CN102833119A - Method for synchronously receiving and processing real-time data under dual-network redundancy mechanism - Google Patents
Method for synchronously receiving and processing real-time data under dual-network redundancy mechanism Download PDFInfo
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- CN102833119A CN102833119A CN201210372611XA CN201210372611A CN102833119A CN 102833119 A CN102833119 A CN 102833119A CN 201210372611X A CN201210372611X A CN 201210372611XA CN 201210372611 A CN201210372611 A CN 201210372611A CN 102833119 A CN102833119 A CN 102833119A
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Abstract
The invention relates to a method for synchronously receiving and processing real-time data under a dual-network redundancy mechanism. According to the real-time data transmission requirements and characteristics of dual-network redundancy mechanism of an automatic system of a transformer substation, a network segment inter-zone time limit dynamic priority selection strategy, a network segment automatic handoff trigger active summoning strategy and an event list cache comparing strategy to realize screening and synchronization of the dual-network real-time uploaded data to guarantee the receiving and processing of the station level and ensure that the station level can timely acquire the effective data without losing, and effectively screen and separate the redundant, repeated and even abnormal uploaded data.
Description
Technical field
The invention belongs to the power system automation technology field, relate to the method for real time data reception Synchronous Processing under a kind of double-network redundant mechanism.
Background technology
Conventional transmission protocol such as the IEC 60870-5-103 stipulations of present transformer station; Its device end (substation) send variable condition data and event class data on supporting initiatively, regularly send whole status datas in the circulation and supports station level (main website) always to call functions such as whole status datas together; When the double-network redundant communication is disposed; Device end (substation) is all set up TCP with station level (main website) respectively usually and is connected on two network segments; Sending data also to be connected by above-mentioned two TCP respectively on all send and (main website); Promptly redundant through communication link, data redundancy guarantees the communication reliability, causes loss of data, control fails to prevent unusually because a certain network segment connects.And on the other hand; Above-mentioned mode of operation is received to handle also for the real time data of station level and brings following problem: 1, under the nominal situation; Owing to received and sent redundant data on the double,, can cause follow-up data to be handled and the unnecessary double increase of transport overhead if do not add screening; 2, under some extreme unusual service condition as postpone excessive between self transmission task of device; Fierce access conflict appears in the shared communication network segment of bus (like Ethernet) commonly used and rollback retransmits and causes transmission lag excessive; Network switch forward delay when big data quantity is excessive or the like; The same device that station level will be received from two network segments send the data markers asynchronous; Even inconsistent phenomenon before and after taking place, this depends on the Processing tasks (as generating displacement information accurately according to real-time status information) that send the data sequencing for station level will produce very large disturbance, even cause its dysfunction.
Summary of the invention
The objective of the invention is to receive the problems of handling, proposed the method that real time data under a kind of novel double-network redundant mechanism receives Synchronous Processing in order to solve the two net of above electric substation automation system real time datas.
Technical scheme of the present invention is:
A, for real-time status data such as remote signalling, remote measurement, distant arteries and veins; Adopt and be with the time limit dynamic priority to choose between the network segment to realize choosing of valid data; Under the nominal situation; Station level can be received the real-time status data that device send simultaneously from two normal communication network segments, and this moment, receiving processing module can be made as limit priority with a normal communication network segment earlier at random in the starting stage, only to sending the real-time status data to handle on this network segment; And to giving the real-time status data to put aside on other network segments, directly ignore; Handling the network segment when the reception that is in limit priority TCP occurs and connects and interrupt or presetting in the time limit T1 free of data sending on successfully; It is unusual then can be judged as this network segment communicating; Reducing its priority transfers to subsequent use; Simultaneously another normal communication network segment lifting is limit priority and handles the real-time status data of sending on it, thereby realize sending the band time limit dynamic priority of real-time status data between the network segment to choose on the device;
B, when between the network segment real-time status Data Receiving handle being automaticallyed switch, trigger initiatively calling with the ageing and integrality of assurance device real-time status data.When the reception that is in limit priority is handled the network segment and communication abnormality occurred; Because the device real-time status data of sending on other network segments are left in the basket; To cause the station level real-time status data of refreshing apparatus in time; This state is duration T more than 1 probably; Thereby automatically switched at the new network segment and should carry out data to device in the very first time after limit priority is taken over the real-time status data and always call, to guarantee the ageing and integrality of current real-time status data;
Send data on C, the event class such as alarm event, action report for device; The station level receiving processing module is kept an event information buffer queue according to ordering before and after the markers to each device, need not consider priority to each communication network segment of same device, during the event class data on receiving device, sent; At first in the event information buffer queue, carry out comparison from back to front by markers; Confirm whether record of same incident, have then explanation successfully to be handled, directly ignore; Then it is not carried out data processing, and add it to event information buffer queue and use,, realized sending the order processing of event class data and effectively screening on installing in real time through said process for follow-up comparison.
