CN105488742A - Method for filtering misreported signals of fault indicator - Google Patents
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Abstract
本发明涉及一种故障指示器误报信号的过滤方法，该方法包括：配电自动化主站系统通过配电网拓扑模型，建立配电网一次设备的内存拓扑；当故障指示器上报翻牌信号时，配电主站系统根据设置的时间延迟等待，对抖动信号进行过滤；配电自动化主站结合故障信号时的故障电流、负荷电流，对误发遥信信号进行过滤；配电主站系统根据故障前后的对地电场的变化来判断故障为瞬时故障或永久故障；配电主站系统通过拓扑关系，结合前后故障指示器的信号，分析故指信号是否误报或漏报。本发明所提出的故障指示器误报信号过滤方法，能防止故指抖动、误发频繁的触发故指研判，提高故指研判的准确率，增加在故障抢修过程中的高效性与智能性，大大提高配抢工作效率。
The invention relates to a method for filtering false alarm signals of a fault indicator. The method comprises: the distribution automation master station system establishes the memory topology of the primary equipment of the distribution network through the topology model of the distribution network; when the fault indicator reports a flop signal When the power distribution master station system waits according to the set time delay, it filters the jitter signal; the distribution automation master station combines the fault current and load current when the fault signal occurs, and filters the false remote signaling signal; the power distribution master station system According to the change of the ground electric field before and after the fault, it is judged whether the fault is an instantaneous fault or a permanent fault; the power distribution master station system uses the topological relationship and combines the signals of the fault indicator before and after the fault to analyze whether the signal is misreported or missed. The fault indicator false alarm signal filtering method proposed by the present invention can prevent faulty fingers from jittering and frequent false triggers to trigger faulty finger research and judgment, improve the accuracy of faulty finger research and judgment, and increase the efficiency and intelligence in the fault repair process. Greatly improve the work efficiency of distribution and grabbing.
Description
技术领域 technical field
本发明涉及电力系统配电自动化领域，特别是一种故障指示器误报信号的过滤方法。 The invention relates to the field of power system distribution automation, in particular to a method for filtering false alarm signals of fault indicators.
背景技术 Background technique
随着电力系统配网系统建设及其实用化功能的不断推进，故障指示器作为二遥终端已大规模的部署安装。故障指示器的数据接入及故障定位功能有效地缩短了抢修人员故障查找时间，提高了现场抢修效率。故障指示器数据接入推进了多元数据的融合，解决配网“盲调”问题，即可实时监测配电网络的状态和故障，自动确定故障区段，并查找出故障点，从而能及时发现并排除线路故障，缩短故障修复时间，节省了大量的人力、物力。 With the continuous advancement of the construction of the power system distribution network system and its practical functions, fault indicators have been deployed and installed on a large scale as the second remote terminal. The data access and fault location functions of the fault indicator effectively shorten the time for repair personnel to find faults and improve the efficiency of on-site repair. The data access of the fault indicator promotes the fusion of multiple data and solves the problem of "blind adjustment" of the distribution network. It can monitor the status and faults of the distribution network in real time, automatically determine the fault section, and find out the fault point, so that it can be found in time And eliminate line faults, shorten fault repair time, and save a lot of manpower and material resources.
