CN111010289B - Panoramic network configuration detection method for in-situ substation - Google Patents

Abstract

The invention discloses a panoramic network configuration detection method for a local substation, which comprises a network alarm information judgment process and a network configuration abnormity positioning diagnosis process. The invention effectively manages the in-situ substation panoramic network, associates related information with the event occurrence time sequence by combining the SCD model file and the wave recording function, sequentially displays all network message interaction conditions related to the whole process of substation events, faults and operation, quickly positions fault IEDs by gradually tracking network messages and provides the fault IEDs for diagnosing the faults, thereby providing the application of operation, maintenance and overhaul meeting the intelligent property.

Description

Panoramic network configuration detection method for in-situ substation

Technical Field

The invention relates to a network detection configuration method for an intelligent substation, in particular to a panoramic network configuration detection method for a local substation.

Background

With the deep popularization of intelligent substations, on-site substations are produced at present, and the networking and informatization results of various types of substations generate a large amount of relevant information and need to be managed by adopting an advanced information processing method. The internal state, interface communication, network flow and other real-time information of the network of the existing novel on-site substation system are difficult to embody, and field personnel cannot predict when the network fails to work so as to influence the operation safety of the system. Therefore, the maintenance method of the traditional intelligent substation cannot be simply followed, but the necessary monitoring, detection and analysis are carried out on the network states related to the operation, maintenance and maintenance of the intelligent substation, and the hidden danger of the virtual secondary circuit in the operation of the substation is avoided.

Disclosure of Invention

In order to solve the problem caused by the fact that the traditional intelligent substation is overhauled and cannot be monitored in time, the invention provides a panoramic network configuration detection method for a local substation. The method can timely know the abnormal events of the network in the on-site substation, can help to find potential defects in operation by developing network performance and real-time monitoring, achieves the aims of optimizing design, improving performance, reducing redundancy and simplifying configuration by timely positioning, alarming, uploading and taking correct processing measures, and powerfully improves the efficiency and the reliability of network configuration management and control of a new generation of on-site substation.

The invention provides the following technical scheme:

a panoramic network configuration detection method for a local substation comprises a network alarm information judgment process and a network configuration abnormal positioning diagnosis process, and S1, the network alarm information judgment process:

(1) after the main network is detected to be broken and the network is switched, when the GOOSE message transmission time is larger than a set value, a double-network broken link alarm is reported;

(2) detecting that the next frame of GOOSE message is not received within 2 times of the Time allowed to live (Time all to live) of the received message, and reporting a network broken link alarm;

(3) when the configuration inconsistency of the received message is detected during GOOSE communication, reporting a GOOSE configuration error;

(4) when a communication network fault is detected, reporting a communication network alarm;

(5) detecting the fault of the GOOSE switch, and reporting the alarm of the GOOSE switch;

(6) when the indexes such as optical fiber transmission loss and the like are detected to exceed a set value, an optical fiber alarm is reported;

(7) when the fault of the network monitoring management equipment is detected, the network monitoring management equipment reports an alarm;

s2, network configuration abnormal positioning diagnosis process:

(1) analyzing the SCD and forming an association relation between IEDs of the intelligent substation, a virtual terminal list under the IEDs and virtual channel information;

(2) the high-performance data processing online terminal based on the PF _ RING technology analyzes event alarm information when monitoring a fault or a transformer substation event by acquiring station control layer network and process layer network data in real time;

(3) the selected IED obtains virtual terminal connection information from the SCD file, the actions and events in the message are classified and extracted, the action events in the transformer substation are arranged according to the time sequence, and various communication messages (GOOSE, MMS and SMV), events and alarms among all associated IEDs detected by the system are displayed according to the time sequence.

Furthermore, the station control layer network configuration detection function is realized by a substation server, the server has at least two sockets, one Socket is responsible for monitoring a connection request sent by a client and is not responsible for communicating with the requested client, and the other Socket is responsible for creating a Socket for communicating with the requested client when the server successfully receives the client.