The further prioritization scheme of the present invention does, the utilization of station level receiving processing module has the event information buffer queue, retransmits report, case mechanism in conjunction with powering on of possessing of cell device, but implement device power-down rebooting and incident, the report record function of not losing also.
The invention has the beneficial effects as follows: the inventive method is to the technical characterstic and the data characteristics of transformer station's double-network redundant communication; Take optimization process strategy targetedly; Processing logic is succinct, efficient; The operation expense is little; The real time data that can directly apply to the communication server in the electric substation automation system double-network redundant allocation plan, communication processor and local monitoring background system receives the realization of handling; The optimization of receive handling for station level double-network redundant communication data provides a kind of efficient, practical method, can guarantee that useful data in time obtains, do not lose and can effectively screen out, isolates unnecessary, repetition even abnormal data, so this technical method is with a wide range of applications in product developments such as station level such as the communication server, communication processor and monitoring background system.
Description of drawings
Fig. 1 is that band time limit dynamic priority is chosen treatment state figure between the network segment of the present invention.
Fig. 2 is an event queue buffer memory comparison process chart of the present invention.
Embodiment
1,, adopts and be with the time limit dynamic priority to choose between the network segment to realize choosing of valid data for real-time status data such as remote signalling, remote measurement, distant arteries and veins.With reference to accompanying drawing 1; Under the nominal situation; Station level can be received the real-time status data that device send simultaneously from two normal communication network segments, and this moment, receiving processing module can be made as limit priority with a normal communication network segment earlier at random in the starting stage, only to sending the real-time status data to handle on this network segment; And to giving the real-time status data to put aside on other network segments, directly ignore; Handling the network segment when the reception that is in limit priority TCP occurs and connects and interrupt or presetting in the time limit T1 free of data sending that (presetting time limit T1 can confirm according to the real time data refresh time interval T under the actual device normal communication situation 2 on successfully; T1=n* T2; N gets 1.5 ~ 3); It is unusual then can be judged as this network segment communicating; Reduce its priority and transfer to subsequent usely, promote another normal communication network segment for limit priority simultaneously and handle the real-time status data of sending on it, thereby realize sending the band time limit dynamic priority of real-time status data between the network segment to choose on the device.
2, when between the network segment real-time status Data Receiving handle being automaticallyed switch, trigger initiatively calling with the ageing and integrality of assurance device real-time status data.When the reception that is in limit priority is handled the network segment and communication abnormality occurred; Because the device real-time status data of sending on other network segments are left in the basket; To cause the station level real-time status data of refreshing apparatus in time; This state is duration T more than 1 probably, thereby is automatically switched at the new network segment and should carry out data to device in the very first time after limit priority is taken over the real-time status data processing and always call, to guarantee the ageing and integrality of current real-time status data.
3, for sending data on the event class such as the alarm event that installs, action report, the station level receiving processing module is kept an event information buffer queue according to the ordering of markers front and back (the maximum event information bar number of this buffer queue can be next definite according to preset maximum holding time or memory capacity size) to each device.With reference to accompanying drawing 2, need not consider priority to each communication network segment of same device, during the event class data on receiving device, sent, at first in the event information buffer queue, carry out comparison from back to front by markers, confirm whether record of same incident.There is then explanation successfully to be handled, directly ignores; Then it is not carried out data processing, and add it to event information buffer queue and use for follow-up comparison.Through said process, realized sending the order processing of event class data and effectively screening on installing in real time.In addition, the utilization of station level receiving processing module has the event information buffer queue, retransmits report, case mechanism in conjunction with powering on of possessing of cell device, but implement device power-down rebooting and incident, the report record function of not losing also.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should be appreciated that the present invention is not restricted to the described embodiments, and all technical schemes that scheme obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.That describes in the foregoing description and the specification simultaneously just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention; The present invention also has various changes and modifications; These variations and improvement all fall in the scope of the invention that requires protection, and the present invention requires protection range to be defined by its equivalent of appending claims.
Claims (2)
1. real time data receives the method for Synchronous Processing under the double-network redundant mechanism, it is characterized in that:
A, for real-time status data such as remote signalling, remote measurement, distant arteries and veins; Adopt and be with the time limit dynamic priority to choose between the network segment to realize choosing of valid data; Under the nominal situation; Station level can be received the real-time status data that device send simultaneously from two normal communication network segments, and this moment, receiving processing module can be made as limit priority with a normal communication network segment earlier at random in the starting stage, only to sending the real-time status data to handle on this network segment; And to giving the real-time status data to put aside on other network segments, directly ignore; Handling the network segment when the reception that is in limit priority TCP occurs and connects and interrupt or presetting in the time limit T1 free of data sending on successfully; It is unusual then can be judged as this network segment communicating; Reducing its priority transfers to subsequent use; Simultaneously another normal communication network segment lifting is limit priority and handles the real-time status data of sending on it, thereby realize sending the band time limit dynamic priority of real-time status data between the network segment to choose on the device;
B, when between the network segment real-time status Data Receiving handle being automaticallyed switch, trigger initiatively calling with the ageing and integrality of assurance device real-time status data: when the reception that is in limit priority is handled the network segment and communication abnormality occurred; Because the device real-time status data of sending on other network segments are left in the basket; To cause the station level real-time status data of refreshing apparatus in time; This state is duration T more than 1 probably; Thereby automatically switched at the new network segment and should carry out data to device in the very first time after limit priority is taken over the real-time status data processing and always call, to guarantee the ageing and integrality of current real-time status data;
Send data on C, the event class such as alarm event, action report for device; The station level receiving processing module is kept an event information buffer queue according to ordering before and after the markers to each device, need not consider priority to each communication network segment of same device, during the event class data on receiving device, sent; At first in the event information buffer queue, carry out comparison from back to front by markers; Confirm whether record of same incident, have then explanation successfully to be handled, directly ignore; Then it is not carried out data processing, and add it to event information buffer queue and use,, realized sending the order processing of event class data and effectively screening on installing in real time through said process for follow-up comparison.
