CN105449676B - Power distribution network Area Node network generation method and system - Google Patents
Power distribution network Area Node network generation method and system Download PDFInfo
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- H—ELECTRICITY
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Abstract
本发明提供一种配电网区域节点网络生成方法与系统,构建CIM树状拓扑结构,将CIM树状拓扑结构中的虚拟支路消除,并将属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构,根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点,恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。整个过程中,以CIM模型为基础,经过CIM拓扑和电气拓扑两个层面的收缩获得区域节点网络,获得高度简化区域节点网络,并且获得的区域节点网络中内部设备对配电网可靠性的贡献相同,能在不影响配电网可靠性计算的同时大大减少计算规模,提高计算效率。
The invention provides a distribution network regional node network generation method and system, which constructs a CIM tree topology structure, eliminates virtual branches in the CIM tree topology structure, and merges transformer winding branches belonging to the same double-winding transformer into a Single transformer branch, obtain electrical tree topology, according to the switch branch, divide the electrical tree topology into multiple mutually independent regions, and use each mutually independent region as a single node, obtain multiple regional nodes, and restore the switch The connection relationship between branches among multiple regional nodes is obtained to obtain the regional node network. In the whole process, based on the CIM model, the regional node network is obtained through the contraction of the CIM topology and the electrical topology, and the highly simplified regional node network is obtained, and the contribution of the internal equipment in the regional node network to the reliability of the distribution network is obtained Similarly, it can greatly reduce the calculation scale and improve the calculation efficiency without affecting the reliability calculation of the distribution network.
Description
技术领域technical field
本发明涉及配电网技术领域,特别是涉及配电网区域节点网络生成方法与系统。The invention relates to the technical field of distribution network, in particular to a method and system for generating a regional node network of a distribution network.
背景技术Background technique
配电网是由架空线路、电缆、杆塔、配电变压器、隔离开关、无功补偿电容以及一些附属设施等组成的,在电力网中起重要分配电能作用的网络。配电网络的拓扑分析是根据配电电气元件的连接关系,把整个配电网络看成线与点结合的拓扑图,然后根据电源结点、开关结点等进行整个网络的拓扑连线分析,它是配电网络进行状态估计、潮流计算、故障定位、隔离及供电恢复、网络重构等其它分析的基础。The distribution network is composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive power compensation capacitors, and some ancillary facilities. It plays an important role in distributing electric energy in the power network. The topology analysis of the power distribution network is based on the connection relationship of the distribution electrical components, and the entire power distribution network is regarded as a topological diagram combining lines and points, and then the topological connection analysis of the entire network is carried out according to the power supply nodes, switch nodes, etc. It is the basis for state estimation, power flow calculation, fault location, isolation and power restoration, network reconfiguration and other analysis of power distribution network.
配电网的可靠性分析仍停留在离线分析的层面,相对而言对其计算速度要求并不高。随着智能电网建设的不断深入,现代社会对电力供应的可靠性要求越来越高,对配电网进行可靠性分析已经从传统的离线分析向在线分析过渡,对配电网可靠性分析计算的计算性能要求很高,需要配电网可靠性建模方面有重大突破。The reliability analysis of the distribution network is still at the level of offline analysis, and relatively speaking, the requirements for its calculation speed are not high. With the continuous deepening of smart grid construction, modern society has higher and higher requirements for the reliability of power supply, and the reliability analysis of distribution network has transitioned from traditional offline analysis to online analysis. The computational performance requirements of the system are very high, and a major breakthrough in distribution network reliability modeling is required.
配电网可靠性分析计算的数据是基于配电网区域节点网络,若能提供一种准确且简化的配电网区域节点网络,则必然能够有效降低配电网可靠性分析计算的规模,提高计算效率。The data for distribution network reliability analysis and calculation is based on distribution network regional node network. If an accurate and simplified distribution network regional node network can be provided, it will be able to effectively reduce the scale of distribution network reliability analysis and calculation and improve the reliability of distribution network. Computational efficiency.
发明内容Contents of the invention
基于此,有必要针对目前尚无准确且精简的配电网区域节点网络的问题,提供一种能够生成准确且精简的配电网区域节点网络的方法与系统。Based on this, it is necessary to provide a method and system capable of generating an accurate and simplified distribution network regional node network for the problem that there is currently no accurate and simplified distribution network regional node network.
