WO2016177014A1 - Method for implementing circuit redundancy network protection for smart substation - Google Patents

Method for implementing circuit redundancy network protection for smart substation Download PDF

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Publication number
WO2016177014A1
WO2016177014A1 PCT/CN2016/000214 CN2016000214W WO2016177014A1 WO 2016177014 A1 WO2016177014 A1 WO 2016177014A1 CN 2016000214 W CN2016000214 W CN 2016000214W WO 2016177014 A1 WO2016177014 A1 WO 2016177014A1
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WIPO (PCT)
Prior art keywords
area
protection device
configuration
line
redundant
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PCT/CN2016/000214
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French (fr)
Chinese (zh)
Inventor
伍叶凯
苏黎明
张月品
黄少锋
熊军
赵月
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北京四方继保自动化股份有限公司
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Priority to GB1718407.8A priority Critical patent/GB2556211B/en
Publication of WO2016177014A1 publication Critical patent/WO2016177014A1/en
Priority to PH12017502008A priority patent/PH12017502008A1/en

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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • H02J3/00125—Transmission line or load transient problems, e.g. overvoltage, resonance or self-excitation of inductive loads
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

Definitions

  • the invention belongs to the technical field of power system relay protection, and is suitable for intelligent line redundancy protection of networking mode, and is generally used for intelligent substation of voltage level of 110 kV and below.
  • the power grids with voltage levels of 110kV and below adopt the principle of single-weight and far-backup to configure relay protection.
  • the line protection device of the networking mode if it is damaged, it must be temporarily withdrawn from the protection device for maintenance. Since the line is in an unprotected state, the line must be powered off. The protection device can be repaired.
  • the station domain protection is temporarily replaced by the station domain protection.
  • the current station domain protection is not mature enough.
  • the biggest disadvantage is that the operation and maintenance and maintenance are inconvenient, the scalability is poor, and the security is poor. If the misoperation occurs, the entire substation will be lost;
  • the present invention discloses a method for implementing the network redundancy protection networking mode in the intelligent substation.
  • the present invention specifically adopts the following technical solutions.
  • a method for implementing a redundant substation line redundancy protection networking mode characterized in that the method comprises the following steps:
  • Step 1 Set up a redundant protection device in the intelligent substation.
  • Step 2 The redundant line protection device has n sets of configuration areas and fixed value areas, and a set of configuration files are stored in each set of configuration areas in advance, and corresponding protection values are stored in each set value area; Request configuration area x and fixed value area x should be consistent with the corresponding setting of line x, where n ⁇ the number of lines of the voltage level of the whole station;
  • Step 3 Set the fixed value area and the configuration area number of the redundant protection device to the 1 area;
  • Step 4 Put the SV into the soft pressure plate and exit the other pressure plate;
  • Step 5 Connect all the optical fibers of SV and GOOSE to the process layer network switch;
  • Step 6 When the line is in normal operation, the redundant protection device is powered on standby;
  • Step 7 When a line protection device is inspected, the fixed value area and the configuration area of the redundant line protection device are switched to the area number x corresponding to the preset maintenance line x; and then the set is put in accordance with the operation and maintenance operation rules. Redundant protection device, and finally exit the maintenance device for maintenance according to the operating operation rules;
  • Step 8 After the overhaul is completed, first put the line protection device that ends the maintenance according to the operation and maintenance operation rules, and then exit the redundant protection device, and switch the fixed value area and the configuration area of the redundant protection device to the 1 area.
  • FIG. 1 is a schematic flow chart of a method for implementing a redundant substation protection network in a smart substation according to the present invention
  • FIG. 2 is a schematic diagram of a connection mode in which both the line protection and the redundant protection device are in a networked manner
  • FIG. 3 is a schematic diagram of the connection of the repaired line protection device in a point-to-point manner, and the redundant protection device adopts a networking mode.
  • FIG. 1 is a schematic flowchart of a method for implementing a network redundancy protection networking mode in a smart substation according to the present invention, where the protection method includes the following steps:
  • Step 1 In the intelligent substation (when the networking mode is adopted: the interval layer protection device and the process layer device (merging unit and intelligent terminal) exchange data through the switch, and data is collected by means of network sampling and network tripping. Transmission, also known as network mining network hopping; when using the point-to-point method, the interval layer protection is directly connected through the optical fiber and the process layer equipment, also known as straight mining straight jump.)
  • Set a set of redundant protection devices the set The built-in n configuration area and the fixed value area (n ⁇ the number of lines of the voltage level of the whole station) are protected, and the configuration area x and the fixed value area x correspond to the line x.
  • the public line protection panel can be separately configured, and a redundant protection device is provided; if the space is tight, the redundant protection device can also be shared with the public protection panel or other separate protection screen. cabinet.
