WO2021175107A1 - Testing method for double-fracture busbar disconnector in 220-kilovolt power transformation combined electrical device - Google Patents

Testing method for double-fracture busbar disconnector in 220-kilovolt power transformation combined electrical device Download PDF

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WO2021175107A1
WO2021175107A1 PCT/CN2021/075959 CN2021075959W WO2021175107A1 WO 2021175107 A1 WO2021175107 A1 WO 2021175107A1 CN 2021075959 W CN2021075959 W CN 2021075959W WO 2021175107 A1 WO2021175107 A1 WO 2021175107A1
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double
break
bus
isolating switch
voltage
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PCT/CN2021/075959
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French (fr)
Chinese (zh)
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程子豪
吴丹
曾凡兴
姜文
付磊
毛毳闽
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湖北省电力勘测设计院有限公司
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials

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  • the invention belongs to the detection technology of high-voltage substation equipment, and specifically relates to a detection technology for a double-break bus disconnect switch in a 220-kV combined electrical equipment.
  • Newly-built substations in my country are generally constructed in phases as required.
  • Most of the 220kV power distribution devices in substations adopt double-bus connection and the construction of double-bus connection is completed in the first phase of the project.
  • the 220kV conventional combined electrical equipment has only one isolation break for the bus isolation switch, which cannot meet the withstand voltage requirements of the operating voltage and the test voltage at the same time. Therefore, during the expansion, the installation of the spare bay and the handover withstand voltage test need to deal with the power failure of the incoming double busbars in the original operation.
  • most of the test methods of domestic combined electrical appliances are only for the conventional single-break disconnect switch combined electrical equipment.
  • the combined electrical equipment using double-break bus isolation switch can solve the continuous power expansion problem of the substation prospective project, such as the CN106374380BGIS bus spare interval non-stop power expansion function module and expansion method.
  • the double busbar connection adopts double-break busbar isolation switch equipment.
  • the existing detection of double-break bus disconnect switch in high-voltage substation combined electrical equipment is to use the traditional single-break combined electrical equipment test method to test new double-break equipment.
  • the double-break bus disconnect switch ("spare") Interval) the overall pressure test is divided into two different phases of the test.
  • the double-break bus disconnect switch When the "standby" interval is extended in the long term, after the equipment is installed, the double-break bus disconnect switch is in position, and the circuit breaker is closed. At this time, no matter whether the busbar is live or not, it can be pressurized at the outlet bushing of the interval, and the break on the side of the busbar disconnector breaker can be detected to meet the test requirements.
  • the above scheme divides the detection of the double-broken busbar disconnector into a first-phase detection and a second-phase detection.
  • the detection cycle is long, and the environment and state of the detection before and after are different, which is not conducive to the evaluation and analysis of the double-broken bus disconnector electrical appliances.
  • the purpose of the present invention is to provide a voltage withstand test of a double-break bus disconnecting switch combined electric appliance, so as to realize the completion of the detection of the double-break bus disconnecting switch combined electric appliance in the first phase of the project.
  • the technical scheme of the present invention is: it includes a first bus bar and a second bus bar; the first bus bar is connected to the first end of the first double-break isolating switch of the double-break bus isolating switch, and the second bus bar is connected to the double-break bus isolating switch.
  • the first end of the second double-break isolating switch, the second end of the first double-break isolating switch are connected to the second end of the second double-break isolating switch, and the feature is that the double-break bus isolating switch is detected as: closing the double-break bus
  • One switch in the isolating switch applies voltage to the first bus and the second bus respectively, and detects the two ends of the other unclosed double-break bus isolating switch respectively, and then exchanges the opening and closing relationship of the double-break bus isolating switch, repeating the above
  • the voltage application process completes the detection of the double-break bus isolation switch.
  • a further optimized technical feature is: it also includes at least a first spacer device lead wire and a second spacer device lead wire connected between the first bus bar and the second bus bar.
  • the voltage applied to the first bus bar and the second bus bar is The wires are led out through the first spacer device, and the wires are led out by the second spacer device.
  • a further optimized technical feature is that the applied voltage is to apply an operating voltage to one bus, and to apply a test voltage to the other bus.
  • the voltage application process includes one or more of a burn-in test pressurization process, an AC voltage endurance test pressurization process, or a partial discharge test pressurization process.