一种配电网区域节点网络生成方法,包括步骤:A method for generating a regional node network of a distribution network, comprising the steps of:
构建CIM(Common Information Model,通用信息模型)树状拓扑结构,其中,CIM树状拓扑结构包括虚拟支路和开关支路;Build a CIM (Common Information Model, Common Information Model) tree topology, wherein the CIM tree topology includes virtual branches and switch branches;
将虚拟支路消除,并将CIM树状拓扑结构中属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构;Eliminate virtual branches and merge transformer winding branches belonging to the same double-winding transformer in the CIM tree topology into a single transformer branch to obtain an electrical tree topology;
根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点;According to the switch branch, the electrical tree topology is divided into multiple mutually independent regions, and each mutually independent region is regarded as a single node to obtain multiple regional nodes;
恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。The connection relationship between switch branches among multiple regional nodes is restored, and the regional node network is obtained.
一种配电网区域节点网络生成系统,包括:A distribution network regional node network generation system, comprising:
构建模块,用于构建CIM树状拓扑结构,其中,CIM树状拓扑结构包括虚拟支路和开关支路;A building block for constructing a CIM tree topology, wherein the CIM tree topology includes a virtual branch and a switch branch;
电气结构获取模块,用于将虚拟支路消除,并将CIM树状拓扑结构中属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构;The electrical structure acquisition module is used to eliminate the virtual branch and merge the transformer winding branches belonging to the same double-winding transformer in the CIM tree topology into a single transformer branch to obtain the electrical tree topology;
区域节点获取模块,用于根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点;The regional node acquisition module is used to divide the electrical tree topology into multiple mutually independent regions according to the switch branch, and use each mutually independent region as a single node to obtain multiple regional nodes;
区域节点网络获取模块,用于恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。The regional node network acquisition module is used to restore the connection relationship between switch branches among multiple regional nodes, and obtain the regional node network.
本发明配电网区域节点网络生成方法与系统,构建CIM树状拓扑结构,将CIM树状拓扑结构中的虚拟支路消除,并将属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构,根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点,恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。整个过程中,以CIM模型为基础,经过CIM拓扑和电气拓扑两个层面的收缩获得区域节点网络,获得高度简化区域节点网络,并且获得的区域节点网络中内部设备对配电网可靠性的贡献相同,能在不影响配电网可靠性计算的同时大大减少计算规模,提高计算效率。The method and system for generating the regional node network of the distribution network in the present invention constructs a CIM tree topology structure, eliminates virtual branches in the CIM tree topology structure, and merges transformer winding branches belonging to the same double-winding transformer into a single transformer branch According to the switch branch, the electrical tree topology is divided into multiple mutually independent regions, and each mutually independent region is used as a single node to obtain multiple regional nodes, and the switch branch is restored in A connection relationship among multiple regional nodes is obtained to obtain a regional node network. In the whole process, based on the CIM model, the regional node network is obtained through the contraction of the CIM topology and the electrical topology, and the highly simplified regional node network is obtained, and the contribution of the internal equipment in the regional node network to the reliability of the distribution network is obtained Similarly, it can greatly reduce the calculation scale and improve the calculation efficiency without affecting the reliability calculation of the distribution network.
附图说明Description of drawings
图1为本发明配电网区域节点网络生成方法第一个实施例的流程示意图;Fig. 1 is a schematic flow chart of the first embodiment of the distribution network regional node network generation method of the present invention;
图2为本发明配电网区域节点网络生成方法第二个实施例的流程示意图;Fig. 2 is a schematic flow chart of the second embodiment of the distribution network regional node network generation method of the present invention;
图3为配电网馈线的CIM树状拓扑结构示意图;Fig. 3 is a schematic diagram of a CIM tree topology of a distribution network feeder;
图4为本发明配电网区域节点网络生成系统第一个实施例的结构示意图;Fig. 4 is a schematic structural diagram of the first embodiment of the distribution network regional node network generation system of the present invention;
图5为本发明配电网区域节点网络生成系统第二个实施例的结构示意图。Fig. 5 is a schematic structural diagram of a second embodiment of the distribution network regional node network generation system of the present invention.
具体实施方式Detailed ways
为了便于解释本发明配电网区域节点网络生成方法与系统的技术放案及其带来的效果,下面将首先针对其应用的基本原理进行详细描述。In order to facilitate the explanation of the technical solution of the distribution network regional node network generation method and system of the present invention and the effects brought by it, the basic principles of its application will be described in detail below.
