CN105527541B - A method of judgement distribution line failure tripping - Google Patents
A method of judgement distribution line failure tripping Download PDFInfo
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Abstract
Description
技术领域technical field
本发明属于配电网线路运行维护领域，尤其涉及一种判定配电线路故障跳闸的方法。The invention belongs to the field of operation and maintenance of distribution network lines, and in particular relates to a method for judging fault tripping of distribution lines.
背景技术Background technique
随着国家电网公司“大检修”管理体系及抓“两头薄弱环节”文件精神的实施，省电力公司要求电网运检部门对全省所辖电网生产情况及低县公司生产情况进行全盘掌控，更加精准化、扁平化、精益化地开展生产运维工作；但是，在实际工作中，各电力公司对所辖电网范围内的全部线路跳闸情况掌控不全。With the implementation of the "overhaul" management system of the State Grid Corporation and the implementation of the document spirit of grasping the "weak links at both ends", the provincial power company requires the power grid inspection department to fully control the production situation of the power grid under the jurisdiction of the province and the production situation of low-county companies, and more Carry out production operation and maintenance work in a precise, flat, and lean manner; however, in actual work, each power company has insufficient control over the tripping of all lines within the scope of the power grid under its jurisdiction.
由于调控分级管理的原因，各级调控中心一般情况下只是向运检部门反映本级调控中心所掌握的线路跳闸重合不成功的情况，省公司基本难以掌握地市及县公司线路的全部跳闸情况，特别是全省的配电线路跳闸情况基本不清楚，也缺乏有效的技术手段，无法针对性开展线路跳闸整治工作来有效降低线路跳闸率。Due to the hierarchical management of regulation and control, the control centers at all levels generally only report to the transportation inspection department the failure of line trips and coincidences that the control centers at the same level have mastered. , In particular, the province's distribution line tripping situation is basically unclear, and there is a lack of effective technical means, so it is impossible to carry out targeted line tripping rectification work to effectively reduce the line tripping rate.
综上所述，为了实现对配电网生产情况进行全盘掌控，更加精准化、扁平化、精益化地开展生产运维工作，非常迫切地需要研究一种判定配电线路故障跳闸的方法，使其能够有针对性的辅助开展配电网生产运维工作。To sum up, in order to realize the overall control of the production situation of the distribution network and carry out the production operation and maintenance work in a more precise, flat and lean manner, it is very urgent to study a method for judging the fault tripping of the distribution line, so that It can assist in the production, operation and maintenance of the distribution network in a targeted manner.
当前，市面上的一些涉及电力行业业务系统研发与实施的厂商，也对线路跳闸进行了一些方法上的研究，但目前也未见成熟或公开的明确方法，因此，需要研究开发一种配电线路跳闸的计算方法，使其能够满足一般故障跳闸判定、传动试验判定、试送电跳闸判定以及备用线路跳闸判定这几类线路跳闸的需求；而且需要计算过程中，占用系统资源少，对CPU及内存要求低，且支持自动及手动计算的特点。At present, some manufacturers on the market involved in the research and development and implementation of business systems in the power industry have also conducted some methodological research on line tripping, but there is no mature or open clear method at present. Therefore, it is necessary to research and develop a power distribution system. The calculation method of line trip enables it to meet the needs of general fault trip judgment, transmission test judgment, trial power trip judgment and backup line trip judgment; And low memory requirements, and supports automatic and manual calculation features.
发明内容Contents of the invention
本发明的主要目的在于，提供一种判定配电线路故障跳闸的方法，以满足准确判断出线路跳闸种类的需求，达到判定及时准确的效果，解决配电网线路跳闸情况难以及时掌控的问题。The main purpose of the present invention is to provide a method for judging the fault tripping of distribution lines to meet the needs of accurately judging the type of line tripping, achieve the effect of timely and accurate judgment, and solve the problem that it is difficult to control the tripping situation of distribution network lines in time.