  • Step 2 The redundant line protection device is provided with n (n ⁇ the number of lines of the voltage level of the whole station), a configuration area (area for storing configuration files), and a fixed value area (area for storing protection settings), wherein the configuration
  • the number of zones and fixed-value zones shall be greater than or equal to the number of route intervals of the voltage level of the whole station, ensuring that each route interval has a corresponding configuration zone and a fixed value zone in the redundant protection device, which are pre-configured in each set.
  • Each group stores a set of configuration files.
  • Each set of configuration files includes the virtual terminal connection relationship between the line interval and the device associated with the entire station.
  • Each set of configuration files corresponds to a line interval SV (ie, sample value), GOOSE (ie, universal The association (subscription) relationship of the substation event of the object.
  • SV sample value
  • GOOSE ie, universal The association (subscription) relationship of the substation event of the object.
  • the association (subscription) relationship of SV and GOOSE is also determined, and the corresponding protection value is stored in each set value area; x and the fixed value area x should be consistent with the corresponding settings of the line x;
  • Step 3 Set the fixed area code and the configuration area number of the redundant protection device to zone 1 (or any normal line zone). The purpose is to prevent the redundant protection device from generating alarm information during hot standby to avoid causing operation. Misunderstanding of personnel;
  • Step 4 Put the SV to receive the soft pressure plate, and exit the other pressure plate, the purpose is the same as step 3;
  • Step 5 All the optical fibers of the SV and the GOOSE are connected to the network switch, so as to communicate with the bay layer merging unit and the intelligent terminal device accessing the switch, and obtain related SV and GOOSE information;
  • Step 6 When the line is in normal operation, the redundant protection device is powered on and off to maintain the life of the power plug, so that the device can work normally during the warranty period;
  • Step 7 When a line protection device is inspected, the fixed value area and the configuration area of the redundant protection device are switched to the area number x corresponding to the preset maintenance line x; and then the set is redundant according to the operation and maintenance operation procedure. Remaining protection device, and finally exiting the maintenance device for maintenance according to the operating operation rules;
  • the area code of the redundant protection device includes the fixed value area and the configuration area number.
  • the fixed value area refers to the protection fixed value storage area in the traditional sense. Now the switching fixed value area is changed except the protection setting value of the corresponding line interval.
  • the configuration file of the corresponding line interval is changed, so that the configuration and the fixed value that have been pre-stored can be selected; the device can adaptively adjust the operating conditions of the device according to the configuration file of the selected area, including the analog quantity, Switching and function selection, completely replace the line protection of any interval to be repaired.
  • the area code means that the configuration file and the location value stored in the protection CPU are arranged in order of 1, 2, ..., n.
  • Step 8 After the overhaul is completed, first put the line protection device that ends the maintenance according to the operation and maintenance operation rules, and then exit the redundant protection device, and switch the fixed value area and the configuration area of the redundant protection device to the 1 area.
  • connection diagram of the overhaul protection and the redundancy protection device adopts the networking mode.
  • the left side of the figure is the redundant protection interval, which includes the redundancy protection device in the networking mode; the redundancy protection is connected to the SV network and the GOOSE network switch through the optical fiber, and the SV and GOOSE information of other line intervals are obtained through the switch.
  • the normal operation interval 1 protection device and the interval combining unit and the intelligent terminal connected thereto, the interval layer merging unit and the intelligent terminal are all connected through the optical fiber to the corresponding network switch for sharing the data signal.
  • the interval protection device is also connected to the SV network and the GOOSE network switch through the optical fiber, and obtains the SV and GOOSE information of the interval through the switch.
  • the right side of the figure is the normal operation interval n protection device and the interval merging unit and the intelligent terminal connected thereto, the interval layer merging unit and the intelligent terminal are all connected through the optical fiber to the corresponding network switch for sharing data.
  • the information is also connected to the SV network and the GOOSE network switch through the optical fiber, and the SV and GOOSE information of the interval is obtained through the switch.
  • the devices in the figure are connected to the corresponding network switches through optical fibers, which is beneficial to data information sharing and reduce the number of optical fibers used.
  • the line protection device is in point-to-point mode, and the redundant protection device is connected in a networking manner.
  • the left side of the figure is the redundant protection interval, which includes the redundancy protection device in the networking mode; the redundancy protection is connected to the SV network and the GOOSE network switch through the optical fiber, and the SV and GOOSE information of other line intervals are obtained through the switch.
  • the normal operation interval 1 protection device and the interval merging unit and the intelligent terminal connected thereto are connected to the corresponding network switch through the optical fiber to share the data information and also pass the optical fiber.
  • the interval protection device is directly connected; the interval protection device is directly connected to the interval combining unit and the intelligent terminal through the optical fiber, thereby reducing the intermediate link of data transmission and increasing reliability.
  • the right side of the figure is the normal operation interval n protection device and the interval merging unit and the intelligent terminal connected thereto, the interval layer merging unit and the intelligent terminal are all connected through the optical fiber with the corresponding network switch to share the data information.
