CN104917162A - Street light power supply system with indirect protection function - Google Patents
Street light power supply system with indirect protection function Download PDFInfo
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- CN104917162A CN104917162A CN201510351203.XA CN201510351203A CN104917162A CN 104917162 A CN104917162 A CN 104917162A CN 201510351203 A CN201510351203 A CN 201510351203A CN 104917162 A CN104917162 A CN 104917162A
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Abstract
本发明涉及一种间接防护功能路灯供电系统，包括交流市电、供电电源、控制开关、剩余电流保护器、AC等电位联接电路和若干路灯，所述交流市电、所述供电电源和所述控制开关依次相连，所述控制开关连接所述若干路灯；所述供电电源接地；所述供电电源和所述控制开关的相接端与所述剩余电流保护器相连，所述剩余电流保护器中嵌设有所述AC等电位联接电路，每个所述路灯的就地基础接地。本发明的路灯供电系统由于采用了上述技术方案，可以有效防止路灯供电系统产生接地故障引发的人身安全事故，也可以防止因中性线重复接地产生杂散电流而引起事故。
The invention relates to a street lamp power supply system with indirect protection function, which includes AC mains, power supply, control switch, residual current protector, AC equipotential connection circuit and several street lamps, the AC mains, the power supply and the The control switches are connected in sequence, and the control switches are connected to the plurality of street lamps; the power supply is grounded; the connecting end of the power supply and the control switch is connected to the residual current protector, and the residual current protector The AC equipotential bonding circuit is embedded, and the local foundation of each street lamp is grounded. The street lamp power supply system of the present invention adopts the above technical solution, which can effectively prevent personal safety accidents caused by grounding faults in the street lamp power supply system, and can also prevent accidents caused by stray currents caused by repeated grounding of the neutral line.
Description
技术领域technical field
本发明涉及一种间接防护功能路灯供电系统。The invention relates to a street lamp power supply system with indirect protection function.
背景技术Background technique
路灯供电系统发生接地故障时，因故障回路内包含两个接地电阻，即供电电源处接地极和路灯就地基础接地极，故障回路阻抗较大，故障电流较小，过电流保护不动作，接地故障防护不能可靠跳闸，供电系统产生接地故障将引发的人身安全事故。同时在现有的路灯供电系统为防范中性线中断，中性线重复接地，容易产生杂散电流而引起事故。When a ground fault occurs in the street lamp power supply system, because the fault circuit contains two grounding resistors, that is, the grounding electrode at the power supply and the local grounding electrode of the street lamp, the impedance of the fault circuit is large, the fault current is small, and the overcurrent protection does not operate. Fault protection cannot reliably trip, and a ground fault in the power supply system will cause personal safety accidents. At the same time, in order to prevent the interruption of the neutral line in the existing street lamp power supply system, the neutral line is repeatedly grounded, which is easy to generate stray current and cause accidents.
发明内容Contents of the invention
本发明的目的，就是为了解决上述现有技术存在的问题，而提供一种间接防护功能路灯供电系统，能够间接防护路灯供电系统的接地故障，可以有效防止路灯供电系统产生接地故障引发的人身安全事故，也可以防止因中性线重复接地产生杂散电流而引起事故。The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and to provide a street lamp power supply system with indirect protection function, which can indirectly protect the ground fault of the street lamp power supply system, and can effectively prevent the personal safety caused by the ground fault of the street lamp power supply system. It can also prevent accidents caused by stray currents caused by repeated grounding of the neutral wire.
实现上述目的的技术方案是：提供一种间接防护功能路灯供电系统，包括交流市电、供电电源、控制开关、剩余电流保护器和、AC等电位联接电路与若干路灯，其中：The technical solution to achieve the above purpose is to provide a street lamp power supply system with indirect protection function, including AC mains, power supply, control switch, residual current protector, AC equipotential connection circuit and several street lamps, wherein:
所述交流市电、所述供电电源和所述控制开关依次相连，所述控制开关连接所述若干路灯；The AC mains, the power supply and the control switch are connected in sequence, and the control switch is connected to the plurality of street lamps;
所述供电电源接地；The power supply is grounded;
所述供电电源和所述控制开关的相接端与所述剩余电流保护器(RCD,Residual Current Devices)相连，所述剩余电流保护器中嵌设有所述AC等电位联接电路；The connecting end of the power supply and the control switch is connected to the residual current protector (RCD, Residual Current Devices), and the AC equipotential connection circuit is embedded in the residual current protector;
每个所述路灯的就地基础接地。The local foundation of each said street light is grounded.
本发明间接防护功能路灯供电系统，供电电源接地和路灯就地基础接地，设置有剩余电流保护器和AC等电位联接电路，能够间接防护路灯供电系统的接地故障，可以有效防止路灯供电系统产生接地故障引发的人身安全事故，也可以防止因中性线重复接地产生杂散电流而引起事故。The street lamp power supply system with indirect protection function of the present invention, the grounding of the power supply and the grounding of the local foundation of the street lamp, is provided with a residual current protector and an AC equipotential connection circuit, which can indirectly protect the ground fault of the street lamp power supply system, and can effectively prevent the street lamp power supply system from being grounded Personal safety accidents caused by faults can also prevent accidents caused by stray currents caused by repeated grounding of the neutral wire.
