WO2014090206A2 - 智能在线防误保护系统 - Google Patents

智能在线防误保护系统 Download PDF

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Publication number
WO2014090206A2
WO2014090206A2 PCT/CN2014/000150 CN2014000150W WO2014090206A2 WO 2014090206 A2 WO2014090206 A2 WO 2014090206A2 CN 2014000150 W CN2014000150 W CN 2014000150W WO 2014090206 A2 WO2014090206 A2 WO 2014090206A2
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WO
WIPO (PCT)
Prior art keywords
latch
switch
intelligent controller
locking device
protection system
Prior art date
Application number
PCT/CN2014/000150
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English (en)
French (fr)
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WO2014090206A3 (zh
Inventor
许天浩
Original Assignee
Xu Tianhao
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Publication date
Application filed by Xu Tianhao filed Critical Xu Tianhao
Publication of WO2014090206A2 publication Critical patent/WO2014090206A2/zh
Publication of WO2014090206A3 publication Critical patent/WO2014090206A3/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/306—Accessories, e.g. windows
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/127—Withdrawal mechanism
    • H02B11/133—Withdrawal mechanism with interlock
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect

Definitions

  • the object of the present invention is to develop an intelligent online anti-missing protection system for the above-mentioned defects of the mechanical interlocking anti-miss device, so as to completely solve the above defects and ensure the safe production of the electric power enterprise.
  • the invention can replace the mechanical interlocking anti-misoperation device, and can also be used together with it as a backup protection to compensate for the shortage of the mechanical interlocking anti-misoperation device.
  • the invention mainly comprises an intelligent controller, a switch handcart locker, a door latch (1-n), a ground knife locker, a high-voltage live sensor and a display, and the intelligent controller is respectively connected to the switch handcart locker by a line.
  • the door latch, the ground knife latch, the high voltage live sensor and the display are connected.
  • the above components are installed in the proper position of the switch cabinet, and the position detecting unit is installed inside each component, and the status signals of various parts of the switch cabinet are transmitted to the intelligent controller through the line in real time for real-time data exchange.
  • the real-time arithmetic processing by the intelligent controller transmits the control signal to the control circuit of each latch through the line, so that the actuators of the respective latches perform corresponding actions to complete the unlocking operation.
  • the corresponding lock is unlocked to enable the operation; otherwise, the lockout prevents the operation from proceeding. This effectively avoids safety production accidents caused by misuse.
  • the advantages of the invention are good, and the operation behavior of the operator can be continuously monitored online. It is automatically unlocked when it is operated correctly, and automatically locked when it is wrongly operated, effectively preventing misoperation and ensuring safe production of electricity; 2. Simple and convenient operation and strong practicability. It can be simply trained, without any tools, reducing the workload and work intensity of the operator, improving the operation efficiency, and facilitating emergency operations in emergency situations. 3. Safe and reliable, low failure rate.
  • the self-forming system of the invention adopts a power supply of 36v or less, is safe and reliable, and has no serious mechanical wear of the mechanical interlocking anti-misoperation device, so the failure rate is low.
  • the figure is a schematic view of the structure of the present invention. detailed description
  • the invention is mainly composed of an intelligent controller 1, a switch handcart locker 2, a door locker 3, a ground knife locker 4, a high voltage live sensor 5 and a display 6.
  • the intelligent controller 1 is connected to the switch handcart locker 2, the door locker 3, the ground knife locker 4, the high voltage live sensor 5 and the display 6 through the line.
  • the intelligent controller 1 is used for storing, computing, and displaying the status information of each component, and the switch handcart locker 2 is used to unlock the lock switch handcart and the detection switch handcart position state, and the door locker 3 is used to unlock the lock load side.
  • the position of the cabinet door and the detection cabinet door, the ground knife locker 4 is used for unblocking the ground knife and detecting the closing state of the ground knife, the high voltage charging sensor 5 is used for detecting the presence or absence of the high voltage state, and the high voltage live display 6 is used for displaying Whether it is powered.
  • Intelligent controller 1 switch handcart locker 2, door locker 3, ground knife locker 4, high-voltage live sensor 5 and display 6 installed in the same switch cabinet.
  • the intelligent controller 1, the switch handcart locker 2 are all installed at the appropriate position on the front of the switchgear cabinet, the cabinet door locker 3 is installed at the appropriate position of the load side cabinet door, and the ground knife locker 4 is installed at the appropriate position of the ground knife operating mechanism.
  • the high-voltage live sensor 5 is mounted on the load side busbar, and the high-voltage live display 6 is installed at the appropriate position on the back of the switchgear.
  • the power supply used in the system can be powered by DC power or AC power in the switchgear, and can also be powered by the power module (DC5-450V). As long as the parameters such as the power supply voltage and frequency used are matched with the technical parameters required by the above-mentioned respective latches, controllers, displays, and the like.
