition, wherein the voltage loss judgment starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time of the system voltage lower than the voltage loss threshold value exceeds a preset time;
if yes, determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule or not when the plant station is not in a total station maintenance state, wherein the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds a preset duration, and the preset false alarm rule comprises telemetering abnormity and maintenance abnormity;
and if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, sending out voltage loss alarm information.
Of course, the instructions in the storage medium are not limited to the method operations described above, and may also perform related operations in the plant loss pressure monitoring and determining method provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. With this understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory 71 (ROM), a Random Access Memory 71 (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and the like, and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device) perform the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above search apparatus, each included unit and module are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for monitoring and judging the pressure loss of a plant station is characterized by comprising the following steps:
acquiring system voltage of a plant station;
determining whether the system voltage of the plant station meets a voltage loss judgment starting condition, wherein the voltage loss judgment starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time of the system voltage lower than the voltage loss threshold value exceeds a preset time;
if yes, determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule or not when the plant station is not in a total station maintenance state, wherein the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds a preset duration, and the preset false alarm rule comprises telemetering abnormity and maintenance abnormity; the telemetering abnormality comprises that all telemetering data are 0, and the overhaul abnormality comprises that the system voltage is lower than a voltage loss threshold value, the acquisition time interval of the telemetering data of the system is greater than a preset interval time, and an accident signal is not received;
and if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule, sending out voltage loss alarm information.
2. The method for monitoring and judging the loss of voltage of the plant according to claim 1, wherein the step of determining whether the system voltage of the plant meets the loss of voltage judgment starting condition comprises the steps of:
determining the change direction and the change rate of the system voltage within a preset monitoring time;
and if the change direction of the system voltage is downward, the change rate meets a preset change rate range and the current voltage value of the system voltage is smaller than the voltage loss threshold, determining that the system voltage meets the voltage loss judgment starting condition, wherein the voltage loss threshold is determined based on a preset percentage of a rated value.
3. The plant voltage loss monitoring and judging method according to claim 2, wherein the system voltage comprises bus voltage of each section in the system;
the determining the change direction and the change rate of the system voltage comprises: determining the change direction and the change rate of the voltage of each section of bus;
correspondingly, if the change direction of the system voltage is downward, the change rate satisfies a preset change rate range and the current voltage value of the system voltage is smaller than the no-voltage threshold, determining that the system voltage meets the no-voltage judgment starting condition, including:
and if the change direction of any section of bus voltage is downward, the change rate meets a preset change rate range and the current voltage value of the system voltage is smaller than the voltage loss threshold, determining that the system voltage meets the voltage loss judgment starting condition.
4. The plant station voltage loss monitoring and judging method according to any one of claims 1 to 3, wherein the determining whether the system voltage meets a preset false alarm rule comprises:
acquiring telemetering data of the station to the system;
and if the telemetering data are all 0, determining that the system voltage accords with a preset false alarm rule.
5. The plant station voltage loss monitoring and judging method according to any one of claims 1 to 3, wherein the determining whether the system voltage meets a preset false alarm rule comprises:
when the system voltage is lower than a voltage loss threshold value, determining whether the acquisition time interval of the telemetering data of the system is larger than a preset interval time or not, and not receiving an accident signal, wherein the accident signal comprises an accident opening signal;
and if so, determining that the system voltage conforms to the preset false alarm rule.
6. The method for monitoring and judging the loss of voltage of the plant station according to claim 5, wherein if the system voltage meets the preset loss of voltage rule and does not meet the preset false alarm rule, the sending out the loss of voltage alarm information comprises:
if the system voltage conforms to the preset no-voltage rule and does not conform to the preset false alarm rule, calling and displaying a manual confirmation window, and counting down;
if the correct confirmation information is received based on the manual confirmation window before the countdown is finished, sending out the decompression warning information,
if the information of confirming the false alarm is received based on the manual confirmation window before the countdown is finished, forming false alarm data and storing the false alarm data into a false alarm database;
and if the countdown is finished and the feedback information of the manual confirmation window is not received, sending out the voltage loss warning information.
7. The plant pressure loss monitoring and judging method according to claim 3,
after determining whether the system voltage of the plant station meets the voltage loss judgment starting condition, the method further comprises the following steps:
detecting whether a plant station is provided with an identifier of a total station overhaul state, and if so, determining that the plant station is in the total station overhaul state;
if not, determining whether the number of the sections of the bus voltage with the voltage value not equal to zero in the system voltage is 1;
if so, determining that the plant station is in a total station maintenance state and sending maintenance identification setting reminding information;
if not, executing the step of determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule.
8. The utility model provides a station decompression monitoring judgement device which characterized in that includes:
the acquisition module is used for acquiring the system voltage of the plant station;
the system comprises a starting condition determining module, a judging and starting module and a judging and starting module, wherein the starting condition determining module is used for determining whether the system voltage of the plant station accords with a voltage loss judging and starting condition, and the voltage loss judging and starting condition comprises that the system voltage changes to be lower than a voltage loss threshold value within a preset time interval and the duration time lower than the voltage loss threshold value exceeds a preset duration time;
the system comprises a voltage loss determining module and a false alarm determining module, wherein the voltage loss determining module is used for determining whether the system voltage meets a preset voltage loss rule and a preset false alarm rule if the plant station is not in a total station maintenance state, the preset voltage loss rule comprises that the system voltage is lower than a voltage loss threshold value and the duration exceeds a preset duration, and the preset false alarm rule comprises telemetering abnormity and maintenance abnormity; the telemetering abnormity comprises all telemetering data which are 0, and the overhauling abnormity comprises that the system voltage is lower than a voltage loss threshold, the acquisition time interval of the telemetering data of the system is longer than a preset interval time, and an accident signal is not received;
and the information sending module is used for sending out the voltage loss warning information if the system voltage accords with the preset voltage loss rule and does not accord with the preset false alarm rule.
9. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for plant loss pressure monitoring and determination as claimed in any one of claims 1-7 when executing the program.
10. A computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the plant loss of pressure monitoring method of any of claims 1-7.
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