CN116074184A - Network fault early warning system of power dispatching center - Google Patents
Network fault early warning system of power dispatching center Download PDFInfo
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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Abstract
The invention discloses a network fault early warning system of a power dispatching center, which relates to the technical field of power grid communication fault early warning and comprises a communication equipment information collection module, a real-time communication data collection module, a network fault analysis module, a fault positioning module and a fault response module; the method comprises the steps of setting a communication equipment information collection module to collect equipment information needing data communication in a power grid area in advance; the real-time communication data collection module is used for collecting data receiving and transmitting conditions of all communication equipment in the power network in real time; setting a network fault analysis module to analyze whether network faults occur in the power network in real time; setting a fault positioning module to analyze the position of the network fault and the reason of the fault; setting a fault response module to respond to the attack after the electric power network encounters the network attack; the positioning and the reason analysis of the network communication faults are realized, and the protection of the communication safety of the power grid is enhanced.
Description
Technical Field
The invention belongs to the field of power networks, relates to a network fault early warning technology, and particularly relates to a power dispatching center network fault early warning system.
Background
The power dispatching automation work plays an important role in the development process of the whole power enterprise, and is related to whether the power generation, the transmission and the use can be smoothly carried out or not, and the power supply quality of the enterprise can be effectively improved, so that the economic benefit of the enterprise is guaranteed. The current power dispatching work is planned and dispatched by a power dispatching center through a power network in a unified way, so that the safety and fluency of the network and the timeliness of network fault positioning are ensured for the dispatching center, which is an important work related to life production;
most of the current power dispatching centers have better fault warning for faults of the power grid, but fewer devices with communication faults in the power grid are positioned, reasons of hardware or software are analyzed, and further malicious network DDOS attack behaviors in the software reasons are pre-warned and responded;
therefore, a network fault early warning system of the power dispatching center is provided.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the network fault early warning system of the power dispatching center, which realizes the positioning and the reason analysis of network communication faults and strengthens the protection of the communication safety of a power grid.
In order to achieve the above purpose, the present invention provides a network fault early warning system of a power dispatching center, which comprises a communication equipment information collection module, a real-time communication data collection module and a network fault analysis module;
the communication equipment information collection module is mainly used for collecting equipment information needing to be subjected to data communication in a power grid area needing to be subjected to power dispatching of the power dispatching center in advance;
the equipment for carrying out data communication comprises terminal equipment and data exchange equipment in a power grid area to be scheduled; the terminal equipment can comprise a distribution frame, an optical transceiver, an electric transceiver and the like; the data exchange equipment is intermediate equipment for connecting each terminal equipment with the regional power network and can comprise a switch or a router;
further, the device information includes a device name, a device number, and a regional subnet number of each device; the equipment number comprises IP addresses of the terminal equipment and the data exchange equipment, wherein the IP addresses can comprise management IP, equipment IP, interconnection IP, service IP and the like; the regional subnet number is the number of the regional subnet to which each device belongs; it can be understood that part of terminal devices share the same data exchange device to forward data, and the data exchange device multicasts the data and then uniformly forwards the data; therefore, a plurality of terminal devices and a data exchange device can generate a regional subnet;
the communication equipment information collection module sends equipment information for data communication to the network fault analysis module;
the real-time communication data collection module is mainly used for collecting data receiving and transmitting conditions of all communication equipment in the power network in real time;
the mode of the real-time communication data collection module for collecting the data receiving and transmitting conditions of the communication equipment in real time is as follows:
the power dispatching center records control instructions sent by the control center to each terminal device or regional subnetwork in real time, response data returned by the terminal device, power data or monitoring data sent by the terminal device and routing data for data forwarding; it can be understood that the data sent by the terminal equipment are summarized by the data exchange equipment and then forwarded to the power dispatching center;
the real-time communication data collection module sends the data receiving and transmitting conditions of the communication equipment collected in real time to the network fault analysis module;
the network fault analysis module is mainly used for analyzing whether network faults occur in the power network in real time;
the network fault analysis module analyzes whether the network fault occurs in the power network in the following manner:
