CN107181243B - a control switch - Google Patents

a control switch Download PDF

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Publication number
CN107181243B
CN107181243B CN201710457266.2A CN201710457266A CN107181243B CN 107181243 B CN107181243 B CN 107181243B CN 201710457266 A CN201710457266 A CN 201710457266A CN 107181243 B CN107181243 B CN 107181243B
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Prior art keywords
switch
manual emergency
accident
signal
grid
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CN107181243A (en
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田丰
谢洪杰
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BEIJING GAOJING CO-GENERATION POWER PLANT OF DATANG INTERNATIONAL POWER GENERATION Co Ltd
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BEIJING GAOJING CO-GENERATION POWER PLANT OF DATANG INTERNATIONAL POWER GENERATION Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of DC component by short circuits in AC networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Control Of Turbines (AREA)

Abstract

The present invention provides a kind of control switch, comprising: accident protection trip switch unit, the more than one accident protection trip switch with mutual logic or relationship；Manual emergency halt switch unit, more than two manual emergency halt switches with mutual logical AND relationship；Signal transmitting switch is connected between controller and scheduling station system, in an ON state when generating equipment is grid-connected, and is in an off state when generating equipment is not grid-connected；Controller; it is connected with accident protection trip switch unit and manual emergency halt switch unit; in the case where generating equipment is grid-connected; signal or manual emergency stopping signal occurs to scheduling station system transmission failure; in the case where generating equipment is not grid-connected, generates and store accident generation signal or manual emergency stopping signal.Control switch of the invention accurately can send accident to scheduling station system as needed and signal occurs.

Description

一种控制开关a control switch

技术领域technical field

本发明涉及控制开关，具体涉及用于发电厂信号发送的控制开关。The present invention relates to a control switch, in particular to a control switch used for signal transmission in a power plant.

背景技术Background technique

随着发电厂自动化进程的加快，电网调度对发电厂自动化的管理也日趋严格，全面提升及完善发电厂自动化水平迫在眉睫。With the acceleration of the automation process of power plants, the power grid dispatching management of power plant automation is becoming more and more strict, and it is urgent to comprehensively improve and improve the automation level of power plants.

当发电厂侧发电设备发生事故时，事故发生信号必须以一个正确遥信位上送至调度主站系统。若事故发生信号不能正确上传至调度主站系统，则影响事故告警的及时性和电网安全性。When an accident occurs in the power generation equipment on the power plant side, the accident signal must be sent to the dispatching master station system with a correct remote signal bit. If the accident signal cannot be correctly uploaded to the dispatching master station system, it will affect the timeliness of the accident alarm and the security of the power grid.

另一方面，发电厂检修过程中需要对发电设备进行预试，亦即发电设备未并入电网情况下进行传动试验、电气试验等操作，此时不应向调度主站系统发送无关信号。On the other hand, during the maintenance process of the power plant, the power generation equipment needs to be pre-tested, that is, the transmission test, electrical test and other operations should be carried out when the power generation equipment is not integrated into the power grid.

因此，对事故发生信号的上传，需要既能满足电网自动化要求，又能满足发电厂发电设备预试的要求。Therefore, the upload of the accident signal needs to meet the requirements of power grid automation and pre-test requirements of power generation equipment in power plants.

发明内容SUMMARY OF THE INVENTION

发明要解决的问题Invention to solve problem

本发明是为了解决上述问题而提出的，其目的在于提供一种能够根据需要向调度主站系统准确发送事故发生信号的控制开关。The present invention is proposed to solve the above problems, and its purpose is to provide a control switch that can accurately send an accident occurrence signal to the dispatch master station system as required.