在电力系统中,出于信息交互和功能整合的考虑,越来越多的应用程序在传输和使用数据的时候均遵循IEC(International Electrotechnical Commission,国际电工技术委员会)组织推荐的CIM规范。一个符合CIM规范的配电网馈线模型往往以相应XML(Exensive Markup Language,可扩展标示语言)字符串为载体,其中包含该配电网馈线模型的最完备信息,如该馈线的拓扑结构、设备类型、基本参数、地理位置等。目前配电网的建设往往是有环的,但运行的时候是解环的。也就是说,单条馈线往往存在与其他馈线的联络关系,但这种联络关系在正常运行的时候是断开的。可见单条馈线的CIM模型应该是严格的树状拓扑结构。In the power system, for the sake of information interaction and functional integration, more and more applications follow the CIM specification recommended by the IEC (International Electrotechnical Commission, International Electrotechnical Commission) organization when transmitting and using data. A distribution network feeder model conforming to the CIM specification is often carried by the corresponding XML (Extensive Markup Language, Extensible Markup Language) string, which contains the most complete information of the distribution network feeder model, such as the topology of the feeder, equipment Type, basic parameters, geographic location, etc. At present, the construction of the distribution network often has loops, but the loops are broken during operation. That is to say, a single feeder often has a connection relationship with other feeders, but this connection relationship is disconnected during normal operation. It can be seen that the CIM model of a single feeder should be a strict tree topology.
由于配电网馈线的CIM模型是最完备的,事实上在不同的场合很可能不需要所有的信息。具体而言,在CIM模型中客观存在的电气设备不会直接连接,而是需要通过联络节点对象和终端节点对象来建立连接关系,这两种对象仅为逻辑层面的对象,在客观世界中是不存在的。在进行配电网潮流计算、短路计算、可靠性计算等分析计算的时候,是不需要联络节点对象和终端节点对象的,需要加以简化。通过分析CIM对拓扑结构的定义可见,可以找到与每一联络节点相关联的终端节点,并把所有终端节点所直接连接的电气设备连接到同一电气点,即实现了对联络节点和终端节点的收缩化简。在CIM模型中变压器的不同绕组均为独立的对象,也通过联络节点和终端节点相连。在进行各种分析计算的时候需要将变压器的多个绕组考虑成一个整体。在10kV中压配电网中所涉及变压器均为双绕组变压器,在对联络节点和终端节点进行收缩化简时,当遇到双绕组变压器的时候可直接将属于同一变压器的两个绕组合并成一条支路,从而实现对双绕组变压器的收缩化简。Since the CIM model of the distribution network feeder is the most complete, in fact all the information may not be needed in different occasions. Specifically, the objectively existing electrical equipment in the CIM model will not be directly connected, but needs to establish a connection relationship through the contact node object and the terminal node object. These two objects are only objects at the logical level. In the objective world, they are nonexistent. When performing power flow calculation, short circuit calculation, reliability calculation and other analysis and calculation of distribution network, there is no need for contact node objects and terminal node objects, which need to be simplified. By analyzing the definition of the topology structure of CIM, it can be seen that the terminal nodes associated with each contact node can be found, and all the electrical equipment directly connected to the terminal nodes can be connected to the same electrical point, that is, the connection between the contact nodes and the terminal nodes can be realized. Shrink Simplify. The different windings of the transformer are independent objects in the CIM model and are also connected through contact nodes and terminal nodes. When performing various analysis calculations, it is necessary to consider multiple windings of the transformer as a whole. The transformers involved in the 10kV medium-voltage distribution network are all double-winding transformers. When shrinking and simplifying the contact node and terminal node, when encountering a double-winding transformer, the two windings belonging to the same transformer can be directly combined to form A branch, so as to realize the contraction and simplification of the double-winding transformer.
经过上述的分析,即可得到配电网的电气拓扑模型,目前对配电网的潮流计算、短路计算等均可利用这种电气拓扑模型。当前得到的配电网电气拓扑包括所有与功率传输直接相关的电气设备,如输电线路、变压器、开关支路等。如前所述,在进行可靠性计算的时候,仅需考虑各种开关支路对故障的响应时间,而被开关支路分割的多个连通区域各自内部的设备参数及拓扑关系对可靠性的贡献是可归并的。After the above analysis, the electrical topology model of the distribution network can be obtained. At present, this electrical topology model can be used for the power flow calculation and short circuit calculation of the distribution network. The currently obtained distribution network electrical topology includes all electrical equipment directly related to power transmission, such as transmission lines, transformers, switch branches, etc. As mentioned above, when performing reliability calculations, only the response time of various switch branches to faults needs to be considered, and the internal equipment parameters and topological relationships of the multiple connected areas divided by switch branches have an impact on reliability. Contributions are poolable.
