CN103532237A - Wide-area protection control system based on IEEE1588 network timing protocol - Google Patents

Wide-area protection control system based on IEEE1588 network timing protocol Download PDF

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CN103532237A
CN103532237A CN 201310495745 CN201310495745A CN103532237A CN 103532237 A CN103532237 A CN 103532237A CN 201310495745 CN201310495745 CN 201310495745 CN 201310495745 A CN201310495745 A CN 201310495745A CN 103532237 A CN103532237 A CN 103532237A
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protection
area
wide
grid
station
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CN 201310495745
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Chinese (zh)
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周红阳
田文辉
余江
聂娟红
陈朝晖
时伯年
丁晓兵
王学博
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中国南方电网有限责任公司
北京四方继保自动化股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0635Clock or time synchronisation in a network
    • H04J3/0638Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658Clock or time synchronisation among packet nodes
    • H04J3/0661Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays

Abstract

The invention discloses a wide-area protection control system based on an IEEE (Institute of Electrical and Electronics Engineers) 1588 network timing protocol. A station area protection control function for transformer stations is realized through the sharing of data in the transformer stations based on a high-speed data communication network and network timing synchronous data. A regional power grid is formed by a plurality of closely-related transformer stations, realizing a regional protection control function. A wide-area power grid is formed by a plurality of closely-related regional power grids, realizing a wide-area protection control function. Each regional master station in the wide-area power grid is interconnected with a transformer station area substation in the corresponding regional power grid through optical fibers, and the wide-area protection control system is built through the utilization of the whole-grid time synchronization, data synchronization and information sharing of the IEEE 1588 network timing protocol. The protection control system has the advantages of short protection action time and better selectivity. The regional power grids can be more effectively and reasonably controlled and scheduled by the protection control system than the traditional control device which is configured at an interval. Besides, the control function of the wide-area power grid can also be realized, and the requirement on wide-area stable control can be met.

Description

—种基于IEEE1588网络对时协议的广域保护控制系统 - kind of wide-area protection based on IEEE1588 network control system when the agreement

技术领域 FIELD

[0001] 本发明属于电力系统继电保护和安全控制技术领域,特别涉及一种基于IEEE1588网络对时协议的广域保护控制系统。 [0001] The present invention belongs to the technical field system protection and safety power control, particularly to a wide-area protection and control IEEE1588 network time protocol-based system.

背景技术 Background technique

[0002] 随着电网互联及电力市场的发展,电力系统将日渐接近其运行极限,其运行和控制将更为复杂,发生扰动和故障的可能性更大,后果也更严重,这对稳定控制提出了更高的要求。 [0002] With the development of network interconnection and electricity market, power system will become more close to its operating limits, its operation and control will be more complex, more likely to occur disturbances and faults, the consequences are more serious, which is stability control put forward higher requirements.

[0003] 常规的继电保护用于在电力系统发生故障后实现对故障元件的自动和快速切除、隔离故障,以保证人身和设备安全以及无故障部分的正常运行。 [0003] Conventional protection systems for implementing a power failure after the failure of the automatic and rapid removal element, fault isolation, and to ensure personal safety equipment and the trouble-free normal operation portion. 现有的继电保护和安全自动装置不能适应电力系统发展的要求,主要问题如下: The protection and safety requirements of the existing automatic developing apparatus can not meet the power system, the main problems are as follows:

[0004] 保护动作判据都是基于本地测量数据,其选择性要求继电保护只能保护本地网络,没有考虑故障对整个电网的影响,难以对运行方式的不断变化的客观系统作出全面的反映。 [0004] Operating criterion is based on local measurements, which requires selective protection can only protect the local network, does not consider the impact of the failure of the entire power grid, it is difficult to give a full reflection of the changing mode of operation of the objective system . 保护装置相互之间缺乏有效的协调,难以实现系统全局的安全稳定运行,在某些情况下(如发生连锁故障)会恶化系统的运行状况。 The lack of effective protective device coordination between each other, it is difficult to achieve global system safe and stable operation, and in some cases (such as cascading failure occurs) will worsen the health system. 在高负荷时期,这些关键的联络线上的传输功率可能接近输送功率极限。 In the high-load period, the transmission power of these critical tie line conveying power limit may be close. 这种情况下运行的系统抗扰动的能力大大降低,很容易因为一条联络线发生偶然事故断开造成其余线路过负荷而相继断开,从而使事故蔓延,甚至造成系统崩溃。 In this case the ability of anti-disturbance system operation is greatly reduced, it is easy because a fortuitous accident occurred off contact line caused by overloading other lines have been disconnected, so that the accident spread, and even cause system crashes. 美国8.14大停电事故最初就是从几条线路相继断开开始的。 USA 8.14 Blackouts originally several lines have been disconnected from the start.

[0005] 常规的后备保护虽然有比较大的保护范围,但其选择性的获得要以牺牲快速性为代价,动作时间过长,有时候难以发挥应有的保护作用。 [0005] Conventional backup protection, although a relatively large range of protection, but their selectivity is obtained to be fast at the expense of the cost of action for too long, and sometimes difficult to play its due protection. 现有的继电保护配置当中,后备保护的时限整定遵循阶梯时限原则,为了保证选择性,后备保护的动作时限可能高达数秒。 Among the existing configuration protection, backup protection time setting follow the step-time principle, in order to ensure time-bound action selective backup protection may be up to several seconds. 在电网规模和复杂程度越来越大的情况下,这一问题越显突出,至今仍无法很好的解决。 In the grid size and complexity of increasingly large, this problem becomes more obvious, it is still not a good solution.

[0006] 安全自动装置的主要作用是维护电网的安全稳定运行,在紧急情况下采取减负荷、切机以及系统解列运行等方式来避免电网崩溃而导致大停电事故。 [0006] The primary role of the automatic safety means to maintain safe and stable operation of a power take load shedding, cutting machines and operating systems, etc. splitting in an emergency to avoid the collapse results in a large power blackout. 目前电力系统的安全自动装置和继电保护装置是两套独立的系统,二者之间缺乏有效的通信和配合,无法准确反映整个系统的变化情况。 Currently automatic devices and protection devices power system security are two separate systems, the lack of effective communication and cooperation between the two, not accurately reflect the change of the entire system.

[0007] 随着计算机与网络通信技术的发展,特别是光纤的大量敷设,为获得广域电网多点电气量和状态量信息提供了必要的信息基础。 [0007] With the development of computer and network communication technology, in particular a large number of laying fiber to obtain a multi-point wide area power state quantity and the amount of electrical information provides the basis for the necessary information. 同时,随着计算机处理能力的增强,为将继电保护系统和安全自动控制系统集成在一起提供硬件条件。 At the same time, with the enhancement of computer processing power for the protection and safety system provides automatic control system integration hardware conditions together.

发明内容 SUMMARY

[0008] 为克服现有技术中存在的上述问题,本发明提出了一种基于IEEE1588网络对时协议的广域保护控制系统。 [0008] To overcome the above problems present in the prior art, the present invention provides a wide area of ​​the protective control system based upon IEEE1588 network protocol. 该系统可以完成广域电网的线路保护、变压器保护、母线保护、开关失灵保护、低频减载、低压减载功能、广域备自投功能。 The system can complete the wide grid line protection, transformer protection, bus protection, breaker failure protection, frequency load shedding, load shedding function of the low-pressure, wide prepared from the cast function.