用于解决问题的方案solution to the problem

本发明提供的控制开关，包括事故保护跳闸开关单元、手动紧急停机开关单元、信号传输开关以及控制器，其中所述事故保护跳闸开关单元，与发电设备相连，具有相互逻辑或关系的一个以上的事故保护跳闸开关；所述手动紧急停机开关单元，与发电设备相连，具有相互逻辑与关系的两个以上的手动紧急停机开关；所述信号传输开关，连接在所述控制器与调度主站系统之间，在发电设备并网时处于接通状态，而在发电设备未并网时处于断开状态；所述控制器，与所述事故保护跳闸开关单元及所述手动紧急停机开关单元相连，在发电设备并网的情况下，当任意的所述事故保护跳闸开关发生跳闸时，判断为发电设备发生故障而生成事故发生信号，并将该事故发生信号发送至调度主站系统，而当所有的所述手动紧急停机开关被接通时，判断为发生非常情况而生成手动紧急停机信号，并将该手动紧急停机信号发送至调度主站系统，在发电设备未并网的情况下，当任意的所述事故保护跳闸开关发生跳闸或者所有的所述手动紧急停机开关被接通时，生成并存储事故发生信号或者手动紧急停机信号。The control switch provided by the present invention includes an accident protection trip switch unit, a manual emergency stop switch unit, a signal transmission switch and a controller, wherein the accident protection trip switch unit is connected with the power generation equipment and has more than one logical OR relationship with each other. Accident protection trip switch; the manual emergency stop switch unit is connected with the power generation equipment, and has two or more manual emergency stop switches with mutual logic and relationship; the signal transmission switch is connected to the controller and the dispatch master station system When the power generation equipment is connected to the grid, it is in a connected state, and when the power generation equipment is not connected to the grid, it is in a disconnected state; the controller is connected to the accident protection trip switch unit and the manual emergency stop switch unit, In the case of grid-connected power generation equipment, when any of the accident protection trip switches trips, it is determined that the power generation equipment is faulty and an accident occurrence signal is generated, and the accident occurrence signal is sent to the dispatching master station system. When the manual emergency stop switch is turned on, it is judged that an emergency has occurred and a manual emergency stop signal is generated, and the manual emergency stop signal is sent to the dispatching master station system. When the power generation equipment is not connected to the grid, when any When the accident protection trip switch trips or all the manual emergency stop switches are turned on, an accident occurrence signal or a manual emergency stop signal is generated and stored.

优选地，所述发电设备包含汽轮机以及汽轮机发变组。Preferably, the power generation equipment includes a steam turbine and a steam turbine generator-transformer unit.

优选地，所述信号传输开关设置在与所述汽轮机发变组相连的所述事故保护跳闸开关单元的旁边。Preferably, the signal transmission switch is arranged beside the accident protection trip switch unit connected with the steam turbine generator-transformer unit.

优选地，所述信号传输开关为扳把式开关或旋钮式开关。Preferably, the signal transmission switch is a toggle switch or a knob switch.

有益效果beneficial effect

根据本发明的控制开关，能够根据需要向调度主站系统准确发送事故发生信号，既能满足电网自动化要求，又能满足发电厂发电设备预试的要求。According to the control switch of the present invention, an accident occurrence signal can be accurately sent to the dispatching master station system as required, which can not only meet the requirements of power grid automation, but also meet the requirements of pre-testing of power generation equipment in power plants.

附图说明Description of drawings

图1是根据本发明的一实施例所提供的控制开关的构成框图。FIG. 1 is a structural block diagram of a control switch provided according to an embodiment of the present invention.

[附图标记说明][Description of reference numerals]

1000：控制开关 100：事故保护跳闸开关单元1000: Control switch 100: Accident protection trip switch unit

110：事故保护跳闸开关 200：手动紧急停机开关单元110: Accident protection trip switch 200: Manual emergency stop switch unit

210：手动紧急停机开关 300：控制器210: Manual emergency stop switch 300: Controller

400：信号传输开关 500：调度主站系统400: Signal transmission switch 500: Dispatch master station system

600：发电设备600: Power Generation Equipment

具体实施方式Detailed ways

以下，参照附图详细说明根据本发明优选实施例的控制开关。另外，只对理解本发明的技术构成有必要的部分进行说明，对其余部分的说明将会省略，以免使本发明的要义混乱不清，对此应予留意。而且，在此过程中，为了便于说明的明了性和方便性，图中所示的线条的粗细或构成要素的大小及厚度尺寸等可能被夸张图示。Hereinafter, a control switch according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that only the parts necessary for understanding the technical configuration of the present invention will be described, and the description of the remaining parts will be omitted so as not to obscure the gist of the present invention. In addition, in this process, for the sake of clarity and convenience of description, the thickness of lines shown in the drawings, the size and thickness of components, and the like may be exaggerated.