如图1、图2所示,一种配电网区域节点网络生成方法,包括步骤:As shown in Figure 1 and Figure 2, a method for generating a distribution network regional node network includes steps:
S100:构建CIM树状拓扑结构,其中,CIM树状拓扑结构包括虚拟支路和开关支路。S100: Construct a CIM tree topology structure, wherein the CIM tree topology structure includes virtual branches and switch branches.
CIM是一个抽象模型,用于描述电力企业的所有主要对象,特别是与电力运行有关的对象。CIM通过提供一种用对象类和属性及他们之间关系来表示电力系统资源的标准方法,CIM方便了实现不同卖方独立开发的能量管理系统应用的集成,多个独立开发的完整能量管理系统之间的集成,以及能量管理系统和其它涉及电力系统运行的不同方面的系统,使得这些应用或系统能够不依赖于信息的内部表示而访问公共数据和交换信息来实现的。CIM树状拓扑结构中包括节点和支路两大部分,其中,端点包括联络节点和终端节点,支路包括虚拟支路、交流线线路段、变压器绕组以及开关支路。虚拟支路用于表征电气设备逻辑连接关系。如图3所示的配电网馈线的CIM树状拓扑结构,其中,节点为联络节点和终端节点,共1642个,支路包括联络节点与终端节点间的虚拟支路、交流线路段、变压器绕组及各种开关支路,共1641条。CIM is an abstract model used to describe all main objects of electric power enterprises, especially those related to electric power operation. By providing a standard method of representing power system resources with object classes and attributes and their relationships, CIM facilitates the integration of energy management system applications independently developed by different vendors, and the integration of multiple independently developed complete energy management systems. The integration between energy management systems and other systems involved in different aspects of power system operation enables these applications or systems to access common data and exchange information independently of the internal representation of information. The CIM tree topology includes two parts: nodes and branches. The endpoints include contact nodes and terminal nodes, and the branches include virtual branches, AC line segments, transformer windings, and switch branches. Virtual branches are used to represent the logical connection relationship of electrical equipment. As shown in Figure 3, the CIM tree topology structure of the distribution network feeder, in which the nodes are contact nodes and terminal nodes, a total of 1642, the branch includes the virtual branch between the contact node and the terminal node, AC line section, transformer There are 1641 windings and various switch branches.
具体来说,在其中一个实施例中,步骤S100包括:Specifically, in one of the embodiments, step S100 includes:
S120:获取配电网馈线的标准CIM模型。S120: Obtain a standard CIM model of a distribution network feeder.
S140:将配电网馈线的标准CIM模型映射成CIM树状拓扑结构。S140: Map the standard CIM model of the distribution network feeder into a CIM tree topology.
配电网馈线的标准CIM模型是电力系统行业已知的基本模型,具体来说,可以将配电网馈线的标准CIM模型映射成CIM树状拓扑结构。The standard CIM model of the distribution network feeder is a basic model known in the power system industry. Specifically, the standard CIM model of the distribution network feeder can be mapped into a CIM tree topology.
S200:将虚拟支路消除,并将CIM树状拓扑结构中属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构。S200: Eliminate virtual branches, and merge transformer winding branches belonging to the same double-winding transformer in the CIM tree topology into a single transformer branch to obtain an electrical tree topology.
在CIM树状拓扑结构中,联络节点和终端节点仅具有逻辑上的涵义,在物理环境中并不存在实体,在进行各项电气分析时也不需要其信息,可以对其进行收缩化简。在CIM模型中每一变压器绕组为独立对象,在电气拓扑中应将属于统一双绕组变压器的两个变压器绕组对象合并成同一条变压器支路,对其进行收缩化简。In the CIM tree topology, the contact nodes and terminal nodes only have logical meanings, and there are no entities in the physical environment, and their information is not needed for various electrical analysis, which can be contracted and simplified. In the CIM model, each transformer winding is an independent object. In the electrical topology, the two transformer winding objects belonging to the unified double-winding transformer should be merged into the same transformer branch, and it should be shrunk and simplified.
S300:根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点。S300: Divide the electrical tree topology structure into multiple mutually independent areas according to the switch branches, and use each mutually independent area as a single node to obtain multiple area nodes.
在CIM树状拓扑结构中可以获得开关支路,依据馈线中的开关支路将电气树状拓扑结构分割成多个相互独立区域,将每一区域合并为一个节点,即获得区域节点。In the CIM tree topology, the switch branch can be obtained. According to the switch branch in the feeder, the electrical tree topology is divided into multiple independent areas, and each area is merged into a node, that is, the area node is obtained.
S400:恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。S400: Restoring the connection relationship between the switch branches among multiple regional nodes to obtain a regional node network.