为了解决上述问题，本发明提供了一种判定配电线路故障跳闸的方法，该方法包括以下步骤：In order to solve the above problems, the present invention provides a method for determining fault tripping of distribution lines, the method comprising the following steps:
1）将配电线路故障跳闸分为一般故障跳闸、传动试验跳闸、试送电跳闸以及备用线路跳闸四类；1) Divide distribution line fault trips into four categories: general fault trips, transmission test trips, test power transmission trips, and backup line trips;
所述一般故障跳闸又分为重合闸成功跳闸和重合闸不成功跳闸两类；The general fault tripping is divided into two types: reclosing successful tripping and reclosing unsuccessful tripping;
所述传动试验跳闸指该配电线路在进行传动试验操作引起的开关与保护动作产生的跳闸；The transmission test trip refers to the trip generated by the switch and protection action caused by the transmission test operation of the distribution line;
所述试送电跳闸指该配电线路在进行试送电操作引起的开关与保护动作产生的跳闸；The test power transmission trip refers to the trip generated by the switch and protection action caused by the test power transmission operation of the distribution line;
所述备用线路跳闸指备用线路切换引起的开关与保护动作产生的跳闸；The backup line trip refers to the trip caused by the switching of the backup line and the protection action;
2）开关与保护动作信号来源于配电线路上的开关设备的“分”、“合”信号以及保护动作状态信号；获取配电线路所关联的开关遥信信号、保护遥信信号以及线路的电流遥测数据，进行计算并判定，最后得出跳闸的种类结果，判定过程如下:2) The switch and protection action signals come from the "open" and "close" signals of the switch equipment on the distribution line and the protection action status signal; obtain the switch remote signal signal, protection remote signal signal and line signal associated with the distribution line The current telemetry data is calculated and judged, and finally the type of tripping is obtained. The judgment process is as follows:
a)判定是否为一般故障跳闸：在某个时间点上存在“分闸”的开关位置数据，并且在该时间点的1分钟内，存在对应的保护动作数据即线路上任何一个保护动作测点的数据，则判定该线路为一般故障跳闸，并根据重合闸判定结果，区分为重合闸成功跳闸以及重合闸不成功跳闸；a) Determine whether it is a general fault trip: at a certain point of time, there is switch position data of "opening", and within 1 minute of this point of time, there is corresponding protection action data, that is, any protection action measuring point on the line data, it is judged that the line is a general fault trip, and according to the reclosing judgment result, it is divided into reclosing successful tripping and reclosing unsuccessful tripping;
b)判定是否为传动试验跳闸：传动试验跳闸判断是在一般故障跳闸判断的基础上，判断该线路在此之前是否连续两个点的电流值小于阀值，同时在此之前的15分钟内存在“合闸”数据且最后状态为“合闸”，如果成立则判定为传动试验跳闸；或者该线路在此之前两个点的电流值大于阀值，以该点为中心，前后两个点的电流是否小于阀值，如果成立则判定为传动试验跳闸；或者如果该线路存在该时间点的检修票，也判定为传动试验跳闸；b) Judging whether it is a transmission test trip: the judgment of the transmission test trip is based on the judgment of the general fault trip, and it is judged whether the current value of the line at two consecutive points before this is less than the threshold value, and at the same time there is a fault within 15 minutes before that. "Close" data and the final state is "Close", if it is established, it will be judged as a transmission test trip; or the current value of the two points before this line is greater than the threshold, with this point as the center, the two points before and after Whether the current is less than the threshold value, if it is true, it will be judged as a transmission test trip; or if the line has a maintenance ticket at this time point, it will also be judged as a transmission test trip;
c)判定是否为试送电跳闸：试送电跳闸判断是在传动试验跳闸判断的基础上，分析在此之前5秒内存在“合闸”数据，并且开关最后状态为“合闸”，如果满足则判定为试送电跳闸；c) Judging whether it is a test power transmission trip: the judgment of the test power transmission trip is based on the judgment of the transmission test trip, and it is analyzed that there is "closing" data within 5 seconds before that, and the final state of the switch is "closing", if If it is met, it is judged as a test power trip;
d)判断是否为备用线路跳闸：d) Judging whether it is a backup line trip:
备用线路跳闸判断是在传动试验跳闸判断的基础上，判断在此之前2天内，电流值是否一直为小于某个设置的阀值，且前一天都为合的状态，如果满足则判定为备用线路跳闸。The tripping judgment of the backup line is based on the tripping judgment of the transmission test. It is judged whether the current value has been less than a certain set threshold value in the previous 2 days, and it was in the state of closing the previous day. If it is satisfied, it is judged as the backup line. trip.
