CN204348541U - A kind of Acoustooptic indicator of outdoor AC high-voltage isolating switch combined floodgate degree - Google Patents
A kind of Acoustooptic indicator of outdoor AC high-voltage isolating switch combined floodgate degree Download PDFInfo
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- CN204348541U CN204348541U CN201420401941.1U CN201420401941U CN204348541U CN 204348541 U CN204348541 U CN 204348541U CN 201420401941 U CN201420401941 U CN 201420401941U CN 204348541 U CN204348541 U CN 204348541U
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Abstract
本实用新型公开了一种户外交流高压隔离开关合闸度的声光指示器，它设有直流电阻监测装置（1），所述的直流电阻监测装置（1）设有壳体（2），在壳体（2）的顶部设有左侧桩头（3）和右侧桩头（4），左侧桩头（3）与高压隔离开关（5）的闸刀底部的触头（6）连接，右侧桩头（4）与闸刀的静触头（7）连接，在壳体（1）内设有判别装置（8）和直流测试装置（9），左侧桩头（3）与右侧桩头（4）与直流测试装置（9）的输入端连接，直流测试装置（9）的输出端与判别装置（8）连接，判别装置（8）分别与声音报警器（10）、绿色报警灯（11）和红色报警灯（12）连接。
The utility model discloses an acousto-optic indicator for the closing degree of an outdoor AC high-voltage isolating switch, which is provided with a DC resistance monitoring device (1), and the DC resistance monitoring device (1) is provided with a housing (2), The left pile head (3) and the right pile head (4) are arranged on the top of the housing (2), and the left pile head (3) is connected to the contact (6) at the bottom of the switch blade of the high voltage isolating switch (5) connection, the right pile head (4) is connected with the static contact (7) of the switch knife, and a discrimination device (8) and a DC test device (9) are provided in the housing (1), and the left pile head (3) Connect the right pile head (4) with the input terminal of the DC test device (9), connect the output terminal of the DC test device (9) with the discrimination device (8), and the discrimination device (8) is respectively connected with the sound alarm (10) , Green warning light (11) and red warning light (12) are connected.
Description
技术领域 technical field
本实用新型涉及一种户外交流高压隔离开关合闸度的声光指示器。 The utility model relates to an acousto-optic indicator for the closing degree of an outdoor AC high-voltage isolating switch.
背景技术 Background technique
24kV户外交流高压隔离开关(中压线路中俗称“闸刀”)是中压配电线路中非常重要的开关电器，一般以两侧闸刀或者单侧闸刀的形式与中压断路器配套使用，其主要功能是：保证中压配电设备及装置在检修工作时的安全，起隔离电压的作用，不能用与切断、投入负荷电流和开断短路电流，仅可用于不产生强大电弧的某些切换操作，即是说它不具有灭弧功能。闸刀的使用保证了配电设备检修时形成明显的断口与带电部分隔离，由于隔离开关没有灭弧装置及开断能力低，所以操作隔离开关时，必须遵守倒闸操作顺序，即送电时，首先合上母线侧隔离开关，其次合上线路侧隔离开关，最后合上断路器，停电则于上述相反。 24kV户外交流隔离开关的一般结构，其电气连接部分如下：由一条弯成直角的铜板构成静触头，其有孔的一端可通过螺钉与母线相连接；另一端较短，合闸时它与动刀片（动触头）相接触。 两条铜板组成接触条，又称为动触头，可绕轴转动一定角度，合闸时它夹持住静触头。由户外交流隔离开关（以下简称“闸刀”）引起的故障多达数十次，而这些故障深究其原因多数是由于运行中的闸刀未合闸到位（动触头与静触头的接触程度不够，将直接导致接触电阻过高），这直接影响了配电线路的安全可靠运行。当闸刀合闸不成功，即动静触头未紧密接触的时候未到位时合上中压断路器，则闸刀带电运行。此时动触头和静触头其接触面积不够，刀口合得不严，造成表面氧化，使接触电阻增大，在流过闸刀负荷电流的作用下，根据公式Q=I2×R,此时会造成动静触头接触部分温度很高,长期运行在如此高的温度下,没有合到位的闸刀就成为线路运行中的一个隐患点,往往会引发更加严重的后果。因此如何确保闸刀操作时能完全合到位，就成为一个很值得研究的问题。 The 24kV outdoor AC high-voltage disconnector (commonly known as "knife" in medium-voltage lines) is a very important switching device in medium-voltage distribution lines. Its main functions are: to ensure the safety of medium-voltage power distribution equipment and devices during maintenance work, and to function as an isolation voltage. It cannot be used to cut off, input load current and break short-circuit current. Some switching operations, that is to say, it does not have arc extinguishing function. The use of the switch knife ensures the formation of an obvious fracture and the isolation of the live part during the maintenance of the power distribution equipment. Since the isolating switch has no arc extinguishing device and the breaking capacity is low, when operating the isolating switch, the switching operation sequence must be followed, that is, when the power is transmitted , first turn on the isolating switch on the busbar side, then turn on the isolating