故障指示器主要部署在架空线路上，常年风吹雨淋，加上有的运行时间较长，会出现故指本身性能及电池问题，造成故指信号误报、抖动、漏报等。这样，故指信号的不准确，必会造成故障研判的准确性，从而影响抢修的工作效率。因此针对配电网故障亟需一种有效的故障指示器误报信号的过滤方法，充分综合故指上送的遥信遥测量，并利用故障指示器间的拓扑连接关系进行分析，对遥信动作信号进行预处理，过滤误报、抖动信号。从而提高故障研判的准确度，增加在故障抢修过程中的高效性与智能性，提高配抢工作效率。 Fault indicators are mainly deployed on overhead lines, which are exposed to wind and rain all year round. In addition, some of them run for a long time, and there will be problems with the performance of the fault indicator itself and the battery, resulting in false alarms, jitters, and false alarms of the fault indicators. In this way, the inaccuracy of the fingering signal will inevitably lead to the accuracy of fault research and judgment, thereby affecting the work efficiency of emergency repair. Therefore, there is an urgent need for an effective filtering method for false alarm signals of fault indicators for distribution network faults, which fully integrates the remote signaling and telemetry sent by fault indicators, and uses the topology connection relationship between fault indicators to analyze the remote signaling. Action signals are preprocessed to filter false positives and jitter signals. Thereby improving the accuracy of fault research and judgment, increasing the efficiency and intelligence in the fault repair process, and improving the efficiency of dispatching and rescue work.
发明内容 Contents of the invention
本发明的目的在于提供一种故障指示器误报信号的过滤方法，以克服现有技术中存在的缺陷。 The purpose of the present invention is to provide a method for filtering false alarm signals of a fault indicator, so as to overcome the defects in the prior art.
为实现上述目的，本发明的技术方案是：一种基于故障指示器误报信号的过滤方法，按照如下步骤实现： In order to achieve the above object, the technical solution of the present invention is: a kind of filtering method based on the false alarm signal of the fault indicator is realized according to the following steps:
步骤S1：配电自动化主站系统通过配电网拓扑模型，建立配电网一次设备的内存拓扑； Step S1: The distribution automation master station system establishes the memory topology of the primary equipment of the distribution network through the topology model of the distribution network;
步骤S2：当故障指示器上报翻牌信号时，所述配电主站系统根据预设时间进行延迟等待，且将在该预设时间内复归的故障指示信号判定为抖动信号，并对该抖动信号进行过滤； Step S2: When the fault indicator reports a flop signal, the power distribution master station system delays and waits according to the preset time, and judges the fault indication signal returned within the preset time as a jitter signal, and the jitter The signal is filtered;
步骤S3：所述配电自动化主站结合所述故障指示器上传所述故障指示信号时的故障电流以及负荷电流，对误发遥信信号进行过滤； Step S3: The distribution automation master station filters the falsely sent remote signaling signal in combination with the fault current and load current when the fault indicator uploads the fault indication signal;
步骤S4：所述配电自动化主站系统根据所述故障指示器上传故障指示信号的对地电场的变化，判断故障为瞬时故障或永久故障； Step S4: The distribution automation master station system judges that the fault is an instantaneous fault or a permanent fault according to the change of the ground electric field of the fault indication signal uploaded by the fault indicator;
步骤S5：所述配电自动化主站系统通过所述配电网拓扑模型中的拓扑关系，并结合所述故障指示器上报故障指示信号前后所述故障指示器发送的信号，判断该故障指示器信号是否误报或漏报； Step S5: The distribution automation master station system judges the fault indicator through the topological relationship in the distribution network topology model and in combination with the signals sent by the fault indicator before and after the fault indicator reports the fault indication signal Whether the signal is false positive or false positive;
步骤S6：所述配电自动化主站系统同时对多个故障指示器上传的故障指示信号进行预处理以及过滤分析。 Step S6: The distribution automation master station system simultaneously preprocesses and filters and analyzes the fault indication signals uploaded by multiple fault indicators.
在本发明一实施例中，在所述步骤S1中，所述配电网拓扑模型涵盖配电网系统的故障指示器，并描述了配电网系统中故障指示器之间的拓扑连接关系。 In an embodiment of the present invention, in the step S1, the distribution network topology model covers the fault indicators of the distribution network system, and describes the topological connection relationship between the fault indicators in the distribution network system.
在本发明一实施例中，在所述步骤S2中，所述配电自动化主站系统滤除所述抖动信号，不再进行研判。 In an embodiment of the present invention, in the step S2, the distribution automation master station system filters out the jitter signal, and does not conduct further research and judgment.