恢复开关支路在区域节点间的连接关系,则得到最终的区域节点网络。相比于标准的CIM模型而言,本发明配电网区域节点网络生成方法所得的区域节点网络高度简化,同时不失可靠性计算的准确性。Restoring the connection relationship between switch branches among regional nodes, the final regional node network is obtained. Compared with the standard CIM model, the regional node network obtained by the distribution network regional node network generation method of the present invention is highly simplified without losing the accuracy of reliability calculation.
本发明配电网区域节点网络生成方法,构建CIM树状拓扑结构,将CIM树状拓扑结构中的虚拟支路消除,并将属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构,根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点,恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。整个过程中,以CIM模型为基础,经过CIM拓扑和电气拓扑两个层面的收缩获得区域节点网络,获得高度简化区域节点网络,并且获得的区域节点网络中内部设备对配电网可靠性的贡献相同,能在不影响配电网可靠性计算的同时大大减少计算规模,提高计算效率。The distribution network regional node network generation method of the present invention constructs a CIM tree topological structure, eliminates virtual branches in the CIM tree topological structure, and merges transformer winding branches belonging to the same double-winding transformer into a single transformer branch, Obtain the electrical tree topology structure, divide the electrical tree topology structure into multiple independent areas according to the switch branch, and use each independent area as a single node, obtain multiple area nodes, and restore the switch branch in multiple The connection relationship between the regional nodes is used to obtain the regional node network. In the whole process, based on the CIM model, the regional node network is obtained through the contraction of the CIM topology and the electrical topology, and the highly simplified regional node network is obtained, and the contribution of the internal equipment in the regional node network to the reliability of the distribution network is obtained Similarly, it can greatly reduce the calculation scale and improve the calculation efficiency without affecting the reliability calculation of the distribution network.
如图2所示,在其中一个实施例中,步骤S400包括:As shown in Figure 2, in one embodiment, step S400 includes:
S420:分别获取每条开关支路两端的电气节点。S420: Obtain electrical nodes at both ends of each switch branch respectively.
具体来说,首先从CIM树状拓扑结构中获得开关支路,为便于记录,可以将获得的开关支路构建为开关支路集合SBr,开关支路集合SBr中包括多个开关支路Br。再获取每条开关支路Br两点的电气节点。Specifically, firstly, the switch branch is obtained from the CIM tree topology. For the convenience of recording, the obtained switch branch can be constructed as a switch branch set S Br , and the switch branch set S Br includes multiple switch branches Br. Then obtain the electrical nodes of the two points of each switch branch Br.
S440:识别每条开关支路两端电气节点所属连通子图。S440: Identify the connected subgraph to which the electrical nodes at both ends of each switch branch belong.
具体来说,可以先判断CIM树状拓扑结构中的连通性,查找CIM树状拓扑结构中所有的连通子图,以及连通子图的节点对象。在查找到的连通子图中,识别每条开关支路Br两端电气节点所属连通子图。Specifically, the connectivity in the CIM tree topology can be judged first, and all connected subgraphs and node objects of the connected subgraphs in the CIM tree topology can be found. In the found connected subgraph, identify the connected subgraph to which the electrical nodes at both ends of each switch branch Br belong.
S460:在多个区域节点中查找每条开关支路两端电气节点所属连通子图的区域节点。S460: Find the region nodes of the connected subgraph to which the electrical nodes at both ends of each switch branch belong in the plurality of region nodes.
在步骤S300获得的多个区域节点中,查找每条开关支路Br两端电气节点所属连通子图的区域节点。Among the multiple area nodes obtained in step S300 , search for the area nodes of the connected subgraph to which the electrical nodes at both ends of each switch branch Br belong.
S480:通过相应的开关支路连接查找到的区域节点,获得区域节点网络。S480: Connect the found regional nodes through corresponding switch branches to obtain a regional node network.
通过开关支路Br连接开关支路Br两端电气节点所属连通子图的区域节点,获得区域节点网络。The regional node network is obtained by connecting the regional nodes of the connected subgraph to which the electrical nodes at both ends of the switching branch Br belong through the switching branch Br.