[0009] 为实现上述目的,本发明采用如下技术方案: [0009] To achieve the above object, the present invention adopts the following technical solution:

[0010] 一种基于IEEE1588网络对时协议的广域保护控制系统,其特征在于:[0011] 所述广域保护控制系统包括由关系紧密的若干变电站组成的区域电网、由关系紧密的若干区域电网组成的广域电网、每一变电站中设置的站域保护子站、每一区域电网中设置的一区域保护主站、每一广域电网中设置的一广域保护主站; [0010] A wide area network IEEE1588 protective control system based on time protocol, wherein: [0011] Several areas of the protective control system comprises a wide area by a plurality of grid substation consisting close relationship, the close relationship of grid consisting of grid wide, field station substation protection provided in each substation, a grid area of ​​each region is provided protection master station, a master station in each wide area protection provided in the grid;

[0012] 所述广域电网所属的各区域保护主站和广域保护主站、各区域电网所属的各站域保护子站和区域保护主站、各变电站所属的采集执行单元和站域保护子站之间均采用高速数据通讯网络,利用IEEE1588网络对时协议实现全网时间同步,采集数据同步,状态量同步;并在广域保护主站设置主站时钟源; [0012] The master and regional protection master wide area protection grid belongs, the sub-stations protection domain master station and a protection region of the regional power grid belongs, acquisition of an execution unit substation belongs and domain protection station It is used in high-speed data between the sub-station communication network, a network using IEEE1588 time synchronization of the whole network time protocol, data synchronization acquisition, the synchronization state quantity; and master clock source provided in the main station area protection;

[0013] 基于高速数据网络和网络对时协议,利用高速数据网络将变电站内的同步数据上传至变电站内的站域保护子站进行共享,实现变电站站域保护功能;将关联紧密的若干变电站作为一个区域电网,利用高速数据网络将区域内各变电站的同步数据上送到区域保护主站,实现区域保护控制功能;将关联紧密的若干区域电网作为一个广域电网,利用高速数据网络将广域电网内各区域主站的同步数据上送到广域保护主站,实现广域保护控制功能;所述广域保护控制系统通过安装在被保护的广域电网中的广域保护主站、各区域保护主站和站域保护子站实现站域、区域、广域电网的保护和控制。 [0013] Based on the high-speed data networks and the network time protocol, using a high-speed data network synchronization data within the substation uploaded to stand domain protection sub-stations within the substation sharing, substation field protection; associating closely several substations as a grid area, high-speed data network to the synchronous master protection region data of each substation in the region, the region to realize the protective control function; close the associated grid as a plurality of wide area power, high-speed wide area data network synchronization data within each region of the main station to the wide area Network to protect the main station, wide-area protection and control functions; wide area of ​​the protective control system is protected by a wide area in the master station is mounted to be protected wide grid, each protection region domain master and slave stations to achieve protection domain slave stations, regional, wide-area protection and control grid.

[0014] 本发明进一步包括以下优选技术方案: [0014] The present invention further comprises the following preferred technical solution:

[0015] 所述广域保护控制系统的变电站各间隔配置数据采集模块和执行单元,广域保护控制系统利用IEEE1588协议对时机制实现对广域电网各变电站、电厂站域子站所属的各间隔的电压、电流以及状态量的同步测量,并计算所述对应的电压、电流的幅值、相位、频率、功率等信息,通过高速数据网络将所计算的电网电压、电流的幅值、相位、频率、功率等信息以及测量到的状态量数据连同计算时刻的时间信息传送到本变电站站域保护子站,站域保护子站根据本站点的共享同步数据,判断是否本站内的元件出现异常或者故障,进而站域保护子站将本站计算的结果上送至本站所属的区域保护主站。 [0015] The protective control system substation wide intervals each execution unit and the data acquisition module, IEEE1588 system uses wide-area protection and control protocol for each respective interval of substations, power plant station sub-domain of the WAN station belongs when power mechanism voltage, current, and simultaneous measurement of the state quantity, and calculates a voltage corresponding to the magnitude of the current, phase, frequency, power and other information, high-speed data network calculated grid voltage, current amplitude, phase, frequency, power and other information, and the measured data together with the state quantity calculation time to the present time information transmitted substation protection domain sub-station, a station substation protection domain synchronization data according to the shared site, it is determined whether or not the site occurs within the element an exception or fault, the slave station and further stations protection domain to the area protected by the master station belongs, the calculation results of this site. 区域电网中的区域保护主站根据本区域电网站域保护子站上送的共享同步数据和状态信息数据进行计算和分析以判断被保护的区域电网是否发生了异常和故障,进而根据判断的结果和区域电网的综合信息生成相应的控制命令,通过网络下达给相应的站域保护子站。 Regional protection master region grid is calculated and analyzed in accordance with transmitted on this region is electrically site domain protection substation share synchronous data and status information data to determine whether the protected area of ​​the grid of the abnormality and failure, and thus according to the determination result and integrated information generates a corresponding grid area control commands issued to the respective stations through the network substation protection domain. 区域保护主站需要处理多个站域保护子站的数据,才能完成分析和判断,并辅以站域保护子站根据本地的判定结果来协同完成保护和控制功能。 Regional data protection process requires a plurality of master stations to slave stations protected domains, to complete the analysis and determination, and supported by the sub-station the protection domain to collaboratively station protection and control functions in accordance with the determination result of the local. 广域电网中的广域保护主站根据所包含的区域保护主站上送的共享同步数据和状态信息数据进行计算和分析以判断被保护的广域电网是否发生了异常和故障,进而根据判断的结果和广域电网的综合信息生成相应的控制命令,通过网络下达给相应的区域保护主站。 WAN Wide Area Network in accordance with the master protection area to protect the main station included in sync data and sending the shared state information data is calculated and analyzed to determine whether a wide area to be protected and the grid fault abnormality has occurred, and further based on the determination results and integrated information generates a corresponding wide grid control command issued to the corresponding protected area network master station. 广域保护主站需要处理多个区域保护控制的数据,才能完成分析和判断,并辅以区域保护主站根据的判定结果来协同完成保护和控制功能。 Main Station area protection processing data of a plurality of protective control regions, in order to complete the analysis and judgment, and supplemented master protection region according to the determination result of coordinated complete protection and control functions. 站域保护子站同时执行区域保护主站下发的动作命令,同时记录本站的各种信息和命令信息,以备曰后查询分析; Protection Domain station substation protection while performing region issued by the command operation of the master station, while the various information recorded site and command information, said query for later analysis;

[0016] 当所述站域保护子站检测并判断到本站所属线路发生故障时,同时收到区域保护主站发送的跳闸命令和广域保护主站发送的跳闸命令时,通过高速数据网络向相应间隔的采集控制执行单元发跳闸令,跳开故障线路各侧断路器。 When [0016] the station when the station detects the guard sub-domain and determining the relevant line failure site, and also receive the trip trip command master region protected area protection master sends a command transmitted via a high speed data network, to the corresponding collection interval control execution unit issued a trip command to trip the breaker on each side of the fault line.