a response time threshold t1, a first transmission interval time threshold t2 and a second transmission interval time threshold t3 are set in advance according to actual experience, a control instruction is transmitted at a power dispatching center, and terminal equipment which does not return response data is judged to have network faults after the response time threshold t1 passes; further, if the data sent by a certain terminal device or data exchange device is received and then the first sending interval time threshold t2 or the second sending interval time threshold t3 is separated, the data sent by the terminal device or the data exchange device is not received again, and then the network failure of the terminal device or the data exchange device is judged;
the system also comprises a fault positioning module and a fault response module;
the network fault analysis module sends the judging result of the network fault to the fault positioning module;
the fault locating module is mainly used for analyzing the position of the network fault and the reason of the fault;
the fault locating module analyzes the network fault occurrence position and the fault reason and comprises the following steps:
step S1: if the judging result is that the terminal equipment has network faults, a first fault proportion threshold value x1 is further set according to actual experience, the number of the same regional subnets in the terminal equipment with the network faults is judged, the ratio of the number of the terminal equipment with the network faults in the regional subnets to the total number of the terminal equipment is further calculated, and if the ratio is larger than the first fault proportion threshold value x1, the network faults of the data exchange equipment in the regional subnets are judged; otherwise, executing the step S3;
step S2: setting a second fault proportion threshold value x2 according to practical experience, recursively judging whether the same number of the upper layer data exchange equipment exists in the routing data of the area subnets where the terminal equipment with network faults exists, if the same number of the upper layer data exchange equipment exists, calculating the ratio of the number of the area subnets with network faults forwarded by the upper layer data exchange equipment to the number of the total forwarded area subnets, and if the ratio is larger than the second fault proportion threshold value, judging that the upper layer data exchange equipment has network faults; otherwise, judging that the terminal equipment has network faults;
step S3: further judging whether the ratio in the step S1 or the step S2 is 100%, if yes, judging that the data exchange equipment of the regional subnetwork or the upper layer data exchange equipment has hardware faults, otherwise, judging that the software faults occur;
step S4: sending early warning information to a manager of the power dispatching center, wherein the early warning information comprises the reasons of software or hardware for positioning equipment with network faults and faults;
step S5: for software network faults, calculating the diffusion speed of the network faults; preferably, the network fault spreading speed is a unit increasing speed of the number of terminal devices or data exchange devices in which network faults occur in the power network;
setting a terminal equipment fault quantity threshold y1, a data exchange equipment fault quantity threshold y2, a terminal equipment fault quantity increase speed threshold z1 and a data exchange equipment fault quantity increase speed threshold z2 according to the actual size of the power grid in advance;
when the fault of the terminal equipment in the power grid is larger than a fault quantity threshold value y1 of the terminal equipment, or the fault quantity increasing speed of the terminal equipment is larger than a fault quantity increasing speed threshold value z1 of the terminal equipment, or the fault quantity of the data exchange equipment is larger than a fault quantity threshold value y2 of the data exchange equipment, or the fault quantity increasing speed of the data exchange equipment is larger than a fault quantity increasing speed threshold value z2 of the data exchange equipment, judging that the power network is attacked by the network, and marking the terminal equipment and the data exchange equipment with network communication faults as fault equipment;
the fault positioning module sends network attack early warning information to the fault response module;
the fault response module is mainly used for carrying out attack response after the electric power network encounters network attack;
the fault response module responds to the network attack in the following way:
presetting a packet loss probability f, taking a data exchange device marked as a fault device in a current power grid as a pre-control device, and discarding each data packet according to the packet loss probability f for each upper layer data exchange device which receives data sent by the data exchange device with communication fault; wherein,
wherein f1 is the number of data sender devices forwarded by the data exchange device in the last unit time, and f2 is the total number of data sender devices received by the data exchange device; reducing the fault while ensuring the dispatching capability of the power gridThe amount of data forwarded by the data switching device of the barrier.
Compared with the prior art, the invention has the beneficial effects that:
the invention collects the equipment information of the electric network area needing to be scheduled by the electric power dispatching center, records the control instruction and the response data returned by the terminal equipment, the data sent by the terminal equipment and the route data forwarded by the data in real time, judges whether the equipment has communication faults according to the response time or the sending interval time of the data of the terminal equipment or the data exchange equipment, further positions the fault equipment and analyzes the software and hardware faults according to the manifestation form of the fault of the terminal equipment or the fault of the data exchange equipment, analyzes whether the fault equipment is network attack behavior for the software faults, and gives early warning and attack response to the network attack;
compared with the traditional power grid communication fault early warning, the method has the advantages that the fault position and the software and hardware fault reasons are judged according to the equipment fault form, so that maintenance personnel can maintain the power grid communication fault early warning conveniently; and further, the DDOS type network attack of external attack is identified and responded in an early warning manner, so that the protection of the communication safety of the power grid is enhanced.
