CN105376044A - Secondary equipment time monitoring system and method for power system - Google Patents
Secondary equipment time monitoring system and method for power system Download PDFInfo
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Abstract
The invention provides a secondary equipment time monitoring management system and method for a power system. The system comprises a time synchronization device, a time synchronization monitoring device, an in-station communication management unit, a dispatching master station, a station layer network switch and at least one monitoring subsystem; the monitoring subsystem comprises a time synchronization monitoring signal generator and at least one secondary electric power equipment. The method comprises the following steps: constructing a time monitoring management system, initializing a parameter, generating a monitoring signal, responding to the monitoring signal, calculating a time deviation value, and performing alarm judgment and remote transmission. The secondary equipment time monitoring management system and method for the power system provided by the invention can realize the remote monitoring of time synchronization of the secondary electric power equipment, give the alarm when exceeding a set threshold and have a better application prospect.
Description
Technical field
A kind of secondary equipment in power system time supervision management system and method.
Technical field
The present invention relates to a kind of management system for monitoring and method of secondary equipment in power system, the management system for monitoring of especially a kind of secondary equipment in power system time and method.
Background technology
For implementing " State Grid Corporation of China's scheduling controlling major tasks task in 2014 arranges " (adjust and combine (2014) No. 17) and " Guo Tiao center is about the notice strengthening electric power system time synchronized operational management work " (adjusting from (2013) No. 82) requirement, Guo Tiao center has issued (2014) No. 53 literary compositions, about the notice strengthening the work of electric power system time synchronized monitoring management.
Principle of administration by different levels is followed in the monitoring of electric power system time synchronized, and dispatching control center monitoring management at different levels directly adjusts the time synchronized situation of plant stand and subordinate's scheduling, the time synchronized situation of main secondary device in plant stand monitoring management station.By grading time synchronous monitoring system, realize the closed loop management to electric power system time synchronized.But, go back at present neither one stand comparatively accurately in secondary device time supervision management system, the time precise synchronization of main secondary device in standing can't be realized.
Summary of the invention
The technical problem to be solved in the present invention is also not for time accurate synchronization system and the method for secondary equipment in power system in prior art.
In order to solve the problems of the technologies described above, the invention provides a kind of secondary equipment in power system time supervision management system, comprise time synchronism apparatus, time synchronized monitoring device, station communication supervisor, scheduling station, the station level network switch and at least one Monitor And Control Subsystem; Monitor And Control Subsystem comprises time synchronized monitor signal generator and at least one second power equipment; The clock signal output terminal of time synchronism apparatus is connected with the clock signal input terminal of time synchronized monitoring device with time synchronized monitor signal generator respectively; Each sky node signal output of time synchronized monitor signal generator is connected with the intake receiving terminal of each second power equipment in the Monitor And Control Subsystem of place respectively; The SOE output of each second power equipment is connected with the network interface of time synchronized monitoring device by the station level network switch; Time synchronized monitoring device is connected with station communication supervisor by the station level network switch; Station communication supervisor is connected with scheduling station communication network.
Adopt time synchronized monitor signal generator in real time accurately to each second power equipment transmit button amount signal of monitoring, can guarantee that the time of each second power equipment belongs to same reference source, there is synchronism more accurately, and after receiving on-off model timely generating strap target SOE message signals sometimes, receive SOE message signals by time synchronized monitoring device again and carry out analysis and judge, thus obtain the synchronousness of each second power equipment further; The time difference alarm threshold analyzing temporal information and the setting obtained compares by time synchronized monitoring device again, and send alarm signal by the station level network switch to station communication supervisor when exceeding threshold value, be forwarded to scheduling station by station communication supervisor again, achieve the remote monitoring of second power equipment; Employing time synchronism apparatus is respectively time synchronized monitoring device and time synchronized monitor signal generator provides synchronous time signal, can ensure that the precision maintenance in time of time synchronized monitor signal generator and time synchronized monitoring device is relative consistent.