  • the optical fiber is directly connected to the space protection device; the space protection device is directly connected to the space combining unit and the intelligent terminal through the optical fiber.
  • the devices in the figure are connected by optical fiber, which can ensure the reliability and stability of the data source and avoid the influence of electromagnetic interference and other factors.

Abstract

Provided is a method for implementing circuit redundancy network protection for a smart substation, used primarily for a smart substation networked at a voltage level of 110 kV or less. The present method utilizes a smart circuit-protection device to switch to a designated storage area, and by means of a device panel switching constant-value regions, configuration files and protected constant values pre-stored in the device and debugged, so as to achieve the purpose of substituting at any time any one of the circuit protection devices, within the substation, having the same voltage level. The present method achieves, in a simple manner, redundancy configuration for the protection of all circuits having the same voltage level in a substation, thus achieving the purpose of inspecting and maintaining protection devices without interrupting circuit power.

Description

智能变电站线路冗余保护组网方式实现方法Method for realizing redundant substation line redundancy protection networking mode 技术领域Technical field
本发明属于电力系统继电保护技术领域，适用于组网方式的智能化线路冗余保护，一般用于110kV及以下电压等级的智能变电站。The invention belongs to the technical field of power system relay protection, and is suitable for intelligent line redundancy protection of networking mode, and is generally used for intelligent substation of voltage level of 110 kV and below.
背景技术Background technique
根据我国相关技术规程规定，110kV及以下电压等级的电网采用单重化、远后备的原则配置继电保护。对于110kV及以下电压等级的智能变电站，如果组网方式的线路保护装置本身损坏，必须临时退出该保护装置进行检修时，由于该条线路处于无保护的状态，则必须要将该条线路停电以后才可以对该保护装置进行检修。According to the relevant technical regulations of China, the power grids with voltage levels of 110kV and below adopt the principle of single-weight and far-backup to configure relay protection. For intelligent substation of 110kV and below, if the line protection device of the networking mode is damaged, it must be temporarily withdrawn from the protection device for maintenance. Since the line is in an unprotected state, the line must be powered off. The protection device can be repaired.
而当线路实际运行时，通常情况下，经常会遇到线路负荷很重或该条线路用户很重要，从而导致线路无法停电或无法长时间停电的场合。When the line is actually running, it is often encountered in situations where the line load is heavy or the line user is important, resulting in a line that cannot be powered down or cannot be powered down for a long time.
目前可以采用的解决办法有如下两种：There are two solutions that can be used at present:
1、采用站域保护来临时替代该套线路保护；1. Use station domain protection to temporarily replace the line protection;
2、采用一台备用线路保护装置，人为临时按照故障装置的配置重新下载和调试好以后替代该套线路保护。2. Adopt an alternate line protection device, and replace it with the line protection after being temporarily downloaded and debugged according to the configuration of the faulty device.
但是现有技术中采用的上述两种解决方法存在以下缺陷：However, the above two solutions adopted in the prior art have the following drawbacks:
1、采用站域保护来临时替代，目前的站域保护不够成熟，其最大缺点是运行维护和检修不方便、可扩展性差、安全性差，如果发生误动，会损失整个变电站；1. The station domain protection is temporarily replaced by the station domain protection. The current station domain protection is not mature enough. The biggest disadvantage is that the operation and maintenance and maintenance are inconvenient, the scalability is poor, and the security is poor. If the misoperation occurs, the entire substation will be lost;
2、采用一台备用装置，人为临时按照故障装置的配置重新下载和调试好，缺点是临时工作量大、需要配套的专业工具、需要专业继保检修人员和厂家工程人员到现场才能完成。2, using a spare device, artificially re-downloaded and debugged according to the configuration of the faulty device. The disadvantage is that the temporary workload is large, the necessary professional tools are needed, and the professional maintenance personnel and factory engineers are required to go to the site to complete.
可见，以上两种方式都不能很好的解决不停电或少停电的问题，急需一种方法来解决当前面临的问题。It can be seen that the above two methods can not solve the problem of no power outage or less power outage, and an urgent need for a method to solve the current problems.
发明内容Summary of the invention
为解决110kV及以下电压等级线路保护装置检修时，线路可以不停电或少停电的技术问题，本发明公开了一种智能变电站中线路冗余保护组网方式的实现方法。In order to solve the technical problem that the line protection device of the 110kV and below voltage level can be repaired without power failure or less power failure, the present invention discloses a method for implementing the network redundancy protection networking mode in the intelligent substation.
本发明具体采用以下技术方案。The present invention specifically adopts the following technical solutions.
一种智能变电站线路冗余保护组网方式的实现方法，其特征在于，所述方法包括以下步骤：A method for implementing a redundant substation line redundancy protection networking mode, characterized in that the method comprises the following steps:
步骤1：在智能变电站中设置一套冗余保护装置。Step 1: Set up a redundant protection device in the intelligent substation.