  • the invention completes the construction of the double-break bus isolating switch for the double bus and the spare compartment outlet (long-term project) in the first phase of the 220 kV substation.
  • the double-break bus isolating switch is alternately switched on and off, and the voltage is applied to the double bus to complete the double
  • the detection environment and status of the broken bus disconnecting switch electrical appliances are the same.
  • the detection and evaluation calibers of the double broken bus disconnecting switch electrical appliances are the same, and the detection results truly reflect the status of the first phase of the project.
  • the first phase of the project has been completed at least two spaced lead wires for pressurization, which is convenient for the connection of pressurizing equipment.
  • Figure 1 Schematic diagram of the circuit structure of a 220kV double-break bus isolation switch.
  • FIG. 1 Schematic diagram of the principle of the test pressure device
  • FIG. 1 Schematic diagram of the test pressurization process.
  • FIG. 1 it is a partial schematic diagram of the power distribution device of the 220kV substation that has been completed in the first phase of the project, including the 220kV first busbar I and the 220kV second busbar II; the equipment has been completed It includes at least the lead wire 1 of the first partition device and the lead wire 2 of the second partition device; a double-break bus disconnect switch is connected between the first bus bar I and the second bus bar II; the double-break bus bar is connected to the first bus bar I in this embodiment
  • the first end of the first double-break isolating switch DDS1 of the isolating switch and the first end of the second double-break isolating switch DDS2 of the double-break bus isolating switch are connected to the second bus bar II; that is, the connection on the bus side of the double-break bus isolating switch.
  • the second end of the first double-break isolating switch DDS1 is connected to the second end of the second double-break isolating switch DDS2, that is, the connection on the outlet side of the spare line, and the outlet side of the spare line is connected to the circuit breaker CB.
  • the spare outlet line in the figure is a dashed line, indicating that it is the second phase of the project that has not yet been constructed.
  • the principle of the voltage application device used for the detection of the double-break bus isolation switch is shown in Figure 2. It includes the frequency conversion controller FC, the excitation transformer Tr, the high-voltage inductor L, the test capacitor Cx, and the measuring voltage divider C1, C2.
  • the above-mentioned pressurizing device is an existing conventional test voltage pressurizing device.
  • the test power supply is taken from the maintenance box of the power distribution equipment room, and a switch larger than 100A is selected.
  • the power supply is selected with sufficient margin to ensure the safety of electricity.
  • test process of the double-break bus disconnect switch is as follows:
  • sequence of the above steps is not unique. Based on the technical solution of the present invention, the sequence of the above steps can be adjusted according to site conditions.
  • the above process realizes the burn-in test, the AC voltage withstand test and the partial discharge test on the bus side and the backup line side of the double-break bus isolating switch completed in the first phase of the project.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

Disclosed is a testing method for a double-fracture busbar disconnector in a 220-kilovolt power transformation combined electrical device. A first busbar and a second busbar are comprised, wherein the first busbar is connected to a first end of a first double-fracture disconnector of a double-fracture busbar disconnector, the second bus is connected to a first end of a second double-fracture disconnector of the double-fracture busbar disconnector, and a second end of the first double-fracture disconnector is connected to a second end of the second double-fracture disconnector; and the testing of the double-fracture busbar disconnector comprises: closing one double-fracture disconnector in the double-fracture busbar disconnector, respectively applying a voltage to the first busbar and the second busbar, respectively testing two ends of the other double-fracture disconnector which is not closed, then exchanging the opening and closing relationships of the double-fracture disconnectors, and repeating the voltage applying process, thereby completing the testing of the double-fracture busbar disconnector.

Description

220千伏变电组合电器设备中双断口母线隔离开关的检测方法Detection method of double-break bus isolation switch in 220 kV substation combined electrical equipment 技术领域Technical field
本发明属于高压变电设备检测技术，具体涉及用于220千伏组合电器设备中双断口母线隔离开关的检测技术。The invention belongs to the detection technology of high-voltage substation equipment, and specifically relates to a detection technology for a double-break bus disconnect switch in a 220-kV combined electrical equipment.