switch on the line side, and finally turn on the circuit breaker, and the power failure is the opposite of the above. The general structure of the 24kV outdoor AC isolating switch, its electrical connection part is as follows: the static contact is composed of a copper plate bent into a right angle, and one end with a hole can be connected to the bus bar through a screw; the other end is shorter, and it is connected to the bus when closing The moving blade (moving contact) is in contact. Two copper plates form a contact strip, also known as a moving contact, which can rotate at a certain angle around the axis, and it clamps the static contact when closing. There are as many as dozens of faults caused by the outdoor AC isolating switch (hereinafter referred to as "knife"), and most of these faults are caused by the fact that the switch blade is not closed in place during operation (the contact between the moving contact and the static contact If the degree is not enough, it will directly lead to high contact resistance), which directly affects the safe and reliable operation of the distribution line. When the switch-knife fails to close, that is, when the moving and static contacts are not in close contact, the medium-voltage circuit breaker is closed, and the switch-knife runs with electricity. At this time, the contact area between the moving contact and the static contact is not enough, and the knife edge is not tightly closed, which causes surface oxidation and increases the contact resistance. Under the action of the load current flowing through the switch knife, according to the formula Q=I 2 ×R, At this time, the temperature of the contact part of the dynamic and static contacts will be very high. If the switch knife is not closed in place after long-term operation at such a high temperature, it will become a hidden danger in the line operation, which will often lead to more serious consequences. Therefore, how to ensure that the switch knife can be fully closed during operation has become a problem worthy of study.
发明内容 Contents of the invention
本实用新型提供了一种户外交流高压隔离开关合闸度的声光指示器，它使得闸刀动静触头的接触面积增大，接触电阻减小，有效地遏制了闸刀类的安全隐患，减少由于刀闸故障引起的中压线路停电，从而提升电网的安全运行水平和社会经济效益。 The utility model provides an acousto-optic indicator for the closing degree of an outdoor AC high-voltage isolating switch, which increases the contact area of the moving and static contacts of the switch knife, reduces the contact resistance, and effectively curbs the safety hazards of the switch knife. Reduce medium-voltage line power outages caused by knife switch failures, thereby improving the safe operation level of the power grid and social and economic benefits.
本实用新型采用了以下技术方案：一种户外交流高压隔离开关合闸度的声光指示器，它设有直流电阻监测装置，所述的直流电阻监测装置设有壳体，在壳体的顶部设有左侧桩头和右侧桩头，左侧桩头与高压隔离开关的闸刀底部的触头连接，右侧桩头与闸刀的静触头连接，在壳体内设有判别装置和直流测试装置，左侧桩头与右侧桩头与直流测试装置的输入端连接，直流测试装置的输出端与判别装置连接，判别装置分别与声音报警器、绿色报警灯和红色报警灯连接。 The utility model adopts the following technical solutions: an acousto-optic indicator for the closing degree of an outdoor AC high-voltage isolating switch, which is provided with a DC resistance monitoring device, and the DC resistance monitoring device is provided with a housing, and the top of the housing is There are left pile head and right pile head, the left pile head is connected with the contact at the bottom of the switch knife of the high voltage isolating switch, the right pile head is connected with the static contact of the switch knife, and a discrimination device and The DC test device, the left pile head and the right pile head are connected to the input end of the DC test device, the output end of the DC test device is connected to the discriminating device, and the discriminating device is respectively connected to the sound alarm, the green warning light and the red warning light.