Drawings
FIG. 1 is a diagram showing the connection relationship between each module of a fault early warning system according to a first embodiment of the present invention;
fig. 2 is a diagram illustrating a connection relationship between each module of the fault early warning system according to the second embodiment of the present invention.
Description of the embodiments
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, in a first embodiment of the present invention, a network fault early warning system for a power dispatching center includes a communication device information collecting module, a real-time communication data collecting module, and a network fault analyzing module;
the communication equipment information collection module is mainly used for collecting equipment information needing to be subjected to data communication in a power grid area needing to be subjected to power dispatching of the power dispatching center in advance;
preferably, the equipment needing to perform data communication comprises terminal equipment and data exchange equipment in the power grid area to be scheduled; the terminal equipment can comprise a distribution frame, an optical transceiver, an electric transceiver and the like; the data exchange equipment is intermediate equipment for connecting each terminal equipment with the regional power network and can comprise a switch or a router;
further, the device information includes a device name, a device number, and a regional subnet number of each device; the equipment number comprises IP addresses of the terminal equipment and the data exchange equipment, wherein the IP addresses can comprise management IP, equipment IP, interconnection IP, service IP and the like; the regional subnet number is the number of the regional subnet to which each device belongs; it can be understood that part of terminal devices share the same data exchange device to forward data, and the data exchange device multicasts the data and then uniformly forwards the data; therefore, a plurality of terminal devices and a data exchange device can generate a regional subnet;
the communication equipment information collection module sends equipment information for data communication to the network fault analysis module in an electric or wireless network mode;
the real-time communication data collection module is mainly used for collecting data receiving and transmitting conditions of all communication equipment in the power network in real time;
in a preferred embodiment, the real-time communication data collection module collects the data transceiving conditions of the real-time communication device in a manner that:
it can be understood that the power scheduling center coordinates the power planning data of the whole power grid, so that the operation condition of each terminal device or regional subnetwork needs to be monitored in real time;
the power dispatching center records control instructions sent by the control center to each terminal device or regional subnetwork in real time, response data returned by the terminal device, power data or monitoring data sent by the terminal device and routing data for data forwarding; it can be understood that the data sent by the terminal equipment are summarized by the data exchange equipment and then forwarded to the power dispatching center;
the real-time communication data collection module sends the data receiving and transmitting conditions of the communication equipment collected in real time to the network fault analysis module in an electric or wireless network mode;
the network fault analysis module is mainly used for analyzing whether network faults occur in the power network in real time;
in a preferred embodiment, the network fault analysis module analyzes whether a network fault occurs in the power network in the following manner:
a response time threshold t1, a first transmission interval time threshold t2 and a second transmission interval time threshold t3 are set in advance according to actual experience, a control instruction is transmitted at a power dispatching center, and terminal equipment which does not return response data is judged to have network faults after the response time threshold t1 passes; further, if the data sent by a certain terminal device or data exchange device is received and then the first sending interval time threshold t2 or the second sending interval time threshold t3 is separated, the data sent by the terminal device or the data exchange device is not received again, and then the network failure of the terminal device or the data exchange device is judged;
according to the embodiment, by introducing the response time threshold and the transmission interval time threshold, after the terminal equipment or the data exchange equipment exceeds the response time threshold and the transmission interval time threshold, the network fault is judged to occur, and the terminal equipment and the data exchange equipment which have network faults are ensured to be found in the first time;
as shown in fig. 2, in the second embodiment of the present invention, the design is further improved based on the first embodiment, so as to further analyze the cause of the network failure and perform enhanced early warning on the network attack from the outside;
the network fault early warning system of the power dispatching center further comprises a fault positioning module and a fault response module;
the network fault analysis module sends the judging result of the network fault to the fault positioning module in an electric or wireless network mode;
the fault locating module is mainly used for analyzing the position of the network fault and the reason of the fault;
in a preferred embodiment, the fault location module analyzes the network fault occurrence location and the fault cause, including the steps of:
step S1: if the judging result is that the terminal equipment has network faults, a first fault proportion threshold value x1 is further set according to actual experience, the number of the same regional subnets in the terminal equipment with the network faults is judged, the ratio of the number of the terminal equipment with the network faults in the regional subnets to the total number of the terminal equipment is further calculated, and if the ratio is larger than the first fault proportion threshold value x1, the network faults of the data exchange equipment in the regional subnets are judged; otherwise, executing the step S3;
step S2: setting a second fault proportion threshold value x2 according to practical experience, recursively judging whether the same number of the upper layer data exchange equipment exists in the routing data of the area subnets where the terminal equipment with network faults exists, if the same number of the upper layer data exchange equipment exists, calculating the ratio of the number of the area subnets with network faults forwarded by the upper layer data exchange equipment to the number of the total forwarded area subnets, and if the ratio is larger than the second fault proportion threshold value, judging that the upper layer data exchange equipment has network faults; otherwise, judging that the terminal equipment has network faults;
step S3: further judging whether the ratio in the step S1 or the step S2 is 100%, if yes, judging that the data exchange equipment of the regional subnetwork or the upper layer data exchange equipment has hardware faults, otherwise, judging that the software faults occur; further, if the terminal equipment has network failure, judging the reason of the network failure manually;
step S4: sending early warning information to a manager of the power dispatching center, wherein the early warning information comprises the reasons of software or hardware for positioning equipment with network faults and faults;
step S5: for software network faults, calculating the diffusion speed of the network faults; preferably, the network fault spreading speed is a unit increasing speed of the number of terminal devices or data exchange devices in which network faults occur in the power network;
setting a terminal equipment fault quantity threshold y1, a data exchange equipment fault quantity threshold y2, a terminal equipment fault quantity increase speed threshold z1 and a data exchange equipment fault quantity increase speed threshold z2 according to the actual size of the power grid in advance;
when the fault of the terminal equipment in the power grid is larger than a fault quantity threshold value y1 of the terminal equipment, or the fault quantity increasing speed of the terminal equipment is larger than a fault quantity increasing speed threshold value z1 of the terminal equipment, or the fault quantity of the data exchange equipment is larger than a fault quantity threshold value y2 of the data exchange equipment, or the fault quantity increasing speed of the data exchange equipment is larger than a fault quantity increasing speed threshold value z2 of the data exchange equipment, judging that the power network is attacked by the network, and marking the terminal equipment and the data exchange equipment with network communication faults as fault equipment;
the fault positioning module sends network attack early warning information to the fault response module in an electric or wireless network mode;
the fault response module is mainly used for carrying out attack response after the electric power network encounters network attack;
it can be appreciated that an important way for an external network attack to attack the power network to break down the power grid is to perform a DDOS attack, i.e. to send a large number of data packets to the power dispatching center, so that the power dispatching center loses the power grid control function; in the process, part of data exchange equipment receives excessive data in a short time, so that part of data packets sent by terminal equipment in an area subnet are lost;
in a preferred embodiment, the fault response module responds to the network attack in the following manner:
presetting a packet loss probability f, taking a data exchange device marked as a fault device in the current power grid as a pre-control device, and for each power gridThe upper layer data exchange equipment which receives the data sent by the data exchange equipment with communication faults discards each data packet according to the packet loss probability f; wherein,
wherein f1 is the number of data sender devices forwarded by the data exchange device in the last unit time, and f2 is the total number of data sender devices received by the data exchange device; so as to reduce the data quantity forwarded by the faulty data exchange equipment while ensuring the dispatching capability of the power grid.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (4)
1. The network fault early warning system of the power dispatching center is characterized by comprising a communication equipment information collection module, a real-time communication data collection module, a network fault analysis module, a fault positioning module and a fault response module; wherein, each module is connected by an electric and/or wireless network mode;
the communication equipment information collection module is used for collecting equipment information needing to be subjected to data communication in a power grid area in advance; transmitting the equipment information for data communication to a network fault analysis module;
the real-time communication data collection module is used for collecting data receiving and transmitting conditions of all communication equipment in the power network in real time; transmitting the data receiving and transmitting conditions of the communication equipment collected in real time to a network fault analysis module;
the network fault analysis module is used for analyzing whether network faults occur in the power network in real time; the judging result of the network fault is sent to a fault positioning module;
the fault positioning module is used for analyzing the position of the network fault and the reason of the fault, and sending network attack early warning information to the fault response module when judging that the network attack in the software fault occurs;