在其中一个实施例中,CIM树状拓扑结构包括联络节点和终端节点,将CIM树状拓扑结构中的虚拟支路消除的步骤包括:In one of the embodiments, the CIM tree topology includes contact nodes and terminal nodes, and the step of eliminating the virtual branch in the CIM tree topology includes:
遍历CIM树状拓扑结构,获取CIM树状拓扑结构中的联络节点,以每个联络节点为研究对象,分别进行如下操:查找与单个联络节点相连的虚拟支路,获得虚拟支路集合,记录虚拟支路集合中每条虚拟支路对侧的终端节点,获得虚拟支路终端节点集合,删除虚拟支路集合中的虚拟支路,将以虚拟支路终端节点集合中终端节点为端点的支路修改为以单个联络节点为对应端点,并删除已发生修改的终端节点。Traverse the CIM tree topology structure, obtain the contact nodes in the CIM tree topology structure, take each contact node as the research object, and perform the following operations respectively: find the virtual branch connected to a single contact node, obtain the virtual branch set, record The terminal node on the opposite side of each virtual branch in the virtual branch set obtains the virtual branch terminal node set, deletes the virtual branch in the virtual branch set, and uses the terminal node in the virtual branch terminal node set as the end point of the branch The path is modified to use a single contact node as the corresponding end point, and the modified end node is deleted.
下面将采用实例,详细解释说明虚拟支路消除的过程。An example will be used below to explain in detail the process of eliminating the virtual branch.
1、首先枚举得到CIM拓扑结构中的所有联络节点构成的联络节点集合Sc。1. First enumerate and obtain a contact node set S c composed of all contact nodes in the CIM topology.
2、对集合Sc中的每个元素c执行如下操作:2. Perform the following operations on each element c in the set S c :
2.1、在CIM拓扑结构中遍历获得所有与联络节点c相连的虚拟支路,记录所有这些虚拟支路构成的集合Sct (c),以及每条虚拟支路对侧终端节点构成的集合St (c)。2.1. In the CIM topology, traverse to obtain all the virtual branches connected to the contact node c, record the set S ct (c) of all these virtual branches, and the set S t of the opposite terminal nodes of each virtual branch (c) .
2.2、删除集合Sct (c)中的所有虚拟支路。2.2. Delete all virtual branches in the set S ct (c) .
2.3将所有以St (c)中终端节点为端点的支路改为以c为对应端点,并删去此终端节点。2.3 Change all the branches with the terminal node in S t (c) as the terminal to c as the corresponding terminal, and delete this terminal node.
在其中一个实施例中,将CIM树状拓扑结构中属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路的步骤包括:In one of the embodiments, the step of merging the transformer winding branches belonging to the same double-winding transformer in the CIM tree topology into a single transformer branch includes:
根据CIM树状拓扑结构,枚举得到CIM树状拓扑结构中变压器虚拟节点,以单个变压器虚拟节点为研究对象,分别进行如下操作:遍历CIM树状拓扑结构,获得两条与单个变压器虚拟节点相连的变压器绕组支路,计算两条变压器绕组支路合并后的参数信息,在两条变压器绕组支路对侧节点间生成单条支路,并根据参数信息赋以单条支路相应参数值,删除两条变压器绕组支路和单个变压器虚拟节点。According to the CIM tree topology structure, enumerate the transformer virtual nodes in the CIM tree topology structure, take a single transformer virtual node as the research object, and perform the following operations respectively: traverse the CIM tree topology structure, and obtain two virtual nodes connected to a single transformer Transformer winding branch, calculate the parameter information after the two transformer winding branches are merged, generate a single branch between the nodes on the opposite side of the two transformer winding branches, and assign the corresponding parameter value of the single branch according to the parameter information, delete the two transformer winding branches and a single transformer virtual node.
下面将采用实例,详细解释说明将CIM树状拓扑结构中属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路的过程。An example will be used below to explain in detail the process of merging transformer winding branches belonging to the same double-winding transformer in the CIM tree topology into a single transformer branch.
1、枚举得到CIM拓扑结构中的所有变压器虚拟节点构成的变压器集合St。1. Enumerate and obtain the transformer set S t composed of all transformer virtual nodes in the CIM topology.
2、对集合St中的每个元素t执行如下操作:2. Perform the following operations on each element t in the set S t :
2.1、在原CIM拓扑结构中遍历获得两条与变压器虚拟节点t相连的变压器绕组支路。2.1. Traverse the original CIM topology to obtain two transformer winding branches connected to the virtual node t of the transformer.
2.2、计算刚刚找到的两条变压器绕组支路合并后的各种参数信息。2.2. Calculate various parameter information after the two transformer winding branches just found are merged.
2.3、在两条变压器绕组支路对侧节点间生成一条支路,赋以相应参数值。2.3. Generate a branch between the nodes on the opposite side of the two transformer winding branches, and assign corresponding parameter values.
2.4、删除两条变压器绕组支路及变压器虚拟节点t。2.4. Delete two transformer winding branches and transformer virtual node t.