[0017] 对于广域电网所属的区域电网之间的联络线路和区域电网内的线路,广域保护主站和区域保护主站可以将广域电网内线路分别同时使用差动保护和集成式后备保护。 [0017] For the contact lines and the grid lines in the region, area protection master and the master protection region between the wide area power grid may be relevant to the wide use of electric power lines are simultaneously integrated differential protection and backup protection. 集成式后备保护采用2段式距离保护、2段零序方向保护、TV断线后2段过流保护,过负荷保护。 Integrated backup protection using two-stage distance protection, zero sequence directional protection segment 2, segment 2 after the TV break overcurrent, overload protection. 当广域电网中某条线路因过负荷或者故障导致该线路退出运行,该线路所属区域保护主站或站域保护子站会自动提高同一功率断面线路的过负荷保护电流定值和时间定值,从而避免连锁跳闸事故。 When the overload protection current setting and the time value in a wide power lines because of an overload or fault causes the line out of operation, the protection circuit region belongs to the master station or the slave station is automatically protected domain increase the power of the same section line in order to avoid tripping accidents chain.

[0018] 当所述站域保护子站检测并判断到本站所属线路发生故障时,通过网络向相应间隔的采集控制执行单元发跳闸令跳开故障线路各侧断路器,经过设定延时后,如果故障线路还有电流,则认为该断路器失灵,则由站域保护子站通过网络向相应间隔采集控制执行单元发跳令跳开该故障线路上一级的断路器,避免事故的进一步扩大。 [0018] When the station substation protection domain detects and determines the line failure site belongs to trip the circuit breaker on each side of the respective fault lines spaced acquisition control means performs a trip command sent through the network, through setting the delay after, if there is a fault line current, the circuit breaker is considered failure, station by station through sub-domain protection network element send a jump command to trip the circuit breaker on the faulty line to a corresponding collection interval control executed to avoid accidents further expanded.

[0019] 当所述区域电网发生故障并成功切除故障后,区域保护主站根据区域电网电源分布情况和区域电网运行情况,启动区域备自投功能,恢复供电,缩小失电范围。 [0019] When the occurrence of the failure and successful removal region grid fault, the protection area in accordance with the master station and the power distribution of regional power grid operation region, promoter region prepared from the cast function, power is restored, reduced loss of power range. 区域保护主站可结合区域电网共享同步数据,综合计算区域电网各节点的有功、无功、频率等数据,预估区域备自投动作后的情况,以达到智能恢复供电的目的。 Binding region of the protective region may be shared master synchronization data grid, each node of the active area of ​​the integrated calculation grid reactive power and frequency data, the estimated area where prepared from the cast after the operation, in order to achieve intelligent restore power.

[0020] 所述当广域电网发生影响广域电网安全稳定的大扰动时,广域保护控制系统可以实现切机、切负荷、快速减出力等安全稳定控制功能,该广域保护控制系统是基于IEEE1588的同步数据系统,对时精度可以达到I微秒,完全满足广域电网安全稳定控制的要求。 [0020] The wide area power grid when large disturbances affect the safety and stability of the power grid wide, wide-area protection and control system may implement shedding, load, and so contribute to the rapid reduction stability control function, the control system is a wide-area protection IEEE1588 isochronous data system based on the accuracy can be achieved when I microsecond, fully meet the requirements of secure wide-area power system stability control.

附图说明 BRIEF DESCRIPTION

[0021] 如图1所示为本发明站域保护控制系统结构示意图; [0021] As shown in Figure 1 a schematic view of the present station domain protective control system architecture to the invention;

[0022] 如图2所示为本发明区域保护控制系统结构示意图; [0022] As shown in FIG. 2 is a schematic control system configuration of the protection area of ​​the invention;

[0023] 如图3所示为本发明广域保护控制系统结构示意图。 [0023] As shown in Figure 3 present a schematic view of the structure of the invention WAN protective control system.

具体实施方式 detailed description

[0024] 下面根据说明书附图对本发明的技术方案作进一步详细说明。 [0024] The following detailed description of the accompanying drawings further aspect of the present invention.

[0025] 本发明公开了一种基于IEEE1588网络对时协议的广域保护控制系统,该系统是基于高速数据通讯网络和网络同步对时机制,利用高速数据网络将变电站内的同步数据共享,实现变电站站域保护功能,站域保护系统结构图如图1 ;同时将关联紧密地若干变电站作为一个区域电网,利用高速数据网络将区域内各变电站的同步数据上送到区域主站,实现区域保护控制功能,区域保护系统结构图如图2 ;将关联紧密的若干区域电网作为一个广域电网,利用高速数据网络将广域电网内各区域主站的同步数据上送到广域主站,实现广域保护控制功能,广域保护系统结构图如图3。 [0025] The present invention discloses a control system for area protection IEEE1588 network protocol based on the time, the system is based on a high-speed data communications networks and network time synchronization mechanism, high-speed data network synchronization data within the substation sharing, substation protection field, the protection field station system configuration shown in Figure 1; while several closely associated substation as a grid area, high-speed data network to the synchronous data area of ​​the main station in the region of each substation, to achieve protection region control function, as shown in FIG area 2 protection system configuration; closely associated with the number of a wide area of ​​the grid as the grid, using a high speed data network to a wide area on the synchronization master station data of each region of the main wide area power grid, to achieve wide-area protection and control functions, a wide area protection system architecture shown in Figure 3. 所述保护控制系统通过安装在被保护的广域电网各区域主站和站域子站实现站域、区域、广域电网的保护和控制。 The control system for the station protection domain, area, wide-area protection and control grid mounted in the respective regions by the master and slave stations are protected domain sub-wide grid.

[0026] 所述广域保护控制系统的变电站各间隔配置数据采集模块和执行单元,所述广域保护控制系统利用IEEE1588网络对时协议实现对广域电网各变电站各间隔的电压、电流以及位置状态的同步测量得到各变电站的同步数据,并计算每一间隔对应的电压、电流的幅值、相位、频率、功率,通过高速数据网络将所计算的电压、电流的幅值、相位、频率、功率等数据连同计算时刻的时间信息传送到本变电站站域保护子站,站域保护子站根据本变电站的共享同步数据,判断是否本变电站内的元件出现异常或者故障,站域保护子站将本变电站的同步数据以及判断所述元件是否出现异常或故障的结果上送至本站所属的区域保护主站,站域保护子站将结合本站判断结果,执行区域保护主站下发的动作命令,同时记录本变电站站的各种同步数据和命令信息,以备日后 [0026] The protective control system substation wide intervals each data acquisition module and an execution unit, said protective control system using IEEE1588 wide area networks WAN grid voltage substation for each time interval of the protocol, and the current position synchronous measurement state synchronized data of each substation, and calculates for each interval corresponding to the voltage, current amplitude, phase, frequency, power, high-speed data network to the calculated voltage, current amplitude, phase, frequency, power and other data along with the calculation time time transmit information to present substation domain guard sub-stations, stations domain guard sub-station according to the shared synchronization data present substation, determination elements within whether this substation abnormal or failure, station domain guard sub-station this synchronization data and determining the elements of the substation whether there is a region of the protective master results to the abnormality or failure of the station belongs, the station substation protection domain binding site determination result sent by the master station performing the protection operation region command, and recording data according to the present substation various synchronization and command information for future 询分析;[0027] 区域保护主站根据本区域电网站域保护子站上送的共享同步数据进行计算和分析以判断被保护的区域电网是否发生了异常和故障,进而根据判断的结果和区域电网的运行状态生成相应的控制命令,通过网络下达给相应的站域保护子站;区域保护主站实时存储收集到的各子站上送的同步数据数据,并记录下达给站域保护子站的各种命令,以备日后查询分析; Inquiry analysis; [0027] region to protect the main station is calculated and analyzed according to the shared synchronization data transmitted on this region is electrically site domain guard sub-station is to determine protection domain power abnormality has occurred and the fault, and further based on the determination result and the area operating state of the grid generates a corresponding control command issued to the respective stations domain guard sub-station through a network; sending on each sub-station region protection master real-time storage collected synchronization data, and records issued to stop domain guard sub-station the various commands to prepare for future analysis;