步骤2：所述冗余线路保护装置具备n套配置区和定值区，预先在每套配置区内各存储一组配置文件，并在每套定值区内存储好对应的保护定值；要求配置区x和定值区 x要跟线路x的对应设置保持一致，其中n≥全站该电压等级的线路条数；Step 2: The redundant line protection device has n sets of configuration areas and fixed value areas, and a set of configuration files are stored in each set of configuration areas in advance, and corresponding protection values are stored in each set value area; Request configuration area x and fixed value area x should be consistent with the corresponding setting of line x, where n ≥ the number of lines of the voltage level of the whole station;
步骤3：将冗余保护装置的定值区号和配置区号均设置到1区；Step 3: Set the fixed value area and the configuration area number of the redundant protection device to the 1 area;
步骤4：投入SV接收软压板，退出其他压板即可；Step 4: Put the SV into the soft pressure plate and exit the other pressure plate;
步骤5：将SV和GOOSE的光纤全部接到过程层网络交换机上；Step 5: Connect all the optical fibers of SV and GOOSE to the process layer network switch;
步骤6：线路正常运行时，该套冗余保护装置上电热备用；Step 6: When the line is in normal operation, the redundant protection device is powered on standby;
步骤7：当某一线路保护装置检修时，将冗余线路保护装置的定值区和配置区切换到预先设定好的该检修线路x对应的区号x；然后按照运行检修操作规程投入该套冗余保护装置，最后按照运行操作规程退出检修装置进行检修；Step 7: When a line protection device is inspected, the fixed value area and the configuration area of the redundant line protection device are switched to the area number x corresponding to the preset maintenance line x; and then the set is put in accordance with the operation and maintenance operation rules. Redundant protection device, and finally exit the maintenance device for maintenance according to the operating operation rules;
步骤8：当检修结束以后，先按照运行检修操作规程投入结束检修的线路保护装置，然后再退出冗余保护装置，将冗余保护装置的定值区和配置区切换到1区即可。Step 8: After the overhaul is completed, first put the line protection device that ends the maintenance according to the operation and maintenance operation rules, and then exit the redundant protection device, and switch the fixed value area and the configuration area of the redundant protection device to the 1 area.
本发明具有以下有益效果：The invention has the following beneficial effects:
1、检修不停电：在组网方式下，能实现不停电检修损坏的线路保护装置的需求；1. Maintenance and non-blackout: Under the networking mode, the demand for line protection devices that can be repaired without power failure can be realized;
2、操作简便：通过切换定值区就可完成，操作方法非常简便、并且兼容以前的运行习惯，运行值班人员就可以完成，无需保护人员和厂家工程人员参与；2, easy to operate: by switching the fixed value area can be completed, the operation method is very simple, and compatible with the previous operating habits, the operation of the on-duty personnel can be completed, without the need for protection personnel and factory engineering personnel to participate;
3、针对性强：可以随时替代任何一条线路间隔的线路保护装置；3. Targeted: It can replace any line protection device at any time;
4、可靠性高：平时功能压板、出口压板均退出，需要的时候才切换配置和定值、投入压板，临时带役被保护线路，能大大减少人为因素产生的错误误动的风险；4. High reliability: the normal function pressure plate and the outlet pressure plate are all withdrawn. When necessary, the configuration and setting value are changed, the pressure plate is put into use, and the temporarily protected line is protected, which can greatly reduce the risk of mistakes caused by human factors;
5、低成本、维护简单、可扩展性强：投入成本比站域保护少很多，平时不投入运行，设备损坏率低，无误动风险；变电站扩建时，只需要将新增的线路间隔配置信息和定值存储到相应的定值区即可。5, low cost, simple maintenance, strong scalability: the input cost is much less than the station domain protection, usually not put into operation, the equipment damage rate is low, no risk of misoperation; when the substation expansion, only need to add new line spacing configuration information And the fixed value is stored in the corresponding fixed value area.
附图说明DRAWINGS
图1为本发明智能变电站线路冗余保护组网方式实现方法流程示意图；1 is a schematic flow chart of a method for implementing a redundant substation protection network in a smart substation according to the present invention;
图2为被检修线路保护和冗余保护装置均采用组网方式的连接示意图；2 is a schematic diagram of a connection mode in which both the line protection and the redundant protection device are in a networked manner;
图3为被检修线路保护装置采用点对点方式，冗余保护装置采用组网方式的连接示意图。FIG. 3 is a schematic diagram of the connection of the repaired line protection device in a point-to-point manner, and the redundant protection device adopts a networking mode.