如图4所示,一种配电网区域节点网络生成系统,包括:As shown in Figure 4, a distribution network regional node network generation system includes:
构建模块100,用于构建CIM树状拓扑结构。The construction module 100 is used to construct the CIM tree topology.
电气结构获取模块200,用于将CIM树状拓扑结构中的虚拟支路消除,并将CIM树状拓扑结构中属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构。The electrical structure acquisition module 200 is used to eliminate the virtual branches in the CIM tree topology, and merge the transformer winding branches belonging to the same double-winding transformer in the CIM tree topology into a single transformer branch to obtain the electrical tree topology. Topology.
区域节点获取模块300,用于根据CIM树状拓扑结构中的开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点。The regional node acquisition module 300 is configured to divide the electrical tree topology into multiple mutually independent regions according to the switch branches in the CIM tree topology, and use each mutually independent region as a single node to obtain multiple regional nodes .
区域节点网络获取模块400,用于恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。The regional node network acquisition module 400 is configured to restore the connection relationship between switch branches among multiple regional nodes, and obtain the regional node network.
本发明配电网区域节点网络生成系统,构建模块100构建CIM树状拓扑结构,电气结构获取模块200将CIM树状拓扑结构中的虚拟支路消除,并将属于同一双绕组变压器的变压器绕组支路合并成单条变压器支路,获得电气树状拓扑结构,区域节点获取模块300根据开关支路,将电气树状拓扑结构分割成多个相互独立区域,并将每个相互独立区域作为单个节点,获得多个区域节点,区域节点网络获取模块400恢复开关支路在多个区域节点间的连接关系,获得区域节点网络。整个过程中,以CIM模型为基础,经过CIM拓扑和电气拓扑两个层面的收缩获得区域节点网络,获得高度简化区域节点网络,并且获得的区域节点网络中内部设备对配电网可靠性的贡献相同,能在不影响配电网可靠性计算的同时大大减少计算规模,提高计算效率。In the distribution network regional node network generation system of the present invention, the construction module 100 constructs a CIM tree topology structure, and the electrical structure acquisition module 200 eliminates the virtual branches in the CIM tree topology structure, and the transformer winding branches belonging to the same double-winding transformer Circuits are merged into a single transformer branch to obtain an electrical tree topology, and the regional node acquisition module 300 divides the electrical tree topology into multiple mutually independent regions according to the switch branch, and regards each mutually independent region as a single node, After obtaining multiple regional nodes, the regional node network acquisition module 400 restores the connection relationship between the switch branches among the multiple regional nodes, and obtains the regional node network. In the whole process, based on the CIM model, the regional node network is obtained through the contraction of the CIM topology and the electrical topology, and the highly simplified regional node network is obtained, and the contribution of the internal equipment in the regional node network to the reliability of the distribution network is obtained Similarly, it can greatly reduce the calculation scale and improve the calculation efficiency without affecting the reliability calculation of the distribution network.
如图5所示,在其中一个实施例中,区域节点网络获取模块400包括:As shown in Figure 5, in one of the embodiments, the regional node network acquisition module 400 includes:
电气节点获取单元420,用于分别获取每条开关支路两端的电气节点。The electrical node acquiring unit 420 is configured to respectively acquire the electrical nodes at both ends of each switch branch.
识别单元440,用于识别每条开关支路两端电气节点所属连通子图。The identifying unit 440 is configured to identify the connected subgraph to which the electrical nodes at both ends of each switch branch belong.
查找单元460,用于在多个区域节点中查找每条开关支路两端电气节点所属连通子图的区域节点。The search unit 460 is configured to search the regional nodes of the connected subgraph to which the electrical nodes at both ends of each switch branch belong among the multiple regional nodes.
区域节点网络获取单元480,用于通过相应的开关支路连接查找到的区域节点,获得区域节点网络。The regional node network acquiring unit 480 is configured to connect the searched regional nodes through corresponding switch branches to obtain the regional node network.
如图5所示,在其中一个实施例中,构建模块100包括:As shown in Figure 5, in one of the embodiments, the building block 100 includes:
标准模型获取单元120,用于获取配电网馈线的标准CIM模型.A standard model obtaining unit 120, configured to obtain a standard CIM model of the distribution network feeder.
构建单元140,用于将配电网馈线的标准CIM模型映射成CIM树状拓扑结构。The construction unit 140 is configured to map the standard CIM model of the distribution network feeder into a CIM tree topology.