图1是根据本发明的一实施例所提供的控制开关1000的构成框图。FIG. 1 is a structural block diagram of a control switch 1000 provided according to an embodiment of the present invention.

如图1所示，本实施例的控制开关1000包括：事故保护跳闸开关单元100、手动紧急停机开关单元200、控制器300以及信号传输开关400。As shown in FIG. 1 , the control switch 1000 of this embodiment includes: an accident protection trip switch unit 100 , a manual emergency stop switch unit 200 , a controller 300 and a signal transmission switch 400 .

所述事故保护跳闸开关单元100，与发电设备600相连，具有相互逻辑或关系的一个以上的事故保护跳闸开关110。在此，事故保护跳闸开关单元100中可以设置一个以上(可以设置1个，也可以设置2个或更多个)的事故保护跳闸开关110，由于事故保护跳闸开关110之间以逻辑或关系相连，因此当任意一个事故保护跳闸开关110动作而发生跳闸时，与之相连的控制器300都能准确可靠地判断出发电设备600发生故障。The accident protection trip switch unit 100 is connected to the power generation equipment 600 and has more than one accident protection trip switch 110 in a logical OR relationship with each other. Here, the accident protection trip switch unit 100 may be provided with more than one (one or two or more) accident protection trip switches 110, because the accident protection trip switches 110 are connected by a logical OR relationship. Therefore, when any one of the accident protection trip switches 110 is actuated and trips, the controller 300 connected thereto can accurately and reliably determine that the power generation equipment 600 is faulty.

所述手动紧急停机开关单元200，与发电设备600相连，具有相互逻辑与关系的两个以上的手动紧急停机开关210。当发电厂发生火灾等紧急状况(亦即，非常情况)时，可以通过断开手动紧急停机开关单元200的手动紧急停机开关210来人为地紧急停机发电设备600。在此，手动紧急停机开关单元200中可以设置两个以上(可以设置2个，也可以设置3个或更多个)的手动紧急停机开关210，从而即使因误操作而不小心触碰到某一个手动紧急停机开关210，进而使之发生了接通的情况下，与之逻辑与关系的其他手动紧急停机开关210还处于正常状态，因此可以避免发生不必要的损失。The manual emergency shutdown switch unit 200 is connected to the power generating equipment 600 and has two or more manual emergency shutdown switches 210 in a logical AND relationship with each other. When an emergency such as a fire occurs in the power plant (ie, an emergency), the power generation equipment 600 can be manually shut down in an emergency by turning off the manual emergency shutdown switch 210 of the manual emergency shutdown switch unit 200 . Here, two or more (two or three or more) manual emergency stop switches 210 may be provided in the manual emergency stop switch unit 200, so that even if a certain emergency stop switch is accidentally touched due to misoperation When one manual emergency stop switch 210 is turned on, other manual emergency stop switches 210 in a logical AND relationship with it are still in a normal state, so unnecessary losses can be avoided.

所述信号传输开关400，连接在控制器300与调度主站系统500之间，在发电设备600并网的情况下，处于接通状态，而在发电设备600未并网的情况下，处于断开状态。The signal transmission switch 400 is connected between the controller 300 and the dispatching master station system 500. When the power generation equipment 600 is connected to the grid, it is in an on state, and when the power generation equipment 600 is not connected to the grid, it is in an off state. open state.