  • Embodiment 1 to solve the safety hazards 1 and 2 in the background art of the present specification solution
  • the switch hand truck when an operator needs to perform an electric inspection, the switch hand truck must first be pulled out of the working position to the test position or outside.
  • the position detecting unit built in the switch handcart locker 2 detects the switch.
  • the position status information of the handcart is transmitted to the input of the intelligent controller 1 through the line in the form of an electrical signal.
  • the high-voltage charging sensor 5 uploads the sensed electric signal through the line, and uploads it to the high-voltage live display 6 for displaying whether the load side is energized to remind the operator to pay attention; the other way is uploaded to the intelligent controller 1 for the intelligent controller. 1 for arithmetic processing.
  • the intelligent controller 1 automatically reads all the uploaded signal data, performs arithmetic processing, and compares the operation result data with the pre-stored lockout deblocking target value range, when the result data is in the unlock target value range.
  • the unlock command signal is issued, otherwise the lock command signal will be issued in the range of the lock target value.
  • the intelligent controller 1 An unlocking command signal is sent to the two latches, and is sent to the circuit of the door latch 3 through the output end of the intelligent controller 1 and the line, so that the actuator of the door latch 3 is unlocked, and the door latch is closed. 3 is then unlocked, allowing the operator to open the load side door inspection, this is It avoids the inspection method of the original mechanical interlocking anti-misoperation device and must open the inspection method of the insulating baffle, thus eliminating the safety hazard of accidental electric shock.
  • the unlocking command signal sent by the other intelligent controller 1 is sent to the circuit of the ground knife latch 4 through the output end and the line of the intelligent controller 1, so that the actuator performs the unlocking action, and the ground knife latch 4 is immediately unlocked. At this point, the operator is allowed to perform an ungrounded knife operation. On the contrary, if the electric signal is detected by the high-voltage charging sensor 5, the result data of the intelligent controller operation processing will be in the range of the blocking target value of the cabinet door latch 3 and the ground knife latch 4, so the smart controller 1 goes to this
  • the two latches send a blocking command signal, which is transmitted to the door latch 3 through its output end and line to ensure reliable locking, preventing the operator from entering the charging interval and causing personal electric shock safety accident.
  • the other blocking command signal is transmitted to the ground knife locker 4 through its output end and the line to make it reliably locked, so that the erroneous operation of the live grounding knife cannot be performed, which effectively prevents the occurrence of a safety accident of the charged grounding knife. Therefore, the invention can completely eliminate the existing accidental electric shock of the mechanical interlocking anti-missing device, the accidental charging interval, the safety hazard of the charged grounding knife, and ensure the safe production of the electric power enterprise.
  • Embodiment 2 Solution for solving the security risk in the background art of the present specification 3
  • the invention When someone is working in the load side cabinet door, the invention will reliably lock the switch hand truck so that it cannot be pushed into the working position to transmit electricity, thereby ensuring the personal safety of the operator.
  • the door locker 3 installed on the load side cabinet door detects the position status information of the cabinet door and uploads it to the intelligent controller through the line.
  • the intelligent controller 1 automatically reads the uploaded signal data, performs arithmetic processing, and stores the operation result data with pre-stored
  • the range of the target value of the lockout is compared for comparison.
  • an unlock command signal is issued, otherwise a lockout command signal is issued in the range of the lock target value.
  • the result data of the arithmetic processing of the intelligent controller 1 will be in the range of the blocking target value of the switch handcart locker 2, so the intelligent controller 1 issues a lockout command signal to the switch handcart locker 2, and the signal passes through the intelligent controller 1
  • the output end and the line are sent to the circuit of the switch handcart locker 2, so that the actuator is locked, so that it can be reliably locked, and the switch handcart cannot be pushed into the working position for power transmission operation, thereby effectively avoiding the mechanical connection.
  • the lock anti-miss device "when someone is working on the load side of the switchgear, it can still put the switch into the working position to send electricity, resulting in the safety hazard of personal electric shock", ensuring the safe production of electric power enterprises.
  • the invention can completely eliminate the existing hidden dangers such as accidental electric shock, accidental charging interval, and charged grounding knife of the mechanical interlocking anti-misoperation device, and can continuously detect the operation behavior of the operator on line, and prevent the occurrence of misoperation accidents. To ensure the safe production of power companies, it also has the advantages of good use, easy operation, safety and reliability. It can be used alone or as a backup protection for mechanical interlocking anti-misoperation devices. The application prospect is very broad.