2. real time data receives the method for Synchronous Processing under the double-network redundant mechanism according to claim 1; It is characterized in that: C; The utilization of station level receiving processing module has the event information buffer queue; Retransmit report, case mechanism in conjunction with powering on of possessing of cell device, but implement device power-down rebooting and incident, the report record function of not losing also.
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| CN103414694A (en) * | 2013-07-21 | 2013-11-27 | 华北电力大学（保定） | Communication service mapping and encapsulating method for transformer substation monitoring system |
| CN103944787A (en) * | 2014-04-30 | 2014-07-23 | 国家电网公司 | Station-level dual-network mode switching test method for intelligent substation |
| CN104269935A (en) * | 2014-10-23 | 2015-01-07 | 南京国电南自轨道交通工程有限公司 | Novel interval layer net networking method for subway pressing ring net protecting system |
| CN104617664A (en) * | 2014-06-24 | 2015-05-13 | 许继电气股份有限公司 | Method for switching double intelligent terminal device remote communication quantity in intelligent substation |
| CN105449855A (en) * | 2015-11-25 | 2016-03-30 | 国网浙江省电力公司绍兴供电公司 | Real time data run-through method for intelligent power grid deployment automatic system |
| CN109995423A (en) * | 2019-03-12 | 2019-07-09 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of FC-AE-ASM parallel redundant system and its data processing method |
| CN111355648A (en) * | 2020-02-18 | 2020-06-30 | 南京国电南自轨道交通工程有限公司 | RTU dual-computer redundancy acquisition system based on synchronous time window |
| CN112099769A (en) * | 2020-09-15 | 2020-12-18 | 电子科技大学 | Software radar architecture with unified data transmission interface |
| CN114124672A (en) * | 2021-10-12 | 2022-03-01 | 南方电网数字电网研究院有限公司 | Process layer double-network sampling data processing method of intelligent substation and protection device thereof |
| CN116340432A (en) * | 2023-05-29 | 2023-06-27 | 武汉华瑞测智能技术有限公司 | Database synchronization method, equipment and medium based on power data |
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| CN105449855B (en) * | 2015-11-25 | 2018-01-09 | 国网浙江省电力公司绍兴供电公司 | A kind of intelligent grid allotment automated system real time data insertion method |
| CN105449855A (en) * | 2015-11-25 | 2016-03-30 | 国网浙江省电力公司绍兴供电公司 | Real time data run-through method for intelligent power grid deployment automatic system |
| CN109995423A (en) * | 2019-03-12 | 2019-07-09 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of FC-AE-ASM parallel redundant system and its data processing method |
| CN111355648A (en) * | 2020-02-18 | 2020-06-30 | 南京国电南自轨道交通工程有限公司 | RTU dual-computer redundancy acquisition system based on synchronous time window |
| CN111355648B (en) * | 2020-02-18 | 2022-02-08 | 南京国电南自轨道交通工程有限公司 | RTU dual-computer redundancy acquisition system based on synchronous time window |
| CN112099769A (en) * | 2020-09-15 | 2020-12-18 | 电子科技大学 | Software radar architecture with unified data transmission interface |
| CN112099769B (en) * | 2020-09-15 | 2022-05-03 | 电子科技大学 | Software radar device with unified data transmission interface |
| CN114124672A (en) * | 2021-10-12 | 2022-03-01 | 南方电网数字电网研究院有限公司 | Process layer double-network sampling data processing method of intelligent substation and protection device thereof |
| CN114124672B (en) * | 2021-10-12 | 2024-01-23 | 南方电网数字电网研究院有限公司 | Process layer double-network sampling data processing method and protection device for intelligent substation |
| CN116340432A (en) * | 2023-05-29 | 2023-06-27 | 武汉华瑞测智能技术有限公司 | Database synchronization method, equipment and medium based on power data |
| CN116340432B (en) * | 2023-05-29 | 2023-08-04 | 武汉华瑞测智能技术有限公司 | Database synchronization method, equipment and medium based on power data |
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