CN104297675A - All-state monitoring apparatus for opening and closing of circuit breaker - Google Patents
All-state monitoring apparatus for opening and closing of circuit breaker Download PDFInfo
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Abstract
本发明涉及一种断路器分合闸全状态监测装置，通过光电信号采集模块MC对分合闸回路断路器辅助接点两端电位变化的监视，判断分合闸回路的运行状态是否正确，光电信号采集模块MC的输出控制继电器KA的通断，将继电器KA的辅助接点引出，用于分合闸回路状态指示及状态报警。本发明的优点是：准确监视断路器分合闸回路的运行全状态，避免监视盲区；基于光电采集技术，具有光电隔离功能，防止回路干扰；基于光电采集技术，信号采集正确可靠，响应速度快；采样回路电流小(小于2mA)，不会影响原有分合闸回路位置继电器的正常工作，降低事故发生几率。
The invention relates to a circuit breaker opening and closing full state monitoring device, which monitors the potential changes at both ends of the auxiliary contacts of the opening and closing circuit circuit breaker through the photoelectric signal acquisition module MC to judge whether the operating state of the opening and closing circuit is correct, and the photoelectric signal The output of the acquisition module MC controls the on-off of the relay KA, leads out the auxiliary contact of the relay KA, and is used for the state indication and state alarm of the opening and closing circuit. The invention has the advantages of: accurately monitoring the full operation status of the circuit breaker opening and closing circuit, avoiding monitoring blind spots; based on the photoelectric collection technology, it has the function of photoelectric isolation to prevent circuit interference; based on the photoelectric collection technology, the signal collection is correct and reliable, and the response speed is fast ; The sampling circuit current is small (less than 2mA), which will not affect the normal operation of the original opening and closing circuit position relay, reducing the probability of accidents.
Description
技术领域technical field
本发明涉及一种电力系统断路器状态监视一种断路器分、合闸全状态监测装置。The invention relates to a state monitoring device of a circuit breaker in a power system, a circuit breaker opening and closing state monitoring device.
背景技术Background technique
电力系统发生过多起运行中的断路器(合闸状态)，合闸回路发生故障时不能发告警信号(断路器在合闸状态下不能监测合闸回路完好性)，当系统发生瞬时性故障时造成重合闸动作断路器合闸失败，使事故进一步扩大；备用中的断路器(分闸状态)，分闸回路发生故障时不能发告警信号(断路器在分闸状态下不能监测分闸回路完好性)，当备用中的断路器(分闸状态)投入系统运行(断路器合闸)时发告警信号(断路器合闸状态时能监测分闸完好性)，运行中的断路器被迫停电处理。因此，拟研制一种新型监测装置能够监视断路器分、合闸回路的全状态，为运行提供准确判断依据，确保开关正确动作。目前国内外断路器领域尚未开始这方面的研究。本项目的新亮点在于通过安装新型监控装置，来正确监测运行中的断路器变位全状态，且不会影响原有操作监视回路工作。There are too many circuit breakers in operation (closed state) in the power system, and the alarm signal cannot be sent when the closing circuit fails (the circuit breaker cannot monitor the integrity of the closing circuit in the closed state). When the reclosing action circuit breaker fails to close, the accident is further expanded; the circuit breaker in standby (open state), when the opening circuit fails, the alarm signal cannot be sent (the circuit breaker cannot monitor the opening circuit in the open state) Integrity), when the standby circuit breaker (opening state) is put into system operation (circuit breaker closed), an alarm signal is sent (the circuit breaker can monitor the integrity of the opening when the circuit breaker is closed), and the operating circuit breaker is forced to Power outage processing. Therefore, it is planned to develop a new type of monitoring device that can monitor the full state of the circuit breaker's opening and closing circuits, provide accurate judgment basis for operation, and ensure the correct operation of the switch. At present, the field of circuit breakers at home and abroad has not yet started research in this area. The new highlight of this project is that by installing a new type of monitoring device, it can correctly monitor the full state of the circuit breaker in operation without affecting the original operation monitoring circuit.
发明内容Contents of the invention
为克服现有技术的不足，本发明的目的是提供一种断路器分、合闸全状态监测装置，基于光电信号采集技术，实现电力系统断路器分、合闸回路全状态监视告警功能，提升电力系统运行监视水平，降低事故发生几率。In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a circuit breaker opening and closing full-state monitoring device, based on the photoelectric signal acquisition technology, to realize the full-state monitoring and alarm function of the circuit breaker opening and closing circuit in the power system, and to improve Power system operation monitoring level to reduce the probability of accidents.
