CN106154038A - A kind of for the cable system resistance value method of testing containing independent core point pair - Google Patents
A kind of for the cable system resistance value method of testing containing independent core point pair Download PDFInfo
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Abstract
该技术属于电阻值测试方法领域，具体涉及一种用于含有独立芯点对的电缆网电阻值测试方法。提高了后续测试中对电缆结构分析的准确性。步骤一：通过广度优先搜索算法确定电缆网中有至少一个独立芯点对，若有则进入步骤二，否则终止；步骤二：对步骤一中找到的独立芯点对间进行一次测试，得到该独立芯点对间的电阻值R，用R除以该独立芯点之间的导线长度L可得该电缆网中所用导线的线电阻率ρ；步骤三：假设电缆网中共有N根导线，通过步骤二中所得的导线电阻率ρ与每根导线的线长Ln，可得到单根导线的电阻值Rn，再利用节点电压法与芯点之间的连接关系计算整个电缆网中任意芯点对之间的电阻值。The technology belongs to the field of resistance value testing methods, and in particular relates to a resistance value testing method for a cable network containing independent core point pairs. Improved accuracy of cable structure analysis in follow-up tests. Step 1: Determine that there is at least one independent core point pair in the cable network through the breadth-first search algorithm, if there is, enter step 2, otherwise terminate; Step 2: conduct a test on the independent core point pairs found in step 1, and get the The resistance value R between independent core point pairs, divide R by the wire length L between the independent core points to obtain the line resistivity ρ of the wire used in the cable network; Step 3: Assume that there are N wires in the cable network, Through the wire resistivity ρ obtained in step 2 and the line length Ln of each wire, the resistance value Rn of a single wire can be obtained, and then any core point in the entire cable network can be calculated by using the node voltage method and the connection relationship between core points The resistance value between the pair.
Description
技术领域technical field
该技术属于电阻值测试方法领域，具体涉及一种用于含有独立芯点对的电缆网电阻值测试方法。The technology belongs to the field of resistance value testing methods, and in particular relates to a resistance value testing method for a cable network containing independent core point pairs.
背景技术Background technique
当前利用电缆网测试仪进行电缆测试时，需要提前得知被测电缆的导线电阻率，以用于计算被测电缆的标准电阻值。然而电缆厂家提供的电阻率数据与实际导线的电阻率往往不一致，从而影响计算结果。Currently, when using a cable network tester for cable testing, it is necessary to know the conductor resistivity of the cable under test in advance, so as to calculate the standard resistance value of the cable under test. However, the resistivity data provided by the cable manufacturer is often inconsistent with the resistivity of the actual wire, which affects the calculation results.
该文提出的用于电缆网测试的电阻率自适应方法，首先根据电缆配置文件对被测电缆的连接状态进行分析，找出符合测试条件的独立芯点，然后利用这些独立芯点间的实测阻值及配置文件中给定的线长和数量来计算指定线型的电阻率ρ，并将电阻率ρ用于后续的测试过程。The resistivity self-adaptive method for cable network testing proposed in this paper first analyzes the connection state of the tested cable according to the cable configuration file, finds out the independent core points that meet the test conditions, and then uses the actual measurement between these independent core points Calculate the resistivity ρ of the specified line type based on the resistance value and the length and number of lines given in the configuration file, and use the resistivity ρ for the subsequent testing process.
发明内容Contents of the invention
本发明的目的在于：提供一种用于含有独立芯点对的电缆网电阻值测试方法，用于在电缆网测试过程中，根据实际测试结果计算当前导线的电阻率，使得分析结果更加符合被测电缆网的实际状态。The object of the present invention is to provide a method for testing the resistance value of a cable network containing independent core point pairs, which is used to calculate the resistivity of the current wire according to the actual test results during the cable network test process, so that the analysis results are more in line with the tested results. Measure the actual state of the cable network.
本发明的技术方案如下：一种用于含有独立芯点对的电缆网电阻值测试方法，包括以下步骤：The technical scheme of the present invention is as follows: a method for testing the resistance value of a cable network containing independent core point pairs, comprising the following steps:
步骤一：整个电缆网使用同一规格的导线，通过广度优先搜索算法确定电缆网中有至少一个独立芯点对，若有则进入步骤二，否则终止；Step 1: The entire cable network uses wires of the same specification, and the breadth-first search algorithm is used to determine that there is at least one independent core point pair in the cable network. If there is, enter step 2, otherwise terminate;
步骤二：对步骤一中找到的独立芯点对间进行一次测试，得到该独立芯点对间的电阻值R，用R除以该独立芯点之间的导线长度L可得该电缆网中所用导线的线电阻率ρ；Step 2: Conduct a test on the independent core point pair found in step 1 to obtain the resistance value R between the independent core point pair, and divide R by the length L of the wire between the independent core points to obtain the cable network The line resistivity ρ of the wire used;
步骤三：假设电缆网中共有N根导线，通过步骤二中所得的导线电阻率ρ与每根导线的线长Ln，可得到单根导线的电阻值Rn，再利用节点电压法与芯点之间的连接关系计算整个电缆网中任意芯点对之间的电阻值。Step 3: Assuming that there are N wires in the cable network, the resistance value Rn of a single wire can be obtained through the wire resistivity ρ obtained in Step 2 and the length Ln of each wire, and then use the node voltage method and the relationship between core points Calculate the resistance value between any pair of core points in the entire cable network based on the connection relationship between them.