[0028] 广域保护主站根据所包含的区域保护主站上送的共享同步数据进行计算和分析以判断被保护的广域电网是否发生了异常和故障,进而根据判断的结果和广域电网的运行状态生成相应的控制命令,通过高速数据网络下达给相应的区域保护主站;广域保护主站同时实时存储各区域保护主站上送的同步数据,并记录下达给区域保护主站的各种命令,以备日后查询分析。 [0028] The master station area protection is calculated and analyzed to determine whether the protected wide grid fault abnormality has occurred and synchronization data transmitted according to the shared area included in the master protection, according to the judgment result of further wide-area grid and generating a respective operating state of the control command issued by the high-speed data network to a protected area corresponding to the master; the master station in real time while the wide area protected storage area of ​​each sync data transmission on the protected primary station, and issued to the recording region of the protective master various commands, for future analysis. 当所述站域保护子站检测并判断到本站所属线路发生故障时,同时收到区域保护主站发送的跳闸命令和广域保护主站发送的跳闸命令时,通过高速数据网络向相应间隔的采集控制执行单元发跳闸令,跳开故障线路各侧断路器。 When the station substation protection domain detects and determines the relevant line failure site, while the received command and trip the trip command area protection area protected master station transmits a master transmission, the high-speed data network to the respective interval the hair collection control unit performs a trip command to trip the breaker on each side of the fault line.

[0029] 对于广域电网所属的区域电网之间的联络线路,广域保护主站用差动保护进行故障判定,对于具有分支的联络线路,将距离广域电网中电源最近的分支的一端作为差动保护的一侧,将其它分支的电流做相量和计算后作为差动保护的另外一侧,将两侧电流的相量和的幅值作为差动电流,将两侧电流相量差的幅值作为制动电流,采用比率制动特性进行判定;广域保护主站可以将广域电网内所有区域电网联络线路同时使用差动保护来判定故障线路,当发生电流互感器断线时,根据控制字的设置来决定是否闭锁差动保护; [0029] For the contact line between the wide area power grid belongs, area protection master differential protection fault determination, with respect to the contact line branches, as a wide area from one end of the grid nearest branch power side of the differential protection, the other current branch, as do the other side of the phase differential protection and computation, the amount of phase and amplitude on both sides of the current as the differential current, the difference between both sides of the current phasors the magnitude of the current as a brake, the braking characteristic is determined using the ratio; the master station may be protected by a wide area wide grid within all regions of tie line differential protection use to determine the fault line, the current transformer when a disconnection occurs the setting of the control word to determine whether the locking differential protection;

[0030] 对于广域电网所属的区域电网之间的联络线路,广域保护主站利用收到的联络线路的同步数据进行集成式后备保护,保护采用2段式距离保护、2段零序方向保护、TV断线后2段过流保护,过负荷保护; [0030] For the contact line between the master station area protection wide area power grid belongs using the received synchronization data line contact is integrated backup protection, distance protection protection using 2-stage, two-stage Zero sequence protection, overcurrent protection section 2 after the TV break, overload protection;

[0031] 对于广域电网所属的区域电网之间的联络线路,当差动保护、距离保护I段、零序保护I段均未判定出故障时,使用线路方向关联矩阵来判定故障点并延时切除故障,根据被保护广域电网系统的拓扑结构形成广域电网系统关联矩阵,同时需根据各区域保护主站上送的断路器的位置状态信息实时修改广域电网系统关联矩阵,采用方向元件进行故障线路的筛选;联络线路所属的区域保护主站将当前线路的方向测量元件的正反向判断结果传送到广域保护主站,广域保护主站根据被保护的广域电力系统拓扑结构的关联矩阵以及各区域保护主站上送的方向元件判断结果,筛选出故障线路。 [0031] For the contact line between the wide area power grid belongs, when the differential protection, distance protection Stage I, Stage I no zero-sequence protection fault determination using the correlation matrix to determine the direction of line fault point and extends when fault clearance, wide-area grid system formed according to the topology of the matrix is ​​associated with a wide area power system protection, while the need to send the state according to the position of each region of the protective circuit breaker master information real-time changes wide grid system correlation matrix using the direction screening element of the fault line; protected area belongs to the master contact line direction of the measuring current line of the positive and negative determination result is transmitted to the wide-area protection element master station, the master station is protected area protection wide area power system topology according to correlation matrix structure and the direction of transmission on each element region of the protective master determination result, the fault line filter.

[0032] 当广域电网中某条联络线路因过负荷或者故障导致该线路退出运行,该线路所属区域保护主站自动提高同一功率断面线路的过负荷保护电流定值和时间定值,从而避免连锁跳闸事故。 [0032] When a wide strip grid line contact failure caused by overload or the line out of operation, the protection circuit region belongs to the master station automatically increases the overload protection current setting and time setting section of the same power line, so as to avoid chain tripping accidents.

[0033] 当广域电网系统电压低于预定值时,广域保护主站启动低压减载,选择系统电压最低的区域电网,然后给该区域电网对应的区域保护主站发送低压减载的命令; [0033] When the wide-area power grid system voltage is below the predetermined value, the master boot area protection voltage load shedding, choose the lowest system voltage of the grid area, and then transmits the command to the grid voltage load shedding in the region corresponding to the region to protect the primary station ;

[0034] 重新核算广域电网内所有区域电网的系统电压,再次选择系统电压最低的区域电网,给对应的区域保护主站发送低压减载的命令; [0034] The system voltage recalculate all areas within the wide area power grid, the system select the lowest voltage region grid again, to protect the region corresponding to the master station transmits the command voltage load shedding;

[0035] 重复以上步骤,直到广域电网系统电压恢复到允许范围。 [0035] The above steps are repeated until the system voltage returns to the grid wide allowable range.

[0036] 当广域电网系统频率低于预定值时,广域保护主站启动低频减载,选择系统频率最低的区域电网,然后对应的区域保护主站发送低频减载的命令; [0036] When the wide-area power system frequency is lower than the predetermined value, the master boot area protection frequency load shedding, select the lowest power system frequency region, and the region corresponding to the master station transmits protection low load shedding command;

[0037] 重新核算广域电网内所有区域电网的系统频率,再次选择系统频率最低的区域电网,给对应区域保护主站发送低频减载的命令; [0037] recalculate all areas of the grid system frequency within the wide area power grid, the system selects the lowest frequency region grid again, to protect the region corresponding to the master station transmits a low-frequency load shedding command;

[0038] 重复以上步骤,直到广域电网系统频率恢复到允许范围。 [0038] The above steps are repeated until the system frequency of the wide-area network restoration allowable range.