在本发明一实施例中，在所述步骤S3中，所述配电自动化主站系统通过判断收到所述故障指示器发送的遥信信号时故障电流以及负荷电流是否出现明显的突增，若出现突增，则对误发遥信信号进行过滤。 In an embodiment of the present invention, in the step S3, the distribution automation master station system judges whether there is an obvious sudden increase in the fault current and the load current when receiving the remote signaling signal sent by the fault indicator, If there is a sudden increase, the remote signaling signal sent by mistake is filtered.
在本发明一实施例中，在所述步骤S4中，所述配电自动化主站系统判断所述故障指示器上传故障指示信号前后的对地电场的是否存在明显的下降，并经一预设测试时间后，所述配电自动化主站系统对所述故障指示器的对地电场进行召回测试，根据对地电场是否回升，判断是瞬时故障或永久故障。 In an embodiment of the present invention, in the step S4, the distribution automation master station system judges whether there is a significant drop in the electric field to the ground before and after the fault indicator uploads the fault indication signal, and performs a preset After the test time, the distribution automation master station system conducts a recall test on the ground-to-ground electric field of the fault indicator, and judges whether it is an instantaneous fault or a permanent fault according to whether the ground-to-ground electric field has picked up.
在本发明一实施例中，在所述步骤S5中，所述配电自动化主站结合所述故障指示器上传的遥信信号，判断该故障指示器信号是否误报或漏报。 In an embodiment of the present invention, in the step S5, the distribution automation master station combines the remote signaling signal uploaded by the fault indicator to judge whether the fault indicator signal is misreported or missed.
在本发明一实施例中，在所述步骤S6中，所述配电自动化主站系统支持多线程，且通过多线程对计算方法进行调用，对多个故障指示器上传的故障指示信号进行同时处理。 In an embodiment of the present invention, in the step S6, the distribution automation master station system supports multi-threading, and calls the calculation method through multi-threading, and simultaneously performs fault indication signals uploaded by multiple fault indicators deal with.
相较于现有技术，本发明具有以下有益效果：本发明所提出的一种故障指示器误报信号的过滤方法，可以利用已经建好的配电自动化主站系统的配电网拓扑模型，不需要重复建模，可以大大降低投资和维护成本。该方法将故障指示器的遥信信号结合遥测量进行分析，过滤了误报的信号，提高了故障研判的准确度，从而增加了故障抢修过程中的高效性与智能性，提高配抢工作效率。支持多线程调用，可以同时处理多个故障指示器的过滤判断处理。通过实际应用表明，该方法正确有效，避免了因误报信号而研判出大量错误的故障结果，提高了故障研判的准确性，可以大大提高配网调度及配抢工作效率。 Compared with the prior art, the present invention has the following beneficial effects: a method for filtering false alarm signals of fault indicators proposed by the present invention can utilize the distribution network topology model of the distribution automation master station system that has been built, There is no need for repeated modeling, which can greatly reduce investment and maintenance costs. This method analyzes the remote signaling signal of the fault indicator combined with the remote measurement, filters out false positive signals, and improves the accuracy of fault research and judgment, thereby increasing the efficiency and intelligence in the fault repair process and improving the efficiency of dispatching and rescue work . It supports multi-threaded calls, and can process the filtering and judging processing of multiple fault indicators at the same time. The practical application shows that this method is correct and effective, avoiding a large number of erroneous fault results due to false alarm signals, improving the accuracy of fault research and judgment, and greatly improving the efficiency of distribution network scheduling and distribution rush.
附图说明 Description of drawings
图1为本发明中一种故障指示器误报信号的过滤方法的流程图。 FIG. 1 is a flow chart of a method for filtering false alarm signals of a fault indicator in the present invention.
具体实施方式 detailed description
下面结合附图，对本发明的技术方案进行具体说明。 The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.
