CN204681088U - A kind of neutral-point grounding resistance cabinet - Google Patents
A kind of neutral-point grounding resistance cabinet Download PDFInfo
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- CN204681088U CN204681088U CN201520255217.7U CN201520255217U CN204681088U CN 204681088 U CN204681088 U CN 204681088U CN 201520255217 U CN201520255217 U CN 201520255217U CN 204681088 U CN204681088 U CN 204681088U
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- 238000001514 detection method Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 description 17
- 238000001816 cooling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
Description
技术领域 technical field
本实用新型涉及电阻柜技术领域，具体为一种中性点接地电阻柜。 The utility model relates to the technical field of resistance cabinets, in particular to a neutral point grounding resistance cabinet.
背景技术 Background technique
配电系统中性点接地方式通常有中性点不接地、中性点经电阻接地和中性点经消弧线圈接地。各种接地方式不同，使用方式也不同。随着国民经济的发展，许多城市配电网已经改变了过去以架空线路为主的局面，而是以电缆线路为主，与此同时，一些新型设备，如结构紧凑的封闭式SF6 开关柜、交联聚乙烯电缆以及氧化锌避雷器等得到越来越广泛的应用，这就使得原来沿用的非有效接地方式有些不适用。 The neutral point grounding methods of power distribution system usually include ungrounded neutral point, grounded neutral point through resistance and grounded neutral point through arc suppressing coil. Various grounding methods are different and used in different ways. With the development of the national economy, distribution networks in many cities have changed the situation in which overhead lines were the mainstay in the past, but cable lines. At the same time, some new equipment, such as compact closed SF6 switchgear, XLPE cables and zinc oxide arresters are more and more widely used, which makes the original non-effective grounding method somewhat inapplicable.
目前，我国已有不少配电网中性点采用了经电阻接地的运行方式。安装中性点接地电阻柜后，当发生非金属性接地时，受接地点电阻的影响，流过接地点和中性点的电流比金属性接地时有显著降低，同时，健全相电压上升也显著降低，零序电压值约为单相金属性接地的一半。由此可见，采用中性点经电阻接地，可降低单相接地时的暂态过电压、消除弧光接地过电压和某些谐振过电压，并能采用简单的继电保护装置迅速选择故障线路，切除故障点。现有的中性点接地电阻柜工作时，相邻两片电阻的电流流向是相反的，根据物理常识，电阻会受到安培力的作用。当发生单相接地的故障时，现有的中性点接地电阻柜容易发生相邻两片电阻接触到一起的情况，从而造成电阻元件短路，导致设备损坏，甚至会发生人员伤亡等不必要的事故。同时由于不能实时的对柜体进行监控，导致柜体出现故障时不能及时处理，就会造成一些安全隐患，而柜体内产生的热或者湿度都会对电阻柜的正常运行产生相应的影响。因此，如何提供一种结构简单、安全可靠的中性点接地电阻柜，以及如何有效经济的设置中性点接地成为当前供电工作的重点，成为本领域技术人员研究的重要课题。 At present, many distribution network neutral points in my country have adopted the operation mode of grounding through resistance. After the neutral point grounding resistance cabinet is installed, when non-metallic grounding occurs, the current flowing through the grounding point and the neutral point is significantly lower than that of the metallic grounding due to the influence of the grounding point resistance. At the same time, the healthy phase voltage rises also Significantly lower, the zero-sequence voltage value is about half of the single-phase metallic grounding. It can be seen that the use of neutral point grounding through resistance can reduce the transient overvoltage when single-phase grounding, eliminate arc grounding overvoltage and some resonant overvoltage, and can quickly select the fault line with a simple relay protection device, Remove the point of failure. When the existing neutral point grounding resistance cabinet works, the current flow direction of two adjacent resistors is opposite. According to the common sense of physics, the resistance will be affected by the ampere force. When a single-phase grounding fault occurs, the existing neutral point grounding resistance cabinet is prone to two adjacent resistors touching together, resulting in a short circuit of the resistance element, resulting in equipment damage, and even unnecessary casualties such as casualties. ACCIDENT. At the same time, due to the inability to monitor the cabinet in real time, the failure of the cabinet cannot be dealt with in time, which will cause some safety hazards, and the heat or humidity generated in the cabinet will have a corresponding impact on the normal operation of the resistance cabinet. Therefore, how to provide a simple, safe and reliable neutral point grounding resistance cabinet, and how to effectively and economically set the neutral point grounding has become the focus of current power supply work and an important research topic for those skilled in the art.
