TWI626457B - Ship power distribution feeder insulation abnormal positioning system - Google Patents

Ship power distribution feeder insulation abnormal positioning system Download PDF

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Publication number
TWI626457B
TWI626457B TW106132919A TW106132919A TWI626457B TW I626457 B TWI626457 B TW I626457B TW 106132919 A TW106132919 A TW 106132919A TW 106132919 A TW106132919 A TW 106132919A TW I626457 B TWI626457 B TW I626457B
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TW
Taiwan
Prior art keywords
circuit breaker
detection line
feeder
branch
processor
Prior art date
Application number
TW106132919A
Other languages
Chinese (zh)
Other versions
TW201915502A (en
Inventor
Jun-Lian Su
ji-xiang Liao
zhao-jie Liu
Jin-Ting Yu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to TW106132919A priority Critical patent/TWI626457B/en
Application granted granted Critical
Publication of TWI626457B publication Critical patent/TWI626457B/en
Publication of TW201915502A publication Critical patent/TW201915502A/en

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Abstract

The invention relates to a ship electric power distribution feeder insulation abnormal positioning system. When a feeder insulation abnormality occurs in a ship power system, the creation of the invention can find out that the circuit breaker of the power supply system is disconnected without forming a circuit breaker. Insulation abnormality of the feeder line, so that the engineer can be repaired in the first time, not only saves manpower to find the time required for insulation abnormality, the load of each branch feeder can continue to maintain normal operation.