针对配电网中故障指示器的信号误报、抖动等影响故障研判的问题，本发明提出了一种基于故障指示器误报信号的过滤方法，实现在收到故指遥信信号时，配电自动化主站系统可以主动分析信号的正确性，对信号进行预处理，过滤误报、抖动的信号，按照如下步骤实现： Aiming at the problem that the signal false report and jitter of the fault indicator in the distribution network affect the fault research and judgment, the present invention proposes a filtering method based on the false signal of the fault indicator, so that when the remote signal of the fault indicator is received, the distribution The electrical automation master station system can actively analyze the correctness of the signal, preprocess the signal, filter false positives and jitter signals, and implement it according to the following steps:
步骤S1：配电自动化主站系统通过配电网拓扑模型，建立配电网一次设备的内存拓扑； Step S1: The distribution automation master station system establishes the memory topology of the primary equipment of the distribution network through the topology model of the distribution network;
步骤S2：当故障指示器上报翻牌信号时，配电主站系统根据预设时间进行延迟等待，且将在该预设时间（一般2分钟）内复归的故障指示器翻牌信号判定为抖动信号，并对该抖动信号进行过滤； Step S2: When the fault indicator reports the flop signal, the power distribution master station system waits for a delay according to the preset time, and judges the flop signal of the fault indicator that returns within the preset time (generally 2 minutes) as jitter signal, and filter the jitter signal;
步骤S3：配电自动化主站结合故障指示器上传故障指示信号时的故障电流以及负荷电流，对误发遥信信号进行过滤； Step S3: The distribution automation master station filters the falsely sent remote signal by combining the fault current and the load current when the fault indicator uploads the fault indication signal;
步骤S4：配电自动化主站系统根据故障指示器上传故障指示信号的对地电场的变化，判断故障为瞬时故障或永久故障； Step S4: The distribution automation master station system determines whether the fault is an instantaneous fault or a permanent fault according to the change of the electric field to the ground of the fault indication signal uploaded by the fault indicator;
步骤S5：配电自动化主站系统通过配电网拓扑模型中的拓扑关系，并结合故障指示器上报故障指示信号前后故障指示器发送的信号，判断该故障指示器信号是否误报或漏报； Step S5: The distribution automation master station system judges whether the fault indicator signal is misreported or missed by using the topology relationship in the distribution network topology model and combining the signals sent by the fault indicator before and after the fault indicator reports the fault indication signal;
步骤S6：配电自动化主站系统同时对多个故障指示器上传的故障指示信号进行预处理以及过滤分析。 Step S6: The distribution automation master station system simultaneously performs preprocessing and filtering analysis on the fault indication signals uploaded by multiple fault indicators.
进一步的，在本实施例中，在步骤S1中，配电网拓扑模型涵盖配电网系统的故障指示器，并描述了配电网系统中故障指示器之间的拓扑连接关系。在本实施例中，所创建的模型需符合以下几个要点：涵盖配电网系统的故障指示器并正确描述这些故指之间的拓扑连接关系。 Further, in this embodiment, in step S1, the distribution network topology model covers the fault indicators of the distribution network system, and describes the topological connection relationship between the fault indicators in the distribution network system. In this embodiment, the created model needs to meet the following points: cover the fault indicators of the distribution network system and correctly describe the topological connection relationship between these fault indicators.
进一步的，在本实施例中，在步骤S2中，配电自动化主站系统滤除抖动信号，不再进行研判。在本实施例中，收到故指动作的信号后，进行延迟处理，在延迟等待时间内配电主站系统若有收到复归信号，则判定为抖动信号，滤除该故指信号，不再进行研判。 Further, in this embodiment, in step S2, the distribution automation master station system filters out the jitter signal, and does not conduct research and judgment any more. In this embodiment, after receiving the signal of the false finger action, delay processing is carried out. If the power distribution master station system receives the reset signal within the delay waiting time, it is judged as a jitter signal, and the false finger signal is filtered out. Then conduct research and judgment.