具体实施方式detailed description
下面结合说明书附图对本发明的技术方案做进一步详细介绍。如图1所示为本发明智能变电站中线路冗余保护组网方式的实现方法流程示意图，所述保护方法包括以下步骤：The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic flowchart of a method for implementing a network redundancy protection networking mode in a smart substation according to the present invention, where the protection method includes the following steps:
步骤1：在智能变电站(当采用组网方式时：间隔层保护装置跟过程层装置(合并单元和智能终端)之间都是通过交换机进行数据交换的，采用网络采样和网络跳闸的方式进行数据传递，也称为网采网跳；当采用点对点方式时，间隔层保护是直接通过光纤跟过程层设备连接的，也称为直采直跳。)中设置一套冗余保护装置，该套保护内置n个配置区和定值区(n≥全站该电压等级的线路条数)，配置区x和定值区x即对应着线路x。 Step 1: In the intelligent substation (when the networking mode is adopted: the interval layer protection device and the process layer device (merging unit and intelligent terminal) exchange data through the switch, and data is collected by means of network sampling and network tripping. Transmission, also known as network mining network hopping; when using the point-to-point method, the interval layer protection is directly connected through the optical fiber and the process layer equipment, also known as straight mining straight jump.) Set a set of redundant protection devices, the set The built-in n configuration area and the fixed value area (n≥ the number of lines of the voltage level of the whole station) are protected, and the configuration area x and the fixed value area x correspond to the line x.
如果保护小室里面的空间足够，可以单独配置公共线路保护屏柜，其中设置一套冗余保护装置；如果空间紧张，也可以将该冗余保护装置跟公共保护屏柜或其它单独的保护共用屏柜。If the space inside the protection chamber is sufficient, the public line protection panel can be separately configured, and a redundant protection device is provided; if the space is tight, the redundant protection device can also be shared with the public protection panel or other separate protection screen. cabinet.
步骤2：所述冗余线路保护装置具备n(n≥全站该电压等级的线路条数)套配置区(存储配置文件的区域)和定值区(存储保护定值的区域)，其中配置区和定值区的数量要大于等于全站该电压等级的线路间隔数量，保证每条线路间隔在该冗余保护装置内都有一一对应的配置区和定值区，预先在每套配置区内各存储一组配置文件，每组配置文件包含了本线路间隔跟全站关联设备的虚端子连接关系，每组配置文件对应一个线路间隔的SV(即采样值)、GOOSE(即面向通用对象的变电站事件)的关联(订阅)关系，配置文件确定后，SV、GOOSE的关联(订阅)关系也就确定了，并在每套定值区内存储好对应的保护定值；要求配置区x和定值区x要跟线路x的对应设置保持一致；Step 2: The redundant line protection device is provided with n (n ≥ the number of lines of the voltage level of the whole station), a configuration area (area for storing configuration files), and a fixed value area (area for storing protection settings), wherein the configuration The number of zones and fixed-value zones shall be greater than or equal to the number of route intervals of the voltage level of the whole station, ensuring that each route interval has a corresponding configuration zone and a fixed value zone in the redundant protection device, which are pre-configured in each set. Each group stores a set of configuration files. Each set of configuration files includes the virtual terminal connection relationship between the line interval and the device associated with the entire station. Each set of configuration files corresponds to a line interval SV (ie, sample value), GOOSE (ie, universal The association (subscription) relationship of the substation event of the object. After the configuration file is determined, the association (subscription) relationship of SV and GOOSE is also determined, and the corresponding protection value is stored in each set value area; x and the fixed value area x should be consistent with the corresponding settings of the line x;
步骤3：将冗余保护装置的定值区号和配置区号均设置到1区(或者任何一个正常线路区都可以)，目的是为了避免冗余保护装置在热备用期间产生告警信息，以免引起运行人员的误解；Step 3: Set the fixed area code and the configuration area number of the redundant protection device to zone 1 (or any normal line zone). The purpose is to prevent the redundant protection device from generating alarm information during hot standby to avoid causing operation. Misunderstanding of personnel;
步骤4：投入SV接收软压板，退出其他压板即可，目的同步骤3；Step 4: Put the SV to receive the soft pressure plate, and exit the other pressure plate, the purpose is the same as step 3;
步骤5：将SV和GOOSE的光纤全部接到网络交换机上，以便跟接入该交换机的间隔层合并单元和智能终端装置进行通信，获取相关的SV和GOOSE信息；Step 5: All the optical fibers of the SV and the GOOSE are connected to the network switch, so as to communicate with the bay layer merging unit and the intelligent terminal device accessing the switch, and obtain related SV and GOOSE information;
步骤6：线路正常运行时，该套冗余保护装置上电热备用，以此来维持电源插件的寿命，使得装置在保质期内能正常工作；Step 6: When the line is in normal operation, the redundant protection device is powered on and off to maintain the life of the power plug, so that the device can work normally during the warranty period;
步骤7：当某一线路保护装置检修时，将冗余保护装置的定值区和配置区切换到预先设定好的该检修线路x对应的区号x；然后按照运行检修操作规程投入该套冗余保护装置，最后按照运行操作规程退出检修装置进行检修；Step 7: When a line protection device is inspected, the fixed value area and the configuration area of the redundant protection device are switched to the area number x corresponding to the preset maintenance line x; and then the set is redundant according to the operation and maintenance operation procedure. Remaining protection device, and finally exiting the maintenance device for maintenance according to the operating operation rules;
其中冗余保护装置的区号包含了定值区号和配置区号，定值区就是指的传统意义上的保护定值存储区，现在切换定值区除了对应线路间隔的保护定值被更改以外，也同时将对应线路间隔的配置文件进行了更改，这样可以实现对已经预先存储的配置和定值进行选择；装置可以根据选定区的配置文件，自适应的调整装置运行工况，包含模拟量、开关量和功能选择，完全替代任意间隔待检修的线路保护。区号就是指配置文件和定值存储在保护CPU内的位置空间代码按顺序排列为1、2、…n。The area code of the redundant protection device includes the fixed value area and the configuration area number. The fixed value area refers to the protection fixed value storage area in the traditional sense. Now the switching fixed value area is changed except the protection setting value of the corresponding line interval. At the same time, the configuration file of the corresponding line interval is changed, so that the configuration and the fixed value that have been pre-stored can be selected; the device can adaptively adjust the operating conditions of the device according to the configuration file of the selected area, including the analog quantity, Switching and function selection, completely replace the line protection of any interval to be repaired. The area code means that the configuration file and the location value stored in the protection CPU are arranged in order of 1, 2, ..., n.