所述的左侧桩头与高压隔离开关的底部的触头之间通过左连接线连接，左连接线为内部敷线。所述的右侧桩头与闸刀的静触头之间通过右连接线连接，右连接线为内部敷线。所述的直流电阻监测装置紧贴在高压隔离开关的底座上。所述的直流电阻监测装置设置为无源型直流电阻监测装置。 The left pile head is connected to the contact at the bottom of the high-voltage isolating switch through a left connection line, and the left connection line is an internal wiring. The right side pile head and the static contact of the switch knife are connected by a right connection line, and the right connection line is an internal wiring. The DC resistance monitoring device is closely attached to the base of the high voltage isolating switch. The DC resistance monitoring device is set as a passive DC resistance monitoring device.
本实用新型具有以下有益效果：采用了以上技术方案后，本实用新型设设有直流电阻监测装置，所述的直流电阻监测装置设有壳体，在壳体的顶部设有左侧桩头和右侧桩头，左侧桩头与高压隔离开关的闸刀底部的触头连接，右侧桩头与闸刀的静触头连接，在壳体内设有判别装置和直流测试装置，左侧桩头与右侧桩头与直流测试装置的输入端连接，直流测试装置的输出端与判别装置连接，判别装置分别与声音报警器、绿色报警灯和红色报警灯连接，这样通过直流电阻监测装置的加装，能够对于闸刀是否合闸到位进行一个直观的判别，闸刀合闸到位，接触电阻小于设定值则指示器发出声音讯号二，同时绿灯亮，表示动静触头接触到位，从而使得闸刀动静触头的接触面积增大，接触电阻减小，有效地遏制了闸刀类的安全隐患，减少由于刀闸故障引起的中压线路停电，从而提升电网的安全运行水平和社会经济效益。本实用新型左侧桩头与高压隔离开关的底部的触头之间通过左连接线连接，左连接线为内部敷线，右侧桩头与闸刀的静触头之间通过右连接线连接，右连接线为内部敷线，这样可以避免短路现象的发生。 The utility model has the following beneficial effects: after adopting the above technical scheme, the utility model is provided with a DC resistance monitoring device, the DC resistance monitoring device is provided with a shell, and the left pile head and The right pile head, the left pile head is connected to the contact at the bottom of the switch blade of the high-voltage isolating switch, the right pile head is connected to the static contact of the switch blade, and a discrimination device and a DC test device are installed in the shell, and the left pile head The pile head on the right side is connected to the input terminal of the DC test device, the output terminal of the DC test device is connected to the discrimination device, and the discrimination device is respectively connected to the sound alarm, the green alarm light and the red alarm light, so that through the DC resistance monitoring device With additional installation, an intuitive judgment can be made on whether the switch knife is in place. If the switch knife is in place and the contact resistance is less than the set value, the indicator will emit a sound signal 2, and the green light will be on at the same time, indicating that the moving and static contacts are in place, so that The contact area of the moving and static contacts of the switch knife is increased, and the contact resistance is reduced, which effectively curbs the safety hazards of the switch knife and reduces the power outage of the medium-voltage line caused by the knife switch failure, thereby improving the safe operation level of the power grid and social and economic benefits . The left pile head of the utility model is connected with the contact at the bottom of the high-voltage isolating switch through the left connection line, the left connection line is an internal wiring, and the right pile head is connected with the static contact of the gate knife through the right connection line , the right connecting line is internal wiring, which can avoid the occurrence of short circuit.