进一步的，在本实施例中，在步骤S3中，配电自动化主站系统通过判断收到故障指示器发送的遥信信号时故障电流以及负荷电流是否出现明显的突增，若出现突增，则对误发遥信信号进行过滤。在本实施例中，故障发生时，故指除了遥信动作，故障电流或负荷电流也应有出现明显的突增，而遥信误触发时，不会有此现象，根据电流变化校验出遥信信号的正确性。 Further, in this embodiment, in step S3, the distribution automation master station system judges whether there is an obvious sudden increase in the fault current and the load current when receiving the remote signaling signal sent by the fault indicator, and if there is a sudden increase, Then, the false remote signaling signal is filtered. In this embodiment, when a fault occurs, it means that in addition to the remote signaling action, the fault current or load current should also have an obvious sudden increase, and when the remote signaling is triggered by mistake, this phenomenon will not occur. The correctness of the remote signaling signal.
进一步的，在本实施例中，在步骤S4中，配电自动化主站系统判断故障指示器上传故障指示信号前后的对地电场的是否存在明显的下降，并经一预设测试时间后，配电自动化主站系统对故障指示器的对地电场进行召回测试，根据对地电场是否回升，判断是瞬时故障或永久故障。在本实施例中，配电主站系统根据故障前后的对地电场的变化来判断故障为瞬时故障或永久故障。故障发生时，对地电场会有明显的下降，2分钟后配电主站系统对故指的对地电场进行召测，根据对地电场是否回升，来判断是瞬时故障或永久故障。 Further, in this embodiment, in step S4, the distribution automation master station system judges whether there is a significant drop in the ground electric field before and after the fault indicator uploads the fault indication signal, and after a preset test time, the distribution The electrical automation master station system conducts a recall test on the ground-to-ground electric field of the fault indicator, and judges whether it is an instantaneous fault or a permanent fault according to whether the ground-to-ground electric field rises. In this embodiment, the power distribution master station system judges whether the fault is an instantaneous fault or a permanent fault according to the change of the ground electric field before and after the fault. When a fault occurs, the ground-to-ground electric field will drop significantly. After 2 minutes, the power distribution master station system will test the ground-to-ground electric field. According to whether the ground-to-ground electric field rises, it is judged whether it is an instantaneous fault or a permanent fault.
进一步的，在本实施例中，在步骤S5中，配电自动化主站结合故障指示器上传的遥信信号，判断该故障指示器信号是否误报或漏报。在本实施例中，配电主站系统通过拓扑连接关系，结合前后故障指示器的遥信信号，分析该故指信号是否误报或漏报。 Further, in this embodiment, in step S5, the distribution automation master station judges whether the fault indicator signal is falsely reported or missed in combination with the remote signaling signal uploaded by the fault indicator. In this embodiment, the power distribution master station system analyzes whether the fault indicator signal is misreported or missed by combining the topological connection relationship and the remote signaling signals of the front and rear fault indicators.
进一步的，在本实施例中，在步骤S6中，配电自动化主站系统支持多线程，且通过多线程对计算方法进行调用，对多个故障指示器上传的故障指示信号进行同时处理。在本实施例中，配电自动化主站系统必须支持多线程，且通过多线程对计算方法进行调用，才能支持多个故指的信号同时处理。 Further, in this embodiment, in step S6, the distribution automation master station system supports multi-threading, and calls the calculation method through multi-threading, and simultaneously processes the fault indication signals uploaded by multiple fault indicators. In this embodiment, the distribution automation master station system must support multi-threading, and call the calculation method through multi-threading, so as to support simultaneous processing of multiple signals.
以上是本发明的较佳实施例，凡依本发明技术方案所作的改变，所产生的功能作用未超出本发明技术方案的范围时，均属于本发明的保护范围。 The above are the preferred embodiments of the present invention, and all changes made according to the technical solution of the present invention, when the functional effect produced does not exceed the scope of the technical solution of the present invention, all belong to the protection scope of the present invention.
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