[0039] 对于区域电网内线路,区域保护主站采用差动保护进行故障判定,对于具有分支的区域电网内线路,将距离区域电网系统电源最近的分支的一端作为差动保护的一侧,将其它分支的电流做相量和计算后作为差动保护的另外一侧,将两侧电流的相量和的幅值作为差动电流,将两侧电流相量差的幅值作为制动电流,采用比率制动特性进行判定;区域保护主站可以将区域电网内所有线路同时使用差动保护来判定故障线路,当发生电流互感器断线时,根据控制字的设置来决定是否闭锁差动保护; [0039] The power lines to the inner region, the region to protect the main station uses differential protection fault determination, the inner region having a branched power lines, an end of the nearest branch power supply grid system as one side region of the differential protection, the other current branch, as do the other side of the phase differential protection and computation, and the magnitude of the phasor current as a differential current on both sides, both sides of the current magnitude of the phasor difference between the current as a brake, using the ratio restraint characteristic determination; protected area can be the master for all grid lines in the area to determine simultaneously the fault line differential protection, the current transformer when a disconnection occurs, depending on the setting of the control word to determine whether the locking differential protection ;

[0040] 对于属于某一变电站内的线路和其他元件,站域保护子站利用该变电站各间隔上送的同步数据进行全站集成式后备保护,其中线路保护采用2段式距离保护、2段零序方向保护、TV断线后的2段过流保护、过负荷保护;主变及后备保护采用分相差动保护、零序差动保护、复合电压闭锁方向过流保护; [0040] and the other elements belonging to the line within a certain substation station substation protection domain synchronous data transmission on each of the intervals of the integrated station substation full backup protection, wherein the circuit protection using 2-stage distance protection, segment 2 zero sequence directional protection, overcurrent protection section 2 after the TV break, overload protection; main and backup protection Current differential protection using zero sequence differential protection, overcurrent protection composite voltage blocking direction;

[0041] 对于区域电网内线路,当差动保护和距离保护I段、零序保护I段均未判定出故障时,使用线路方向关联矩阵来判定故障点并延时切除故障,根据被保护区域电网系统的拓扑结构形成区域电网系统关联矩阵,同时需根据各站域保护子站上送的断路器位置状态信息实时修改区域电网系统关联矩阵,采用方向元件进行故障线路的筛选,站域保护子站将当前线路的方向测量元件的正反向判断结果传送到区域保护主站,根据被保护的区域电网系统拓扑结构的关联矩阵以及各站域保护子站上送的方向元件判断结果,筛选出故障线路; [0041] For the region of the grid lines, when the differential protection and protection from Stage I, Stage I no zero-sequence protection fault determination using the correlation matrix to determine the direction of the line the point of failure and fault time delay removal, according to the protected area the topology of the grid system correlation matrix forming region grid system, while the regional power grid systems to be modified in real time according to the circuit breaker associated matrix location status information sent by each substation protection domain stations, using the direction of the fault line filter element, the sub-station the protection domain Analyzing the results of the forward and reverse direction of the current line station measuring element is transmitted to the master station area protection, depending on the direction of the feed element on the protected area of ​​the incidence matrix grid system topology of each station and sub-station the protection domain determination result, screened fault line;

[0042] 当区域电网中某条线路因过负荷或者故障导致该线路退出运行,该线路所属站域保护子站自动提高同一功率断面的线路过负荷保护电流定值和时间定值,从而避免连锁跳闸事故。 [0042] When the regional power grid in certain routes because of an overload or fault causes the line out of operation, the line of stations domain guard sub-station to automatically raise the line of the same power section of the overload protection current setting and time setting, thereby avoiding chain tripping accidents.

[0043] 当区域电网系统电压低于预定值时,区域电网保护主站启动低压减载,选择系统电压最低的变电站母线,根据广域保护主站下发的低压减载的命令,在该母线上切除级别最低的负荷; [0043] When the regional power grid system voltage is below the predetermined value, the master protection region grid start voltage load shedding, select the lowest voltage substation bus system, according to a command issued by the master station area protection voltage load shedding in the bus removal of the load on the lowest level;

[0044] 重新核算区域电网内所有变电站母线的电压,再次选择系统电压最低的变电站母线,根据广域保护主站下发的低压减载的命令,切除该母线上级别最低的负荷; [0044] recalculate all substation bus voltage in the region of the grid, the lowest selected voltage substation bus system again, according to a command issued by the master station area protection voltage load shedding, the removal of the lowest level of the load on the bus;

[0045] 重复以上步骤,直到区域电网系统电压恢复到允许范围。 [0045] The above steps are repeated until the system voltage returns to the grid area of ​​the allowable range.

[0046] 当区域电网系统频率低于预定值时,区域电网保护主站启动低频减载,选择系统频率最低的变电站母线,根据广域保护主站下发的低频减载的命令,然后在该母线上切除级别最低的负荷; [0046] When the power system frequency region lower than a predetermined value, the master protection region grid start frequency load shedding, select the lowest frequency substation bus system, delivered by the area protection according to the master frequency load shedding command, then the removal of the lowest load level of the bus;

[0047] 重新核算区域电网内所有变电站母线的频率,再次选择系统频率最低的变电站母线,根据广域保护主站下发的低频减载的命令,切除该母线上级别最低的负荷; [0047] recalculate all substation bus frequency grid in the region, the system selects the lowest frequency substation bus again, according to a command issued by the master station wide frequency load shedding protection, the removal of the minimum level of the load on the bus;

[0048] 重复以上步骤,直到区域电网系统频率恢复到允许范围。 [0048] The above steps are repeated until the system returns to the grid frequency region allowable range.

[0049] 当所述站域保护子站检测并判断到本站所属线路发生故障时,同时收到区域保护主站发送的跳闸命令和广域保护主站发送的跳闸命令时,通过高速数据网络向相应间隔的采集控制执行单元发跳闸令,跳开故障线路各侧断路器, When [0049] the station when the station detects the guard sub-domain and determining the relevant line failure site, and also receive the trip trip command master region protected area protection master sends a command transmitted via a high speed data network, collection interval corresponding to the execution control unit send a trip command to trip the breaker on each side of the fault line,

[0050] 当所述站域保护子站检测并判断到本站所属线路发生故障时,通过高速数据网络向相应间隔的采集控制执行单元发跳闸令跳开故障线路各侧断路器,经过设定延时后,如果故障线路还有电流,则认为该断路器失灵,则由站域保护子站通过网络向相应间隔采集控制执行单元发跳令跳开该故障线路上一级的断路器,避免事故的进一步扩大。 [0050] When the station substation protection domain detects and determines the line failure site belongs to trip the circuit breaker on each side of the respective fault lines spaced acquisition control means performs a trip command issued by the high-speed data network, through setting after the delay, if there is a fault line current, the circuit breaker is considered failure, station by station sub-domain protection control execution unit acquisition interval corresponding jump command sent over the network to trip the circuit breaker on a fault of the line, avoiding further expansion of the accident.