背景技术Background technique
我国新建变电站一般按需采用分期建设，其中大部分变电站220千伏配电装置采用双母线接线并在一期工程中完成双母线接线建设。220千伏常规组合电器设备由于母线隔离开关仅有一个隔离断口，不能同时满足运行电压和试验电压的耐压要求。所以在扩建时，备用间隔的安装及交接耐压试验需要对原运行的双母线进线停电处理。目前国内绝大多数组合电器的试验方法仅针对该常规的单断口隔离开关的组合电器设备。目前220千伏变电站双母线接线中，通过采用双断口母线隔离开关的组合电器设备，能解决变电站远景工程的不断电扩建问题，如CN106374380BGIS母线备用间隔不停电扩建功能模块及扩建方法。在一期工程中的备用出线间隔，双母线上连接采用双断口母线隔离开关设备。Newly-built substations in my country are generally constructed in phases as required. Most of the 220kV power distribution devices in substations adopt double-bus connection and the construction of double-bus connection is completed in the first phase of the project. The 220kV conventional combined electrical equipment has only one isolation break for the bus isolation switch, which cannot meet the withstand voltage requirements of the operating voltage and the test voltage at the same time. Therefore, during the expansion, the installation of the spare bay and the handover withstand voltage test need to deal with the power failure of the incoming double busbars in the original operation. At present, most of the test methods of domestic combined electrical appliances are only for the conventional single-break disconnect switch combined electrical equipment. In the current 220kV substation double bus wiring, the combined electrical equipment using double-break bus isolation switch can solve the continuous power expansion problem of the substation prospective project, such as the CN106374380BGIS bus spare interval non-stop power expansion function module and expansion method. In the spare outlet interval of the first phase of the project, the double busbar connection adopts double-break busbar isolation switch equipment.
目前，应用了220千伏双断口隔离开关技术组合电器的变电站在我国仅有两例。在一期工程中，需要对220千伏组合电器的进行耐压试验，即采用变频串联谐振方法对相关设备进行加压，检查220千伏组合电器设备总体安装后是否存在各种导致内部故障的隐患(包括安装、运输、储存和安装调试中的损坏，存在异物等)，验证其绝缘性能是否满足要求。At present, there are only two substations in my country that have applied 220kV double-break isolation switch technology combined electrical appliances. In the first phase of the project, it is necessary to carry out the withstand voltage test of the 220kV combined electrical equipment, that is, use the frequency conversion series resonance method to pressurize the related equipment, and check whether there are various causes of internal failures after the overall installation of the 220kV combined electrical equipment. Hidden hazards (including damage during installation, transportation, storage, and installation and commissioning, the presence of foreign objects, etc.), verify whether the insulation performance meets the requirements.
现有的对高压变电组合电器设备中双断口母线隔离开关的检测，是利用传统单断口组合电器设备的试验方法来对新型双断口设备试验，原则需将双断口母线隔离开关(“备用”间隔)的整体耐压试验拆分成两次不同阶段的试验。The existing detection of double-break bus disconnect switch in high-voltage substation combined electrical equipment is to use the traditional single-break combined electrical equipment test method to test new double-break equipment. In principle, the double-break bus disconnect switch ("spare") Interval) the overall pressure test is divided into two different phases of the test.
阶段一：Phase 1:
在一期工程中，双母线及“备用”间隔母线隔离开关安装建设完成，“备用”间隔其他设备如断路器等空缺。设备安装完成后，将“备用”间隔隔离开关处于分位，通过任一“已建”出线间隔反向对母线加压，检验“备用”间隔的双断口隔离开关母线侧断口 满足试验要求。In the first phase of the project, the installation and construction of the double busbar and "spare" bay bus isolation switch was completed, and the "spare" bay was vacant for other equipment such as circuit breakers. After the equipment is installed, put the "spare" bay isolating switch in position, and pressurize the busbar through any "built" outgoing bay in reverse, and verify that the bus-side fracture of the double break isolating switch of the "spare" bay meets the test requirements.
阶段二：Phase two:
当该“备用”间隔远期进行扩建时，设备安装完毕后，将双断口母线隔离开关处于分位，断路器合上。此时无论母线是否带电，均可在该间隔出线套管处加压，检测母线隔离开关断路器侧断口满足试验要求。When the "standby" interval is extended in the long term, after the equipment is installed, the double-break bus disconnect switch is in position, and the circuit breaker is closed. At this time, no matter whether the busbar is live or not, it can be pressurized at the outlet bushing of the interval, and the break on the side of the busbar disconnector breaker can be detected to meet the test requirements.