实用新型内容 Utility model content
本实用新型的目的在于提供一种中性点接地电阻柜，以解决上述背景技术中提出的问题。 The purpose of this utility model is to provide a neutral point grounding resistance cabinet to solve the problems raised in the above-mentioned background technology.
为实现上述目的，本实用新型提供如下技术方案：一种中性点接地电阻柜,包括橡胶底座和柜体，所述柜体设置在橡胶底座上，所述柜体左侧上部设有散热扇，所述柜体顶部设有无线通讯装置、报警装置和防盗装置，所述柜体右侧上部设有控制装置，所述柜体内设有断路器、竖直绝缘子、水平绝缘子、合金电阻、电流互感器、过载保护装置、温度传感器和湿度传感器，所述合金电阻设置在水平绝缘子之间，所述电流互感器与合金电阻连接，所述过载保护装置设置在柜体内顶部，所述温度传感器和湿度传感器分别设置在柜体内左右两侧下部，所述散热扇、过载保护装置、温度传感器和湿度传感器均与控制装置电性连接。 In order to achieve the above purpose, the utility model provides the following technical solutions: a neutral point grounding resistance cabinet, including a rubber base and a cabinet body, the cabinet body is set on the rubber base, and a cooling fan is provided on the upper left side of the cabinet body , the top of the cabinet is provided with a wireless communication device, an alarm device and an anti-theft device, a control device is provided on the upper right side of the cabinet, a circuit breaker, a vertical insulator, a horizontal insulator, an alloy resistor, a current Transformer, overload protection device, temperature sensor and humidity sensor, the alloy resistance is arranged between the horizontal insulators, the current transformer is connected with the alloy resistance, the overload protection device is arranged on the top of the cabinet, the temperature sensor and Humidity sensors are respectively arranged in the lower parts of the left and right sides of the cabinet, and the cooling fan, overload protection device, temperature sensor and humidity sensor are all electrically connected to the control device.
优选的，所述无线通讯装置包括无线通讯发送模块和无线通讯接收模块，且无线通讯装置通过连接线与控制装置电性连接。 Preferably, the wireless communication device includes a wireless communication sending module and a wireless communication receiving module, and the wireless communication device is electrically connected to the control device through a connecting wire.
优选的，所述报警装置为声光报警装置，且报警装置通过连接线与控制装置电性连接。 Preferably, the alarm device is an audible and visual alarm device, and the alarm device is electrically connected to the control device through a connecting wire.
优选的，所述防盗装置为红外防盗装置，且防盗装置通过连接线分别与控制装置和报警装置电性连接。 Preferably, the anti-theft device is an infrared anti-theft device, and the anti-theft device is electrically connected to the control device and the alarm device through connecting wires.
优选的，所述断路器设置为两组，且两组断路器呈对称设置在柜体内底部。 Preferably, the circuit breakers are arranged in two groups, and the two groups of circuit breakers are arranged symmetrically at the bottom of the cabinet.
优选的，所述水平绝缘子设置在竖直绝缘子之间，所述竖直绝缘子和水平绝缘子呈对称设置为两组。 Preferably, the horizontal insulators are arranged between the vertical insulators, and the vertical insulators and the horizontal insulators are symmetrically arranged in two groups.