In the above technical solution, the step of establishing data intercommunication with the client by the server is as follows:

(1) the server side applies for a Socket for monitoring, binds to an IP address and a port, simultaneously starts monitoring, waits for accepting connection of the client side, and creates a Socket for communicating with the connected client side when the connection exists;

(2) the server side starts a thread for monitoring the connection request of the client side and waits for the connection of the next client;

(3) the server end closes the cross-thread operation check of the text box and opens the monitoring socket to obtain an IP address object in the text box;

(4) a server side creates a network node object containing an IP and a port, and binds a socket responsible for monitoring to the only IP and the port;

(5) the server side creates a thread responsible for monitoring, transmits a monitoring method and sets the length of a monitoring queue;

(6) the server side stores all sockets responsible for communicating with the client side, and stores all threads responsible for calling a communication socket method;

(7) the method for monitoring the client request by the server side continuously monitors the connection request of a new client;

(8) once monitoring the request of the client, the server returns a socket responsible for communicating with the client, and adds an IP port character string of the client to the list control as the unique identifier of the client;

(9) a socket object communicated between the server and the client is added to the key-value pair set, and an IP port of the client is used as a key;

(10) a server side creates a communication thread, starts the thread and transmits parameters for a method to be called by the thread;

(11) the server stores the threads in the dictionary, so that the function of 'kicking people' is conveniently performed;

(12) the server side and the client side are connected successfully.

Compared with the prior art, the invention has the beneficial effects that: the invention effectively manages the in-situ substation panoramic network, associates related information with the event occurrence time sequence by combining the SCD model file and the wave recording function, sequentially displays all network message interaction conditions related to the whole process of substation events, faults and operation, quickly positions fault IEDs by gradually tracking network messages and provides the fault IEDs for diagnosing the faults, thereby providing the application of operation, maintenance and overhaul meeting the intelligent property.

Drawings

Fig. 1 is a flow chart of the network alarm information determination for the on-site substation according to the present invention.

FIG. 2 is a flow chart of the present invention for diagnosing network configuration anomaly location.

Fig. 3 is a flow chart of the present invention for establishing data interworking between the server and the client.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention relates to a panoramic network configuration detection method for a local substation, which comprises a network alarm information judgment process and a network configuration abnormal positioning diagnosis process, S1, a network alarm information judgment process, a specific judgment flow is shown in figure 1,

(1) after the main network link breakage is detected and the network is switched, when the GOOSE message transmission time is larger than a set value, a double-network link breakage alarm is reported;

(2) detecting that the next frame of GOOSE message is not received within 2 times of the Time allowed to live (Time all to live) of the received message, and reporting a network broken link alarm;

(3) when the configuration inconsistency of the received message is detected during GOOSE communication, reporting a GOOSE configuration error;

(4) when a communication network fault is detected, reporting a communication network alarm;

(5) detecting the fault of the GOOSE switch, and reporting the alarm of the GOOSE switch;

(6) when the indexes such as optical fiber transmission loss and the like are detected to exceed a set value, an optical fiber alarm is reported;

(7) when the fault of the network monitoring management equipment is detected, reporting the alarm of the network management equipment;

s2, a network configuration abnormal location diagnosis process, the specific diagnosis method is shown in FIG. 2,

(1) analyzing the SCD and forming an association relation between IEDs of the intelligent substation, a virtual terminal list under the IEDs and virtual channel information;

(2) the high-performance data processing online terminal based on the PF _ RING technology analyzes event alarm information when monitoring a fault or a transformer substation event by acquiring station control layer network and process layer network data in real time;

(3) the selected IED acquires virtual terminal connection information from the SCD file, classifies and extracts actions and events in the message, arranges the action events in the transformer substation according to the time sequence, and displays various communication messages (GOOSE, MMS and SMV), events and alarms among all associated IEDs detected by the system according to the time sequence.