Abstract

本发明主要由智能控制器、开关手车闭锁器、柜门闭锁器、地刀闭锁器、高压带电传感器和显示器所组成，智能控制器通过线路分别于开关手车闭锁器、柜门闭锁器、地刀闭锁器、高压带电传感器和显示器相连接。本发明可以彻底排除机械联锁防误装置现存的误触电、误入带电间隔、带电合地刀等安全隐患，能在线连续检测操作人员的操作行为，防止误操作事故的发生，确保电力企业的安全生产，还具有使用效果好、操作简便、安全可靠等优点，既可以单独使用，也可以作为机械联锁防误装置的后备保护使用，应用前景非常广阔。

Description

智能在线防误保护系统
技术领域
电力高低压开关柜设备中防止误操作技术领域。
背景技术
目前我国电力系统普遍采用的高低压幵关柜， 无论是国内生产 的、还是国外品牌的， 都普遍采用机械联锁来防止误操作。虽然在一 定程度上能够防止部分误操作的发生，但并不完备。存在如下安全隐 患： 1. 由于采用 "地刀不合不能打开负荷侧柜门"的机械联锁方式， 导致电气运行人员在验电时， 必须手动打开绝缘挡板方可验电的情 况， 这就存在严重的误触电安全隐患； 2.当某些开关柜作为电源柜使 用时，现场往往将"地刀不合不能打开负荷侧柜门"的机械联锁拆除， 以防止带电合地刀，但这样就带来了新的安全隐患，即误入带电间隔； 3.当有人在开关柜负荷侧作业时， 仍能将开关投入工作位置送电， 导 致人身触电的安全隐患； 4.操作繁琐， 给电气运行人员带来不必要的 工作量， 降低了工作效率， 甚至延误特殊情况时的紧急操作， 影响安 全生产； 5.机械磨损导致防误功能失效，而引发误操作导致人身伤亡、 设备损毁、 停机、 停电等安全生产事故频繁不断。
发明内容
本发明的目的：就是针对机械联锁防误装置所存在的上述缺陷而 研发的一套智能在线防误保护系统， 以彻底解决上述缺陷，确保电力 企业的安全生产。本发明既可以替代机械联锁防误装置， 也可以与之 共同使用，作为它的后备保护使用，以弥补机械联锁防误装置的不足， 形成独特的二级防误保护系统， 保障电力企业安全生产。
技术方案
本发明主要由智能控制器、 开关手车闭锁器、 柜门闭锁器 （1-n 个）、 地刀闭锁器、 高压带电传感器和显示器所组成， 智能控制器通 过线路分别于开关手车闭锁器、柜门闭锁器、地刀闭锁器、高压带电 传感器和显示器相连接。
上述部件安装在开关柜的适当位置，同时各部件内部均装设有位 置检测单元，将开关柜的各部位状态信号实时通过线路传输给智能控 制器，进行实时数据交换。 由智能控制器进行实时运算处理后再通过 线路将控制信号传输给各闭锁器的控制电路，使各闭锁器的执行机构 进行相应动作来完成解闭锁动作。当操作人员正确操作时，相应的闭 锁器解锁， 使操作能够进行； 否则， 闭锁使操作无法进行。从而有效 避免了由于误操作而引发的安全生产事故。
本发明的优点： 1.使用效果好， 可在线连续监测操作人员的操作 行为。正确操作时自动解锁， 错误操作时自动闭锁， 有效地杜绝了误 操作， 保障电力安全生产； 2.操作简单方便， 实用性强。 只需简单培 训即可， 操作时不带任何工具， 减少操作人员的工作量和工作强度， 提高操作效率，便于紧急情况下的应急操作； 3.安全可靠，故障率低。 本发明自成系统， 采用 36v以下电源供电， 安全可靠， 同时不存在机 械联锁防误装置的机械磨损严重的问题， 因此故障率低。
附图说明
图为本发明的结构示意图。 具体实施方式
下面结合附图和实施例对本发明作进一步的说明。
如图示， 本发明主要由智能控制器 1、 开关手车闭锁器 2、 柜门 闭锁器 3、 地刀闭锁器 4、 高压带电传感器 5和显示器 6所组成。 智 能控制器 1通过线路分别于开关手车闭锁器 2、 柜门闭锁器 3、 地刀 闭锁器 4、 高压带电传感器 5和显示器 6相连接。
其中智能控制器 1用于存储、 运算处理、 显示各部件状态信息， 开关手车闭锁器 2用于解闭锁开关手车和检测开关手车位置状态，柜 门闭锁器 3用于解闭锁负荷侧柜门和检测柜门位置状态，地刀闭锁器 4用于解闭锁地刀和检测地刀分合闸状态， 高压带电传感器 5用于检 测有无高压电状态， 高压带电显示器 6用于显示是否带电状态。
智能控制器 1、开关手车闭锁器 2、柜门闭锁器 3、地刀闭锁器 4、 高压带电传感器 5和显示器 6安装在同一开关柜体内。智能控制器 1、 开关手车闭锁器 2均安装在开关柜正面适当位置，柜门闭锁器 3安装 在负荷侧柜门适当位置处，地刀闭锁器 4安装在地刀操作机构的适当 位置处， 高压带电传感器 5安装在负荷侧母线处， 高压带电显示器 6 安装在开关柜背面适当位置处。
