CN202189108U - High voltage shunt capacitor online monitoring device - Google Patents

High voltage shunt capacitor online monitoring device Download PDF

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CN202189108U
CN202189108U CN2011203297420U CN201120329742U CN202189108U CN 202189108 U CN202189108 U CN 202189108U CN 2011203297420 U CN2011203297420 U CN 2011203297420U CN 201120329742 U CN201120329742 U CN 201120329742U CN 202189108 U CN202189108 U CN 202189108U
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capacitor
voltage
monitoring device
unit
signal
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王岩
苏杏志
黄松波
罗容波
刘益军
李慧
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Abstract

本实用新型公开了一种高压并联电容器在线监测装置,其包括:多台电容器、室内部分和室外部分。所述室外部分包括:多个信号传感器,用于收集所述信号传感器发出的电压信号的多个数据采集单元,用于给所述数据采集单元供电的隔离变压器,数据合并单元;所述室内部分包括:交换机,所述数据合并单元与所述交换机连接;数据处理系统,所述数据处理系统包括有信号分析单元及存储单元。本实用新型通过光纤将光电技术引入到高压并联电容器运行状态监测装置中,彻底解决了现有的高压并联电容器监测装置所存在的无法进行高低电位隔离的缺陷;采用多个数据采集单元并行工作的方式,提高了高压并联电容器运行状态监测装置的效率。

Figure 201120329742

The utility model discloses an online monitoring device for high-voltage parallel capacitors, which includes: multiple capacitors, an indoor part and an outdoor part. The outdoor part includes: multiple signal sensors, multiple data acquisition units for collecting voltage signals emitted by the signal sensors, an isolation transformer for powering the data acquisition units, and a data merging unit; the indoor part includes: a switch, the data merging unit is connected to the switch; a data processing system, the data processing system includes a signal analysis unit and a storage unit. The utility model introduces optoelectronic technology into the high-voltage parallel capacitor operation status monitoring device through optical fiber, which completely solves the defect of the existing high-voltage parallel capacitor monitoring device that cannot perform high and low potential isolation; the method of using multiple data acquisition units to work in parallel improves the efficiency of the high-voltage parallel capacitor operation status monitoring device.

Figure 201120329742

Description

高压并联电容器在线监测装置High voltage shunt capacitor online monitoring device

技术领域 technical field

本实用新型涉及电容器监测装置,尤其是指一种高压并联电容器在线监测装置。 The utility model relates to a capacitor monitoring device, in particular to an online monitoring device for a high-voltage parallel capacitor.

背景技术 Background technique

高压并联电容器组故障基本都是其中的单台电容器先出现故障未及时发现处理,继而引起其它电容器故障。但目前电容器组一般仅能监测整组的母线电压和母线电流,难以有效地对各个单台电容器运行状态进行监测,做到及时发现及时处理。 The failure of a high-voltage shunt capacitor bank is basically the failure of a single capacitor in it, which is not found and dealt with in time, and then causes other capacitors to fail. However, at present, the capacitor bank can only monitor the bus voltage and bus current of the whole group, and it is difficult to effectively monitor the operating status of each single capacitor, so as to detect and deal with it in time.