在其中一个实施例中,CIM树状拓扑结构包括联络节点和终端节点;In one of the embodiments, the CIM tree topology includes contact nodes and terminal nodes;
电气结构获取模块200包括:The electrical structure acquisition module 200 includes:
第一遍历单元,用于遍历CIM树状拓扑结构,获取CIM树状拓扑结构中的联络节点.The first traversal unit is used to traverse the CIM tree topology and obtain the contact nodes in the CIM tree topology.
第一重复单元,以每个联络节点为研究对象,分别控制如下单元进行相应操作。The first repeating unit, taking each contact node as the research object, respectively controls the following units to perform corresponding operations.
虚拟支路查找单元,用于查找与单个联络节点相连的虚拟支路,获得虚拟支路集合。The virtual branch search unit is configured to search for virtual branches connected to a single contact node to obtain a set of virtual branches.
虚拟支路终端节点获取单元,用于记录虚拟支路集合中每条虚拟支路对侧的终端节点,获得虚拟支路终端节点集合。;The virtual branch terminal node obtaining unit is configured to record the terminal node on the opposite side of each virtual branch in the virtual branch set, and obtain the virtual branch terminal node set. ;
第一删除单元,用于删除虚拟支路集合中的虚拟支路。The first deleting unit is configured to delete a virtual branch in the virtual branch set.
修改单元,用于将以虚拟支路终端节点集合中终端节点为端点的支路修改为以单个联络节点为对应端点,并删除已发生修改的终端节点。The modifying unit is configured to modify a branch whose endpoint is a terminal node in the virtual branch terminal node set to a single contact node as a corresponding endpoint, and delete the modified terminal node.
在其中一个实施例中,电气结构获取模块200还包括:In one of the embodiments, the electrical structure obtaining module 200 also includes:
变压器虚拟节点获取单元,用于根据CIM树状拓扑结构,枚举得到CIM树状拓扑结构中变压器虚拟节点。The transformer virtual node acquisition unit is configured to enumerate and obtain the transformer virtual nodes in the CIM tree topology according to the CIM tree topology.
第二重复单元,用于以单个变压器虚拟节点为研究对象,分别控制如下单元进行相应操作。The second repeating unit is used to take a single transformer virtual node as the research object, and respectively control the following units to perform corresponding operations.
第二遍历单元,用于遍历CIM树状拓扑结构,获得两条与单个变压器虚拟节点相连的变压器绕组支路。The second traversal unit is configured to traverse the CIM tree topology to obtain two transformer winding branches connected to a single transformer virtual node.
参数计算单元,用于计算两条变压器绕组支路合并后的参数信息。The parameter calculation unit is used to calculate the parameter information after the two transformer winding branches are merged.
参数赋予单元,用于在两条变压器绕组支路对侧节点间生成单条支路,并根据参数信息赋以单条支路相应参数值。The parameter assigning unit is used to generate a single branch between nodes on opposite sides of the two transformer winding branches, and assign corresponding parameter values to the single branch according to parameter information.
第二删除单元,用于删除两条变压器绕组支路和单个变压器虚拟节点。The second deletion unit is used to delete two transformer winding branches and a single transformer virtual node.
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.
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CN107229595B (en) * | 2017-05-10 | 2020-11-03 | 广西大学 | Power grid real-time robust state estimation method based on SOA (service oriented architecture) |
CN109840391A (en) * | 2019-03-26 | 2019-06-04 | 国网北京市电力公司 | The model creation method and device of on-load regulator transformer |
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CN115408196B (en) * | 2022-10-31 | 2023-03-24 | 国网四川省电力公司电力科学研究院 | High fault tolerance power grid fault diagnosis method and system |
CN117874984B (en) * | 2024-03-13 | 2024-05-28 | 武汉易晨创想科技有限公司 | CIM model-based distribution network topology graph generation method and device |
CN119048639B (en) * | 2024-10-28 | 2025-03-21 | 烟台海颐软件股份有限公司 | A method for automatically drawing feeder ring diagram of distribution network based on fast force guidance |
CN119853031A (en) * | 2025-03-21 | 2025-04-18 | 广东电网有限责任公司 | Topology identification method and device for low-voltage distribution network, terminal equipment and storage medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104239342A (en) * | 2013-06-20 | 2014-12-24 | 国家电网公司 | Establishment method of distribution network topology model |
-
2015
- 2015-12-30 CN CN201511029405.9A patent/CN105449676B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104239342A (en) * | 2013-06-20 | 2014-12-24 | 国家电网公司 | Establishment method of distribution network topology model |
Non-Patent Citations (1)
Title |
---|
"基于区域故障树开关合并的配电网可靠性评估";陈祝峰等;《电力系统及其自动化学报》;20150630;第27卷(第6期);第1-7页 * |
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