the fault response module is used for carrying out attack response after the electric power network encounters network attack;
the network fault analysis module analyzes whether the network fault occurs in the power network in the following manner:
a response time threshold t1, a first transmission interval time threshold t2 and a second transmission interval time threshold t3 are set in advance according to actual experience, a control instruction is transmitted at a power dispatching center, and terminal equipment which does not return response data is judged to have network faults after the response time threshold t1 passes; further, if the data sent by a certain terminal device or data exchange device is received and then the first sending interval time threshold t2 or the second sending interval time threshold t3 is separated, the data sent by the terminal device or the data exchange device is not received again, and then the network failure of the terminal device or the data exchange device is judged;
the fault locating module analyzes the network fault occurrence position and the fault reason and comprises the following steps:
step S1: if the judging result is that the terminal equipment has network faults, a first fault proportion threshold value x1 is further set according to actual experience, the number of the same regional subnets in the terminal equipment with the network faults is judged, the ratio of the number of the terminal equipment with the network faults in the regional subnets to the total number of the terminal equipment is further calculated, and if the ratio is larger than the first fault proportion threshold value x1, the network faults of the data exchange equipment in the regional subnets are judged; otherwise, executing the step S3;
step S2: setting a second fault proportion threshold value x2 according to practical experience, recursively judging whether the same number of the upper layer data exchange equipment exists in the routing data of the area subnets where the terminal equipment with network faults exists, if the same number of the upper layer data exchange equipment exists, calculating the ratio of the number of the area subnets with network faults forwarded by the upper layer data exchange equipment to the number of the total forwarded area subnets, and if the ratio is larger than the second fault proportion threshold value, judging that the upper layer data exchange equipment has network faults; otherwise, judging that the terminal equipment has network faults;
step S3: judging whether the ratio in the step S1 or the step S2 is 100 percent, if yes, judging that hardware faults occur to data exchange equipment or upper layer data exchange equipment of the regional subnetwork, otherwise, judging that software faults occur;
step S4: sending early warning information to a manager of the power dispatching center, wherein the early warning information comprises the reasons of software or hardware for positioning equipment with network faults and faults;
step S5: for software network faults, calculating the diffusion speed of the network faults; the network fault diffusion speed is the unit growth speed of the number of terminal equipment or data exchange equipment with network faults in the power network;
setting a terminal equipment fault quantity threshold y1, a data exchange equipment fault quantity threshold y2, a terminal equipment fault quantity increase speed threshold z1 and a data exchange equipment fault quantity increase speed threshold z2 according to the actual size of the power grid in advance;
when the fault of the terminal equipment in the power grid is larger than a fault quantity threshold value y1 of the terminal equipment, or the fault quantity increasing speed of the terminal equipment is larger than a fault quantity increasing speed threshold value z1 of the terminal equipment, or the fault quantity of the data exchange equipment is larger than a fault quantity threshold value y2 of the data exchange equipment, or the fault quantity increasing speed of the data exchange equipment is larger than a fault quantity increasing speed threshold value z2 of the data exchange equipment, judging that the power network is attacked by the network, and marking the terminal equipment and the data exchange equipment with network communication faults as fault equipment;
the fault response module responds to the network attack in the following way:
presetting a packet loss probability f, taking a data exchange device marked as a fault device in a current power grid as a pre-control device, and discarding each data packet according to the packet loss probability f for each upper layer data exchange device which receives data sent by the data exchange device with communication fault; wherein,
wherein f1 is the number of data sender devices forwarded by the data exchange device in the last unit time, and f2 is the total number of data sender devices received by the data exchange device.
2. The power dispatching center network fault early warning system according to claim 1, wherein the equipment needing to perform data communication comprises terminal equipment and data exchange equipment in a power grid area to be dispatched; the data exchange device is an intermediate device for connecting each terminal device with the regional power network.
3. The power dispatching center network failure warning system of claim 1, wherein the equipment information includes equipment name, equipment number and area subnet number of each equipment.
4. The power dispatching center network fault early warning system according to claim 1, wherein the real-time communication data collection module collects data receiving and transmitting conditions of the communication equipment in real time by:
the power dispatching center records control instructions sent by the control center to each terminal device or regional subnetwork in real time, response data returned by the terminal device, power data or monitoring data sent by the terminal device and routing data for data forwarding.
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