Description

Ship power distribution feeder insulation abnormal positioning system
The invention relates to a detection system, in particular to a ship power distribution feeder insulation abnormal positioning system.
Press, whether it is a ship power system or a land power system, once there is insulation abnormality in the power system (such as breakage, breakage, etc.), it is easy to cause human body electric shock. When the human body touches the charged body, the human body passes. The grounding phase directly forms a conductive loop with the line voltage; or, if other feeders also have insulation anomalies, the risk of short-circuiting is likely to occur between the two. Therefore, the single-phase grounding must be monitored, discovered and eliminated in time, especially for the ship's power system. Once an accident occurs, it will become an indelible disaster. It is necessary to strictly monitor whether the feeder is insulated or not. Referring to the second figure, the general ship power system is mainly used to electrically connect the feeder to the main feeder of the ship's power system through a grounding resistance detection unit. Once the insulation of the branch feeder is abnormal, pass R= In the relationship between V/I, the grounding resistance detecting unit detects a decrease in the resistance value (R). At this time, the grounding resistance detecting unit activates the alarm to alert the ship crew to perform maintenance. However, the inadequacy of this type of detection is that it can only judge whether the ship's power system has an insulation abnormality, and it is impossible to clearly indicate which branch feeder has an insulation abnormality. When the engineer performs the feeder maintenance, the circuit breakers installed on the different feeders must be sequentially turned off until the ground resistance detection unit displays that the resistance value (R) returns to normal, and the position of the insulation abnormality can be judged. This is not only time-consuming, but also because the disconnected feeders are disconnected, so that the load on each of the different feeders is likely to cause negative effects such as poor operation, and sometimes the motor or equipment trips occur, and the operating system is generated. The hazard of damage caused by all pauses. Accordingly, the creator of the present invention believes that there should be a detection system that correctly indicates the location of the abnormality when the feeder is insulated abnormally, so that the engineer can perform maintenance for the first time.
In view of the deficiencies of the prior art, the creator of the present invention proposes a solution for a ship power distribution feeder insulation abnormal positioning system, comprising: a grounding resistance detecting unit: the grounding resistance detecting unit has a main detection line, a first branch detection line, and a second branch detection line, the main detection line is electrically connected to the beginning of the main power line of the ship power system, and the first branch detection line can be powered Connected to the beginning of the first branch feeder of the ship power system, the second branch detection line is electrically connected to the beginning of the second branch feeder of the ship power system, and a first circuit breaker is provided in one of the main detection lines, the first A second circuit breaker is disposed in one of the sections of the differential detection line, and a third circuit breaker is disposed in one of the second branch detection lines. a processor: the processor is electrically connected to the grounding resistance detecting unit, the first circuit breaker, the second circuit breaker, and the third circuit breaker, respectively, when the grounding resistance detecting unit detects the ship When the resistance value of the power system is lower than a first preset value, the processor controls the first circuit breaker to form an open circuit, controls the second circuit breaker to form an open circuit, and controls the third circuit breaker to form a path. When the resistance value measured by the resistance detecting unit is higher than a second preset value, it is determined that the first branching feeder has an insulation abnormality, and if the resistance value measured by the grounding resistance detecting unit is still lower than the When the first preset value is reached, the processor controls the second circuit breaker to form a path, and the third circuit breaker forms an open circuit and then performs detection until it is determined that the differential feed line of the insulation abnormality occurs. An output: the output is electrically connected to the processor for outputting the judgment result of the processor. The invention mainly uses the processor to automatically control each circuit breaker to form a disconnection when the ship power system is insulated abnormally, so as to determine which branch feeders have insulation abnormalities, so that the engineer does not need to spend extra time. The test can be urgently repaired in the first time. At the same time, in the process of finding the insulation abnormality of the different feeders, the invention does not need to disconnect the circuit breakers on the different feeders, and can ensure that the fault is located in the normal divergence. The load on the feeder is maintained in normal operation to eliminate the negative effects of the detection methods described in the prior art.
The construction, features and embodiments of the present invention will be described with the aid of the drawings, and the reviewers will have a better understanding of the present invention. Referring to the first figure, the invention relates to a ship electric power distribution feeder insulation abnormal positioning system, comprising: a grounding resistance detecting unit (1): the grounding resistance detecting unit (1) mainly uses R=V /I relationship, when the feeder insulation abnormality occurs, the current will rise, the voltage will not change, and the resistance will drop, and the grounding resistance detecting unit (1) includes: a main detecting line (11), a first A divergence detection line (12) and a second divergence detection line (13). The main detection line (11) can be electrically connected to the beginning of the main power line (B1) of the ship power system (B), and the first branch detection line (12) can be electrically connected to the ship power system (B) first divergence The beginning of the feeder (B1) and the second branch detection line (13) are electrically connected to the beginning of the second branch feeder (B3) of the ship power system (B), and a section of the main detection line (11) is provided with a first section a circuit breaker (2), a section of the first branch detecting line (12) is provided with a second circuit breaker (3), and a section of the second branch detecting line (13) is provided with a third circuit breaker ( 4). a processor (5): the processor (5) is electrically connected to the grounding resistance detecting unit (1), the first circuit breaker (2), the second circuit breaker (3), and the first a three circuit breaker (4), when the ground resistance detecting unit (1) detects that the resistance value of the ship power system (B) is lower than a first preset value, the processor (5) controls the first circuit breaker The device (2) forms an open circuit, controls the second circuit breaker (3) to form an open circuit, controls the third circuit breaker (4) to form a path, and if there is a fourth circuit breaker or more, the remaining circuit breakers all form a path. If the resistance value measured by the grounding resistance detecting unit (1) is higher than a second preset value, it is determined that the first branching feeder (B1) has an insulation abnormality. On the other hand, if the resistance value measured by the grounding resistance detecting unit (1) is still lower than the first preset value, it indicates that the insulation abnormality occurs in other divergent feeders, and at this time, the processor (5) controls the The second circuit breaker (3) forms a path, and the third circuit breaker (4) forms an open circuit, and the remaining circuit breakers all form a path according to the foregoing, and then detect until the branching line of the insulation abnormality is determined. An output terminal (6): the output terminal (6) is electrically connected to the processor (5), the output terminal (6) is configured to output a judgment result of the processor (5), and the output terminal (6) is For screens, indicators, etc., for those who can be informed of the insulation abnormality of the feeder, the output (6) referred to in this manual. An alarm device (7): the processor (5) is electrically connected to the alarm device (7), and when the ground resistance detecting unit (1) detects that the resistance value of the ship power system (B) is lower than the first The processor (5) controls the alarm (7) to operate when a predetermined value is reached. According to the above description, when the ship power system is insulative, the grounding resistance detecting unit (1) detects that the resistance value falls below the first preset value. At this time, the processor (5) is When the alarm device (7) is activated, the automatic control of each circuit breaker is sequentially disconnected, and the remaining circuit breakers form a path. Once the ground resistance detecting unit (1) detects the second preset value of the resistance value rises , indicating that the disconnected feeder connected to the disconnected detection line is broken, and the processor (5) controls the output of the output (6) to detect the result. The engineer was repaired in the first time. The advantages of the creation of the present invention are: 1. Significantly reducing the time it takes to find a divergent feeder that is subject to insulation anomalies, allowing the engineer to repair in the shortest possible time. 2. When repairing, it is not necessary to disconnect the circuit breakers (B4) of each branch feeder (B2, B3) in order, in addition to ensuring that the load (B5) of the normal branch feeder is maintained in normal operation, and the previous operation can be eliminated. The negative impact of the detection methods described in the technology. In summary, the creation of the present invention is indeed in line with the industrial applicability, and is not found in the publication or public use before the application, nor is it known to the public, and has non-obvious knowledge, conforms to the patentable requirements, and is patented according to law. Application. However, the above-mentioned statements are a preferred embodiment of the invention in the creation of the invention, and all the changes in the scope of the patent application according to the invention are within the scope of the claim.
(A)‧‧‧Detection system
(B) ‧‧‧Ship power system
(B1)‧‧‧Main feeder
(B2) ‧‧‧First divergent feeder
(B3) ‧‧‧Second divergent feeder
(B4)‧‧‧ Circuit Breakers
(B5) ‧ ‧ load
(1)‧‧‧Ground resistance detection unit
(11) ‧‧‧ main detection line
(12)‧‧‧First divergent detection line
(13) ‧‧‧Second divergence detection line
(2) ‧‧‧First circuit breaker
(3) ‧‧‧second circuit breaker
(4) ‧‧‧third circuit breaker
(5) ‧‧‧ processor
(6)‧‧‧ Output
(7)‧‧‧Announcer
The first figure is a schematic diagram of the connection of the components of the invention, and a schematic diagram of the state of use. The second figure is a schematic diagram of the conventional technology.