附图说明 Description of drawings
图1为本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
具体实施方式 Detailed ways
在图1中，本实用新型提供了一种户外交流高压隔离开关合闸度的声光指示器，它设有直流电阻监测装置1，所述的直流电阻监测装置1设有壳体2，在壳体2的顶部设有左侧桩头3和右侧桩头4，左侧桩头3与高压隔离开关5的闸刀底部的触头6连接，所述的左侧桩头3与高压隔离开关5的底部的触头6之间通过左连接线14连接，左连接线14为内部敷线，右侧桩头4与闸刀的静触头7连接，所述的右侧桩头4与闸刀的静触头7之间通过右连接线13连接，右连接线13为内部敷线，在壳体1内设有判别装置8和直流测试装置9，左侧桩头3与右侧桩头4与直流测试装置9的输入端连接，直流测试装置9的输出端与判别装置8连接，判别装置8分别与声音报警器10、绿色报警灯11和红色报警灯12连接，所述的直流电阻监测装置1紧贴在高压隔离开关5的底座上，所述的直流电阻监测1装置设置为无源型直流电阻监测装置，直流测试装置9测量闸刀底部的触头6至闸刀静触头7的直流电阻R0，并将直流电阻R0的值返回给判别装置8，判断装置8根据设定的标准值来判断隔离开关5的刀闸是否合闸到位，当测量的直流电阻R0大于设定的标准值时，则说明刀闸未合闸到位，判断装置8将发送合闸不成功讯号给声音报警器10报警，同时红色报警灯12亮，表示合闸不成功，若直流电阻R0小于等于标准值，则说明刀闸合闸到位，判别装置8发送合闸成功讯号给声音报警器10，同时绿色报警灯11亮，表示合闸成功。 In Fig. 1, the utility model provides an acousto-optic indicator for the closing degree of an outdoor AC high-voltage isolating switch, which is provided with a DC resistance monitoring device 1, and the DC resistance monitoring device 1 is provided with a housing 2, in which The top of the housing 2 is provided with a left pile head 3 and a right pile head 4, and the left pile head 3 is connected to the contact 6 at the bottom of the switch knife of the high voltage isolating switch 5, and the left pile head 3 is isolated from the high voltage The contacts 6 at the bottom of the switch 5 are connected by the left connection line 14, the left connection line 14 is an internal wiring, the right side pile head 4 is connected with the static contact 7 of the switch knife, and the right side pile head 4 is connected with the The static contacts 7 of the switch blades are connected through the right connection line 13, which is an internal wiring, and a discrimination device 8 and a DC test device 9 are arranged in the housing 1, and the pile head 3 on the left side is connected to the pile head on the right side. The head 4 is connected with the input end of the DC testing device 9, and the output terminal of the DC testing device 9 is connected with the discriminating device 8, and the discriminating device 8 is connected with the sound alarm 10, the green warning lamp 11 and the red warning lamp 12 respectively, and the described DC The resistance monitoring device 1 is closely attached to the base of the high-voltage isolating switch 5. The DC resistance monitoring device 1 is set as a passive DC resistance monitoring device, and the DC testing device 9 measures the contact 6 at the bottom of the switch knife to the static contact of the switch knife. The DC resistance R 0 of the head 7, and return the value of the DC resistance R 0 to the judging device 8, and the judging device 8 judges whether the switch of the isolating switch 5 is closed in place according to the set standard value. When the measured DC resistance R When 0 is greater than the set standard value, it means that the knife switch has not been closed in place, and the judging device 8 will send a signal of unsuccessful closing to the sound alarm 10 to alarm, and at the same time, the red alarm light 12 is on, indicating that the closing is unsuccessful. If the resistance R0 is less than or equal to the standard value, it means that the knife switch is in place, and the judging device 8 sends a closing success signal to the sound alarm 10, and the green alarm light 11 is on at the same time, indicating that the closing is successful.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401941.1U CN204348541U (en) | 2014-07-20 | 2014-07-20 | A kind of Acoustooptic indicator of outdoor AC high-voltage isolating switch combined floodgate degree |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420401941.1U CN204348541U (en) | 2014-07-20 | 2014-07-20 | A kind of Acoustooptic indicator of outdoor AC high-voltage isolating switch combined floodgate degree |
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| CN204348541U true CN204348541U (en) | 2015-05-20 |
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| CN201420401941.1U Expired - Fee Related CN204348541U (en) | 2014-07-20 | 2014-07-20 | A kind of Acoustooptic indicator of outdoor AC high-voltage isolating switch combined floodgate degree |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786169A (en) * | 2018-12-28 | 2019-05-21 | 国家电网公司 | New distribution net isolation switch |
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2014
- 2014-07-20 CN CN201420401941.1U patent/CN204348541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786169A (en) * | 2018-12-28 | 2019-05-21 | 国家电网公司 | New distribution net isolation switch |
| CN109786169B (en) * | 2018-12-28 | 2024-03-01 | 国家电网公司 | Disconnecting switch of power distribution network |
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