CN112290680B - Electric power communication system capable of monitoring communication state - Google Patents

Electric power communication system capable of monitoring communication state Download PDF

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CN112290680B
CN112290680B CN202011155405.4A CN202011155405A CN112290680B CN 112290680 B CN112290680 B CN 112290680B CN 202011155405 A CN202011155405 A CN 202011155405A CN 112290680 B CN112290680 B CN 112290680B
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monitoring
communication
monitoring report
module
report
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CN112290680A (en
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吴金荣
余桂华
李锋
张哲斌
徐辉
张双双
杨迪
方彦霖
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Yuhang Branch Of Hangzhou Electric Power Design Institute Co ltd
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Yuhang Branch Of Hangzhou Electric Power Design Institute Co ltd
Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses an electric power communication system capable of monitoring communication state, comprising: the system comprises a communication system, a communication monitoring subsystem and a server; the communication monitoring subsystem includes: the monitoring report sending module is used for sending the monitoring report at fixed time and fixed point and marking the sending time point of the monitoring report; the monitoring report acquisition module is used for acquiring monitoring reports at fixed time and fixed point and marking the acquisition time points of the monitoring reports; the communication state analysis module is used for judging the communication state of the current communication line section by calculating the time difference between the sending time point and the collecting time point of the monitoring report; and the maintenance task generating module is used for generating a corresponding line maintenance task according to the monitoring report and directionally sending the generated line maintenance task to a corresponding maintainer terminal. The invention can realize the monitoring of the communication state and the caching of the power information, thereby well avoiding the data loss caused by the fault of the communication line.

Description

一种可监测通讯状态的电力通讯系统A power communication system capable of monitoring communication status

技术领域technical field

本发明涉及电力信息领域，具体涉及一种可监测通讯状态的电力通讯系统。The invention relates to the field of electric power information, in particular to an electric power communication system capable of monitoring communication status.

背景技术Background technique

目前，新能源站和变电站的综合自动化系统通常由各个场站的子系统组成，并与调度中心进行通讯。各个场站的子系统收集到场站端各设备的信息后上传给调度中心，调度中心对其获得的数据进行存储与分析，并通过各个场站的子系统对场站进行远程控制与监测，所以如果各个场站的子系统与调度中心发生通讯中断，则会造成各个场站的子系统与调度中心之间传输的数据流失以及调度中心对场站的实时监测失效。At present, the integrated automation system of new energy stations and substations is usually composed of subsystems of each station and communicates with the dispatch center. The subsystems of each station collect the information of the equipment at the station and upload it to the dispatch center. The dispatch center stores and analyzes the data obtained, and remotely controls and monitors the stations through the subsystems of each station. If the communication between the subsystems of each field station and the dispatch center is interrupted, it will cause the loss of data transmitted between the subsystems of each field station and the dispatch center and the failure of the real-time monitoring of the field station by the dispatch center.

发明内容SUMMARY OF THE INVENTION

为解决上述问题，本发明提供了一种可监测通讯状态的电力通讯系统，在可以实现通讯状态监测的同时，实现了电力信息的缓存，从而可以很好的避免由于通讯线路故障而造成的数据流失。In order to solve the above problems, the present invention provides a power communication system that can monitor the communication state, which can realize the cache of power information while monitoring the communication state, so that the data caused by the failure of the communication line can be well avoided. churn.

为实现上述目的，本发明采取的技术方案为：To achieve the above object, the technical scheme adopted in the present invention is:

一种可监测通讯状态的电力通讯系统，包括：A power communication system capable of monitoring communication status, comprising:

用于在电力系统各场站子系统与调度中心之间传递消息的通信系统；A communication system used to transmit messages between each station subsystem of the power system and the dispatch center;

用于监测通讯状态的通信监测子系统；Communication monitoring subsystem for monitoring communication status;

以及用于接收所述通信监测子系统传输的信息，并实现信息分类储存的服务器；and a server for receiving the information transmitted by the communication monitoring subsystem and implementing information classification and storage;

所述通信监测子系统包括：The communication monitoring subsystem includes:

监测报告发送模块，用于定时定点的发送监测报告，并实现监测报告发出时间点的标记；The monitoring report sending module is used to send monitoring reports at regular and fixed points, and realize the marking of the time points when monitoring reports are issued;

监测报告采集模块，用于定时定点的采集监测报告，并实现监测报告采集时间点的标记；The monitoring report collection module is used to collect monitoring reports at regular and fixed points, and realize the marking of monitoring report collection time points;