系统所使用的电源可以采用开关柜内自带的直流电源或交流电 源， 同时也可采用电源模块（DC5-450V) 供电。 只要所采用的电源 电压、频率等参数与上述各闭锁器、控制器、显示器等单元所要求的 技术参数相匹配即可。
实施例 1、 为解决本说明书背景技术中安全隐患 1、 2所提出的 解决方案
当操作人员需要对负荷侧母线验电时，无需打开其绝缘挡板，只 要将开关手车拉出试验位置及以外，再到幵关柜后面査看高压带电显 示器 6的显示状态，确认负荷侧处于无电状态， 即可打开负荷侧柜门 进行验电操作，这就避免了原来验电必须手动打幵绝缘挡板的验电方 式， 也就排除了操作人员误触电和误入带电间隔的安全隐患。
具体实施方式， 如图示， 当操作人员需要验电时， 要先将开关手 车拉出工作位置至试验位置或以外，此时，开关手车闭锁器 2内置的 位置检测单元会检测到开关手车的位置状态信息，并以电信号的形式 通过线路输送到智能控制器 1的输入端。同时高压带电传感器 5会将 感应到的电信号通过线路上传， 一路上传至高压带电显示器 6， 用于 显示负荷侧是否带电，提醒操作人员注意； 另一路上传至智能控制器 1， 供智能控制器 1进行运算处理之用。 此时， 智能控制器 1会自动 读取上传来的所有信号数据，进行运算处理， 并将运算结果数据与预 先存储的各闭锁器解闭锁目标值范围进行比较，当结果数据在解锁目 标值范围内时， 发出解锁指令信号，否则在闭锁目标值范围将发出闭 锁指令信号。 此时如果通过高压带电传感器 5检测到的是无电信号， 智能控制器 1运算处理的结果数据将在柜门闭锁器 3和地刀闭锁器 4 的解锁目标值范围内，故智能控制器 1向这两个闭锁器发出解锁指令 信号，一路通过智能控制器 1的输出端和线路输送至柜门闭锁器 3的 电路中，使柜门闭锁器 3的执行机构进行解锁动作，柜门闭锁器 3随 即处于解锁状态，此时允许操作人员进行打开负荷侧柜门验电，这就 避免了原来机械联锁防误装置的验电必须打开绝缘挡板的验电方式， 也就排除了误触电的安全隐患。另一路智能控制器 1发出的解锁指令 信号通过智能控制器 1 的输出端和线路输送至地刀闭锁器 4的电路 中， 使其执行机构进行解锁动作， 地刀闭锁器 4随即处于解锁状态， 此时允许操作人员进行无电合地刀操作。相反如果通过高压带电传感 器 5检测到的是有电信号，智能控制器〗运算处理的结果数据将在柜 门闭锁器 3和地刀闭锁器 4的闭锁目标值范围，故智能控制器 1向这 两个闭锁器发出闭锁指令信号，一路经其输出端和线路传输至柜门闭 锁器 3， 使其可靠闭锁， 防止操作人员误入带电间隔， 造成人身触电 安全事故。另一路闭锁指令信号经其输出端和线路传输至地刀闭锁器 4， 使其可靠闭锁， 使带电合地刀的误操作无法进行， 这就有效制止 了带电合地刀安全事故的发生。因此，本发明可以完全排除机械联锁 防误装置现存的误触电、误入带电间隔、带电合地刀的安全隐患， 确 保电力企业的安全生产。
实施例 2、 为解决本说明书背景技术中安全隐患 3所提出的解决 方案
当有人在负荷侧柜门内作业时，本发明将可靠闭锁开关手车，使 其无法推入工作位置送电， 保障作业人员人身安全。
具体实施方式， 如图示， 当有人在负荷侧柜门内作业时， 安装在 负荷侧柜门上的柜门闭锁器 3会检测到柜门的位置状态信息，并通过 线路上传至智能控制器 1的输入端，此时，智能控制器 1会自动读取 上传来的信号数据，进行运算处理， 并将运算结果数据与预先存储的 解闭锁目标值范围进行比较， 当结果数据在解锁目标值范围内时，发 出解锁指令信号，否则在闭锁目标值范围将发出闭锁指令信号。此时 智能控制器 1运算处理的结果数据将在开关手车闭锁器 2的闭锁目标 值范围，故智能控制器 1向开关手车闭锁器 2发出闭锁指令信号，该 信号通过智能控制器 1的输出端和线路输送至开关手车闭锁器 2的电 路中， 使其执行机构进行闭锁动作， 使其可靠闭锁， 无法将开关手车 推入工作位置进行送电操作， 这就有效避免了机械联锁防误装置的 "当有人在开关柜负荷侧作业时，仍能将开关投入工作位置送电，导 致人身触电的安全隐患"的发生， 保证了电力企业的安全生产。
综上所述， 本发明可以彻底排除机械联锁防误装置现存的误触 电、误入带电间隔、带电合地刀等安全隐患， 能在线连续检测操作人 员的操作行为， 防止误操作事故的发生， 确保电力企业的安全生产， 还具有使用效果好、 操作简便、 安全可靠等优点， 既可以单独使用， 也可以作为机械联锁防误装置的后备保护使用， 应用前景非常广阔。