上述方案将双断口母线隔离开关的检测分成一期检测和二期检测，检测周期长，前后检测的环境及状态不同，不利于对双断口母线隔离开关电器的评估分析。The above scheme divides the detection of the double-broken busbar disconnector into a first-phase detection and a second-phase detection. The detection cycle is long, and the environment and state of the detection before and after are different, which is not conducive to the evaluation and analysis of the double-broken bus disconnector electrical appliances.
发明内容Summary of the invention
本发明的目的在于提供一种双断口母线隔离开关组合电器的耐压试验，实现在一期工程中完成对双断口母线隔离开关组合电器的检测。The purpose of the present invention is to provide a voltage withstand test of a double-break bus disconnecting switch combined electric appliance, so as to realize the completion of the detection of the double-break bus disconnecting switch combined electric appliance in the first phase of the project.
本发明的技术方案为：它包括第一母线，第二母线；第一母线上连接双断口母线隔离开关的第一双断口隔离开关的第一端，第二母线上连接双断口母线隔离开关的第二双断口隔离开关的第一端，第一双断口隔离开关的第二端与第二双断口隔离开关的第二端连接，其特征是对双断口母线隔离开关检测为：闭合双断口母线隔离开关中的一个开关，对第一母线和第二母线分别施加电压，对另一个未闭合的双断口母线隔离开关的两端分别检测后，再交换双断口母线隔离开关开闭合关系，重复上述施加电压过程，完成双断口母线隔离开关的检测。The technical scheme of the present invention is: it includes a first bus bar and a second bus bar; the first bus bar is connected to the first end of the first double-break isolating switch of the double-break bus isolating switch, and the second bus bar is connected to the double-break bus isolating switch. The first end of the second double-break isolating switch, the second end of the first double-break isolating switch are connected to the second end of the second double-break isolating switch, and the feature is that the double-break bus isolating switch is detected as: closing the double-break bus One switch in the isolating switch applies voltage to the first bus and the second bus respectively, and detects the two ends of the other unclosed double-break bus isolating switch respectively, and then exchanges the opening and closing relationship of the double-break bus isolating switch, repeating the above The voltage application process completes the detection of the double-break bus isolation switch.
进一步的优化技术特征是：它还包括第一母线和第二母线之间至少连接有第一间隔设备引出线，第二间隔设备引出线，所述对第一母线和第二母线分别施加电压是分别通过第一间隔设备引出线，第二间隔设备引出线实施的。A further optimized technical feature is: it also includes at least a first spacer device lead wire and a second spacer device lead wire connected between the first bus bar and the second bus bar. The voltage applied to the first bus bar and the second bus bar is The wires are led out through the first spacer device, and the wires are led out by the second spacer device.
进一步的优化技术特征是：所述施加电压是对一个母线施加运行电压，对另一母线施加测试电压。A further optimized technical feature is that the applied voltage is to apply an operating voltage to one bus, and to apply a test voltage to the other bus.
进一步的优化技术特征是：所述施加电压过程包括老练试验加压过程，交流电压耐受试验加压过程或局部放电试验加压过程中的一种或几种。A further optimized technical feature is that: the voltage application process includes one or more of a burn-in test pressurization process, an AC voltage endurance test pressurization process, or a partial discharge test pressurization process.
