CN102523120B - Transformer station process layer IED network pressure control method - Google Patents
Transformer station process layer IED network pressure control method Download PDFInfo
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- CN102523120B CN102523120B CN201110429664.6A CN201110429664A CN102523120B CN 102523120 B CN102523120 B CN 102523120B CN 201110429664 A CN201110429664 A CN 201110429664A CN 102523120 B CN102523120 B CN 102523120B
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Abstract
The present invention relates to transformer station process layer IED network pressure control method and device, the method arranges to receive data packet count module in network port driving module, cpu load monitor task is performed by dormancy timing, during mission-enabling, the count value calling network port driving resets interface, reception data packet count value is reset, whether the receiving function reexamining each network interface is closed, if be closed, then open pent receiving function, when the receiving data stream amount of network interface is greater than set point, automatically close the data receiver function of this network interface; The present invention is by controlling the flow of single network interface, guarantee that in intelligence, terminal equipment is when the network pressure of a network interface is very large, the function of other network interfaces is unaffected, under having stopped severe network environment, the possibility of intelligent terminal tripping, ensure that equipment reliability of operation.
Description
Technical field
The invention belongs to power system transformer substation technical field of automation, relate to a kind of transformer station process layer IED network pressure control method and device.
Background technology
Intelligent terminal is as a kind of IED equipment emerging in intelligent substation; to be applicable in intelligent substation a multiple switch gap or transformer bay every; its most important two functions: the 1) control command of receiving course layer network or the direct control command of protective relaying device; and drive corresponding outlet loop to complete controlling functions to primary equipment, and there is anti-misoperation function.2) gather the real time datas such as primary equipment position signalling, alarm signal, be distributed to process-level network by GOOSE service.
Due to the key position residing for Intelligent terminal equipment in intelligent transformer substation and critical function, high to its reliability requirement, all want the action message of assurance device in any case, the reliability improving intelligent terminal is the major tasks of intelligent substation product design.Because the networking mouth of intelligent terminal is connected on process-level network, although avoid network pressure on the impact of device by ways such as shielding broadcasting packets, but there is the possibility that impact that certain network interface is subject to network pressure causes device tripping, so just need one some network interfaces be subject to network pressure affect time, the affected mechanism of allomeric function of other network interfaces of anti-locking apparatus.
Summary of the invention
The object of this invention is to provide a kind of transformer station process layer IED network pressure control method and device, with the network interface solved in process layer IED networking mouth be subject to network pressure affect time, the function of other network interfaces is also by the problem that it affects.
For achieving the above object, transformer station process layer IED network pressure control method of the present invention arranges to receive data packet count module in network port driving module, cpu load monitor task is performed by dormancy timing, during mission-enabling, the count value calling network port driving resets interface, reception data packet count value is reset, whether the receiving function reexamining each network interface is closed, if be closed, then open pent receiving function, when the receiving data stream amount of network interface is greater than set point, automatically close the data receiver function of this network interface.
Further, be provided with the function interface checking network interface receiving function in network port driving module, this interface is called in timing, if the receiving function of normal network interface is closed, then opens the receiving function of this network interface.
Further, described cpu load monitor task task excitation is mainly carried out to the Multi-netmouth process layer IED of automatic network, in the embedded OS that it uses, after creating the main task of IED, then creates the task of a task priority lower than main task.
Transformer station process layer IED network pressure control device of the present invention comprises:
Cpu load monitor task module, is located in embedded OS, and task rank is lower than the rank of IED main task, and task is performed by dormancy timing;
Network port driving module, comprising and receives data packet count module, for receiving data packet count, if the count value of the data packet count module of network interface is greater than set point, then closing the data receiver function of this network interface;
Described cpu load monitor task module is connected with network port driving module communication.
Further, described network port driving module also comprises interface function module, resetting and checking whether the receiving function of this network interface is closed, if the receiving function of normal network interface is closed, then opening the receiving function of this network interface for receiving data packet count value.
Transformer station process layer IED network pressure control method of the present invention and device, the task of the process layer IED of Multi-netmouth is utilized all to carry out the feature of automatic network, larger in the receiving data stream amount of some network interfaces, cpu load is caused to increase, during device cisco unity malfunction, automatically the data receiver function of this network interface is closed, to reduce this network interface network pressure greatly on the impact of other network interface and whole device.The present invention is by controlling the flow of single network interface, guarantee that in intelligence, terminal equipment is when the network pressure of a network interface is very large, the function of other network interfaces is unaffected, under having stopped severe network environment, the possibility of intelligent terminal tripping, ensure that equipment reliability of operation.
Accompanying drawing explanation
Fig. 1 is the functional schematic that single network port driving need realize.
Fig. 2 is the flow chart that low priority task performs.
Embodiment
Transformer station process layer IED network pressure control device comprises cpu load monitor task module and the network port driving module of communication connection.
In the embedded OS of device, set up the cpu load monitor task module that priority is minimum, this task module only just can be performed when other task suspensions of CPU.This task is when performing, and the count value that each network interface is called in timing resets interface, the data packet count number of network is reset, prevents network interface from closing data receiver function under normal circumstances.Meanwhile, the function interface checking network interface receiving function is called in timing, after network interface is closed because of Traffic Anomaly, opens receiving function, recovers the basic function of network interface.