附图说明Description of drawings
图1是本发明的一种间接防护功能路灯供电系统的结构示意图。Fig. 1 is a schematic structural diagram of a street lamp power supply system with indirect protection function according to the present invention.
具体实施方式Detailed ways
为了使本技术领域的技术人员能更好地理解本发明的技术方案，下面将结合附图对本发明作进一步说明。In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.
请参阅图1，本发明的实施例，一种间接防护功能路灯供电系统，包括交流市电1、供电电源2、控制开关3、剩余电流保护器4、AC等电位联接电路5和若干路灯6。交流市电1、供电电源2、控制开关3依次相连，控制开关3连接若干路灯6；供电电源2接地；供电电源2和控制开关3的相接端与剩余电流保护器4相连，剩余电流保护器4中嵌设有AC等电位联接电路5；每个路灯6的就地基础接地。Please refer to Fig. 1, an embodiment of the present invention, a street lamp power supply system with indirect protection function, including AC mains 1, power supply 2, control switch 3, residual current protector 4, AC equipotential connection circuit 5 and several street lamps 6 . AC mains 1, power supply 2, and control switch 3 are connected sequentially, and control switch 3 is connected to several street lamps 6; power supply 2 is grounded; the connecting end of power supply 2 and control switch 3 is connected to residual current protector 4, and residual current protection An AC equipotential connection circuit 5 is embedded in the device 4; the local foundation of each street lamp 6 is grounded.
本发明的间接防护功能路灯供电系统，交流市电1通过供电电源2，为若干路灯6供电，整个路灯供电系统中，供电电源2处和路灯6就地基础处接地，设置有剩余电流保护器4和AC等电位联接电路5，可以防止因中性线重复接地产生杂散电流而引起事故。供电电源2和控制开关3相接端与剩余电流保护器4相连，剩余电流保护器4中嵌设有AC等电位联接电路5，剩余电流保护器4的整定值，按线路长短计算出相保阻抗和接地故障电流Id，并按Id的1/1.3倍作为剩余电流保护器4动作电流整定值，剩余电流保护器4在路灯供电系统发生接地故障时，可以可靠跳闸，有效防止路灯供电系统产生接地故障引发的人身安全事故，也可以防止因中性线重复接地产生杂散电流而引起事故。In the street lamp power supply system with indirect protection function of the present invention, the AC mains 1 supplies power to several street lamps 6 through the power supply 2. In the entire street lamp power supply system, the power supply 2 and the local foundation of the street lamp 6 are grounded, and a residual current protector is provided. 4 and the AC equipotential connection circuit 5 can prevent accidents caused by stray currents caused by repeated grounding of neutral wires. The power supply 2 and the control switch 3 are connected to the residual current protector 4. The residual current protector 4 is embedded with an AC equipotential connection circuit 5. The setting value of the residual current protector 4 is calculated according to the length of the circuit. Impedance and ground fault current Id, and 1/1.3 times of Id as the operating current setting value of the residual current protector 4, the residual current protector 4 can reliably trip when a ground fault occurs in the street lamp power supply system, effectively preventing the street lamp power supply system from Personal safety accidents caused by ground faults can also prevent accidents caused by stray currents caused by repeated grounding of the neutral wire.
综上所述，本发明的路灯供电系统，能够间接防护路灯供电系统的接地故障，有效防止路灯供电系统产生接地故障引发的人身安全事故，可以防止因中性线重复接地产生杂散电流而引起事故。In summary, the street lamp power supply system of the present invention can indirectly protect the ground fault of the street lamp power supply system, effectively prevent personal safety accidents caused by ground faults in the street lamp power supply system, and can prevent stray currents caused by repeated grounding of the neutral line. ACCIDENT.
以上实施例仅供说明本发明之用，而非对本发明的限制，有关技术领域的技术人员，在不脱离本发明的精神和范围的情况下，还可以做出各种变换或变型，因此所有等同的技术方案也应该属于本发明的范畴，应由各权利要求所限定。The above embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions should also belong to the scope of the present invention and should be defined by each claim.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351203.XA CN104917162A (en) | 2015-06-23 | 2015-06-23 | Street light power supply system with indirect protection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510351203.XA CN104917162A (en) | 2015-06-23 | 2015-06-23 | Street light power supply system with indirect protection function |
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| CN104917162A true CN104917162A (en) | 2015-09-16 |
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| CN201510351203.XA Pending CN104917162A (en) | 2015-06-23 | 2015-06-23 | Street light power supply system with indirect protection function |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716723A (en) * | 2004-03-16 | 2006-01-04 | 魏晋祥 | Leakage potential type action protector |
| US20110075304A1 (en) * | 2009-09-30 | 2011-03-31 | Chevron U.S.A. Inc. | System and method for polyphase ground-fault circuit-interrupters |
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2015
- 2015-06-23 CN CN201510351203.XA patent/CN104917162A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716723A (en) * | 2004-03-16 | 2006-01-04 | 魏晋祥 | Leakage potential type action protector |
| US20110075304A1 (en) * | 2009-09-30 | 2011-03-31 | Chevron U.S.A. Inc. | System and method for polyphase ground-fault circuit-interrupters |
Non-Patent Citations (3)
| Title |
|---|
| 严元生: "防止路灯漏电伤人的探讨", 《中国电力教育》 * |
| 王厚余: "TT系统接地和防电击简析", 《建筑电气》 * |
| 高能等: "配电网接地保护与等电位联结", 《湖北电力》 * |
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