Present invention also offers a kind of secondary equipment in power system time supervision management method, comprise the steps:
Step 1, builds time supervision management system, comprises time synchronism apparatus, time synchronized monitoring device, station communication supervisor, scheduling station, the station level network switch and at least one Monitor And Control Subsystem; Monitor And Control Subsystem comprises time synchronized monitor signal generator and at least one second power equipment; The clock signal output terminal of time synchronism apparatus is connected with the clock signal input terminal of time synchronized monitoring device with time synchronized monitor signal generator respectively; Each sky node signal output of time synchronized monitor signal generator is connected with the intake receiving terminal of each second power equipment in the Monitor And Control Subsystem of place respectively; The SOE output of each second power equipment is connected with the network interface of time synchronized monitoring device by the station level network switch; Time synchronized monitoring device is connected with station communication supervisor by the station level network switch; Station communication supervisor is connected with scheduling station communication network;
Step 2, parameter initialization, setting-up time Simultaneous Monitoring signal generator produces the transmission cycle of switching value output signal, and each sends the delivery time T0 of each sky node signal output transmit button amount output signal in the cycle;
Step 3, time synchronism apparatus is respectively time synchronized monitoring device and time synchronized monitor signal generator provides synchronous time signal;
Step 4, generate monitor signal, the delivery time T0 corresponding within the transmission cycle of setting by time synchronized monitor signal generator produces on-off model D0, and by empty node signal output, on-off model D0 is sent to the intake receiving terminal of corresponding second power equipment;
Step 5, monitor signal responds, by second power equipment trigger after receiving on-off model D0 with time target SOE message signals, and by the station level network switch, SOE message signals is sent to the network interface of time synchronized monitoring device;
Step 6, computing time deviate, time synchronized monitoring device obtains SOE trigger instants T1 according to the SOE message signals received, then according to the reporting Td that the delivery time T0 of time synchronized monitor signal generator calculates secondary device is:
Td=T1–T0；
Step 7, alarm judges, time synchronized monitoring device judges whether to report to the police according to the time difference alarm threshold value of setting, when reporting Td is greater than the alarm threshold value of setting, then generate corresponding alarm signal, and by the station level network switch, alarm signal and reporting Td are sent to the signal receiving end of station communication supervisor;
Step 8, long-range transmission, in standing, the alarm signal of reception and reporting Td signal are transmitted to scheduling station by communications manager again.
As the further restriction scheme of the inventive method, in step 1, time synchronized monitor signal generator is provided with M empty node signal output; In step 2, transmission cycle of setting is that the interval of T minute, M the delivery time T0 of empty node signal output within each transmission cycle is more than or equal to 1 second.Adopt the time interval being more than or equal to 1 second, effectively can avoid because multiple empty node signal output sends multiple on-off model D0 simultaneously and trigger multiple SOE message signals simultaneously, preventing network traffics from uprushing and cause signal blockage, improve the reliability of monitoring.
As the further restriction scheme of the inventive method, in step 5, second power equipment triggers SOE message signals after receiving on-off model D0 to there is the intrinsic time poor; In step 6, the reporting Td after compensating setup time is:
Td=T1–T0-Tc
In formula, Tc is that to trigger intrinsic time of SOE message signals after receiving on-off model D0 poor.Adopt time bias can improve the precision of time controling further.
Beneficial effect of the present invention is: (1) adopts time synchronized monitor signal generator in real time accurately to each second power equipment transmit button amount signal of monitoring, can guarantee that the time of each second power equipment belongs to same reference source, there is synchronism more accurately, and after receiving on-off model timely generating strap target SOE message signals sometimes, receive SOE message signals by time synchronized monitoring device again and carry out analysis and judge, thus obtain the synchronousness of each second power equipment further; (2) time difference alarm threshold analyzing temporal information and the setting obtained compares by time synchronized monitoring device again, and send alarm signal by the station level network switch to station communication supervisor when exceeding threshold value, be forwarded to scheduling station by station communication supervisor again, achieve the remote monitoring of second power equipment; (3) time bias is adopted can to improve the precision of time controling further; (4) adopt time synchronism apparatus to be respectively time synchronized monitoring device and time synchronized monitor signal generator provides synchronous time signal, can ensure time synchronized monitor signal generator and time synchronized monitoring device in time precision keep relative consistent.