通讯状态分析模块，用于通过计算监测报告发出时间点和采集时间点之间的时间差来判定当前该段通讯线路的通讯状态；The communication state analysis module is used to determine the communication state of the current communication line by calculating the time difference between the time when the monitoring report is issued and the time when the monitoring report is collected;

监测报告编制模块，用于根据接收到的每一段通讯线路的通讯状态实现当前整条线路通讯状态报告的编制；The monitoring report compilation module is used to realize the compilation of the current communication status report of the entire line according to the received communication status of each communication line;

维修任务生成模块，用于根据所述监测报告生成对应的线路维修任务，并将生成的所述线路维修任务定向发送至对应的维护人员终端。A maintenance task generating module is configured to generate a corresponding line maintenance task according to the monitoring report, and send the generated line maintenance task to a corresponding maintenance personnel terminal in a directed direction.

进一步地，所述监测报告发送模块、所述监测报告采集模块均按阈值布设在通讯线路上，在非监测状态，所述监测报告发送模块和所述监测报告采集模块均处于休眠状态。Further, the monitoring report sending module and the monitoring report collecting module are all arranged on the communication line according to the threshold, and in the non-monitoring state, the monitoring report sending module and the monitoring report collecting module are both in a dormant state.

进一步地，所述监测报告采集模块只采集监测报告数据，其余数据直接通过，经通讯线路正常传输。Further, the monitoring report collection module only collects monitoring report data, and the rest of the data is directly passed through and normally transmitted through the communication line.

进一步地，所述监测报告发送模块所发送的监测报告内载其所在通讯线路的定位信息。Further, the monitoring report sent by the monitoring report sending module contains the positioning information of the communication line where the monitoring report is located.

进一步地，所述通讯状态分析模块通过将计算所得的时间差基于最邻近分类器与预设的通讯状态等级标准区间进行对比，从而得到当前通讯线路的通讯状态。Further, the communication state analysis module obtains the communication state of the current communication line by comparing the calculated time difference with the preset communication state level standard interval based on the nearest neighbor classifier.

进一步地，所述监测报告采集模块内载定时模块，在唤醒所述监测报告采集模块的同时唤醒所述定时模块，在预设的时间段内，若未接收到监测报告，则直接唤醒所述维修任务生成模块，生成线路紧急维修任务，发送到对应的维护人员终端。Further, the monitoring report collection module has a built-in timing module, which wakes up the timing module when the monitoring report collection module is woken up, and directly wakes up the monitoring report if no monitoring report is received within a preset time period. The maintenance task generation module generates line emergency maintenance tasks and sends them to the corresponding maintenance personnel terminals.

进一步地，还包括：Further, it also includes:

数据缓存通道搭建模块，在对应通讯线路故障时启动，实现数据缓存通道的搭建；The data cache channel building module starts when the corresponding communication line fails to realize the construction of the data cache channel;

数据缓存中心，通过所述数据缓存通道与各场站子系统实现通讯，用于实现电力信息数据缓存，调度中心登录后，通过访问数据缓存中心可以实现缓存通讯数据的调用。The data cache center communicates with each station subsystem through the data cache channel, and is used to cache the power information data. After the dispatch center is logged in, the call of the cached communication data can be realized by accessing the data cache center.

本发明具有以下有益效果：The present invention has the following beneficial effects:

1、采用独立的监测报告进行通讯线路通讯状态的监测，可以尽可能的减少对原本通讯状态所造成的影响，实现通讯状态监测的准确、快速监测。1. Use an independent monitoring report to monitor the communication status of the communication line, which can reduce the impact on the original communication status as much as possible, and achieve accurate and rapid monitoring of the communication status.

2、实现了电力维修任务的自动生成和派发，使得维护人员可以第一时间获取到故障信息，及时完成故障维修。2. The automatic generation and distribution of power maintenance tasks are realized, so that maintenance personnel can obtain fault information at the first time and complete fault maintenance in time.

3、实现了电力信息的缓存，从而可以很好的避免由于通讯线路故障而造成的数据流失。3. The cache of power information is realized, so that the data loss caused by the failure of the communication line can be well avoided.

附图说明Description of drawings

为了更清楚的说明本申请实施例或现有技术的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单的介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the embodiments of the present application or the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the present application, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

图1为本发明实施例一种可监测通讯状态的电力通讯系统的系统框图。FIG. 1 is a system block diagram of a power communication system capable of monitoring communication status according to an embodiment of the present invention.