优选的，所述重合闸判定的步骤为，当30秒内开关信号中既有包含SOE又有不包含SOE的数据，取最后一个不为SOE的点的开关状态，当不符合上述情况，取最后一个点的开关状态；若开关后第一个电流值是大于阀值则重合闸成功，则判定为重合闸成功跳闸；重合后的电流，如果小于跳闸前电流的70%，则判定为重合闸不成功跳闸。Preferably, the step of judging the reclosing is as follows: when the switching signal contains both SOE and data not containing SOE within 30 seconds, take the switch state of the last point that is not SOE; when the above situation is not met, take The switch state of the last point; if the first current value after the switch is greater than the threshold value, then the reclosing is successful, and it is judged as a successful reclosing trip; if the current after reclosing is less than 70% of the current before tripping, it is judged as reclosing The brake fails to trip.
优选的，该方法还包括计算线路跳闸时长步骤，Preferably, the method also includes the step of calculating the line trip duration,
1)正常计算：1) Normal calculation:
若重合闸成功，则恢复时长=重合闸时间-跳闸发生时间；If the reclosing is successful, the recovery time = reclosing time - tripping time;
若重合闸未成功，则按以下几类规则进行计算：If the reclosing is not successful, it will be calculated according to the following types of rules:
A．跳闸后最近的一个点电流恢复后，取最近一个开关合为恢复时间-跳闸发生时间=恢复时长；A． After the current recovers at the nearest point after tripping, take the nearest switch as the recovery time - trip occurrence time = recovery time;
B.计算15天内第一个电流恢复的时间，取第一个电流恢复时间前最近的开关合时间，则该时间-跳闸发生时间=恢复时长；B. Calculate the first current recovery time within 15 days, and take the latest switch closing time before the first current recovery time, then this time - trip occurrence time = recovery time;
C.若没有开关合时间,则第一个电流恢复时间-跳闸发生时间=恢复时长；C. If there is no switch closing time, then the first current recovery time - trip occurrence time = recovery time;
2)若重合闸未成功且恢复时长小于30秒：2) If reclosing is unsuccessful and the recovery time is less than 30 seconds:
恢复时长=重合闸时间-跳闸发生时间；Recovery time = reclosing time - tripping time;
3)若重合闸成功且恢复时长很长，则按以下几类规则进行计算：3) If the reclosing is successful and the recovery time is very long, the following rules are used for calculation:
A.跳闸后最近的一个点电流恢复后，则取最近一个开关合为恢复时间-跳闸发生时间=恢复时长；A. After the current recovers at the nearest point after tripping, take the nearest switch as the recovery time - trip occurrence time = recovery time;
B．计算15天内第一个电流恢复的时间，取第一个电流恢复时间前最近的开关合时间，则该时间-跳闸发生时间=恢复时长；B． Calculate the first current recovery time within 15 days, and take the latest switch closing time before the first current recovery time, then this time - trip occurrence time = recovery time;
C．若没有开关合时间,则第一个电流恢复时间-跳闸发生时间=恢复时长。C． If there is no switch closing time, then the first current recovery time - trip occurrence time = recovery time.
上述方法提供了一种判定配电线路故障跳闸的方法，通过配电线路所关联的开关遥信信号、保护动作遥信信号以及线路的电流遥测数据进行计算并做跳闸的综合判定，以便于对配电网线路跳闸情况及时掌控，能够有针对性的辅助开展配电网生产运维工作，从而进一步提高配电网线路可靠性。The above method provides a method for judging the fault tripping of the distribution line. The switch remote signaling signal associated with the distribution line, the protection action remote signaling signal and the current telemetry data of the line are used to calculate and make a comprehensive judgment on tripping, so as to facilitate the Timely control of distribution network line tripping can assist in the production, operation and maintenance of distribution network in a targeted manner, thereby further improving the reliability of distribution network lines.