Accompanying drawing explanation
Fig. 1 is present system structural representation;
Fig. 2 is the inventive method flow chart.
Embodiment
As shown in Figure 1, secondary equipment in power system time supervision management system of the present invention, comprises time synchronism apparatus, time synchronized monitoring device, station communication supervisor, scheduling station, the station level network switch and at least one Monitor And Control Subsystem; Monitor And Control Subsystem comprises time synchronized monitor signal generator and at least one second power equipment; The clock signal output terminal of time synchronism apparatus is connected with the clock signal input terminal of time synchronized monitoring device with time synchronized monitor signal generator respectively; Each sky node signal output of time synchronized monitor signal generator is connected with the intake receiving terminal of each second power equipment in the Monitor And Control Subsystem of place respectively; The SOE output of each second power equipment is connected with the network interface of time synchronized monitoring device by the station level network switch; Time synchronized monitoring device is connected with station communication supervisor by the station level network switch; Station communication supervisor is connected with scheduling station communication network.
This secondary equipment in power system time supervision management system operationally, is first respectively time synchronized monitoring device by time synchronism apparatus and time synchronized monitor signal generator provides synchronous time signal; Real-time accurately to each second power equipment transmit button amount signal of monitoring by time synchronized monitor signal generator again, guarantee that the time of each second power equipment belongs to same reference source, there is synchronism more accurately; Timely generating strap target SOE message sometimes after second power equipment receives on-off model; Receive SOE message signals by time synchronized monitoring device again and carry out analysis and judge, thus obtain the synchronousness of each second power equipment further; The time difference alarm threshold analyzing temporal information and the setting obtained compares by time synchronized monitoring device again, and send alarm signal by the station level network switch to station communication supervisor when exceeding threshold value, be forwarded to scheduling station by station communication supervisor again, achieve the remote monitoring of second power equipment.
SOE(SequenceOfEvent, program event) type of Time And Event that occurs for recording events, such as during certain switch ×× there is the action 1 or 0 of what type in ×× point ×× ×× second millisecond.
As shown in Figure 2, secondary equipment in power system time supervision management method of the present invention, comprises the steps:
Step 1, builds time supervision management system, comprises time synchronism apparatus, time synchronized monitoring device, station communication supervisor, scheduling station, the station level network switch and at least one Monitor And Control Subsystem; Monitor And Control Subsystem comprises time synchronized monitor signal generator and at least one second power equipment; The clock signal output terminal of time synchronism apparatus is connected with the clock signal input terminal of time synchronized monitoring device with time synchronized monitor signal generator respectively; Each sky node signal output of time synchronized monitor signal generator is connected with the intake receiving terminal of each second power equipment in the Monitor And Control Subsystem of place respectively; The SOE output of each second power equipment is connected with the network interface of time synchronized monitoring device by the station level network switch; Time synchronized monitoring device is connected with station communication supervisor by the station level network switch; Station communication supervisor is connected with scheduling station communication network;
Step 2, parameter initialization, setting-up time Simultaneous Monitoring signal generator produces the transmission cycle of switching value output signal, and each sends the delivery time T0 of each sky node signal output transmit button amount output signal in the cycle;
Step 3, time synchronism apparatus is respectively time synchronized monitoring device and time synchronized monitor signal generator provides synchronous time signal;
Step 4, generate monitor signal, the delivery time T0 corresponding within the transmission cycle of setting by time synchronized monitor signal generator produces on-off model D0, and by empty node signal output, on-off model D0 is sent to the intake receiving terminal of corresponding second power equipment;
Step 5, monitor signal responds, by second power equipment trigger after receiving on-off model D0 with time target SOE message signals, and by SOE output, SOE message signals is sent to the network interface of time synchronized monitoring device;
Step 6, computing time deviate, time synchronized monitoring device obtains SOE trigger instants T1 according to the SOE message signals received, then according to the reporting Td that the delivery time T0 of time synchronized monitor signal generator calculates secondary device is:
Td=T1–T0；
Step 7, alarm judges, time synchronized monitoring device judges whether to report to the police according to the time difference alarm threshold value of setting, when reporting Td is greater than the alarm threshold value of setting, then generate corresponding alarm signal, and by the station level network switch, alarm signal and reporting Td are sent to the signal receiving end of station communication supervisor;
Step 8, long-range transmission, in standing, the alarm signal of reception and reporting Td signal are transmitted to scheduling station by communications manager again.