具体实施方式Detailed ways

为了使本技术领域的人员更好地理解本申请方案，下面结合附图和具体实施方式对本申请作进一步的详细说明。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。In order to make those skilled in the art better understand the solution of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

如图1所示，本发明实施例的一种可监测通讯状态的电力通讯系统，包括：As shown in FIG. 1 , a power communication system capable of monitoring communication status according to an embodiment of the present invention includes:

用于在电力系统各场站子系统1与调度中心2之间传递消息的通信系统；A communication system for transmitting messages between each station subsystem 1 of the power system and the dispatch center 2;

用于监测通讯状态的通信监测子系统3；A communication monitoring subsystem 3 for monitoring the communication status;

用于接收通信监测子系统3传输的信息，并实现信息分类储存的服务器；A server for receiving the information transmitted by the communication monitoring subsystem 3 and implementing information classification storage;

所述通信监测子系统3包括：The communication monitoring subsystem 3 includes:

监测报告发送模块31，按阈值布设在通讯线路上，基本采用通讯线路起始点布置一个，中间点布置一个的方式，用于定时定点的发送监测报告，并实现监测报告发出时间点的标记；为避免与电力信息的混淆，采用信源编码为电力信息以及监测报告配置独立的数据标识；The monitoring report sending module 31 is arranged on the communication line according to the threshold value, and basically adopts the method of arranging one at the starting point of the communication line and one at the middle point, which is used to send the monitoring report at a fixed point and realize the marking of the time point when the monitoring report is issued; To avoid confusion with power information, use source coding to configure independent data identifiers for power information and monitoring reports;

监测报告采集模块32，按阈值布设在通讯线路上，一个监测报告发送模块31配置一个监测报告采集模块32，基本采用通讯线路中间点布置一个，终端布置一个的方式，用于定时定点的采集监测报告，并实现监测报告采集时间点的标记；The monitoring report collection module 32 is arranged on the communication line according to the threshold value. One monitoring report sending module 31 is configured with one monitoring report collection module 32, which is basically arranged in the middle point of the communication line and the terminal is arranged in a way, which is used for the collection and monitoring of fixed points at a fixed time. Report, and realize the marking of monitoring report collection time point;

通讯状态分析模块33，用于通过计算监测报告发出时间点和采集时间点之间的时间差来判定当前该段通讯线路的通讯状态；The communication state analysis module 33 is used to determine the communication state of the current communication line by calculating the time difference between the monitoring report issuing time point and the collection time point;

监测报告编制模块34，用于根据接收到的每一段通讯线路的通讯状态实现当前整条线路通讯状态报告的编制；The monitoring report preparation module 34 is used to realize the preparation of the current communication status report of the entire line according to the received communication status of each section of the communication line;

维修任务生成模块35，用于根据所述监测报告生成对应的线路维修任务，并将生成的线路维修任务定向发送至对应的维护人员终端。The maintenance task generating module 35 is configured to generate a corresponding line maintenance task according to the monitoring report, and directionally send the generated line maintenance task to the corresponding maintenance personnel terminal.

本实施例中，所述监测报告发送模块31、监测报告采集模块32在非监测状态，监测报告发送模块31和监测报告采集模块32均处于休眠状态，采用定时同时唤醒，定时同时休眠的工作模式；所述监测报告采集模块32只采集监测报告数据，其余数据直接通过，经通讯线路正常传输。In this embodiment, the monitoring report sending module 31 and the monitoring report collecting module 32 are in a non-monitoring state, and both the monitoring report sending module 31 and the monitoring report collecting module 32 are in a dormant state, using the working mode of timing simultaneous wake-up and timing simultaneous sleep ; The monitoring report collection module 32 only collects monitoring report data, and the rest of the data directly passes through and is normally transmitted through the communication line.

本实施例中，所述监测报告发送模块31所发送的监测报告内载其所在通讯线路的定位信息和通讯线路名称信息。In this embodiment, the monitoring report sent by the monitoring report sending module 31 contains the positioning information and the name information of the communication line where the monitoring report is located.

本实施例中，所述通讯状态分析模块33通过将计算所得的时间差基于最邻近分类器与预设的通讯状态等级标准区间进行对比，从而得到当前通讯线路的通讯状态。In this embodiment, the communication state analysis module 33 obtains the communication state of the current communication line by comparing the calculated time difference with the preset communication state level standard interval based on the nearest neighbor classifier.