附图说明Description of drawings
图1是本发明所述的配电线路故障跳闸种类图；Fig. 1 is a kind diagram of distribution line fault tripping according to the present invention;
图2是本发明所述的判定配电线路故障跳闸方法的流程图。Fig. 2 is a flow chart of the method for judging distribution line fault tripping according to the present invention.
具体实施方式Detailed ways
下面结合附图和实施实例对本发明的具体实施方式作进一步详细描述。以下实施实例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. The following implementation examples are used to illustrate the present invention, but are not used to limit the scope of the present invention.
图1所示为本发明所述的配电线路故障跳闸种类图，图2是本发明所述的判定配电线路故障跳闸方法的流程图，代表本发明所涉及的配电线路故障跳闸方法的优选实施实例。根据该实施实例，包括一般故障跳闸、传动试验跳闸、试送电跳闸以及备用线路跳闸判定四部分，通过以下步骤进行实施。Fig. 1 shows the type figure of distribution line fault tripping according to the present invention, and Fig. 2 is a flowchart of the method for judging distribution line fault tripping according to the present invention, representing the distribution line fault tripping method involved in the present invention Preferred implementation examples. According to this implementation example, it includes four parts: general fault tripping, transmission test tripping, test power transmission tripping and standby line tripping judgment, which are implemented through the following steps.
步骤1：判定一般故障跳闸：Step 1: Determine general fault tripping:
在某个时间点上存在“分闸”的开关位置（分合）数据，并且在该时间点的1分钟内，存在对应的保护动作数据（线路上任何一个保护动作测点的数据），即判为该线路跳闸。At a certain time point, there is switch position (opening and closing) data of "opening", and within 1 minute at this time point, there is corresponding protection action data (data of any protection action measuring point on the line), that is The line is judged to be tripped.
步骤2：判断是否为传动试验跳闸：Step 2: Determine whether it is a transmission test trip:
满足下面任一条件，则判断为传动试验跳闸。If any of the following conditions is met, it is judged as a transmission test trip.
2.1、判断跳闸时如果前2个点的电流有都小于阀值(主变阀值为2，线路阀值为1),则判断为传动试验跳闸；2.1. When judging the trip, if the current of the first two points is less than the threshold value (the threshold value of the main transformer is 2, and the threshold value of the line is 1), it is judged as a transmission test trip;
2.2、判断跳闸时如果前2个点的电流有一个大于阀值(主变阀值为2，线路阀值为1)，则再判断以这个点为中心的前后两个点的电流是否小于阀值.小于阀值就是传动试验跳闸，否则不是；2.2. When judging the trip, if one of the currents of the first two points is greater than the threshold value (the threshold value of the main transformer is 2, and the threshold value of the line is 1), then judge whether the current of the two points before and after this point as the center is less than the threshold value. Value. If it is less than the threshold value, the transmission test trips, otherwise it is not;
2.3、判断前/后一个小时内是否发生2次以上跳闸，并且此期间电流值小于3A，则判定为传动试验跳闸；2.3. Determine whether there are more than 2 trips within one hour before/after, and the current value during this period is less than 3A, then it is judged as a transmission test trip;
2.4、判断该线路/主变是否存在该时间点的检修票.如果有检修票，则判定为传动试验跳闸。2.4. Determine whether the line/main transformer has an inspection ticket at this time point. If there is an inspection ticket, it is judged as a transmission test trip.
步骤3：计算是否为试送电跳闸：Step 3: Calculate whether it is a trial power trip:
在传动试验的基础上计算，传动试验中5秒内分合闸,最终为合闸的状态.且前五秒内有开关合Calculated on the basis of the transmission test, the switch is opened and closed within 5 seconds in the transmission test, and finally it is in the closed state. And there is a switch closed within the first five seconds
步骤4：计算是否为备用线路跳闸：Step 4: Calculate if the alternate line tripped:
传动试验中，事故跳闸前2天内，开关电流一直为小于阀值1(最大值小于1)，且前一天都为合的状态（没有断开的状态）视为备用线路跳闸。In the transmission test, within 2 days before the accident trip, the switch current has been less than the threshold value 1 (the maximum value is less than 1), and the state of being closed (not disconnected) the previous day is regarded as the backup line trip.