[0051] 当所述区域电网发生故障并成功切除故障后,区域保护主站根据区域电网电源分布情况和区域电网运行情况,启动区域备自投功能,恢复供电,缩小失电范围。 [0051] When the occurrence of the failure and successful removal region grid fault, the protection area in accordance with the master station and the power distribution of regional power grid operation region, promoter region prepared from the cast function, power is restored, reduced loss of power range. 区域保护主站可结合区域电网共享同步数据,综合计算区域电网各节点的有功、无功、频率等数据,预估区域备自投动作后的情况,以达到智能恢复供电的目的。 Binding region of the protective region may be shared master synchronization data grid, each node of the active area of ​​the integrated calculation grid reactive power and frequency data, the estimated area where prepared from the cast after the operation, in order to achieve intelligent restore power.

[0052] 当所述广域电网发生影响广域电网安全稳定的大扰动时,广域保护控制系统可以实现切机、切负荷、快速减出力等安全稳定控制功能,该广域保护控制系统是基于IEEE1588的同步数据系统,对时精度可以达到I微秒,完全满足广域电网安全稳定控制的要求。 [0052] When the wide area power grid safe and stable and high power wide disturbing influences, the control system may implement wide-area protection shedding, load, and so contribute to the rapid reduction stability control function, the control system is a wide-area protection IEEE1588 isochronous data system based on the accuracy can be achieved when I microsecond, fully meet the requirements of secure wide-area power system stability control.

Claims (10)