进一步的优化技术特征是：The further optimized technical features are:
(1)闭合第一间隔设备引出线间隔的第一断路器及第一母线第一单断口隔离开关，将第二母线第二单断口隔离开关处于分位；(1) Close the first circuit breaker and the first single-break isolating switch of the first bus bar, and the second single-break isolating switch of the second bus bar is in position;
(2)闭合第二间隔设备引出线间隔的第二断路器及第二母线第四单断口隔离开关，将第二母线第三单断口隔离开关处于分位；(2) Close the second circuit breaker and the fourth single-break isolating switch of the second busbar of the second compartment equipment lead-out interval, and the third single-break isolating switch of the second busbar is in position;
(3)闭合第二母线上的第二双断口隔离开关，第二双断口隔离开关中间接地端处于分位；(3) Close the second double-break isolating switch on the second bus, and the middle ground terminal of the second double-break isolating switch is in the position;
(4)打开第一母线上的第一双断口隔离开关，第一双断口隔离开关中间接地端接地；(4) Turn on the first double-break isolating switch on the first bus, and the middle ground terminal of the first double-break isolating switch is grounded;
(5)在第一间隔设备引出线间隔出线侧施加运行电压，在第二间隔设备引出线间隔出线侧施加试验电压，对第一双断口隔离开关检测一端检测；在第一间隔设备引出线间隔出线侧施加试验电压，在第二间隔设备引出线间隔出线侧施加运行电压，对第一双断口隔离开关检测另一端检测；(5) Apply operating voltage to the outlet side of the lead-out line of the first compartment, and apply a test voltage to the lead-out side of the second compartment. Apply a test voltage on the outlet side, apply an operating voltage on the outlet side of the second interval device's outlet interval, and detect the other end of the first double-break isolating switch;
(6)打开第二母线上的第二双断口隔离开关，第二双断口隔离开关中间接地端接地；(6) Turn on the second double-break isolating switch on the second bus, and the middle ground terminal of the second double-break isolating switch is grounded;
(7)闭合第一母线上的第一双断口隔离开关，第一双断口隔离开关中间接地端处于分位；(7) Close the first double-break isolating switch on the first bus bar, and the middle ground terminal of the first double-break isolating switch is in the position;
(8)在第一间隔设备引出线间隔出线侧施加运行电压，在第二间隔设备引出线间隔出线侧施加试验电压，对第二双断口隔离开关检测一端检测；在第二间隔设备引出线间隔出线侧施加试验电压，在第二间隔设备引出线间隔出线侧施加运行电压，对第二双断口隔离开关检测另一端检测。(8) Apply operating voltage on the outlet side of the lead-out line of the first compartment, apply test voltage on the lead-out side of the lead-out compartment of the second compartment, and test one end of the second double-break isolating switch; at the lead-out side of the second compartment The test voltage is applied to the outlet side, and the operating voltage is applied to the outlet side of the second interval device's outlet interval, and the second double-break isolating switch is detected at the other end.
本发明在220千伏变电站的一期工程中完成双母线及备用间隔出线(远期工程)的双断口母线隔离开关施工，利用双断口母线隔离开关交替通断，在双母线施加电压完成对双断口母线隔离开关电器的检测，检测环境和状态相同，对双断口母线隔离开关电器检测评价口径一致，检测结果真实反映一期工程的状况。特别通过的一期工程已完成的至少两个间隔间隔引出线进行加压，便于加压设备的连接。The invention completes the construction of the double-break bus isolating switch for the double bus and the spare compartment outlet (long-term project) in the first phase of the 220 kV substation. The double-break bus isolating switch is alternately switched on and off, and the voltage is applied to the double bus to complete the double The detection environment and status of the broken bus disconnecting switch electrical appliances are the same. The detection and evaluation calibers of the double broken bus disconnecting switch electrical appliances are the same, and the detection results truly reflect the status of the first phase of the project. In particular, the first phase of the project has been completed at least two spaced lead wires for pressurization, which is convenient for the connection of pressurizing equipment.
附图说明Description of the drawings
图1 220千伏双断口母线隔离开关电路结构示意图。Figure 1 Schematic diagram of the circuit structure of a 220kV double-break bus isolation switch.
图2测试加压装置原理示意图Figure 2 Schematic diagram of the principle of the test pressure device
图3测试加压过程示意图。Figure 3 Schematic diagram of the test pressurization process.
具体实施方式Detailed ways
下列具体实施方式用于对本发明权利要求技术方案的解释，以便本领域的技术人员理解本权利要求书。本发明的保护范围不限于下列具体的实施结构。本领域的技术人员做出的包含有本发明权利要求书技术方案而不同于下列具体实施方式的也是本发明的保护范围。The following specific embodiments are used to explain the technical solutions of the claims of the present invention, so that those skilled in the art can understand the claims. The protection scope of the present invention is not limited to the following specific implementation structures. Those skilled in the art that include the technical solutions of the claims of the present invention and are different from the following specific embodiments are also within the protection scope of the present invention.