所述独立芯点对为两芯点间有导线直接相连，且芯点间电阻就是该两点间导线的电阻，而与其他芯点及其他导线电阻无关。The independent core point pair is directly connected by a wire between the two core points, and the resistance between the core points is the resistance of the wire between the two points, and has nothing to do with the resistance of other core points and other wires.
本发明的显著效果在于：根据独立芯点间的实测阻值来计算指定线型的电阻率，得到的电阻率数据更能反应电缆的实际情况，提高了后续测试中对电缆结构分析的准确性。The remarkable effect of the present invention lies in: the resistivity of the specified line type is calculated according to the measured resistance value between the independent core points, the obtained resistivity data can better reflect the actual situation of the cable, and the accuracy of the analysis of the cable structure in the follow-up test is improved .
具体实施方式detailed description
一种用于含有独立芯点对的电缆网电阻值测试方法，包括以下步骤：A method for testing the resistance value of a cable network containing independent core point pairs, comprising the following steps:
步骤一：整个电缆网使用同一规格的导线，通过广度优先搜索算法确定电缆网中有至少一个独立芯点对，若有则进入步骤二，否则终止；其中独立芯点对为两芯点间有导线直接相连，且芯点间电阻就是该两点间导线的电阻，而与其他芯点及其他导线电阻无关；Step 1: The entire cable network uses wires of the same specification, and the breadth-first search algorithm is used to determine that there is at least one independent core point pair in the cable network. The wires are directly connected, and the resistance between the core points is the resistance of the wire between the two points, and has nothing to do with the resistance of other core points and other wires;
步骤二：对步骤一中找到的独立芯点对间进行一次测试，得到该独立芯点对间的电阻值R，用R除以该独立芯点之间的导线长度L可得该电缆网中所用导线的线电阻率ρ；Step 2: Conduct a test on the independent core point pair found in step 1 to obtain the resistance value R between the independent core point pair, and divide R by the length L of the wire between the independent core points to obtain the cable network The line resistivity ρ of the wire used;
步骤三：假设电缆网中共有N根导线，通过步骤二中所得的导线电阻率ρ与每根导线的线长Ln，可得到单根导线的电阻值Rn，再利用节点电压法与芯点之间的连接关系计算整个电缆网中任意芯点对之间的电阻值。Step 3: Assuming that there are N wires in the cable network, the resistance value Rn of a single wire can be obtained through the wire resistivity ρ obtained in Step 2 and the length Ln of each wire, and then use the node voltage method and the relationship between core points Calculate the resistance value between any pair of core points in the entire cable network based on the connection relationship between them.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942187A (en) * | 2017-11-21 | 2018-04-20 | 北京宇航系统工程研究所 | A kind of cable system continuity test method based on constant-current source |
Citations (4)
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|---|---|---|---|---|
| CN101923115A (en) * | 2010-08-17 | 2010-12-22 | 攀枝花学院 | Method for measuring resistivity of material |
| CN102156230A (en) * | 2011-03-07 | 2011-08-17 | 上海出入境检验检疫局机电产品检测技术中心 | Temperature-increment testing capability verifying sample |
| CN103033720A (en) * | 2012-12-09 | 2013-04-10 | 太原理工大学 | Multi-core cable long distance distinguishing method |
| CN103293384A (en) * | 2013-05-09 | 2013-09-11 | 国家电网公司 | Online cable resistance tuning method for power distribution network |
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- 2015-03-30 CN CN201510144349.7A patent/CN106154038A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923115A (en) * | 2010-08-17 | 2010-12-22 | 攀枝花学院 | Method for measuring resistivity of material |
| CN102156230A (en) * | 2011-03-07 | 2011-08-17 | 上海出入境检验检疫局机电产品检测技术中心 | Temperature-increment testing capability verifying sample |
| CN103033720A (en) * | 2012-12-09 | 2013-04-10 | 太原理工大学 | Multi-core cable long distance distinguishing method |
| CN103293384A (en) * | 2013-05-09 | 2013-09-11 | 国家电网公司 | Online cable resistance tuning method for power distribution network |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107942187A (en) * | 2017-11-21 | 2018-04-20 | 北京宇航系统工程研究所 | A kind of cable system continuity test method based on constant-current source |
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