如图1所示的,其示意了现有技术高压并联电容器装置在线监测系统的工作原理图,通过在每台电容器上安装传感器实现了对每台电容器的运行参数进行实时监测、分析及报警,可用于实时在线监测高压并联电容器组运行状态。但电力系统中运行的高压并联电容器装置主要有10kV、35kV、66kV三个电压等级,其中10kV的电容器装置中电容器外壳处于地电位,且装置容量小,电容器台数一般不超过60台,而35kV和66kV电容器装置均安装在对地绝缘的台架上,电容器外壳处于高电位,其上安置的传感器本体亦处于高电位,装置容量较大,电容器台数最大近200台。现有的在线监测系统的技术方案存在以下不足:(1)信号传感器和后台处理装置是由信号电缆进行联结的,电缆传输方式无法实现一、二次设备间的电位隔离,所以仅能在10kV电压等级的电容器装置上使用;(2)所监测的电容器最大不能超过60台,因此存在着很大的使用局限性。 As shown in Figure 1, it illustrates the working principle diagram of the online monitoring system for high-voltage shunt capacitor devices in the prior art. By installing sensors on each capacitor, real-time monitoring, analysis and alarm are realized for the operating parameters of each capacitor. It can be used for real-time online monitoring of the operating status of high-voltage shunt capacitor banks. However, the high-voltage shunt capacitor devices operating in the power system mainly have three voltage levels of 10kV, 35kV, and 66kV. Among them, the capacitor casing of the 10kV capacitor device is at ground potential, and the device capacity is small, and the number of capacitors generally does not exceed 60. The 66kV capacitor devices are all installed on a ground-insulated stand. The capacitor casing is at a high potential, and the sensor body placed on it is also at a high potential. The device has a large capacity, and the maximum number of capacitors is nearly 200. The technical solution of the existing online monitoring system has the following deficiencies: (1) The signal sensor and the background processing device are connected by a signal cable, and the cable transmission method cannot realize the potential isolation between the primary and secondary equipment, so it can only be used at 10kV (2) The maximum number of capacitors monitored cannot exceed 60, so there are great limitations in use.

发明内容 Contents of the invention

本实用新型的发明目的是提供一种高压并联电容器在线监测装置,其克服现有技术的缺陷,扩大高压并联电容器组运行状态在线监测装置的适用范围,可对多台电容器的电压及电流同时进行监测。 The purpose of the invention of this utility model is to provide an online monitoring device for high-voltage parallel capacitors, which overcomes the defects of the prior art, expands the scope of application of the online monitoring device for the operation status of high-voltage parallel capacitor banks, and can monitor the voltage and current of multiple capacitors at the same time. monitor.

本实用新型是这样实现的: The utility model is achieved in that:

一种高压并联电容器在线监测装置,其用于检测多台电容器的运行状态,其包括:室内部分和室外部分,多个所述电容器分为三相,三相电容器组分别安装于电容器平台上,所述电容器通过光纤与所述室外部分连接,所述室外部分通过光纤与所述室内部分连接; An online monitoring device for high-voltage shunt capacitors, which is used to detect the operating status of multiple capacitors, including: an indoor part and an outdoor part, a plurality of the capacitors are divided into three phases, and the three-phase capacitor banks are respectively installed on the capacitor platform, The capacitor is connected to the outdoor part through an optical fiber, and the outdoor part is connected to the indoor part through an optical fiber;

所述室外部分包括: The outdoor part includes:

多个信号传感器,多个所述信号传感器分别安装于所述电容器上; A plurality of signal sensors, a plurality of the signal sensors are respectively installed on the capacitor;

用于收集所述信号传感器发出的电压信号的多个数据采集单元,所述数据采集单元安装于所述电容器平台上,所述数据采集单元通过信号电缆与所述信号传感器连接; A plurality of data acquisition units for collecting voltage signals sent by the signal sensor, the data acquisition unit is installed on the capacitor platform, and the data acquisition unit is connected to the signal sensor through a signal cable;

用于给所述数据采集单元供电的隔离变压器,市电通过所述隔离变压器与所述数据采集单元连接; An isolation transformer for supplying power to the data acquisition unit, the mains power is connected to the data acquisition unit through the isolation transformer;

数据合并单元,所述数据合并单元通过光纤与所述数据采集单元连接; a data merging unit, the data merging unit is connected to the data acquisition unit through an optical fiber;

所述室内部分包括: The indoor part includes:

 交换机,所述数据合并单元通过光纤与所述交换机连接;及 a switch, the data merging unit is connected to the switch through an optical fiber; and

数据处理系统,所述数据处理系统包括有信号分析单元、存储单元及查询单元,所述信号分析单元与所述交换机连接, 所述信号分析单元与所述查询单元及所述存储单元连接; A data processing system, the data processing system includes a signal analysis unit, a storage unit and a query unit, the signal analysis unit is connected to the switch, and the signal analysis unit is connected to the query unit and the storage unit;

其中,所述光纤的外部包裹有绝缘护套,增强了光纤的光电隔离效果。 Wherein, the outside of the optical fiber is wrapped with an insulating sheath, which enhances the photoelectric isolation effect of the optical fiber.

