CN104022573A - Method for making judgment and giving alarm for line switch protective tripping - Google Patents
Method for making judgment and giving alarm for line switch protective tripping Download PDFInfo
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- CN104022573A CN104022573A CN201410245961.9A CN201410245961A CN104022573A CN 104022573 A CN104022573 A CN 104022573A CN 201410245961 A CN201410245961 A CN 201410245961A CN 104022573 A CN104022573 A CN 104022573A
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Abstract
The invention provides a method for making a judgment and giving an alarm for line switch protective tripping. The method includes the steps of reading event messages from a schedule, storing the event messages in a buffer area according to the time sequence, judging whether an event is a switch motion or not according to the stored event messages, if yes, determining whether event messages within a preset time period before and after the switch motion contain protection motion information or not according to a predefined protection motion judgment criterion, and if yes, determining that the switch motion is protective tripping and giving the alarm. According to the method, a judgment can be automatically and accurately made, event processing accuracy and real-time response degree are improved, and various defects caused by manual subjective judgment can be remarkably eliminated.
Description
Technical field
The present invention relates to the judgement alarm method of the line switching trip protection of a kind of Power SCADA (monitoring and data acquisition system) use.
Background technology
In distribution network running, be often accompanied by the trip signal, protection action of some on-the-spot actuating signals, particularly switch etc., and these phenomenons has sudden and randomness.When switch motion occurs at scene, dispatcher is often extremely concerned about that these actions are to belong to regular event, or because fault causes.Traditional SCADA system, generally only enumerates relevant event one by one, does not further analyze, can clearly not indicate the character of switch motion, usually by manual type, carry out subjective judgement, not only easily occur mistake, and response is very slow, can not ensure the timely processing to fault.Thereby how to judge accurately that whether switch motion is protection action, and send in time warning, becomes the problem that dispatcher extremely pays close attention to.
Summary of the invention
The present invention aims to provide a kind of judgement alarm method of line switching trip protection.
The judgement alarm method of line switching trip protection of the present invention comprises the steps: to read the event message of self scheduling, and described event message is stored in buffering area according to time series; According to the described event message decision event of storage, whether be switch motion; When definite described event is switch motion, according to predefined protection operating criterion, determine in the event message in the described switch motion front and back scheduled time whether comprise protection action message; While comprising described protection action message in the event message before and after described switch motion in the scheduled time, determine that described switch motion is trip protection and reports to the police
The present invention is owing to adopting technique scheme; when switch is during due to line fault generation trip protection; it accurately judges by automated manner, improves accuracy and the real-time response degree of event handling, can significantly eliminate all drawbacks of bringing due to artificial subjective judgement.
Accompanying drawing explanation
Fig. 1 is the general framework block diagram of power monitoring of the present invention and data acquisition system (SCADA).
Fig. 2 is the flow chart of the judgement alarm method of line switching trip protection of the present invention.
Embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is described.
First, with reference to Fig. 1, illustrate that power monitoring of the present invention and data acquisition system are (hereinafter to be referred as general framework SCADA).As shown in Figure 1, SCADA system, i.e. data acquisition and supervisor control.SCADA system in consequence very, is the basis of EMS, DMS, feeder automation function in electric power system.The data such as each substation remote measurement of its Real-time Collection, remote signalling, protection information, issue the orders such as control, definite value simultaneously to each substation.System by with communicating by letter of distant place distribution terminal (comprising FTU, DTU, RTU) and protection substation realize to plant stand, the information gathering of electrical network real time execution and with the information interaction of corresponding station end protection substation; the transfer of data being received is to human-computer interface system; and then realize man-machine interaction; as the real-time status with word, figure, animation displaying scene, and can operate on-the-spot switch, valve.
SCADA system is divided into three aspects conventionally:
1, device layer: be installed on on-the-spot various remote monitorings, control unit, as (DTU) such as panel switches monitor terminal (FTU), distribution transformer monitoring terminal (RTU, TTU), switchyard monitor terminals.These distant place detection and control terminals have the function of on-site data gathering conventionally, the function also with control or protection having.
2, Communication Layer: by communication system, the data such as the remote measurement of distant place detection and control terminal Real-time Collection, remote signalling, protection information can be sent to the main station system in Control Room; By man-machine interaction, also to each monitor terminal, issue control command.The communication media relating to generally includes: Ethernet, optical fiber, GPRS, note etc.;
3, main website layer: main website layer is generally the network system that connects multiple host, is generally deployed in Control Room.By main station system, realize man-machine interaction, on the interface of main frame by word, figure,
The various ways such as animation intuitively reflect on-the-spot real-time status, and operator can realize controlling field apparatus (as switch, valve etc.) by man-machine interface.
The computer node of main website layer generally includes:
● database server: database service is provided, realizes the storage of basic data, historical data and share.Such as: SQL server or Oracle;
● real-time storehouse server: Real-time Data Service is provided
● operator station: for operator provides human-computer interaction interface, realize picture disply, Refresh Data, warning, curve, issue control etc.
● maintenance work station: for to the modification of figure, data, maintenance
● Web server: for the issue to the data such as result of real time data, historical data, picture and form, computational analysis
● front end processor: by with the communicating by letter of distant place detection and control terminal, realize the information gathering of electrical network real time execution and man-machine interaction
SCADA software systems are comprised of a lot of tasks, and each task completes specific function.Server node is responsible for data storage, collection, data processing (as range conversion, filtering, warning inspection, calculating, logout, historical storage, execution user script etc.).Operator station is responsible for demonstration and the processing of on-the-spot real time data, as picture disply, Refresh Data, warning, curve, form etc.Each application is both associated, independent again, in logic as Unified Global, but physically may be deployed on different machines.The program corresponding with method of the present invention can be deployed on server, or in arbitrary operator station.