步骤5：计算线路跳闸时长：Step 5: Calculate the line trip duration:
1)正常计算1) Normal calculation
若重合闸成功，则恢复时长=重合闸时间-跳闸发生时间。If the reclosing is successful, the recovery time = reclosing time - tripping time.
若重合闸未成功，则按以下几类规则进行计算：If the reclosing is not successful, it will be calculated according to the following types of rules:
A．跳闸后最近的一个点电流恢复后(1天内)，取最近一个开关合为恢复时间-跳闸发生时间=恢复时长。A． After the current recovers at the nearest point after the trip (within 1 day), the recovery time of the nearest switch is taken as the time when the trip occurs = the recovery time.
B.计算15天内第一个电流恢复的时间，取第一个电流恢复时间前最近的开关合时间，则该时间-跳闸发生时间=恢复时长。B. Calculate the first current recovery time within 15 days, and take the latest switch closing time before the first current recovery time, then this time - trip occurrence time = recovery time.
C.若没有开关合时间,则第一个电流恢复时间-跳闸发生时间=恢复时长。C. If there is no switch closing time, then the first current recovery time - trip occurrence time = recovery time.
2)若重合闸未成功且恢复时长小于30秒2) If reclosing is unsuccessful and the recovery time is less than 30 seconds
恢复时长=重合闸时间-跳闸发生时间。Recovery time = reclosing time - tripping time.
3)若重合闸成功且恢复时长很长，则按以下几类规则进行计算：3) If the reclosing is successful and the recovery time is very long, the following rules are used for calculation:
A.跳闸后最近的一个点电流恢复后(1天内)，则取最近一个开关合为恢复时间-跳闸发生时间=恢复时长A. After the current recovers at the nearest point after tripping (within 1 day), take the nearest switch as the recovery time - trip occurrence time = recovery time
B．计算15天内第一个电流恢复的时间，取第一个电流恢复时间前最近的开关合时间，则该时间-跳闸发生时间=恢复时长。B． Calculate the first current recovery time within 15 days, and take the latest switch closing time before the first current recovery time, then this time - trip occurrence time = recovery time.
C．若没有开关合时间,则第一个电流恢复时间-跳闸发生时间=恢复时长。C． If there is no switch closing time, then the first current recovery time - trip occurrence time = recovery time.
至此，本方法即实施完成，以上所述仅是本发明的一种优选实施方法，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。So far, the method has been implemented. The above is only a preferred implementation method of the present invention. It should be pointed out that for those of ordinary skill in the art, they can also do Several improvements and modifications are made, and these improvements and modifications should also be regarded as the protection scope of the present invention.
最后应说明的是：以上实施实例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施实例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施实例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施实例技术方案的精神和范围。Finally, it should be noted that: the above implementation examples are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing implementation examples, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing implementation examples, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various implementation examples of the present invention.
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| CN107202923A (en) * | 2017-05-19 | 2017-09-26 | 国网江西省电力公司电力科学研究院 | A kind of method of automatic identification distribution line transmission test tripping operation |
| CN107479070B (en) * | 2017-07-28 | 2019-12-20 | 北京空间飞行器总体设计部 | Automatic discrimination method for on-orbit power supply state of satellite |
| CN107942195A (en) * | 2017-11-17 | 2018-04-20 | 国网浙江省电力公司 | Controller switching equipment monitoring method |
| CN108667004A (en) * | 2018-04-03 | 2018-10-16 | 国家电网公司 | Fault study and judgment method and device for distribution lines |
| CN109089361B (en) * | 2018-08-31 | 2023-06-23 | 江苏新广联光电股份有限公司 | Emergency lamp control method, device and system |
| CN109490707A (en) * | 2018-11-13 | 2019-03-19 | 国网江苏省电力有限公司南通供电分公司 | The automatic analysis method of electric network fault tripping based on multidimensional multi-source grid operation data |
| CN112433127B (en) * | 2020-11-13 | 2023-05-12 | 珠海许继电气有限公司 | Fault type identification method and device based on intelligent fusion terminal of transformer area |
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