所述控制器300，与事故保护跳闸开关单元100及手动紧急停机开关单元200相连。在发电设备600并网的情况下(信号传输开关400处于接通状态)，当任意的事故保护跳闸开关110发生跳闸时，控制器300判断为发电设备600发生故障而生成事故发生信号，并将该事故发生信号经由信号传输开关400发送至调度主站系统500，而当所有的手动紧急停机开关210被接通时，控制器300判断为发电厂发生非常情况(如，火灾等)而生成手动紧急停机信号，并将该手动紧急停机信号经由信号传输开关400发送至调度主站系统500。在发电设备600未并网的情况下(信号传输开关400处于断开状态)，当任意的事故保护跳闸开关110发生跳闸时，控制器300生成事故发生信号，由于此时信号传输开关400为断开状态，因此事故发生信号不会被传输至调度主站系统500，而当所有的手动紧急停机开关210被接通时，控制器300生成手动紧急停机信号，由于此时信号传输开关400为断开状态，因此手动紧急停机信号不会被传输至调度主站系统500。在此，所述控制器300可以为工业用计算机等能够实现计算、逻辑判断、存储以及控制等功能的任意的电脑设备，对此不做特别限定。控制器300还可以存储并网及未并网状态下生成的事故发生信号和手动紧急停机信号，以便后台进行分析和研究。The controller 300 is connected with the accident protection trip switch unit 100 and the manual emergency stop switch unit 200 . When the power generation equipment 600 is connected to the grid (the signal transmission switch 400 is in the ON state), when any accident protection trip switch 110 trips, the controller 300 determines that the power generation equipment 600 is faulty and generates an accident occurrence signal, and generates an accident occurrence signal. The accident occurrence signal is sent to the dispatch master station system 500 via the signal transmission switch 400, and when all the manual emergency stop switches 210 are turned on, the controller 300 determines that an emergency (eg, fire, etc.) occurs in the power plant and generates a manual The emergency stop signal is sent to the dispatch master station system 500 via the signal transmission switch 400 . When the power generation equipment 600 is not connected to the grid (the signal transmission switch 400 is in the off state), when any accident protection trip switch 110 trips, the controller 300 generates an accident occurrence signal, because the signal transmission switch 400 is off at this time. Therefore, the accident occurrence signal will not be transmitted to the dispatch master station system 500, and when all the manual emergency stop switches 210 are turned on, the controller 300 generates a manual emergency stop signal, because the signal transmission switch 400 is off at this time. the ON state, so the manual emergency stop signal will not be transmitted to the dispatch master system 500 . Here, the controller 300 may be any computer device such as an industrial computer that can realize functions such as calculation, logical judgment, storage, and control, which is not particularly limited. The controller 300 can also store the accident occurrence signal and the manual emergency stop signal generated in the grid-connected and non-grid-connected states for analysis and research in the background.

在此，信号传输开关400可以设置在与作为发电设备的汽轮机发变组相连的事故保护跳闸开关单元100的旁边，信号传输开关400可以采用扳把式开关或旋钮式开关，从而方便操作人员进行观察及操作。Here, the signal transmission switch 400 can be arranged beside the accident protection trip switch unit 100 connected to the steam turbine generator-transformer unit as the power generation equipment. observe and operate.

以上，对本发明实施例的控制开关1000的构成做了详细说明。接着，具体说明本发明实施例的控制开关1000的工作过程。The structure of the control switch 1000 according to the embodiment of the present invention has been described in detail above. Next, the working process of the control switch 1000 according to the embodiment of the present invention is described in detail.

当发电厂的发电设备(汽轮机及/或汽轮机发变组)600处于并网状态而正常工作时，接通信号传输开关400。若发电设备600发生故障，则与发电设备600相连的事故保护跳闸开关单元100的至少一个事故保护跳闸开关110会跳闸，此时控制器300生成事故发生信号，并将该事故发生信号经由接通状态的信号传输开关400发送至调度主站系统500。若出现发电厂发生火灾等紧急状况，则人为地将手动紧急停机开关单元200的所有手动紧急停机开关210断开，此时控制器300生成手动紧急停机信号，并将该手动紧急停机信号经由接通状态的信号传输开关400发送至调度主站系统500。When the power generation equipment (steam turbine and/or steam turbine generator-transformer unit) 600 of the power plant is in a grid-connected state and works normally, the signal transmission switch 400 is turned on. If the power generation equipment 600 fails, at least one accident protection trip switch 110 of the accident protection trip switch unit 100 connected to the power generation equipment 600 will trip. At this time, the controller 300 generates an accident occurrence signal, and turns the accident occurrence signal on via The status of the signaling switch 400 is sent to the dispatch master system 500 . In the event of an emergency situation such as a fire in the power plant, all manual emergency shutdown switches 210 of the manual emergency shutdown switch unit 200 are manually turned off, and the controller 300 generates a manual emergency shutdown signal at this time, and sends the manual emergency shutdown signal via the connection. The signal transmission switch 400 in the ON state is sent to the dispatch master station system 500 .