与现有技术相比，本实用新型的有益效果是：该中性点接地电阻柜,结构设计简单且使用安全可靠，设置的防盗装置能够有效降低电阻柜被偷盗或者破坏的几率，从而保证相应电力设施的正常运行，设置的报警装置能够在电阻柜发生故障、被破坏或者发生偷盗时进行报警，并通过设置的无线通讯装置发送给相应的远程控制端，从而使工作人员能够对问题进行及时的处理，在柜体内设置的温度传感器和湿度传感器能够实时对柜体内的温度和湿度进行监控和检测，避免因柜体内的温度过高或者湿度过大而影响电阻柜的正常运行，设置的散热扇能够对电阻柜进行散热除湿，以及设置的橡胶底座大大提高了电阻柜的抗震能力，进一步保证了电阻柜的正常运行，同时也延长了电阻柜的使用寿命。 Compared with the prior art, the utility model has the beneficial effects that: the neutral point grounding resistance cabinet has a simple structural design and is safe and reliable to use, and the anti-theft device provided can effectively reduce the probability of the resistance cabinet being stolen or damaged, thereby ensuring the corresponding For the normal operation of power facilities, the set alarm device can give an alarm when the resistance cabinet fails, is damaged or is stolen, and sends it to the corresponding remote control terminal through the set wireless communication device, so that the staff can timely respond to the problem. The temperature sensor and humidity sensor set in the cabinet can monitor and detect the temperature and humidity in the cabinet in real time, so as to avoid the influence of the normal operation of the resistance cabinet due to excessive temperature or humidity in the cabinet. The fan can dissipate heat and dehumidify the resistance cabinet, and the rubber base provided greatly improves the shock resistance of the resistance cabinet, further ensures the normal operation of the resistance cabinet, and also prolongs the service life of the resistance cabinet.
附图说明 Description of drawings
图1为本实用新型结构示意图。 Fig. 1 is the structural representation of the utility model.
图中：1橡胶底座、2柜体、3控制装置、4散热扇、5无线通讯装置、6报警装置、7防盗装置、8断路器、9竖直绝缘子、10水平绝缘子、11合金电阻、12电流互感器、13过载保护装置、14温度传感器和15湿度传感器。 In the figure: 1 rubber base, 2 cabinet body, 3 control device, 4 cooling fan, 5 wireless communication device, 6 alarm device, 7 anti-theft device, 8 circuit breaker, 9 vertical insulator, 10 horizontal insulator, 11 alloy resistor, 12 current transformer, 13 overload protection device, 14 temperature sensor and 15 humidity sensor.
具体实施方式 Detailed ways
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。 The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
请参阅图1，本实用新型提供一种技术方案：一种中性点接地电阻柜,包括橡胶底座1和柜体2，所述柜体2设置在橡胶底座1上，所述柜体2左侧上部设有散热扇4，所述柜体2顶部设有无线通讯装置5、报警装置6和防盗装置7，所述无线通讯装置5包括无线通讯发送模块和无线通讯接收模块，且无线通讯装置5通过连接线与控制装置3电性连接，所述报警装置6为声光报警装置，且报警装置6通过连接线与控制装置3电性连接，报警装置6能够在电阻柜发生故障、被破坏或者发生偷盗时进行报警，并通过设置的无线通讯装置5发送给相应的远程控制端，从而使工作人员能够对问题进行及时的处理，所述防盗装置7为红外防盗装置，且防盗装置7通过连接线分别与控制装置3和报警装置6电性连接，防盗装置7能够有效降低电阻柜被偷盗或者破坏的几率，从而保证相应电力设施的正常运行，所述柜体2右侧上部设有控制装置3，所述柜体2内设有断路器8、竖直绝缘子9、水平绝缘子10、合金电阻11、电流互感器12、过载保护装置13、温度传感器14和湿度传感器15，所述断路器8设置为两组，且两组断路器8呈对称设置在柜体2内底部，所述合金电阻11设置在水平绝缘子10之间，所述水平绝缘子10设置在竖直绝缘子9之间，所述竖直绝缘子9和水平绝缘子10呈对称设置为两组，所述电流互感器12与合金电阻11连接，所述过载保护装置13设置在柜体2内顶部，所述温度传感器14和湿度传感器15分别设置在柜2体内左右两侧下部，所述散热扇4、过载保护装置13、温度传感器14和湿度传感器15均与控制装置3电性连接，温度传感器14和湿度传感器15能够实时对柜体2内的温度和湿度进行监控和检测，避免因柜体2内的温度过高或者湿度过大而影响电阻柜的正常运行，散热扇4能够对电阻柜进行散热除湿，以及橡胶底座1大大提高了电阻柜的抗震能力，进一步保证了电阻柜的正常运行，同时也延长了电阻柜的使用寿命。 Please refer to Figure 1, the utility model provides a technical solution: a neutral point grounding resistance cabinet, including a rubber base 1 and a cabinet body 2, the cabinet body 2 is arranged on the rubber base 1, and the cabinet body 2 is left The upper part of the side is provided with a cooling fan 4, and the top of the cabinet body 2 is provided with a wireless communication device 5, an alarm device 6 and an anti-theft device 7, and the wireless communication device 5 includes a wireless communication sending module and a wireless communication receiving