步骤8：当检修结束以后，先按照运行检修操作规程投入结束检修的线路保护装置，然后再退出冗余保护装置，将冗余保护装置的定值区和配置区切换到1区即可。Step 8: After the overhaul is completed, first put the line protection device that ends the maintenance according to the operation and maintenance operation rules, and then exit the redundant protection device, and switch the fixed value area and the configuration area of the redundant protection device to the 1 area.
如图2所示为被检修保护和冗余保护装置均采用组网方式的连接示意图。As shown in FIG. 2, the connection diagram of the overhaul protection and the redundancy protection device adopts the networking mode.
图中左侧为冗余保护间隔，其中包含了组网方式的冗余保护装置；该冗余保护通过光纤跟SV网和GOOSE网交换机连接，通过交换机获取其它线路间隔的SV和GOOSE信息。The left side of the figure is the redundant protection interval, which includes the redundancy protection device in the networking mode; the redundancy protection is connected to the SV network and the GOOSE network switch through the optical fiber, and the SV and GOOSE information of other line intervals are obtained through the switch.
图中中间为正常运行的间隔1保护装置和与其连接的该间隔合并单元及智能终端，间隔层合并单元及智能终端都是通过光纤跟对应的网络交换机连接，用以共享数据信 息；该间隔保护装置也是通过光纤跟SV网和GOOSE网交换机连接，通过交换机获取本间隔的SV和GOOSE信息。In the middle of the figure, the normal operation interval 1 protection device and the interval combining unit and the intelligent terminal connected thereto, the interval layer merging unit and the intelligent terminal are all connected through the optical fiber to the corresponding network switch for sharing the data signal. The interval protection device is also connected to the SV network and the GOOSE network switch through the optical fiber, and obtains the SV and GOOSE information of the interval through the switch.
以此类推，图中右侧为正常运行的间隔n保护装置和与其连接的该间隔合并单元及智能终端，间隔层合并单元及智能终端都是通过光纤跟对应的网络交换机连接，用以共享数据信息；该间隔保护装置也是通过光纤跟SV网和GOOSE网交换机连接，通过交换机获取本间隔的SV和GOOSE信息。And so on, the right side of the figure is the normal operation interval n protection device and the interval merging unit and the intelligent terminal connected thereto, the interval layer merging unit and the intelligent terminal are all connected through the optical fiber to the corresponding network switch for sharing data. The information is also connected to the SV network and the GOOSE network switch through the optical fiber, and the SV and GOOSE information of the interval is obtained through the switch.
图中所述设备都是通过光纤跟对应的网络交换机进行连接，这样有利于实现数据信息共享，减少光纤的使用数量。The devices in the figure are connected to the corresponding network switches through optical fibers, which is beneficial to data information sharing and reduce the number of optical fibers used.
如图3所示为被检修线路保护装置采用点对点方式，冗余保护装置采用组网方式的连接示意图As shown in Figure 3, the line protection device is in point-to-point mode, and the redundant protection device is connected in a networking manner.
图中左侧为冗余保护间隔，其中包含了组网方式的冗余保护装置；该冗余保护通过光纤跟SV网和GOOSE网交换机连接，通过交换机获取其它线路间隔的SV和GOOSE信息。The left side of the figure is the redundant protection interval, which includes the redundancy protection device in the networking mode; the redundancy protection is connected to the SV network and the GOOSE network switch through the optical fiber, and the SV and GOOSE information of other line intervals are obtained through the switch.