优选的是,所述信号传感器包括有电流传感器和电压传感器,所述电流传感器安装于每个所述电容器的套管根部,所述电压传感器安装于每相电容器组的电容器平台的支撑台架上,通过所述电流传感器及所述电压传感器分别对所述电容器的电流及电压进行实时监测。 Preferably, the signal sensor includes a current sensor and a voltage sensor, the current sensor is installed at the bushing root of each capacitor, and the voltage sensor is installed on the support platform of the capacitor platform of each phase capacitor bank , monitoring the current and voltage of the capacitor in real time through the current sensor and the voltage sensor respectively.

可供选择的是,所述电压传感器为电压互感器或分压器。 Optionally, the voltage sensor is a voltage transformer or a voltage divider.

为了提高所述信号传感器传递信号的稳定性,所述信号传感器通过航空插头以屏蔽接入的方式与所述数据采集单元连接。 In order to improve the stability of the signal transmitted by the signal sensor, the signal sensor is connected to the data acquisition unit in a shielded access manner through an aviation plug.

为了确保所述室外部分的可靠性,所述室外部分的数据合并单元安装在室外屏柜中,且所述室外屏柜置于电容器组围栏的外侧。 In order to ensure the reliability of the outdoor part, the data merging unit of the outdoor part is installed in an outdoor screen cabinet, and the outdoor screen cabinet is placed outside the fence of the capacitor bank.

优选的是,所述隔离变压器的外部由瓷套进进行全密封;所述隔离变压器的绝缘等级高于用于电位的绝缘等级,确保所述隔离变压器的安全性。 Preferably, the exterior of the isolation transformer is fully sealed by a porcelain sleeve; the insulation level of the isolation transformer is higher than that used for electric potential, so as to ensure the safety of the isolation transformer.

优选的是,所述数据处理系统还包括报警装置,所述信号分析单元与所述报警装置连接,当所述信号分析单元监测到电容器的电流或/和电压信号异常时,通过所述报警装置向用户报警。 Preferably, the data processing system further includes an alarm device, the signal analysis unit is connected to the alarm device, and when the signal analysis unit detects that the current or/and voltage signal of the capacitor is abnormal, the alarm device Alert the user.

优选的是,所述数据处理系统还包括显示单元,所述显示单元与所述信号分析单元连接。 Preferably, the data processing system further includes a display unit connected to the signal analysis unit.

优选的是,所述数据采集单元安装于所述电容器平台的下方。 Preferably, the data acquisition unit is installed below the capacitor platform.

本实用新型高压并联电容器在线监测装置与现有技术相比,具有如下有益效果: Compared with the prior art, the online monitoring device for high-voltage parallel capacitors of the present utility model has the following beneficial effects:

1.通过光纤将光电技术引入到高压并联电容器运行状态监测装置中,通过光电转换的方式来采集、传输监测数据,彻底解决了现有的高压并联电容器监测装置所存在的无法进行高低电位隔离的缺陷; 1. The photoelectric technology is introduced into the high-voltage shunt capacitor operation status monitoring device through optical fiber, and the monitoring data is collected and transmitted through photoelectric conversion, which completely solves the defect that the existing high-voltage shunt capacitor monitoring device cannot be isolated from high and low potentials;

2.采用多个数据采集单元并行工作的方式,大大提高了可监测的电容器数量,提高了高压并联电容器运行状态监测装置的效率; 2. Using multiple data acquisition units to work in parallel greatly increases the number of capacitors that can be monitored and improves the efficiency of the high-voltage parallel capacitor operating state monitoring device;

3.可同时对多个电容器进行实时监测,及时发现电容器故障,避免发生突发性事故;同时,有效地了解电容器故障的原因及过程,有针对地采取有效措施,提高电容器运行可靠性,避免群伤、群爆事故的发生。 3. Real-time monitoring of multiple capacitors can be carried out at the same time, and capacitor failures can be found in time to avoid sudden accidents; at the same time, the causes and processes of capacitor failures can be effectively understood, and effective measures can be taken to improve the reliability of capacitor operation and avoid The occurrence of group injuries and group explosion accidents.