Wherein, in step 1, time synchronized monitor signal generator is provided with M empty node signal output; In step 2, transmission cycle of setting is that the interval of T minute, M the delivery time T0 of empty node signal output within each transmission cycle is more than or equal to 1 second.Concrete, in step 1, time synchronized monitor signal generator is provided with 4 empty node signal outputs; In step 2, the transmission cycle of setting is 15 minutes, and 4 the delivery time T0s of empty node signal output within each transmission cycle are respectively the 1st second, the 2nd second, the 3rd second and the 4th second.Adopt the time interval being more than or equal to 1 second, effectively can avoid because multiple empty node signal output sends multiple on-off model D0 simultaneously and trigger multiple SOE message signals simultaneously, preventing network traffics from uprushing and cause signal blockage, improve the reliability of monitoring.
In step 5, second power equipment triggers SOE message signals after receiving on-off model D0 to there is the intrinsic time poor; In step 6, the reporting Td after compensating setup time is:
Td=T1–T0-Tc
In formula, Tc is that to trigger intrinsic time of SOE message signals after receiving on-off model D0 poor, and this value is only relevant with the attribute of each second power equipment own.Adopt time bias can improve the precision of time controling further.
The configuration of the delivery time T0 of time synchronized monitor signal generator transmit button amount output signal is identical with the configuration of time synchronized monitoring device, such time synchronized monitoring device only need synchronous (method of synchronization can adopt SNTP with time synchronism apparatus class precision second in station, serial message), the moment of next delivery time T0 can be calculated.
Time synchronized monitoring device possesses transformer station's communication manager function, possess the communication protocol of access needed for second power equipment, and can the time remote signalling point of configuration association, delivery time T0 and intrinsic time difference Tc, require calculate the time difference and produce alarm signal according to time synchronized monitoring function, and these Organization of Datas 1 are met the appliance arrangement of transformer station's communication protocol requirement, accessed by Substation Station background system or communications manager and obtain real time data.
Claims (4)
1. a secondary equipment in power system time supervision management system, is characterized in that, comprises time synchronism apparatus, time synchronized monitoring device, station communication supervisor, scheduling station, the station level network switch and at least one Monitor And Control Subsystem; Monitor And Control Subsystem comprises time synchronized monitor signal generator and at least one second power equipment; The clock signal output terminal of time synchronism apparatus is connected with the clock signal input terminal of time synchronized monitoring device with time synchronized monitor signal generator respectively; Each sky node signal output of time synchronized monitor signal generator is connected with the intake receiving terminal of each second power equipment in the Monitor And Control Subsystem of place respectively; The SOE output of each second power equipment is connected with the network interface of time synchronized monitoring device by the station level network switch; Time synchronized monitoring device is connected with station communication supervisor by the station level network switch; Station communication supervisor is connected with scheduling station communication network.