图中中间为正常运行的间隔1保护装置和与其连接的该间隔合并单元及智能终端，间隔层合并单元及智能终端均通过光纤跟对应的网络交换机连接，用以共享数据信息，同时也通过光纤跟本间隔保护装置直接连接；该间隔保护装置则是通过光纤直接跟本间隔合并单元和智能终端进行连接，这样可以减少数据传递的中间环节，增加可靠性。In the middle of the figure, the normal operation interval 1 protection device and the interval merging unit and the intelligent terminal connected thereto are connected to the corresponding network switch through the optical fiber to share the data information and also pass the optical fiber. The interval protection device is directly connected; the interval protection device is directly connected to the interval combining unit and the intelligent terminal through the optical fiber, thereby reducing the intermediate link of data transmission and increasing reliability.
以此类推，图中右侧为正常运行的间隔n保护装置和与其连接的该间隔合并单元及智能终端，间隔层合并单元及智能终端均通过光纤跟对应的网络交换机连接，用以共享数据信息，同时也通过光纤跟本间隔保护装置直接连接；该间隔保护装置则是通过光纤直接跟本间隔合并单元和智能终端进行连接。And so on, the right side of the figure is the normal operation interval n protection device and the interval merging unit and the intelligent terminal connected thereto, the interval layer merging unit and the intelligent terminal are all connected through the optical fiber with the corresponding network switch to share the data information. At the same time, the optical fiber is directly connected to the space protection device; the space protection device is directly connected to the space combining unit and the intelligent terminal through the optical fiber.
图中所述设备都是通过光纤进行连接，这样可以保证数据源的可靠稳定，避免电磁干扰等因素的影响。The devices in the figure are connected by optical fiber, which can ensure the reliability and stability of the data source and avoid the influence of electromagnetic interference and other factors.
申请人结合说明书附图对本发明的实施例做了详细的说明与描述，但是本领域技术人员应该理解，以上实施例仅为本发明的优选实施方案，详尽的说明只是为了帮助读者更好地理解本发明精神，而并非对本发明保护范围的限制，相反，任何基于本发明的发明精神所作的任何改进或修饰都应当落在本发明的保护范围之内。 The embodiments of the present invention have been described and illustrated in detail with reference to the accompanying drawings, but those skilled in the art should understand that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only to help the reader understand better. The present invention is not intended to limit the scope of the present invention. Instead, any modifications or variations made by the spirit of the present invention should fall within the scope of the present invention.

Claims (3)

  1. 一种智能变电站线路冗余保护组网方式的实现方法，其特征在于，所述方法包括以下步骤：A method for implementing a redundant substation line redundancy protection networking mode, characterized in that the method comprises the following steps:
    步骤1：在智能变电站中设置一套冗余保护装置。Step 1: Set up a redundant protection device in the intelligent substation.
    步骤2：所述冗余保护装置具备n套配置区和定值区，预先在每套配置区内各存储一组配置文件，并在每套定值区内存储好对应的保护定值；要求配置区x和定值区x要跟线路x的对应设置保持一致，其中n≥全站该电压等级的线路条数；Step 2: The redundant protection device has n sets of configuration areas and fixed value areas, and a set of configuration files are stored in each set of configuration areas in advance, and corresponding protection values are stored in each set value area; The configuration area x and the fixed value area x are to be consistent with the corresponding settings of the line x, where n ≥ the number of lines of the voltage level of the whole station;
    步骤3：将冗余保护装置的定值区号和配置区号均设置到1区；Step 3: Set the fixed value area and the configuration area number of the redundant protection device to the 1 area;
    步骤4：投入SV接收软压板，退出其他压板即可；Step 4: Put the SV into the soft pressure plate and exit the other pressure plate;
    步骤5：将SV和GOOSE的光纤全部接到过程层网络交换机上；Step 5: Connect all the optical fibers of SV and GOOSE to the process layer network switch;
    步骤6：线路正常运行时，该套冗余保护装置上电热备用；Step 6: When the line is in normal operation, the redundant protection device is powered on standby;
    步骤7：当某一线路保护装置检修时，将冗余保护装置的定值区和配置区切换到预先设定好的该检修线路x对应的区号x；然后按照运行检修操作规程投入该套冗余保护装置，最后按照运行操作规程退出检修装置进行检修；Step 7: When a line protection device is inspected, the fixed value area and the configuration area of the redundant protection device are switched to the area number x corresponding to the preset maintenance line x; and then the set is redundant according to the operation and maintenance operation procedure. Remaining protection device, and finally exiting the maintenance device for maintenance according to the operating operation rules;
    步骤8：当检修结束以后，先按照运行检修操作规程投入结束检修的线路保护装置，然后再退出冗余保护装置，将冗余保护装置的定值区和配置区切换到1区即可。Step 8: After the overhaul is completed, first put the line protection device that ends the maintenance according to the operation and maintenance operation rules, and then exit the redundant protection device, and switch the fixed value area and the configuration area of the redundant protection device to the 1 area.