  1. 1.一种基于IEEE1588网络对时协议的广域保护控制系统,其特征在于: 所述广域保护控制系统包括由关系紧密的若干变电站组成的区域电网、由关系紧密的若干区域电网组成的广域电网、每一变电站中设置的站域保护子站、每一区域电网中设置的一区域保护主站、每一广域电网中设置的一广域保护主站; 所述广域电网所属的各区域保护主站和广域保护主站、各区域电网所属的各站域保护子站和区域保护主站、各变电站所属的采集执行单元和站域保护子站之间均采用高速数据通讯网络,利用IEEE1588网络对时协议实现全网时间同步,采集数据同步,状态量同步;并在广域保护主站设置主站时钟源; 基于高速数据网络和网络对时协议,利用高速数据网络将变电站内的同步数据上传至变电站内的站域保护子站进行共享,实现变电站站域保护功能;将关联紧密的 An IEEE1588 network control system when the wide-area protection protocol-based, characterized in that: said protective control system comprising a wide area by a plurality of power substation close relationship composed of several grid areas close relationship wide composition grid domain, domain protection station substation slave stations each provided, in a region of each area of ​​grid provided protection master station, a master station in each wide area protection provided in the grid; grid belongs to the wide area each master station and a wide area protection area to protect the main station, each sub-station the protection domain master station and a protected area of ​​the regional power grid belongs, between the acquisition unit and the execution station substation protection domain belongs substations are high-speed data communication networks , the whole network using IEEE1588 network time protocol for time synchronization, acquisition data synchronization, the synchronization state quantity; and master clock source provided in the main area protection station; based high-speed data networks and the network time protocol, using a high-speed data network substation synchronization data uploaded to the station in the protected domain in the substation slave stations sharing, substation protection domain; associating closely 若干变电站作为一个区域电网,利用高速数据网络将区域内各变电站的同步数据上送到区域保护主站,实现区域保护控制功能;将关联紧密的若干区域电网作为一个广域电网,利用高速数据网络将广域电网内各区域主站的同步数据上送到广域保护主站,实现广域保护控制功能;所述广域保护控制系统通过安装在被保护的广域电网中的广域保护主站、各区域保护主站和站域保护子站实现站域、区域、广域电网的保护和控制。 Several substation as a grid area, high-speed data network to the synchronous master protection region data of each substation in the region, the region to realize the protective control function; close the associated grid as a plurality of wide area power, high-speed data network, the synchronization data sent in each region of the main station in the wide area protection master grid, wide-area protection and control functions; wide area of ​​the protective control system installed in a wide area to be protected by a wide area to protect the primary grid stations, regional protection domain master and slave stations to achieve protection domain slave stations, regional, wide-area protection and control grid.
  2. 2.根据权利要求1所述的广域保护控制系统,其特征在于: 所述广域保护控制系统的变电站各间隔配置数据采集模块和执行单元,所述广域保护控制系统利用IEEE1588网络对时协议实现对广域电网各变电站各间隔的电压、电流以及位置状态、即状态量的同步测量得到各变电站的同步数据,并计算每一间隔对应的电压、电流的幅值、相位、频率、功率,通过高速数据网络将所计算的电压、电流的幅值、相位、频率、功率等数据连同计算时刻的时间信息传送到本变电站站域保护子站,站域保护子站根据本变电站的共享同步数据,判断是否本变电站内的元件出现异常或者故障,站域保护子站将本变电站的同步数据以及判断所述元件是否出现异常或故障的结果上送至本站所属的区域保护主站,同时记录本变电站站的各种同步数据和命令信息,以备日后查询分析; The wide-area protection and control system according to claim 1, wherein: said protective control system substation wide intervals each data acquisition module and an execution unit, said protective control system using wide area network when IEEE1588 protocol of the voltage, current and position state of each substation wide spaced grid, i.e., a synchronization state quantity measured at each substation synchronization data, and calculates for each interval corresponding to the voltage, current amplitude, phase, frequency, power , the calculated voltage, current amplitude, phase, frequency, power and other data along with the time information is transmitted to the calculation time domain present substation protection sub-station through a high speed data network, the station sub-station synchronization domain according to the shared protection according substation data, it is judged whether the element present in the substation abnormal or malfunction, the station substation protection field of the present sync data and determining the elements of the substation whether there is a region of the protective master results to the abnormality or failure of the station belongs, while various synchronization data recording according to the present substation and command information to prepare for future analysis; 区域保护主站根据本区域电网站域保护子站上送的共享同步数据进行计算和分析以判断被保护的区域电网是否发生了异常和故障,进而根据判断的结果和区域电网的运行状态生成相应的控制命令,通过网络下达给相应的站域保护子站;区域保护主站实时存储收集到的各子站上送的同步数据数据,并记录下达给站域保护子站的各种命令,以备日后查询分析; 广域保护主站根据所包含的区域保护主站上送的共享同步数据进行计算和分析以判断被保护的广域电网是否发生了异常和故障,进而根据判断的结果和广域电网的运行状态生成相应的控制命令,通过高速数据网络下达给相应的区域保护主站;广域保护主站同时实时存储各区域保护主站上送的同步数据,并记录下达给区域保护主站的各种命令,以备曰后查询分析; 当所述站域保护子站检测并判断到 Region to protect the primary station is calculated and analyzed according to the shared synchronization data transmitted on this region is electrically site domain guard sub-station is to determine protection domain power abnormality has occurred and a fault, thereby generating respective based on the results and operating status area grid determination control commands, issued by the network station to the corresponding sub-domain protection station; sending from the protected area of ​​the master is stored in real time collected data for each sub-station synchronization, and records various commands issued to the slave station station protection domain to Preparation for future analysis; area protection master station is calculated and analyzed according to the shared synchronization data sent by the master protection region included to determine whether a wide area to be protected and the grid fault abnormality has occurred, and further based on the result of judgment wide power generating field operating state corresponding control command issued to the corresponding region of the protective high-speed data network master; the master area protection while storing the synchronization data sent in real time over each area to protect the main station, and to protect the main recording area Release various commands stations, said analysis for later; when the protection domain station detects and determines the sub-station 站所属线路发生故障时,同时收到区域保护主站发送的跳闸命令和广域保护主站发送的跳闸命令时,通过高速数据网络向相应间隔的采集控制执行单元发跳闸令,跳开故障线路各侧断路器。 When the line fails station belongs, and receives the trip trip command sent by the master protection area and wide-area protection command sent by the master, to the corresponding collection interval control execution unit issued a trip command to trip the fault line through a high speed data network each circuit breaker.
  3. 3.根据权利要求1或2所述的广域保护控制系统,其特征在于: 对于广域电网所属的区域电网之间的联络线路,广域保护主站用差动保护进行故障判定,对于具有分支的联络线路,将距离广域电网中电源最近的分支的一端作为差动保护的一侧,将其它分支的电流做相量和计算后作为差动保护的另外一侧,将两侧电流的相量和的幅值作为差动电流,将两侧电流相量差的幅值作为制动电流,采用比率制动特性进行判定;广域保护主站可以将广域电网内所有区域电网联络线路同时使用差动保护来判定故障线路,当发生电流互感器断线时,根据控制字的设置来决定是否闭锁差动保护; 对于广域电网所属的区域电网之间的联络线路,广域保护主站利用收到的联络线路的同步数据进行集成式后备保护,保护采用2段式距离保护、2段零序方向保护、TV断线后2段过流保 The wide-area protection and control system according to claim 1, wherein: the region for contact between the power line grid belongs to a wide area, wide-area protection master differential protection fault determination, with respect to branch line contact, the wide area from the end nearest the grid power supply as a side branch of the differential protection, the other current branch, as do the other side of the phase differential protection and computation, both the current phasor magnitude as the differential current, both the magnitude of the difference between the current phasor current as a brake, the braking characteristic is determined using the ratio; area protection master station may all areas of tie wide area network line use to determine the fault line differential protection, the current transformer when a disconnection occurs, depending on the setting of the control word to determine whether blocking differential protection; region for contact between the power line grid belongs to a wide area, main area protection station uses the received sync data line contact is integrated backup protection, distance protection protection using 2-stage, two-stage zero sequence directional protection, overcurrent protection section 2 after disconnection TV ,过负荷保护; 对于广域电网所属的区域电网之间的联络线路,当差动保护、距离保护I段、零序保护I段均未判定出故障时,使用线路方向关联矩阵来判定故障点并延时切除故障,根据被保护广域电网系统的拓扑结构形成广域电网系统关联矩阵,同时需根据各区域保护主站上送的断路器的位置状态信息实时修改广域电网系统关联矩阵,采用方向元件进行故障线路的筛选;联络线路所属的区域保护主站将当前线路的方向测量元件的正反向判断结果传送到广域保护主站,广域保护主站根据被保护的广域电力系统拓扑结构的关联矩阵以及各区域保护主站上送的方向元件判断结果,筛选出故障线路。 , Overload protection; for the contact line between the wide area power grid belongs, when the differential protection, distance protection Stage I, Stage I no zero-sequence protection fault determination using the correlation matrix to determine the direction of line fault point and delay fault clearance, wide-area grid system formed according to the topology of the matrix is ​​associated with a wide area power system protection, while real need to modify the system wide power transmission state according to the position correlation matrix on each region of the protective circuit breaker master information, screening element using a direction of the fault line; protected area belongs to the master contact line direction of the measuring current line of the positive and negative determination result is transmitted to the wide-area protection element master station, the master station area protection according to power a wide area to be protected incidence matrix system topology and the direction of transmission on each element region of the protective master determination result, the fault line filter. 当广域电网中某条联络线路因过负荷或者故障导致该线路退出运行,该线路所属区域保护主站自动提高同一功率断面线路的过负荷保护电流定值和时间定值,从而避免连锁跳闸事故。 When a wide strip grid line contact failure caused by overload or the line out of operation, the protection circuit region belongs to the master station automatically increases the overload protection current setting and time setting section of the same power line, so as to avoid tripping accidents chain .