2. a secondary equipment in power system time supervision management method, is characterized in that, comprises the steps:
Step 1, builds time supervision management system, comprises time synchronism apparatus, time synchronized monitoring device, station communication supervisor, scheduling station, the station level network switch and at least one Monitor And Control Subsystem; Monitor And Control Subsystem comprises time synchronized monitor signal generator and at least one second power equipment; The clock signal output terminal of time synchronism apparatus is connected with the clock signal input terminal of time synchronized monitoring device with time synchronized monitor signal generator respectively; Each sky node signal output of time synchronized monitor signal generator is connected with the intake receiving terminal of each second power equipment in the Monitor And Control Subsystem of place respectively; The SOE output of each second power equipment is connected with the network interface of time synchronized monitoring device by the station level network switch; Time synchronized monitoring device is connected with station communication supervisor by the station level network switch; Station communication supervisor is connected with scheduling station communication network;
Step 2, parameter initialization, setting-up time Simultaneous Monitoring signal generator produces the transmission cycle of switching value output signal, and each sends the delivery time T0 of each sky node signal output transmit button amount output signal in the cycle;
Step 3, time synchronism apparatus is respectively time synchronized monitoring device and time synchronized monitor signal generator provides synchronous time signal;
Step 4, generate monitor signal, the delivery time T0 corresponding within the transmission cycle of setting by time synchronized monitor signal generator produces on-off model D0, and by empty node signal output, on-off model D0 is sent to the intake receiving terminal of corresponding second power equipment;
Step 5, monitor signal responds, by second power equipment trigger after receiving on-off model D0 with time target SOE message signals, and by the station level network switch, SOE message signals is sent to the network interface of time synchronized monitoring device;
Step 6, computing time deviate, time synchronized monitoring device obtains SOE trigger instants T1 according to the SOE message signals received, then according to the reporting Td that the delivery time T0 of time synchronized monitor signal generator calculates secondary device is:
Td=T1–T0；
Step 7, alarm judges, time synchronized monitoring device judges whether to report to the police according to the time difference alarm threshold value of setting, when reporting Td is greater than the alarm threshold value of setting, then generate corresponding alarm signal, and by the station level network switch, alarm signal and reporting Td are sent to the signal receiving end of station communication supervisor;
Step 8, long-range transmission, in standing, the alarm signal of reception and reporting Td signal are transmitted to scheduling station by communications manager again.
3. secondary equipment in power system time supervision management method according to claim 2, is characterized in that, in step 1, time synchronized monitor signal generator is provided with M empty node signal output; In step 2, transmission cycle of setting is that the interval of T minute, M the delivery time T0 of empty node signal output within each transmission cycle is more than or equal to 1 second.
4. the secondary equipment in power system time supervision management method according to Claims 2 or 3, is characterized in that, in step 5, second power equipment triggers SOE message signals after receiving on-off model D0 to there is the intrinsic time poor; In step 6, the reporting Td after compensating setup time is:
Td=T1–T0-Tc
In formula, Tc is that to trigger intrinsic time of SOE message signals after receiving on-off model D0 poor.
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| CN110108366A (en) * | 2019-05-20 | 2019-08-09 | 国网福建省电力有限公司漳州供电公司 | A kind of infrared cable vault's temp measuring system of dot matrix based on dispatch network |
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| US11537086B2 (en) * | 2018-04-27 | 2022-12-27 | University Of Tennessee Research Foundation | Pulsar based timing synchronization method and system |
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| CN105939180A (en) * | 2016-06-22 | 2016-09-14 | 无锡德斯凯动力科技有限公司 | Power system secondary device time monitoring distributed management system |
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| CN107483158A (en) * | 2017-09-13 | 2017-12-15 | 广州供电局有限公司 | The data transmission method for uplink of substation secondary device and secondary device |
| US11537086B2 (en) * | 2018-04-27 | 2022-12-27 | University Of Tennessee Research Foundation | Pulsar based timing synchronization method and system |
| CN110108366A (en) * | 2019-05-20 | 2019-08-09 | 国网福建省电力有限公司漳州供电公司 | A kind of infrared cable vault's temp measuring system of dot matrix based on dispatch network |
| CN112737877A (en) * | 2020-12-25 | 2021-04-30 | 国网江苏省电力有限公司苏州供电分公司 | Secondary equipment time setting state monitoring method and system |
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