  2. 根据权利要求1所述的组网方式的实现方法，其特征在于：The method for implementing the networking mode according to claim 1, wherein:
    在所述冗余保护装置的n套配置区和定值区中，预先在每个配置区内各存储一组配置文件，每组配置文件包含了本线路间隔跟全站关联设备的虚端子连接关系；并在每套定值区内存储好对应的保护定值；要求配置区x和定值区x要跟线路x的对应设置保持一致。In the n sets of configuration areas and the fixed value areas of the redundant protection device, a set of configuration files are stored in each configuration area in advance, and each set of configuration files includes a virtual terminal connection of the line interval and the device associated with the entire station. Relationship; and store the corresponding protection settings in each set value area; the configuration area x and the fixed value area x are required to be consistent with the corresponding settings of the line x.
  3. 根据权利要求1或2所述的组网方式的实现方法，其特征在于：The method for implementing the networking mode according to claim 1 or 2, characterized in that:
    通过切换冗余保护装置的区号，实现对已经预先存储的各线路间隔的保护定值和配置文件进行选择。 By switching the area code of the redundant protection device, it is possible to select a protection setting and a configuration file for each line interval that has been previously stored.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109004744A (en) * 2018-06-22 2018-12-14 国家电网有限公司 Distributed transformer substation status monitoring intelligence managing and control system
CN109301926A (en) * 2018-11-08 2019-02-01 国网福建省电力有限公司泉州供电公司 A kind of internal bridge intelligent substation and its prepared auto restart blocking method
CN111277374A (en) * 2020-01-22 2020-06-12 北京四方继保工程技术有限公司 Method for sampling dual redundant SV of digital device and intelligent substation protection device
CN113011046A (en) * 2021-04-19 2021-06-22 华北电力大学 Method for determining redundant structure of relay protection core component
CN113111532A (en) * 2021-04-20 2021-07-13 华北电力大学 National production relay protection core component redundancy number determination method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104810924B (en) * 2015-05-05 2017-03-29 北京四方继保自动化股份有限公司 Intelligent substation circuit redundancy protecting networking mode implementation method
CN107104509B (en) * 2017-05-05 2020-02-04 国家电网公司 Method, main station, stability control device and system for remotely switching fixed value area

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102386614A (en) * 2011-11-08 2012-03-21 国电南京自动化股份有限公司 Method for sharing standby protecting device by power equipment in intelligent transformer substation
CN104253483A (en) * 2014-09-04 2014-12-31 广西电网公司电力科学研究院 Redundancy protection method and system of transformer substation
CN104810924A (en) * 2015-05-05 2015-07-29 北京四方继保自动化股份有限公司 Intelligent substation line redundancy protection networking manner implementation method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090295231A1 (en) * 2008-05-30 2009-12-03 Gaffney Shawn J Intelligent Power Collection Network
CN103269125B (en) * 2013-05-08 2015-07-01 国家电网公司 Multifunctional integrated configuration platform system of secondary equipment of intelligent substation
CN204103598U (en) * 2014-09-04 2015-01-14 广西电网公司电力科学研究院 A kind of redundancy protection systems of transformer station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102386614A (en) * 2011-11-08 2012-03-21 国电南京自动化股份有限公司 Method for sharing standby protecting device by power equipment in intelligent transformer substation
CN104253483A (en) * 2014-09-04 2014-12-31 广西电网公司电力科学研究院 Redundancy protection method and system of transformer substation
CN104810924A (en) * 2015-05-05 2015-07-29 北京四方继保自动化股份有限公司 Intelligent substation line redundancy protection networking manner implementation method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XUE, RUI: "Line redundancy protection: the application of GOOSE network in digital substation", DIGITAL TECHNOLOGY AND APPLICATION, 28 February 2011 (2011-02-28), pages 66, ISSN: 1007-9416 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109004744A (en) * 2018-06-22 2018-12-14 国家电网有限公司 Distributed transformer substation status monitoring intelligence managing and control system
CN109004744B (en) * 2018-06-22 2024-04-09 国家电网有限公司 Intelligent management and control system for monitoring state of distributed substation
CN109301926A (en) * 2018-11-08 2019-02-01 国网福建省电力有限公司泉州供电公司 A kind of internal bridge intelligent substation and its prepared auto restart blocking method
CN109301926B (en) * 2018-11-08 2024-03-08 国网福建省电力有限公司泉州供电公司 Intelligent substation with internal bridge connection and automatic backup switching locking method thereof
CN111277374A (en) * 2020-01-22 2020-06-12 北京四方继保工程技术有限公司 Method for sampling dual redundant SV of digital device and intelligent substation protection device
CN111277374B (en) * 2020-01-22 2022-12-16 北京四方继保工程技术有限公司 Method for sampling dual redundant SV of digital device and intelligent substation protection device
CN113011046A (en) * 2021-04-19 2021-06-22 华北电力大学 Method for determining redundant structure of relay protection core component
CN113111532A (en) * 2021-04-20 2021-07-13 华北电力大学 National production relay protection core component redundancy number determination method

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