module, and the wireless communication device 5 is electrically connected to the control device 3 through a connection line, the alarm device 6 is an audible and visual alarm device, and the alarm device 6 is electrically connected to the control device 3 through a connection line, and the alarm device 6 can fail or be destroyed in the resistance cabinet Or report to the police when theft occurs, and send it to the corresponding remote control terminal by the wireless communication device 5 provided, so that the staff can handle the problem in time. The anti-theft device 7 is an infrared anti-theft device, and the anti-theft device 7 passes The connecting wires are respectively electrically connected with the control device 3 and the alarm device 6. The anti-theft device 7 can effectively reduce the probability of the resistance cabinet being stolen or damaged, thereby ensuring the normal operation of the corresponding power facilities. Device 3, the cabinet body 2 is provided with a circuit breaker 8, a vertical insulator 9, a horizontal insulator 10, an alloy resistor 11, a current transformer 12, an overload protection device 13, a temperature sensor 14 and a humidity sensor 15, the circuit breaker 8 are arranged in two groups, and the two groups of circuit breakers 8 are symmetrically arranged at the bottom of the cabinet 2, the alloy resistors 11 are arranged between the horizontal insulators 10, and the horizontal insulators 10 are arranged between the vertical insulators 9, so The vertical insulators 9 and horizontal insulators 10 are symmetrically arranged in two groups, the current transformer 12 is connected to the alloy resistor 11, the overload protection device 13 is arranged on the top of the cabinet 2, the temperature sensor 14 and the humidity sensor 15 are respectively arranged in the lower part of the left and right sides of the cabinet 2. The cooling fan 4, the overload protection device 13, the temperature sensor 14 and the humidity sensor 15 are all electrically connected to the control device 3. The temperature sensor 14 and the humidity sensor 15 can control the temperature of the cabinet in real time. The temperature and humidity in the body 2 are monitored and detected to avoid the normal operation of the resistance cabinet being affected by excessive temperature or humidity in the cabinet 2. The cooling fan 4 can dissipate heat and dehumidify the resistance cabinet, and the rubber base 1 greatly The anti-seismic ability of the resistance cabinet is improved, the normal operation of the resistance cabinet is further guaranteed, and the service life of the resistance cabinet is also prolonged.
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由所附权利要求及其等同物限定。 Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.
Claims (6)
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| CN201520255217.7U CN204681088U (en) | 2015-04-26 | 2015-04-26 | A kind of neutral-point grounding resistance cabinet |
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| CN201520255217.7U CN204681088U (en) | 2015-04-26 | 2015-04-26 | A kind of neutral-point grounding resistance cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779604A (en) * | 2015-04-26 | 2015-07-15 | 姬广超 | Neutral ground resistor cabinet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779604A (en) * | 2015-04-26 | 2015-07-15 | 姬广超 | Neutral ground resistor cabinet |
| CN104779604B (en) * | 2015-04-26 | 2018-07-27 | 翔声科技（厦门）有限公司 | A kind of neutral-point grounding resistance cabinet |
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