附图说明 Description of drawings

图1为现有技术的并联电容器故障在线监测系统的工作原理图; Fig. 1 is the working principle diagram of the prior art shunt capacitor fault on-line monitoring system;

图2为本实用新型高压并联电容器在线监测装置的结构框图; Fig. 2 is the structural block diagram of the utility model high-voltage shunt capacitor online monitoring device;

图3为每相电容器组的电气接线图; Fig. 3 is the electrical wiring diagram of each phase capacitor bank;

图4为隔离变压器的接线原理图。 Figure 4 is a schematic diagram of the wiring of the isolation transformer.

具体实施方式 Detailed ways

下面结合附图对本实用新型的实施例进行详细说明: Embodiment of the utility model is described in detail below in conjunction with accompanying drawing:

本实用新型高压并联电容器在线监测装置,其用于检测多台电容器1的运行状态,包括:室内部分和室外部分,所述电容器1通过光纤与所述室外部分连接,所述室外部分通过光纤与所述室内部分连接。 The utility model high-voltage parallel capacitor online monitoring device is used to detect the operating status of multiple capacitors 1, including: an indoor part and an outdoor part, the capacitor 1 is connected to the outdoor part through an optical fiber, and the outdoor part is connected to the outdoor part through an optical fiber. The indoor sections are connected.

本本实施例以500kV变电站中35kV电容器为例: In this embodiment, a 35kV capacitor in a 500kV substation is used as an example:

多台所述电容器1分为三相,并分别安装于电容器平台2上。本实用新型的电容器1采用中性点不平衡保护方式,每相电容器1分别安装于两台电容器平台2上,每台电容器平台2有两层,每层各放置一半的电容器1,三相电容器组共6个电容器平台。如图2所示,其示意了其中一相电容器的放置方式,本实施例的电容器1的数量为180台,每相电容器组共60台电容器1,因此,两个所述电容器平台2分别放置32台电容器1、28台电容器1。 The plurality of capacitors 1 are divided into three phases and installed on the capacitor platform 2 respectively. The capacitor 1 of the utility model adopts a neutral point unbalanced protection mode, and each phase capacitor 1 is respectively installed on two capacitor platforms 2, and each capacitor platform 2 has two layers, and half of the capacitor 1 is placed on each layer, and the three-phase capacitor Set of 6 capacitor platforms in total. As shown in Figure 2, it has shown the placement mode of wherein one phase capacitor, the quantity of the capacitor 1 of the present embodiment is 180, and each phase capacitor bank has 60 capacitors 1 altogether, therefore, two described capacitor platforms 2 are respectively placed 32 capacitors 1, 28 capacitors 1.

如图3所示,所述室外部分包括: As shown in Figure 3, the outdoor part includes:

多个信号传感器3,多个所述信号传感器3分别安装于所述电容器1上; A plurality of signal sensors 3, a plurality of the signal sensors 3 are respectively installed on the capacitor 1;

用于收集所述信号传感器1发出的电压信号的多个数据采集单元4,所述数据采集单元4安装于所述电容器平台2上,所述数据采集单元4通过信号电缆与所述信号传感器3连接; A plurality of data acquisition units 4 for collecting voltage signals sent by the signal sensor 1, the data acquisition unit 4 is installed on the capacitor platform 2, and the data acquisition unit 4 is connected to the signal sensor 3 through a signal cable connect;

用于给所述数据采集单元4供电的隔离变压器5,市电通过所述隔离变压器5与所述数据采集单元4连接; An isolation transformer 5 for supplying power to the data acquisition unit 4, the mains power is connected to the data acquisition unit 4 through the isolation transformer 5;

数据合并单元6,所述数据合并单元6通过光纤与所述数据采集单元5连接。 A data merging unit 6, the data merging unit 6 is connected to the data acquisition unit 5 through an optical fiber.