如图1所示，它是一期工程已经建设完成的220千伏变电站的配电装置部分示意图，包括220千伏的第一母线Ⅰ和220千伏的第二母线Ⅱ；已经完成建设的设备至少包括第一间隔设备引出线1，第二间隔设备引出线2；第一母线Ⅰ和第二母线Ⅱ之间连接有双断口母线隔离开关；本实施例中第一母线Ⅰ上连接双断口母线隔离开关的第一双断口隔离开关DDS1的第一端，第二母线Ⅱ上连接双断口母线隔离开关的第二双断口隔离开关DDS2的第一端；即双断口母线隔离开关母线侧的连接。第一双断口隔离开关DDS1的第二端与第二双断口隔离开关DDS2的第二端连接，即备用线引出线侧的连接，备用线引出线侧连接断路器CB。图中备用出线为虚线，表示是尚未建设的二期工程。As shown in Figure 1, it is a partial schematic diagram of the power distribution device of the 220kV substation that has been completed in the first phase of the project, including the 220kV first busbar I and the 220kV second busbar II; the equipment has been completed It includes at least the lead wire 1 of the first partition device and the lead wire 2 of the second partition device; a double-break bus disconnect switch is connected between the first bus bar I and the second bus bar II; the double-break bus bar is connected to the first bus bar I in this embodiment The first end of the first double-break isolating switch DDS1 of the isolating switch and the first end of the second double-break isolating switch DDS2 of the double-break bus isolating switch are connected to the second bus bar II; that is, the connection on the bus side of the double-break bus isolating switch. The second end of the first double-break isolating switch DDS1 is connected to the second end of the second double-break isolating switch DDS2, that is, the connection on the outlet side of the spare line, and the outlet side of the spare line is connected to the circuit breaker CB. The spare outlet line in the figure is a dashed line, indicating that it is the second phase of the project that has not yet been constructed.
双断口母线隔离开关实施检测用的电压施加装置原理如图2所示，包括变频控制器FC，励磁变压器Tr，高压电感器L，试品电容Cx，测量分压器C1,C2。上述加压装置为现有常规测试电压加压装置。The principle of the voltage application device used for the detection of the double-break bus isolation switch is shown in Figure 2. It includes the frequency conversion controller FC, the excitation transformer Tr, the high-voltage inductor L, the test capacitor Cx, and the measuring voltage divider C1, C2. The above-mentioned pressurizing device is an existing conventional test voltage pressurizing device.
将两套电压加压装置分别与第一间隔设备引出线1和第二间隔设备引出线2出线套管处连接。Connect the two sets of voltage pressurizing devices to the outlet bushings of the first spacer device lead wire 1 and the second spacer device lead wire 2 respectively.
试验电源取自配电设备室检修箱，选用大于100A的开关，电源选取留有足够裕度，保障用电安全。The test power supply is taken from the maintenance box of the power distribution equipment room, and a switch larger than 100A is selected. The power supply is selected with sufficient margin to ensure the safety of electricity.
对双断口母线隔离开关的测试过程如下：The test process of the double-break bus disconnect switch is as follows:
(1)闭合第一间隔设备引出线间隔的1第一断路器及第一母线第一单断口隔离开关DDS3，将第二母线第二单断口隔离开关DS4处于分位；(1) Close the 1 first circuit breaker and the first single-break isolating switch DDS3 of the first busbar, and the second single-break isolating switch DS4 of the second busbar in the position;
(2)闭合第二间隔设备引出线间隔的第二断路器及第二母线第四单断口隔离开关DS6，将第二母线第三单断口隔离开关DDS5处于分位；(2) Close the second circuit breaker and the fourth single-break isolating switch DS6 of the second bus bar and the third single-break isolating switch DDS5 of the second bus bar in the position;
(3)闭合第二母线上的第二双断口隔离开关DDS2，第二双断口隔离开关中间接地端处于分位；(3) Close the second double-break isolating switch DDS2 on the second bus, and the middle ground terminal of the second double-break isolating switch is in the position;
(4)打开第一母线上的第一双断口隔离开关DDS1，第一双断口隔离开关中间接地端接地；(4) Turn on the first double-break isolating switch DDS1 on the first bus, and the middle ground terminal of the first double-break isolating switch is grounded;