The station control layer network configuration detection function is realized by a substation server, the server has at least two sockets, one of the two sockets is responsible for monitoring a connection request sent by a client but not for communicating with the requested client, and the other Socket is responsible for creating a Socket for communicating with the requested client when the server successfully receives the client.

In the above technical solution, referring to fig. 3, the steps of establishing data intercommunication with the client by the server are as follows:

(1) the server side applies for a Socket for monitoring, binds to an IP address and a port, simultaneously starts monitoring, waits for accepting connection of the client side, and creates a Socket for communicating with the connected client side when the connection exists;

(2) the server side starts a thread for monitoring the connection request of the client side and waits for the connection of the next client;

(3) the server end closes the cross-thread operation check of the text box and opens the monitoring socket to obtain an IP address object in the text box;

(4) a server side creates a network node object containing an IP and a port, and binds a socket responsible for monitoring to the only IP and the port;

(5) the server side creates a thread responsible for monitoring, transmits a monitoring method and sets the length of a monitoring queue;

(6) the server side stores all sockets responsible for communication with the client side and stores all threads responsible for calling a communication socket method;

(7) the method for monitoring the client request by the server side continuously monitors the connection request of a new client;

(8) once monitoring the request of the client, the server returns a socket responsible for communicating with the client, and adds an IP port character string of the client to the list control as the unique identifier of the client;

(9) a socket object communicated between the server and the client is added to the key-value pair set, and an IP port of the client is used as a key;

(10) a server side creates a communication thread, starts the thread and transmits parameters for a method to be called by the thread;

(11) the server stores the threads in the dictionary, so that the function of 'kicking people' is conveniently performed;

(12) the server and the client are successfully connected.

The former first generation intelligent transformer substation is limited by the objective condition of equipment modeling deficiency, and the network alarm information mainly focuses on the error alarm of occurrence of protection action events, heartbeat message interruption, initialization, and inconsistent communication multicast with SCD file setting. In the invention, after the new equipment of the second generation on-site intelligent substation is modeled, alarms such as switch alarms, optical fiber alarms and network management equipment are added.

Fig. 2 of the present invention provides an application of emerging computer technology to on-site intelligent substation message capture. The PF-RING realizes an efficient message capturing mechanism through memory sharing, and is a Linux kernel-level-based efficient data packet capturing technology researched by Luca. In short, PF-RING is a high-speed packet capture library through which it is possible to implement a general purpose PC computer into an efficient and inexpensive network measurement tool box for packet and current network traffic analysis and manipulation. Most of the time, the CPU is used in the process of sending the data packet received by the network card to the user space through the data structure queue of the kernel. That is, from the network card to the kernel, and then from the kernel to the user space, a large amount of CPU time is spent in these two steps, so that no other time is used for further processing of the data packet. The efficiency of receiving messages is greatly limited by multiple copies of the sk _ buff structure in the transmission process and repeated system calls related to a user space and a kernel space, and especially the receiving influence on small messages is more obvious. The core solution proposed by PF _ RING is to reduce the number of copies of the message during transmission.

The step of fig. 3 provides that the panoramic network configuration detection device is a server side, the in-situ intelligent substation equipment is a client side, and the step includes a method for establishing contact between the server side and the client side, and the socket is a very important new characteristic in the HTML5 specification, and the existence of the socket can allow a user to realize two-way communication in a browser. The method is mainly characterized in that at least 2 sockets are established, one socket is used for monitoring a connection request sent by a client side but not for communicating with the requested client side by a server side, and the other socket is used for establishing another client side for the request for communicating at the server side when the server side successfully receives the client side, so that the problem of continuous monitoring is solved.

The switch that adopts in the present transformer substation reliability is high, the probability that appears unusually is low, but the network operation risk that can't thoroughly avoid existence.