Conventionally Power SCADA system is monitored the running status of electrical network in real time, and records variety of event message.Conventionally event type comprises:
A, telemetry event: more the upper limit, more too fast, the creep of lower limit, rate of change, sudden change, recovery are normal etc.;
B, remote signalling event: switch deciliter, ground connection, short circuit, pressing plate, energy storage, overcurrent etc.
C, SOE event
D, system event: network is disconnected, low memory, process is dead, process restarts etc.
E, Artificial event: manually put count, list, reset, confirmation etc.
Determination methods below with reference to the flowchart text line switching trip protection of the present invention of Fig. 2.As shown in Figure 2, first the predefined relevant parameter of the present invention is described:
● protection operating criterion: if this parameter-definition switch motion be trip protection, the dependent event type of the switch protection that should follow action.(consider in actual motion, the protective device of each producer is different, also different to the definition of relevant protection action, realization, and the criterion parameter of protection action should define flexibly according to actual conditions.Common protection action message comprises: overcurrent, short circuit, speed are jumped, accident is total etc.)
● time segment length t: this parameter has determined to receive after switch motion, the window width while traveling through in event buffer, i.e. segment length when front and back constantly occur in switch motion.(type of protective device, realization mechanism and communication mode all can affect parameter generating, should adjust flexibly according to actual conditions)
These parameters can be stored in configuration file, also can be stored in database table.
Before the flow chart of execution graph 2, read in advance above-mentioned parameter (protection operating criterion and time segment length t)
In step S100, read the event message of self scheduling, and received event message is stored in buffering area according to time series;
Then, in step S101, whether the event that judgement receives is switch motion information, and particularly, whether the event type that judgement receives is the remote signalling that represents switch deciliter displacement.
When definite described event is not switch motion (step S101: no), processes and return to step S100.
When definite described event is switch motion (step S101: be), processes and enter step S102.In step S102, to record current markers ts, and start clock and carry out timing, the clock cycle is t.Then, process and enter step S103.In step S103, whether the time that judges meets ts+t.When the time, do not arrive ts+t during the moment (step S103: no), return to step S100, read the event message of self scheduling and be stored in buffering area.(otherwise step S103: be), arrives ts+t during the moment, processes and enters step S104.In step S104, system traversal event buffer, whether judgement, in switch motion front and back predetermined amount of time constantly (i.e. [ts-t, ts+t]), has the criterion of the predefined protection action message of event matches.
In the present embodiment, t is 30 seconds, but the invention is not restricted to this, for example can arrange flexibly as required, and can be for example 1 minute.
While comprising predefined protection action message in the sequence of events before and after described switch motion in the scheduled time (step S104: be), process and enter step S105.Otherwise, process and return to step S100.In step S105, determine that described switch motion is trip protection and reports to the police.
Described type of alarm can comprise: sound, light or word, picture cues etc.
Although described the present invention with reference to embodiment, should be appreciated that and the invention is not restricted to the disclosed embodiments.The scope of reply claims gives the widest explanation, so that it covers all modification, equivalent structure and function.
Claims (1)
1. a judgement alarm method for line switching trip protection, described judgement alarm method comprises the steps:
Read the event message of self scheduling, and described event message is stored in buffering area according to time series;
According to the described event message decision event of storage, whether be switch motion;
When definite described event is switch motion, according to predefined protection operating criterion, determine in the event message in the described switch motion front and back scheduled time whether comprise protection action message;
While comprising described protection action message in the event message before and after described switch motion in the scheduled time, determine that described switch motion is trip protection and reports to the police.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410245961.9A CN104022573A (en) | 2014-06-05 | 2014-06-05 | Method for making judgment and giving alarm for line switch protective tripping |
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| CN201410245961.9A CN104022573A (en) | 2014-06-05 | 2014-06-05 | Method for making judgment and giving alarm for line switch protective tripping |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218680A (en) * | 2014-09-26 | 2014-12-17 | 国家电网公司 | Real-time alarm system and communication method thereof for supervisory control and data acquisition (SCADA) system |
| CN110232792A (en) * | 2019-05-16 | 2019-09-13 | 中石化石油工程技术服务有限公司 | Intelligent alarm technology and auxiliary operation method based on SCADA system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003073176A1 (en) * | 2002-02-25 | 2003-09-04 | General Electric Company | Protection system for power distribution systems |
| CN102044914A (en) * | 2010-12-21 | 2011-05-04 | 航天科工深圳（集团）有限公司 | Method and device capable of realizing simulation feeder terminal unit |
| CN103150625A (en) * | 2012-10-22 | 2013-06-12 | 山东电力集团公司青岛供电公司 | FTU-based blackout event information collection method and system |
-
2014
- 2014-06-05 CN CN201410245961.9A patent/CN104022573A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003073176A1 (en) * | 2002-02-25 | 2003-09-04 | General Electric Company | Protection system for power distribution systems |
| CN102044914A (en) * | 2010-12-21 | 2011-05-04 | 航天科工深圳（集团）有限公司 | Method and device capable of realizing simulation feeder terminal unit |
| CN103150625A (en) * | 2012-10-22 | 2013-06-12 | 山东电力集团公司青岛供电公司 | FTU-based blackout event information collection method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218680A (en) * | 2014-09-26 | 2014-12-17 | 国家电网公司 | Real-time alarm system and communication method thereof for supervisory control and data acquisition (SCADA) system |
| CN110232792A (en) * | 2019-05-16 | 2019-09-13 | 中石化石油工程技术服务有限公司 | Intelligent alarm technology and auxiliary operation method based on SCADA system |
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Application publication date: 20140903 |