(5)在第一间隔设备引出线间隔出线侧施加运行电压，在第二间隔设备引出线间隔出线侧施加试验电压，对第一双断口隔离开关检测一端检测；在第一间隔设备引出线间隔出线侧施加试验电压，在第二间隔设备引出线间隔出线侧施加运行电压，对第一双断口隔离开关检测另一端检测；(5) Apply operating voltage to the outlet side of the lead-out line of the first compartment, and apply a test voltage to the lead-out side of the second compartment. Apply a test voltage on the outlet side, apply an operating voltage on the outlet side of the second interval device's outlet interval, and detect the other end of the first double-break isolating switch;
(6)打开第二母线上的第二双断口隔离开关DDS2，第二双断口隔离开关中间接地端接地；(6) Turn on the second double-break isolating switch DDS2 on the second bus, and the middle ground terminal of the second double-break isolating switch is grounded;
(7)闭合第一母线上的第一双断口隔离开关DDS1，第一双断口隔离开关中间接地端处于分位；(7) Close the first double-break isolating switch DDS1 on the first bus, and the middle ground terminal of the first double-break isolating switch is in the position;
(8)在第一间隔设备引出线间隔出线侧施加运行电压，在第二间隔设备引出线间隔出线侧施加试验电压，对第二双断口隔离开关检测一端检测；在第二间隔设备引出线间隔出线侧施加试验电压，在第二间隔设备引出线间隔出线侧施加运行电压，对第二双断口隔离开关检测另一端检测。(8) Apply operating voltage on the outlet side of the lead-out line of the first compartment, apply test voltage on the lead-out side of the lead-out compartment of the second compartment, and test one end of the second double-break isolating switch; at the lead-out side of the second compartment The test voltage is applied to the outlet side, and the operating voltage is applied to the outlet side of the second interval device's outlet interval, and the second double-break isolating switch is detected at the other end.
试验电压的施加过程如图3所示。The application process of the test voltage is shown in Figure 3.
上述步骤顺序不是唯一的，基于本发明技术方案，根据现场情况可以调整上述步骤顺序。The sequence of the above steps is not unique. Based on the technical solution of the present invention, the sequence of the above steps can be adjusted according to site conditions.
上述过程对一期工程完成建设的双断口母线隔离开关的母线侧和备用线引出线侧均实现老练试验、交流电压耐受试验和局部放电试验。The above process realizes the burn-in test, the AC voltage withstand test and the partial discharge test on the bus side and the backup line side of the double-break bus isolating switch completed in the first phase of the project.

Claims (5)

  1. 一种220千伏变电组合电器设备中双断口母线隔离开关的检测方法，它包括第一母线，第二母线；第一母线上连接双断口母线隔离开关的第一双断口隔离开关的第一端，第二母线上连接双断口母线隔离开关的第二双断口隔离开关的第一端，第一双断口隔离开关的第二端与第二双断口隔离开关的第二端连接，其特征是对双断口母线隔离开关检测为：闭合双断口母线隔离开关中的一个开关，对第一母线和第二母线分别施加电压，对另一个未闭合的双断口母线隔离开关的两端分别检测后，再交换双断口母线隔离开关开闭合关系，重复上述施加电压过程，完成双断口母线隔离开关的检测。A detection method for a double-break bus isolating switch in 220 kV substation combined electrical equipment, which comprises a first bus and a second bus; the first bus is connected to the first double-break isolating switch of the double-break bus isolating switch The second bus bar is connected to the first end of the second double-break isolating switch of the double-break bus isolating switch, and the second end of the first double-break isolating switch is connected to the second end of the second double-break isolating switch, which is characterized by The detection of the double-break bus isolating switch is: closing one of the double-break bus isolating switches, applying voltage to the first bus and the second bus respectively, and detecting the two ends of the other unclosed double-break bus isolating switch, Then exchange the open-close relationship of the double-break bus disconnect switch, repeat the above voltage application process, and complete the detection of the double-break bus disconnect switch.
  2. 如权利要求1所述220千伏变电组合电器设备中双断口母线隔离开关的检测方法，其特征是：它还包括第一母线和第二母线之间至少连接有第一间隔设备引出线，第二间隔设备引出线，所述对第一母线和第二母线分别施加电压是分别通过第一间隔设备引出线，第二间隔设备引出线实施的。According to claim 1, the detection method of the double-break bus isolating switch in the 220 kV substation combined electrical equipment is characterized in that: it also includes at least a first spacer device lead wire connected between the first bus and the second bus, The second spacing device leads, and the voltages applied to the first bus bar and the second bus bar are respectively implemented through the first spacing device lead wires and the second spacing device lead wires.