当发电厂的发电设备(汽轮机及/或汽轮机发变组)600处于未并网状态而进行传动试验、电气试验等操作时，断开信号传输开关400。在此状态下，即使至少一个事故保护跳闸开关110跳闸或者所有的手动紧急停机开关210被接通，进而控制器300生成事故发生信号或者手动紧急停机信号，由于信号传输开关400处于断开状态，因此控制器300不可能向调度主站系统500发送事故发生信号或者手动紧急停机信号。亦即，在发电设备600未并网状态下，即便进行各种试验操作，控制器300也不会向调度主站系统500发送无关信号。When the power generation equipment (steam turbine and/or steam turbine generator-transformer group) 600 of the power plant is not connected to the grid and the transmission test, electrical test and other operations are performed, the signal transmission switch 400 is turned off. In this state, even if at least one accident protection trip switch 110 is tripped or all manual emergency stop switches 210 are turned on, and then the controller 300 generates an accident occurrence signal or a manual emergency stop signal, since the signal transmission switch 400 is in the off state, Therefore, it is impossible for the controller 300 to send an accident occurrence signal or a manual emergency stop signal to the dispatch master station system 500 . That is, when the power generation facility 600 is not connected to the grid, even if various test operations are performed, the controller 300 will not send irrelevant signals to the dispatch master station system 500 .

上述内容仅为本发明的优选实施例而已，不能以此限定本发明的实施范围，即凡是依本发明权利要求及发明说明内容所做出的简单的等同替换与修饰，皆仍属于本发明涵盖的范围。The above contents are only preferred embodiments of the present invention, and cannot limit the scope of implementation of the present invention, that is, any simple equivalent replacements and modifications made according to the claims of the present invention and the contents of the description of the invention are still covered by the present invention. range.

Claims (2)

1. a kind of control switch (1000), it is characterised in that shut down including accident protection trip switch unit (100), manual emergency Switch unit (200), signal transmitting switch (400) and controller (300), wherein
The accident protection trip switch unit (100), is connected with generating equipment (600), one with mutual logic or relationship A above accident protection trip switch (110)；
The manual emergency halt switch unit (200), is connected with generating equipment (600), two with mutual logical AND relationship A above manual emergency halt switch (210)；
The signal transmitting switch (400), is connected between the controller (300) and scheduling station system (500), is generating electricity When equipment (600) is grid-connected in an ON state, it is in an off state when generating equipment (600) is not grid-connected, and the letter The setting of number transmitting switch (400) is tripped in the accident protection being connected with the steam turbine transformer unit as generating equipment (600) The side of switch unit (100)；
The controller (300), with the accident protection trip switch unit (100) and the manual emergency halt switch unit (200) it is connected, in the case where generating equipment (600) is grid-connected, when the arbitrary accident protection trip switch (110) is jumped When lock, it is judged as that generating equipment (600) breaks down and generates accident and signal occurs, and accident generation signal is sent to tune It spends main station system (500), and when all manual emergency halt switches (210) are switched on, it is judged as and non-reason occurs Condition and generate manual emergency stopping signal, and the manual emergency stopping signal is sent to scheduling station system (500), generated electricity In the case that equipment (600) is not grid-connected, when tripping or all institutes occur for the arbitrary accident protection trip switch (110) When stating manual emergency halt switch (210) and being switched on, generates and store accident signal or manual emergency stopping signal occurs.
2. control switch (1000) as described in claim 1, it is characterised in that the signal transmitting switch (400) is handle type Switch or knob switch.
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