Increase in the network port driving module of the network driver layer of device and receive data packet count module and interface function module, receive data packet count module for receiving data packet count, if the count value of the data packet count module of network interface is greater than set point, then close the data receiver function of this network interface; Interface function module, resets for receiving data packet count value and checks whether the receiving function of this network interface is closed, if the receiving function of normal network interface is closed, then opening the receiving function of this network interface.
Transformer station process layer IED network pressure control method arranges to receive data packet count module in network port driving module, cpu load monitor task is performed by dormancy timing, during mission-enabling, the count value calling network port driving resets interface, reception data packet count value is reset, whether the receiving function reexamining each network interface is closed, if be closed, then open pent receiving function, when the receiving data stream amount of network interface is greater than set point, automatically close the data receiver function of this network interface.
Be provided with the function interface checking network interface receiving function in network port driving module, this interface is called in timing, if the receiving function of normal network interface is closed, then opens the receiving function of this network interface.
For Fig. 1, Fig. 2, compress control method and device are described in detail.
Following functions module is increased: independently receive packet number tally function module in each network port driving module, assuming that count value is a, network interface often receives a packet, and count value a adds 1, closes the data receiver function of this network interface when count value a is greater than 200.
An interface function fun module is increased in each network port driving module, realize following functions: reception packet number a is reset, check whether the receiving function of this network interface is closed, if the receiving function of network interface is closed, then open the receiving function of this network interface.
The task tsk of a lowest priority is increased at the embedded platform of device, following functions is realized: the interface function fun calling once all network interfaces every 10ms in this task, each network interface is received packet number a reset, and check whether the receiving function of each network interface is closed, if the receiving function of network interface is closed, then open the receiving function of this network interface.
Transformer station process layer IED network pressure control method of the present invention and device are not monitored definite network traffics, the behavior of Shi Caihui to network interface that have an impact of the performance of reception to device when network traffics is only had to control, therefore the time interval of the definite value of count value and low priority task determine according to the application of actual device, in this example, time interval 10ms determined according to the response time of device task, the device of namely of short duration 10ms does not respond and can not produce very serious consequence to device performance, the definite value of count value is determined by the data traffic of device network interface time normal, device under normal circumstances, the maximum bag number that 10ms receives is no more than 100, retain the allowance of 50%, be set to 200.
Claims (3)
1. a transformer station process layer IED network pressure control method, the method is applied to a kind of control device, this device comprises cpu load monitor task module and network port driving module, described cpu load monitor task module is connected with network port driving module communication, it is characterized in that, the method arranges to receive data packet count module in network port driving module, cpu load monitor task is performed by dormancy timing, during mission-enabling, the count value calling network interface resets interface, reception data packet count value is reset, whether the receiving function reexamining each network interface is closed, if be closed, then open pent receiving function, when the receiving data stream amount of network interface is greater than set point, automatically the data receiver function of this network interface is closed, the cpu load monitor task module that priority is minimum is set up in the embedded OS of described device, this task module only just can be performed when other task suspensions of CPU, the time interval that the described count value calling network interface resets interface was determined according to the response time of described device task.
2. method according to claim 1, is characterized in that, is provided with the function interface checking network interface receiving function in network port driving module, and this interface is called in timing, if the receiving function of normal network interface is closed, then opens the receiving function of this network interface.
3. method according to claim 1 and 2, it is characterized in that, described cpu load monitor task task excitation is mainly carried out to the Multi-netmouth process layer IED of automatic network, in the embedded OS that it uses, after creating the main task of IED, then create the task of a task priority lower than main task.
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| CN201110429664.6A CN102523120B (en) | 2011-12-20 | 2011-12-20 | Transformer station process layer IED network pressure control method |
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| CN102523120B true CN102523120B (en) | 2015-08-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1917477A (en) * | 2006-09-14 | 2007-02-21 | 杭州华为三康技术有限公司 | Method and device of preventing interference of flow control frames |
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| US8706309B2 (en) * | 2010-04-10 | 2014-04-22 | Schweitzer Engineering Laboratories Inc | Systems and method for obtaining a load model and related parameters based on load dynamics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1917477A (en) * | 2006-09-14 | 2007-02-21 | 杭州华为三康技术有限公司 | Method and device of preventing interference of flow control frames |
Non-Patent Citations (3)
| Title |
|---|
| Modelling and Simulation for Performance Evaluation of IEC61850-Based Substation Communication Systems;Tarlochan S.Sidhu等;《IEEE TRANSACTIONS ON POWER DELIVERY》;20070702;第22卷(第3期);第1482-1489页 * |
| 曹津平等.数字化变电站过程层的通信技术研究.《电力系统保护与控制》.2008,第36卷(第12期),第60-68页. * |
| 朱来强等.数字化变电站中广播风暴的防治.《电力自动化设备》.2010,第30卷(第11期),第98-100页. * |
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