  3. 如权利要求1或2所述220千伏变电组合电器设备中双断口母线隔离开关的检测方法，其特征是，所述施加电压是对一个母线施加运行电压，对另一母线施加试验电压。According to claim 1 or 2, the detection method of double-break bus isolation switch in 220 kV substation combined electrical equipment is characterized in that the applied voltage is applying operating voltage to one bus and applying test voltage to the other bus.
  4. 如权利要求1或2所述220千伏变电组合电器设备中双断口母线隔离开关的检测方法，其特征是：所述施加电压过程包括老练试验加压过程，交流电压耐受试验加压过程或局部放电试验加压过程中的一种或几种。As claimed in claim 1 or 2, the detection method of double-break bus disconnect switch in 220 kV substation combined electrical equipment, characterized in that: the voltage application process includes a burn-in test pressurization process, an AC voltage endurance test pressurization process Or one or more of the partial discharge tests during the pressurization process.
  5. 如权利要求2所述220千伏变电组合电器设备中双断口母线隔离开关的检测方法，其特征是：As claimed in claim 2, the detection method of the double-break bus isolation switch in the 220kV substation combined electrical equipment is characterized in that:
    (1)闭合第一间隔设备引出线间隔的第一断路器及第一母线第一单断口隔离开关，将第二母线第二单断口隔离开关处于分位；(1) Close the first circuit breaker and the first single-break isolating switch of the first bus bar, and the second single-break isolating switch of the second bus bar is in position;
    (2)闭合第二间隔设备引出线间隔的第二断路器及第二母线第四单断口隔离开关，将第二母线第三单断口隔离开关处于分位；(2) Close the second circuit breaker and the fourth single-break isolating switch of the second busbar of the second compartment equipment lead-out interval, and the third single-break isolating switch of the second busbar is in position;
    (3)闭合第二母线上的第二双断口隔离开关，第二双断口隔离开关中间接地端处于分位；(3) Close the second double-break isolating switch on the second bus, and the middle ground terminal of the second double-break isolating switch is in the position;
    (4)打开第一母线上的第一双断口隔离开关，第一双断口隔离开关中间接地端接地；(4) Turn on the first double-break isolating switch on the first bus, and the middle ground terminal of the first double-break isolating switch is grounded;
    (5)在第一间隔设备引出线间隔出线侧施加运行电压，在第二间隔设备引出线间 隔出线侧施加试验电压，对第一双断口隔离开关检测一端检测；在第一间隔设备引出线间隔出线侧施加试验电压，在第二间隔设备引出线间隔出线侧施加运行电压，对第一双断口隔离开关检测另一端检测；(5) Apply operating voltage to the outlet side of the lead-out line of the first compartment, and apply a test voltage to the lead-out side of the second compartment. Apply a test voltage on the outlet side, apply an operating voltage on the outlet side of the second interval device's outlet interval, and detect the other end of the first double-break isolating switch;
    (6)打开第二母线上的第二双断口隔离开关，第二双断口隔离开关中间接地端接地；(6) Turn on the second double-break isolating switch on the second bus, and the middle ground terminal of the second double-break isolating switch is grounded;
    (7)闭合第一母线上的第一双断口隔离开关，第一双断口隔离开关中间接地端处于分位；(7) Close the first double-break isolating switch on the first bus bar, and the middle ground terminal of the first double-break isolating switch is in the position;
    (8)在第一间隔设备引出线间隔出线侧施加运行电压，在第二间隔设备引出线间隔出线侧施加试验电压，对第二双断口隔离开关检测一端检测；在第二间隔设备引出线间隔出线侧施加试验电压，在第二间隔设备引出线间隔出线侧施加运行电压，对第二双断口隔离开关检测另一端检测。(8) Apply operating voltage on the outlet side of the lead-out line of the first compartment, apply test voltage on the lead-out side of the lead-out compartment of the second compartment, and test one end of the second double-break isolating switch; at the lead-out side of the second compartment The test voltage is applied to the outlet side, and the operating voltage is applied to the outlet side of the second interval device's outlet interval, and the second double-break isolating switch is detected at the other end.
PCT/CN2021/075959 2020-03-05 2021-02-08 Testing method for double-fracture busbar disconnector in 220-kilovolt power transformation combined electrical device WO2021175107A1 (en)

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