其中,所述信号传感器3包括有电流传感器和电压传感器,所述电流传感器安装于每个所述电容器1的套管根部,所述电压传感器安装于每相电容器1的电容器平台2的支撑台架上,通过所述电流传感器及所述电压传感器分别对所述电容器1的电流及电压进行实时监测。 Wherein, the signal sensor 3 includes a current sensor and a voltage sensor, the current sensor is installed on the bushing root of each capacitor 1, and the voltage sensor is installed on the support stand of the capacitor platform 2 of each phase capacitor 1 Above, the current and voltage of the capacitor 1 are monitored in real time by the current sensor and the voltage sensor respectively.

在本实施例中,180台电容器1需要180个电流传感器分别对每台电容器1进行监测,所述电流传感器为硬质开口穿芯式设计,每个电流传感器通过信号电缆将输出的信号传输到所述数据采集单元4,信号电缆可沿所述电容器1的套管根部、箱壳、吊攀及框架铺设。 In this embodiment, 180 capacitors 1 need 180 current sensors to monitor each capacitor 1 respectively. The current sensors are designed with hard open cores, and each current sensor transmits the output signal to the The data acquisition unit 4 and the signal cable can be laid along the bushing root, box shell, suspension and frame of the capacitor 1 .

180台电容器1安装于6台电容器平台2上,因此,需要6个电压传感器。所述电压传感器可为电压互感器或分压器。本实施例优选电压传感器为分压器,分压器高压臂电容为500pF,输电电压为5V,具体结构类型可采用以下方式:分压器的分压臂的各1/2分别封装在两个复合绝缘套管31内,复合绝缘套管31安装在安装有28台电容器1的电容器平台2的支撑台架上,分别接到每相电容器组的进线和中性线,二次出线分别从套管法兰处的小套管32引出,与所述数据采集单元4连接。 180 capacitors 1 are installed on 6 capacitor platforms 2, therefore, 6 voltage sensors are required. The voltage sensor may be a voltage transformer or a voltage divider. In this embodiment, the preferred voltage sensor is a voltage divider, the capacitance of the high voltage arm of the voltage divider is 500pF, and the transmission voltage is 5V. In the composite insulating bushing 31, the composite insulating bushing 31 is installed on the supporting stand of the capacitor platform 2 with 28 capacitors 1 installed, and is respectively connected to the incoming line and neutral line of each phase capacitor bank, and the secondary outgoing line is connected to the The small casing 32 at the flange of the casing is led out and connected with the data acquisition unit 4 .

由于每相电容器1分别放置在2个平台,为保证信号的真实性及现场接线的易操作性,方案遵循就近采集的原则,本实施例优选每台电容器平台2的电容器信号单独安装一个数据采集单元4,三相电容器组共设有6个所述数据采集单元4,每个所述数据采集单元4最多可采集36路模拟信号,电流传感器和分压器模拟信号通过航空插头、屏蔽接入的方式设置。 Since the capacitor 1 of each phase is placed on two platforms respectively, in order to ensure the authenticity of the signal and the ease of operation of the field wiring, the scheme follows the principle of nearby collection. In this embodiment, it is preferable to install a separate data acquisition for the capacitor signal of each capacitor platform 2 Unit 4, the three-phase capacitor bank is provided with 6 data acquisition units 4 in total, and each data acquisition unit 4 can collect 36 channels of analog signals at most, and the current sensor and voltage divider analog signals are connected through aviation plugs and shielding way to set.

所述数据采集单元4的作用是收集所述信号传感器的电压及电流信号,然后进行信号处理,模/数转换,电/光转换,将传感器信号所收集的信号由电信号转换为光信号,以数据包的形式通过光纤从电容器1的高压侧传输到低压侧。由于光纤具有优良的电气绝缘性能,就从根本上解决了以往高压并联电容器在线监测系统的无法进行高低电位隔离的不足。 The function of the data acquisition unit 4 is to collect the voltage and current signals of the signal sensor, and then perform signal processing, analog/digital conversion, electrical/optical conversion, and convert the signal collected by the sensor signal from an electrical signal to an optical signal, It is transmitted from the high-voltage side of the capacitor 1 to the low-voltage side through the optical fiber in the form of data packets. Due to the excellent electrical insulation performance of the optical fiber, it fundamentally solves the problem that the high-voltage shunt capacitor online monitoring system cannot be isolated from high and low potentials.