  4. 4.根据权利要求1-3任一权利要求所述的广域保护控制系统,其特征在于: 当广域电网系统电压低于预定值时,广域保护主站启动低压减载,选择系统电压最低的区域电网,然后给该区域电网对应的区域保护主站发送低压减载的命令; 重新核算广域电网内所有区域电网的系统电压,再次选择系统电压最低的区域电网,给对应的区域保护主站发送低压减载的命令; 重复以上步骤,直到广域电网系统电压恢复到允许范围。 4. The control system of any of claims 1-3 area protection according to one of the preceding claims, wherein: when the wide-area power grid system voltage is below a predetermined value, a low pressure area protection master boot load shedding selection system voltage lowest regional power grid, and then sent to the grid area corresponding to the region protected by the master station of the command voltage load shedding; recalculate all areas of the grid system voltage within wide grid system voltage selection area lowest grid again, to protect the region corresponding to the master sends a command voltage load shedding; above steps are repeated until the system voltage returns to the grid wide allowable range.
  5. 5.根据权利要求1-3任一权利要求所述的广域保护控制系统,其特征在于: 当广域电网系统频率低于预定值时,广域保护主站启动低频减载,选择系统频率最低的区域电网,然后对应的区域保护主站发送低频减载的命令; 重新核算广域电网内所有区域电网的系统频率,再次选择系统频率最低的区域电网,给对应区域保护主站发送低频减载的命令; 重复以上步骤,直到广域电网系统频率恢复到允许范围。 5. The system of any of claims 1-3 of the wide-area protection and control one of the preceding claims, wherein: when the power system frequency wide area below the predetermined value, the master boot area protection frequency load shedding, frequency selection system lowest regional power grid, then the region corresponding to protect the primary station transmits a low-frequency load shedding command; recalculate all areas of the grid system frequency within the wide area power grid, the system selects the lowest frequency region grid again, transmitted to the corresponding low-frequency region to protect the primary reduction station upload command; above steps are repeated until the frequency of the system wide area network restoration allowable range.
  6. 6.根据权利要求1或2所述的广域保护控制系统,其特征在于: 对于区域电网内线路,区域保护主站采用差动保护进行故障判定,对于具有分支的区域电网内线路,将距离区域电网系统电源最近的分支的一端作为差动保护的一侧,将其它分支的电流做相量和计算后作为差动保护的另外一侧,将两侧电流的相量和的幅值作为差动电流,将两侧电流相量差的幅值作为制动电流,采用比率制动特性进行判定;区域保护主站可以将区域电网内所有线路同时使用差动保护来判定故障线路,当发生电流互感器断线时,根据控制字的设置来决定是否闭锁差动保护; 对于属于某一变电站内的线路和其他元件,站域保护子站利用该变电站各间隔上送的同步数据进行全站集成式后备保护,其中线路保护采用2段式距离保护、2段零序方向保护、TV断线后的2段过流保护、过负荷 The wide-area protection and control system according to claim 1, wherein: the inner area of ​​the grid lines, the master protection zone fault determination using differential protection for the power line having a branch in the region, the distance power grid system area proximate one end of a side branch of the differential protection, the other current branch, as do the other side of the phase differential protection and computation, the amount of phase and amplitude of the current as a difference on both sides driving current, the difference between both sides of the current phasor current magnitude as a brake, the braking characteristic is determined using the ratio; protected area can be the master for all grid lines in the area to determine simultaneously the fault line differential protection when current occurs when transformer disconnection, depending on the setting of the control word to determine whether blocking differential protection; and other elements belonging to the line within a certain substation station substation protection domain synchronous data transmission on each of the intervals station integrated full substation backup protection type, in which the line protection using 2-stage distance protection, zero sequence directional protection segment 2, segment 2 after the TV break overcurrent, overload 护;主变及后备保护采用分相差动保护、零序差动保护、复合电压闭锁方向过流保护; 对于区域电网内线路,当差动保护和距离保护I段、零序保护I段均未判定出故障时,使用线路方向关联矩阵来判定故障点并延时切除故障,根据被保护区域电网系统的拓扑结构形成区域电网系统关联矩阵,同时需根据各站域保护子站上送的断路器位置状态信息实时修改区域电网系统关联矩阵,采用方向元件进行故障线路的筛选,站域保护子站将当前线路的方向测量元件的正反向判断结果传送到区域保护主站,根据被保护的区域电网系统拓扑结构的关联矩阵以及各站域保护子站上送的方向元件判断结果,筛选出故障线路; 当区域电网中某条线路因过负荷或者故障导致该线路退出运行,该线路所属站域保护子站自动提高同一功率断面的线路过负荷保护电流定值和时 Supporting; Main and backup protection Current Differential protection using zero sequence differential protection, overcurrent compound voltage blocking direction; for the power lines in the region, when the differential protection and protection from Stage I, Stage I no zero-sequence protection it is determined that the fault, using the correlation matrix to determine the direction of the line the point of failure and fault time delay removal, incidence matrix forming region grid system in accordance with the topology of the protected area of ​​the grid system, and sent at the same time according to the slave stations each station domain protection circuit breaker modified in real time status information of the location area of ​​the grid system correlation matrix using the directional element fault line screening station substation protection domain measurement direction of forward and reverse current line element determination result is transmitted to the master station protected area, according to the area to be protected grid system incidence matrix topology and sent by the stations domain protection substation direction element determination result screened fault line; when the regional power grid in certain routes because of an overload or fault causes the line out of operation, the line of stations domain substation protection overload protection automatically increased and the current value when the power line of the same cross-section 定值,从而避免连锁跳闸事故。 Value, so as to avoid tripping accidents chain.
  7. 7. 根据权利要求1所述的广域保护控制系统,其特征在于: 当区域电网系统电压低于预定值时,区域电网保护主站启动低压减载,选择系统电压最低的变电站母线,根据广域保护主站下发的低压减载的命令,在该母线上切除级别最低的负荷; 重新核算区域电网内所有变电站母线的电压,再次选择系统电压最低的变电站母线,根据广域保护主站下发的低压减载的命令,切除该母线上级别最低的负荷; 重复以上步骤,直到区域电网系统电压恢复到允许范围。 7. Wide protective control system according to claim 1, wherein: when the area of ​​the grid system voltage is below the predetermined value, the master protection region grid start voltage load shedding, select the lowest voltage substation bus system, in accordance with broad voltage load shedding commands issued by the master protection domain, in the removal of the bus load of the lowest level; recalculate all substation bus voltage in the region of the grid, the lowest selected voltage substation bus system again, the wide-area protection master issued voltage load shedding command, removal of the lowest level of the load on the bus; above steps are repeated until the system voltage returns to the grid area of ​​the allowable range.
  8. 8.根据权利要求1所述的广域保护控制系统,其特征在于: 当区域电网系统频率低于预定值时,区域电网保护主站启动低频减载,选择系统频率最低的变电站母线,根据广域保护主站下发的低频减载的命令,然后在该母线上切除级别最低的负荷; 重新核算区域电网内所有变电站母线的频率,再次选择系统频率最低的变电站母线,根据广域保护主站下发的低频减载的命令,切除该母线上级别最低的负荷; 重复以上步骤,直到区域电网系统频率恢复到允许范围。 The wide-area protection and control system according to claim 1, wherein: when the power system frequency region lower than a predetermined value, the master protection region grid start frequency load shedding, select the lowest frequency substation bus system, in accordance with broad frequency load shedding commands issued by the master protection domain, then excised at the lowest load level bus; recalculate all substation bus frequency grid in the region, the system selects the lowest frequency substation bus again, wide-area protection master issued frequency load shedding command, removal of the minimum level of the load on the bus; above steps are repeated until the system returns to the grid frequency region allowable range.
  9. 9.根据权利要求1或2所述的广域保护控制系统,其特征在于: 当所述站域保护子站检测并判断到本站所属线路发生故障时,通过高速数据网络向相应间隔的采集控制执行单元发跳闸令跳开故障线路各侧断路器,经过设定延时后,如果故障线路还有电流,则认为该断路器失灵,则由站域保护子站通过网络向相应间隔采集控制执行单元发跳令跳开该故障线路上一级的断路器,避免事故的进一步扩大。 9. The wide-area protection and control system according to claim 12, wherein: when the protection domain station detects and determines whether the sub-station site relevant to line failure, high-speed data network to the corresponding collection interval issued a trip command execution control unit to trip the breaker on each side of the fault line, after a set delay time, if there is a fault line current, is considered failure of the circuit breaker, the protection domain by the station substation interval corresponding to the acquisition and control via a network execution unit hair jumping make a trip the circuit breaker on the fault line, to avoid further expansion of the accident. 当所述区域电网发生故障并成功切除故障后,区域保护主站根据区域电网电源分布情况和区域电网运行情况,启动区域备自投功能,恢复供电,缩小失电范围;区域保护主站结合区域电网共享同步数据,综合计算区域电网各节点的有功、无功、频率等数据,预估区域备自投动作后的情况,以达到智能恢复供电的目的。 After the occurrence of the failure and successful removal region grid fault, the protection area in accordance with the master station and the power distribution of regional power grid operation region, promoter region prepared from the cast function, power is restored, reduced loss of power range; binding region of the protective zone master Network synchronization data shared, each node of the integrated active region calculating power, reactive power and frequency data, prepared from the estimated region where after the administration operation, in order to achieve intelligent restore power.
  10. 10.根据权利要求1或2所述的广域保护控制系统,其特征在于: 当所述广域电网发生影响广域电网安全稳定的大扰动时,广域保护控制系统可以实现切机、切负荷、快速减出力等安全稳定控制功能,该广域保护控制系统是基于IEEE1588的同步数据系统,对时精度可以达到I微秒,完全满足广域电网安全稳定控制的要求。 10. The wide-area protection and control system according to claim 12, wherein: when the wide area power grid safe and stable and high power wide disturbing influences, the control system may implement wide-area protection shedding, load, Save rapid output stability control and other security features, the wide-area protection and control system is based on the IEEE1588 system synchronization data, when accuracy can be achieved for I microsecond, fully meet the requirements of secure wide-area power system stability control.
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CN104219066B (en) * 2014-09-17 2018-09-25 中国南方电网有限责任公司 Multicast communication method in a data protection system wide area network
CN105515169A (en) * 2014-09-26 2016-04-20 南京南瑞继保电气有限公司 Multilevel spare power automatic switching system, priority cooperation method, and construction method
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