本实施例中，所述监测报告采集模块32内载定时模块，在唤醒监测报告采集模块32的同时唤醒定时模块，在预设的时间段内，若未接收到监测报告，则直接唤醒维修任务生成模块35，生成线路紧急维修任务，发送到对应的维护人员终端。In this embodiment, the monitoring report collection module 32 has a built-in timing module, which wakes up the monitoring report collection module 32 at the same time, and wakes up the maintenance task directly if no monitoring report is received within a preset time period. The generating module 35 generates a line emergency maintenance task and sends it to the corresponding maintenance personnel terminal.

本实施例中，每一条通讯线路均配置一数据缓存通道搭建模块5，在对应通讯线路故障时启动，实现数据缓存通道的搭建；In this embodiment, each communication line is equipped with a data buffer channel construction module 5, which is activated when the corresponding communication line fails, so as to realize the construction of the data buffer channel;

数据缓存中心4，通过数据缓存通道与各场站子系统1实现通讯，用于实现电力信息数据缓存，调度中心2登录后，通过访问数据缓存中心4可以实现缓存通讯数据的调用，从而可以很好的避免由于通讯线路故障而造成的数据流失。The data cache center 4 communicates with each station subsystem 1 through the data cache channel, which is used to realize the power information data cache. After the dispatch center 2 logs in, the call of the cached communication data can be realized by accessing the data cache center 4, so that it can be easily It is good to avoid data loss due to communication line failure.

本实施例中，所述线路维修任务、线路紧急维修任务均包括当前线路通讯状态的评估结果以及该线路所在的定位信息。In this embodiment, the line maintenance task and the line emergency maintenance task both include the evaluation result of the current line communication state and the location information where the line is located.

本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同或相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments may be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

以上对本申请所提供的电力信息通信系统进行了详细介绍。本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以对本申请进行若干改进和修饰，这些改进和修饰也落入本申请权利要求的保护范围内。The power information communication system provided by the present application has been introduced in detail above. Specific examples are used herein to illustrate the principles and implementations of the present application, and the descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims (6)

1. An electrical power communication system capable of monitoring communication status, comprising:
the communication system is used for transmitting messages between each station subsystem of the power system and the dispatching center;
a communication monitoring subsystem for monitoring communication status;
the server is used for receiving the information transmitted by the communication monitoring subsystem and realizing classified storage of the information;
the communication monitoring subsystem includes:
the monitoring report sending module is used for sending the monitoring report at fixed time and fixed point and marking the sending time point of the monitoring report;
the monitoring report acquisition module is used for acquiring monitoring reports at fixed time and fixed point and marking the acquisition time points of the monitoring reports;
the communication state analysis module is used for judging the communication state of the current section of communication line by calculating the time difference between the sending time point and the collecting time point of the monitoring report;
the monitoring report compiling module is used for compiling the current monitoring report of the communication state of the whole line according to the received communication state of each section of communication line;
the maintenance task generating module is used for generating a corresponding line maintenance task according to the monitoring report and directionally sending the generated line maintenance task to a corresponding maintainer terminal;
and the communication state analysis module compares the calculated time difference with a preset communication state grade standard interval based on the nearest classifier, so as to obtain the communication state of the current communication line.
2. The power communication system according to claim 1, wherein the monitoring report sending module and the monitoring report collecting module are both arranged on the communication line according to a threshold value, and in the non-monitoring state, the monitoring report sending module and the monitoring report collecting module are both in a sleep state.
3. The power communication system according to claim 1, wherein the monitoring report collecting module only collects the monitoring report data, and the rest of the data passes directly and is normally transmitted via the communication line.
4. The power communication system according to claim 1, wherein the monitoring report sending module sends the monitoring report carrying location information of the communication line.
5. The power communication system capable of monitoring the communication state according to claim 1, wherein the monitoring report acquisition module is loaded with a timing module, the timing module is waken up while the monitoring report acquisition module is waken up, and within a preset time period, if the monitoring report is not received, the maintenance task generation module is waken up directly to generate a line emergency maintenance task, and the line emergency maintenance task is sent to a corresponding maintenance personnel terminal.
6. A power communication system in which a communication status can be monitored as claimed in claim 1, further comprising:
the data cache channel building module is started when a corresponding communication line has a fault, so that the building of the data cache channel is realized;
and the data cache center is communicated with each station subsystem through the data cache channel and is used for realizing the caching of the electric power information data, and after the dispatching center logs in, the dispatching center can call the cached communication data by accessing the data cache center.
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