如图4所示,由于电容器平台2处于1/2相对地电压,为保证安全运行,所述隔离变压器5采用高一等级即35kV绝缘水平,以确保所述隔离变压器5的安全性,所述隔离变压器5的外部由瓷套51进行全密封,输入电压及输出电压均为交流220V,容量为10VA。 As shown in Figure 4, since the capacitor platform 2 is at 1/2 relative ground voltage, in order to ensure safe operation, the isolation transformer 5 adopts a higher level of 35kV insulation level to ensure the safety of the isolation transformer 5, the The exterior of the isolation transformer 5 is fully sealed by a porcelain sleeve 51, the input voltage and output voltage are both AC 220V, and the capacity is 10VA.

所述隔离变压器5的电源进线及用于下传所述数据采集单元4的数据的光纤,需预先铺设穿线管,其中光缆需铺设至室外屏柜,电源进线由电源箱引出至所述隔离变压器5。 The power supply line of the isolation transformer 5 and the optical fiber used for downlinking the data of the data acquisition unit 4 need to be laid in advance through the threading pipe, wherein the optical cable needs to be laid to the outdoor screen cabinet, and the power supply line is drawn out from the power supply box to the Isolation transformer 5.

为了确保所述室内部分的可靠性,所述室外部分的所述数据合并单元6安装在室外屏柜中,且所述室外屏柜置于所述电容器组围栏的外侧。 In order to ensure the reliability of the indoor part, the data combining unit 6 of the outdoor part is installed in an outdoor screen cabinet, and the outdoor screen cabinet is placed outside the fence of the capacitor bank.

所述室内部分包括: The indoor part includes:

交换机7,所述交换机7通过光纤与所述数据合并单元6连接;及 A switch 7, the switch 7 is connected to the data merging unit 6 through an optical fiber; and

数据处理系统8,所述数据处理系统包括有信号分析单元、存储单元、查询单元及显示单元,所述信号分析单元与所述交换机连接,所述信号分析单元与所述查询单元、所述显示单元及所述存储单元连接。本实施例优选所述数据合并单元6与所述交换机7通过以太网的方式连接,所述交换机7与所述数据处理系统8亦通过以太网的方式连接。所述交换机7将其收到的信号从光信号转换为电信号,便于所述数据处理系统8进行数据分析处理。 A data processing system 8, the data processing system includes a signal analysis unit, a storage unit, a query unit and a display unit, the signal analysis unit is connected to the switch, the signal analysis unit is connected to the query unit, the display unit unit and the storage unit are connected. In this embodiment, preferably, the data combining unit 6 is connected to the switch 7 through Ethernet, and the switch 7 and the data processing system 8 are also connected through Ethernet. The switch 7 converts the received signal from an optical signal to an electrical signal, so that the data processing system 8 can perform data analysis and processing.

当所述数据处理系统8收到所述数据合并单元6发送的包含有所述电容器1的电流信号及电压信号的数据包后,经所述信号分析单元(监测软件系统)对每个所述变压器1的运行参数(包括电容器的电压及电流的有效值、峰值、谐波以及电容器每次投切状况)进行实时监测和频谱分析,并定时将监测及分析结果存储于所述存储单元,便于进行历史查询,获知故障电容器的故障类型及原因等问题。 After the data processing system 8 receives the data packet containing the current signal and the voltage signal of the capacitor 1 sent by the data merging unit 6, each of the The operating parameters of the transformer 1 (including the effective value of the voltage and current of the capacitor, the peak value, harmonics, and each switching status of the capacitor) are monitored and analyzed in real time, and the monitoring and analysis results are stored in the storage unit regularly, which is convenient Carry out historical query to learn about the fault type and cause of the faulty capacitor.

优选的是,所述数据处理系统8还包括报警装置,所述信号分析单元与所述报警装置连接,当所述信号分析单元监测到电容器1的电流或/和电压信号异常时,通过所述报警装置报警,引起用户注意。所述报警装置可为报警灯和/或蜂鸣器。 Preferably, the data processing system 8 also includes an alarm device, the signal analysis unit is connected to the alarm device, and when the signal analysis unit detects that the current or/and voltage signal of the capacitor 1 is abnormal, the The alarm device alarms to attract the user's attention. The alarm device can be an alarm lamp and/or a buzzer.