The invention effectively manages the in-situ substation panoramic network, associates related information with the event occurrence time sequence by combining the SCD model file and the wave recording function, sequentially displays all network message interaction conditions related to the whole process of substation events, faults and operation, quickly positions fault IEDs by gradually tracking network messages and provides the fault IEDs for diagnosing the faults, thereby providing the application of operation, maintenance and overhaul meeting the intelligent property.

The method and the device can master the problems in the network operation of the transformer substation, provide a beneficial tool for improving the network design, improving the network performance and avoiding the network risk in the future, and help to detect the running equipment state and locate the problems.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. A panoramic network configuration detection method for a local substation is characterized by comprising a network alarm information judgment process and a network configuration abnormity positioning diagnosis process,

s1, network alarm information judgment:

(1) after the main network link breakage is detected and the network is switched, when the GOOSE message transmission time is larger than a set value, a double-network link breakage alarm is reported;

(2) detecting that the next frame of GOOSE message is not received within 2 times of the allowable survival time of the received message, and reporting a network broken link alarm;

(3) when the configuration inconsistency of the received message is detected during GOOSE communication, reporting a GOOSE configuration error;

(4) when a communication network fault is detected, reporting a communication network alarm;

(5) detecting the fault of the GOOSE switch, and reporting the alarm of the GOOSE switch;

(6) when the optical fiber transmission loss index is detected to exceed a set value, an optical fiber alarm is given;

(7) when the fault of the network monitoring management equipment is detected, the network monitoring management equipment reports an alarm;

s2, network configuration abnormal positioning diagnosis process:

(1) analyzing the SCD and forming an association relation between IEDs of the intelligent substation, a virtual terminal list under the IEDs and virtual channel information;

(2) the high-performance data processing online terminal based on the PF _ RING technology analyzes event alarm information when monitoring a fault or a transformer substation event by acquiring station control layer network and process layer network data in real time;

(3) acquiring virtual terminal connection information from an SCD file by the selected IED, classifying and extracting actions and events in the message, arranging the action events in the transformer substation according to a time sequence, and displaying various communication messages, events and alarms among all associated IEDs detected by the system according to the time sequence;

the method comprises the steps that a server side and a client side are connected, and the existence of the Socket allows a user to realize two-way communication in a browser.

2. The panoramic network configuration detection method for the on-site substation according to claim 1, characterized in that: one is responsible for monitoring the connection request sent by the client but not responsible for communicating with the requesting client, and the other is responsible for creating a Socket for communicating with the requesting client when the server successfully receives the client.

3. The panoramic network configuration detection method for the on-site substation according to claim 2, characterized in that: the steps of the server side establishing data intercommunication with the client side are as follows:

(1) the server side applies for a Socket for monitoring, binds to an IP address and a port, simultaneously starts monitoring, waits for accepting connection of the client side, and creates a Socket for communicating with the connected client side when the connection exists;

(2) the server side starts a thread for monitoring the connection request of the client side and waits for the connection of the next client;

(3) the server end closes the cross-thread operation check of the text box and opens the monitoring socket to obtain an IP address object in the text box;

(4) a server side creates a network node object containing an IP and a port, and binds a socket responsible for monitoring to the only IP and the port;

(5) the server side creates a thread responsible for monitoring, transmits a monitoring method and sets the length of a monitoring queue;

(6) the server side stores all sockets responsible for communicating with the client side, and stores all threads responsible for calling a communication socket method;

(7) the method for monitoring the client request by the server side continuously monitors the connection request of a new client;

(8) once monitoring the request of the client, the server returns a socket responsible for communicating with the client, and adds an IP port character string of the client to the list control as the unique identifier of the client;

(9) a socket object communicated between the server and the client is added to the key-value pair set, and an IP port of the client is used as a key;

(10) a server side creates a communication thread, starts the thread and transmits parameters for a method to be called by the thread;

(11) the server stores the threads in the dictionary, so that the function of 'kicking people' is conveniently performed;

(12) the server and the client are successfully connected.

Images