Claims (2)

  1. A ship power distribution feeder insulation abnormal positioning system includes: a ground resistance detecting unit: having a main detection line, a first branch detection line, and a second branch detection line, the main detection line can be powered The first branch detection line is electrically connected to the beginning of the first branch feeder of the ship power system, and the second branch detection line is electrically connected to the second branch feeder of the ship power system. a first circuit breaker is disposed at a section of the main detection line, a second circuit breaker is disposed in a section of the first branch detection line, and a third circuit breaker is disposed in a section of the second branch detection line a processor: electrically connected to the grounding resistance detecting unit, the first circuit breaker, the second circuit breaker, and the third circuit breaker, when the grounding resistance detecting unit detects the ship power system When the resistance value is lower than a first preset value, the processor controls the first circuit breaker to form an open circuit, controls the second circuit breaker to form an open circuit, and controls the third circuit breaker to form a path. When the resistance value measured by the measuring unit is higher than a second preset value, it is determined that the first branching feeder has an insulation abnormality, and if the resistance value measured by the grounding resistance detecting unit is still lower than the first When the preset value is used, the processor controls the second circuit breaker to form a path, and the third circuit breaker forms an open circuit and then detects until the branching line of the insulation abnormality is determined; an output terminal: the electrical connection is processed. The output is available for outputting the judgment result of the processor.
  2. The ship electric power distribution feeder insulation abnormal positioning system according to claim 1, wherein the processor is electrically connected to an alarm device, and the ground resistance detecting unit detects that the resistance value of the ship power system is lower than the first The processor controls the alarm to act upon a predetermined value.
TW106132919A 2017-09-26 2017-09-26 Ship power distribution feeder insulation abnormal positioning system TWI626457B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW106132919A TWI626457B (en) 2017-09-26 2017-09-26 Ship power distribution feeder insulation abnormal positioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW106132919A TWI626457B (en) 2017-09-26 2017-09-26 Ship power distribution feeder insulation abnormal positioning system

Publications (2)

Publication Number Publication Date
TWI626457B true TWI626457B (en) 2018-06-11
TW201915502A TW201915502A (en) 2019-04-16

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW215951B (en) * 1992-09-29 1993-11-11 Minnesota Mining & Mfg Circuit tracer
US20130215538A1 (en) * 2010-12-08 2013-08-22 Panasonic Corporation Leakage detection breaker
CN103809058A (en) * 2014-02-24 2014-05-21 尹忠和 Power supply and distribution intelligent detection system for ship
CN104251959A (en) * 2014-09-18 2014-12-31 云南电网公司电力科学研究院 Method and device for positioning and detecting single-phase grounding fault of power distribution grid
CN104678206A (en) * 2013-11-28 2015-06-03 大连君方科技有限公司 Ship power equipment monitoring system
CN104777397A (en) * 2015-04-16 2015-07-15 王金泽 Distribution line single-phase break line judgment and positioning method based on line voltage vector criterion
CN102959420B (en) * 2010-11-04 2015-09-16 三菱重工业株式会社 Battery abnormality prediction system
CN106443275A (en) * 2016-10-28 2017-02-22 中国舰船研究设计中心 Method and apparatus for monitoring low-voltage distribution transformer for ship

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW215951B (en) * 1992-09-29 1993-11-11 Minnesota Mining & Mfg Circuit tracer
CN102959420B (en) * 2010-11-04 2015-09-16 三菱重工业株式会社 Battery abnormality prediction system
US20130215538A1 (en) * 2010-12-08 2013-08-22 Panasonic Corporation Leakage detection breaker
CN104678206A (en) * 2013-11-28 2015-06-03 大连君方科技有限公司 Ship power equipment monitoring system
CN103809058A (en) * 2014-02-24 2014-05-21 尹忠和 Power supply and distribution intelligent detection system for ship
CN104251959A (en) * 2014-09-18 2014-12-31 云南电网公司电力科学研究院 Method and device for positioning and detecting single-phase grounding fault of power distribution grid
CN104777397A (en) * 2015-04-16 2015-07-15 王金泽 Distribution line single-phase break line judgment and positioning method based on line voltage vector criterion
CN106443275A (en) * 2016-10-28 2017-02-22 中国舰船研究设计中心 Method and apparatus for monitoring low-voltage distribution transformer for ship

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