在本实用新型中,为了增加光纤的光电隔离效果,所述光纤的外部包裹有绝缘护套。 In the utility model, in order to increase the photoelectric isolation effect of the optical fiber, the outer part of the optical fiber is wrapped with an insulating sheath.

以上仅为本实用新型的具体实施例,并不以此限定本实用新型的保护范围;在不违反本实用新型构思的基础上所作的任何替换与改进,均属本实用新型的保护范围。 The above are only specific embodiments of the utility model, and do not limit the protection scope of the utility model; any replacement and improvement made on the basis of not violating the concept of the utility model all belong to the protection scope of the utility model.

Claims (10)

1.一种高压并联电容器在线监测装置,其用于检测多台电容器的运行状态,其特征在于,其包括:室内部分和室外部分,电容器分为三相,三相电容器组分别安装于电容器平台上,所述电容器通过光纤与所述室外部分连接,所述室外部分通过光纤与所述室内部分连接; 1. A high-voltage shunt capacitor online monitoring device, which is used to detect the operating status of multiple capacitors, is characterized in that it includes: an indoor part and an outdoor part, the capacitors are divided into three phases, and the three-phase capacitor banks are respectively installed on the capacitor platform Above, the capacitor is connected to the outdoor part through an optical fiber, and the outdoor part is connected to the indoor part through an optical fiber; 所述室外部分包括: The outdoor part includes: 多个信号传感器,多个所述信号传感器分别安装于所述电容器上; A plurality of signal sensors, a plurality of the signal sensors are respectively installed on the capacitor; 用于收集所述信号传感器发出的信号的多个数据采集单元,所述数据采集单元安装于所述电容器平台上,所述数据采集单元通过信号电缆与所述信号传感器连接; A plurality of data acquisition units for collecting signals sent by the signal sensor, the data acquisition unit is installed on the capacitor platform, and the data acquisition unit is connected to the signal sensor through a signal cable; 用于给所述数据采集单元供电的隔离变压器,市电通过所述隔离变压器与所述数据采集单元连接; An isolation transformer for supplying power to the data acquisition unit, the mains power is connected to the data acquisition unit through the isolation transformer; 数据合并单元,所述数据合并单元通过光纤与所述数据采集单元连接; a data merging unit, the data merging unit is connected to the data acquisition unit through an optical fiber; 所述室内部分包括: The indoor part includes:  交换机,所述数据合并单元通过光纤与所述交换机连接;及 a switch, the data merging unit is connected to the switch through an optical fiber; and 数据处理系统,所述数据处理系统包括有信号分析单元、存储单元及查询单元,所述信号分析单元与所述交换机连接,所述信号分析单元与所述查询单元及所述存储单元连接; A data processing system, the data processing system includes a signal analysis unit, a storage unit, and a query unit, the signal analysis unit is connected to the switch, and the signal analysis unit is connected to the query unit and the storage unit; 其中,所述光纤的外部包裹有绝缘护套。 Wherein, the outside of the optical fiber is wrapped with an insulating sheath. 2.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述信号传感器包括有电流传感器和电压传感器,所述电流传感器安装于每个所述电容器的套管根部,所述电压传感器安装于每相电容器组的电容器平台的支撑台架上。 2. The high-voltage shunt capacitor online monitoring device as claimed in claim 1, wherein the signal sensor includes a current sensor and a voltage sensor, and the current sensor is installed at the bushing root of each of the capacitors, and the The voltage sensor is installed on the support platform of the capacitor platform of each phase capacitor bank. 3.如权利要求2所述的高压并联电容器在线监测装置,其特征在于,所述电压传感器为电压互感器或分压器。 3. The high-voltage shunt capacitor online monitoring device according to claim 2, wherein the voltage sensor is a voltage transformer or a voltage divider. 4.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述信号传感器通过航空插头以屏蔽接入的方式与所述数据采集单元连接。 4. The high-voltage shunt capacitor online monitoring device according to claim 1, wherein the signal sensor is connected to the data acquisition unit in a shielded access manner through an aviation plug. 5.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述数据合并单元安装在室外屏柜中,且所述室外屏柜置于电容器组围栏的外侧。 