Claims

WO 2014/090206 权利要求书 PCT/CN2014/000150
1、 一种防止电气误操作的智能在线防误保护系统， 主要由智 能控制器、开关手车闭锁器、柜门闭锁器（1-n个)、地刀闭锁器、 高 压带电传感器和显示器所组成，其特征在于：智能控制器通过线路分 别于开关手车闭锁器、柜门闭锁器、地刀闭锁器、高压带电传感器和 显示器相连接。
2、 按权利要求 1所述的智能在线防误保护系统，其特征在于: 所述的智能控制器、 开关手车闭锁器、柜门闭锁器、地刀闭锁器、 高 压带电传感器和显示器安装在同一开关柜体内。
3、 按权利要求 1所述的智能在线防误保护系统，其特征在于: 各闭锁器内部均具有控制、 显示电路和位置检测单元。
4、 按权利要求 1所述的智能在线防误保护系统，其特征在于: 智能控制器内部具有存储、 运算处理、 显示单元。
5、 按权利要求 1所述的智能在线防误保护系统，其特征在于: 系统所使用的电源可以采用开关柜内自带的直流电源或交流电源，同 时也可采用电源模块（DC5-450V)供电。 只要所采用的电源电压、 频率等参数与上述各闭锁器、控制器、显示器等单元所要求的技术参 数相匹配即可。
PCT/CN2014/000150 2012-12-13 2014-02-12 智能在线防误保护系统 WO2014090206A2 (zh)

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