5. The on-line monitoring device for high-voltage shunt capacitors according to claim 1, wherein the data merging unit is installed in an outdoor screen cabinet, and the outdoor screen cabinet is placed outside the fence of the capacitor bank. 6.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述隔离变压器的外部由套瓷进行全密封。 6. The on-line monitoring device for high-voltage shunt capacitors according to claim 1, characterized in that, the exterior of the isolation transformer is completely sealed by a sleeve. 7.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述隔离变压器的绝缘等级高于用于电位的绝缘等级。 7. The on-line monitoring device for high-voltage shunt capacitors according to claim 1, characterized in that the insulation level of the isolation transformer is higher than that used for electric potential. 8.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述数据处理系统还包括报警装置,所述信号分析单元与所述报警装置连接。 8. The online monitoring device for high-voltage shunt capacitors according to claim 1, wherein the data processing system further comprises an alarm device, and the signal analysis unit is connected to the alarm device. 9.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述数据处理系统还包括显示单元,所述显示单元与所述信号分析单元连接。 9. The online monitoring device for high-voltage shunt capacitors according to claim 1, wherein the data processing system further comprises a display unit connected to the signal analysis unit. 10.如权利要求1所述的高压并联电容器在线监测装置,其特征在于,所述数据采集单元安装于所述电容器平台的下方。 10. The high-voltage shunt capacitor online monitoring device according to claim 1, wherein the data acquisition unit is installed under the capacitor platform.
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CN102928709A (en) * 2012-10-31 2013-02-13 广东电网公司东莞供电局 Three-phase harmonic wave-based method and system for detecting reactive compensation capacitor faults
CN103344852A (en) * 2013-06-24 2013-10-09 国家电网公司 On-line monitoring device of high-voltage parallel capacitor
CN103376375A (en) * 2012-04-27 2013-10-30 上海三菱电梯有限公司 Capacitor set internal connection mode identification and parameter setting method
CN103592554A (en) * 2013-12-03 2014-02-19 武汉大学 On-line monitoring system and method of 35kV high voltage shunt capacitor
CN103760431A (en) * 2013-11-29 2014-04-30 国家电网公司 Integrated online monitoring device of parallel capacitor
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CN103376375B (en) * 2012-04-27 2015-10-28 上海三菱电梯有限公司 Capacitor set internal connection mode identification and parameter setting method
CN103376375A (en) * 2012-04-27 2013-10-30 上海三菱电梯有限公司 Capacitor set internal connection mode identification and parameter setting method
CN102928709A (en) * 2012-10-31 2013-02-13 广东电网公司东莞供电局 Three-phase harmonic wave-based method and system for detecting reactive compensation capacitor faults
CN103344852A (en) * 2013-06-24 2013-10-09 国家电网公司 On-line monitoring device of high-voltage parallel capacitor
CN103760431A (en) * 2013-11-29 2014-04-30 国家电网公司 Integrated online monitoring device of parallel capacitor
CN103592554A (en) * 2013-12-03 2014-02-19 武汉大学 On-line monitoring system and method of 35kV high voltage shunt capacitor
CN103592554B (en) * 2013-12-03 2016-01-27 武汉大学 A kind of 35kV high-voltage parallel capacitor on-line monitoring system and method
CN103926495B (en) * 2014-05-05 2017-03-29 国家电网公司 Stepping up from zero test system
CN103926495A (en) * 2014-05-05 2014-07-16 国家电网公司 Zero-from raising voltage test system
CN104135359A (en) * 2014-07-22 2014-11-05 南京磐能电力科技股份有限公司 Hard real-time cascading multi-node synchronous sampling and data transmission method
CN104135359B (en) * 2014-07-22 2017-12-12 南京磐能电力科技股份有限公司 Tandem type multi-node synchronization sampling and data transmission method when a kind of strong
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