为实现上述目的，本发明通过以下技术方案实现：To achieve the above object, the present invention is achieved through the following technical solutions:
一种断路器分、合闸全状态监测装置，包括光电信号采集模块MC，电压采集回路、告警继电器回路、外壳及输出端子，具体监测电路结构为：A circuit breaker opening and closing full state monitoring device, including a photoelectric signal acquisition module MC, a voltage acquisition circuit, an alarm relay circuit, a casing and an output terminal. The specific monitoring circuit structure is:
电压采集回路由电阻R2、电阻R3组成，告警继电器回路主要由继电器KA、电阻R1组成，输出端子设置在壳体的面板上，电阻R2一端与设置在外壳的输出端子K1连接，电阻R2另一端与电阻R3一端、稳压二极管D负极、光电信号采集模块MC的1脚连接，电阻R3另一端与输出端子K2、稳压二极管D正极、光电信号采集模块MC的2脚连接，光电信号采集模块MC的6脚与电阻R1一端相连，电阻R1另一端与电源正极连接，光电信号采集模块MC的4脚与继电器KA线圈一端连接，继电器KA线圈另一端与电源负极相连，继电器KA的辅助接点分别接到外壳的信号输出端子J1-J4，所述的输出端子K1和K2分别连接被测回路的断路器辅助接点两侧电路；通过光电信号采集模块MC对分、合闸回路断路器辅助接点两端电位变化的监视，判断分、合闸回路的运行状态是否正确，光电信号采集模块MC的输出控制继电器KA的通断，将继电器KA的辅助接点引出，接到输出端子上，用于分、合闸回路状态指示及状态报警；两个监测回路分别用于监测断路器的分、合闸回路。The voltage acquisition circuit is composed of resistor R2 and resistor R3. The alarm relay circuit is mainly composed of relay KA and resistor R1. The output terminal is set on the panel of the shell. One end of resistor R2 is connected to the output terminal K1 set on the shell, and the other end of resistor R2 is Connect one end of the resistor R3, the negative pole of the Zener diode D, and pin 1 of the photoelectric signal acquisition module MC, and the other end of the resistor R3 is connected to the output terminal K2, the positive pole of the Zener diode D, and the second pin of the photoelectric signal acquisition module MC. Pin 6 of MC is connected to one end of resistor R1, and the other end of resistor R1 is connected to the positive pole of the power supply. Pin 4 of the photoelectric signal acquisition module MC is connected to one end of the coil of relay KA, and the other end of the coil of relay KA is connected to the negative pole of the power supply. The auxiliary contacts of relay KA are respectively Connected to the signal output terminals J1-J4 of the shell, the output terminals K1 and K2 are respectively connected to the circuits on both sides of the auxiliary contact of the circuit breaker of the circuit under test; Monitoring of terminal potential changes, judging whether the operating status of the opening and closing circuits is correct, the output of the photoelectric signal acquisition module MC controls the on-off of the relay KA, leads the auxiliary contact of the relay KA to the output terminal, and is used for opening and closing. Closing circuit status indication and status alarm; two monitoring circuits are used to monitor the opening and closing circuits of the circuit breaker respectively.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1)本装置准确监视断路器分、合闸回路的运行全状态，避免监视盲区；1) This device accurately monitors the full operation status of the opening and closing circuits of the circuit breaker to avoid monitoring blind spots;
2)基于光电采集技术，具有光电隔离功能，防止回路干扰；2) Based on photoelectric acquisition technology, it has photoelectric isolation function to prevent loop interference;
3)基于光电采集技术，信号采集正确可靠，响应速度快；3) Based on photoelectric acquisition technology, the signal acquisition is accurate and reliable, and the response speed is fast;
4)基于光电采集技术，采样回路电流小(小于2mA)，不会影响原有分、合闸回路位置继电器的正常工作，降低事故发生几率。4) Based on the photoelectric acquisition technology, the sampling circuit current is small (less than 2mA), which will not affect the normal operation of the original opening and closing circuit position relays, reducing the probability of accidents.
附图说明Description of drawings
图1是本发明的电气原理图。Figure 1 is an electrical schematic diagram of the present invention.
图2是本发明的工作原理图。Fig. 2 is a working principle diagram of the present invention.
图3是本发明壳体面板结构示意图。Fig. 3 is a structural schematic diagram of the housing panel of the present invention.
具体实施方式Detailed ways
下面结合说明书附图对本发明进行详细地描述，但是应该指出本发明的实施不限于以下的实施方式。The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.
见图1-图3，一种断路器分、合闸全状态监测装置，包括光电信号采集模块MC，电压采集回路、告警继电器回路、外壳及输出端子，具体监测电路结构为：See Fig. 1-Fig. 3, a circuit breaker opening and closing state monitoring device, including photoelectric signal acquisition module MC, voltage acquisition circuit, alarm relay circuit, casing and output terminal, the specific monitoring circuit structure is:
电压采集回路由电阻R2、电阻R3组成，告警继电器回器路主要由继电器KA、电阻R1组成，输出端子设置在壳体的面板上，电阻R2一端与设置在外壳的输出端子K1连接，电阻R2另一端与电阻R3一端、稳压二极管D负极、光电信号采集模块MC的1脚连接，电阻R3另一端与输出端子K2、稳压二极管D正极、光电信号采集模块MC的2脚连接，采集回路连接完毕。光电信号采集模块MC的6脚与电阻R1一端相连，电阻R1另一端通过设在壳体的端子与电源正极连接，光电信号采集模块MC的4脚与继电器KA线圈一端连接，继电器KA线圈另一端通过设在壳体的端子与电源负极相连，继电器KA的辅助接点分别接到外壳的信号输出端子J1-J4，所述的输出端子K1和K2分别连接被测回路的断路器辅助接点两侧电路；通过光电信号采集模块MC对分、合闸回路断路器辅助接点两端电位变化的监视，判断分、合闸回路的运行状态是否正确，光电信号采集模块MC的输出控制继电器KA的通断，将继电器KA的辅助接点引出，用于分、合闸回路状态指示及状态报警，形成监测回路，每个断路器分、合闸全状态监测装置里有两个相同的监测回路，分别用于监测分闸、合闸回路。The voltage acquisition circuit is composed of resistor R2 and resistor R3. The alarm relay return circuit is mainly composed of relay KA and resistor R1. The output terminal is set on the panel of the shell. One end of the resistor R2 is connected to the output terminal K1 set on the shell. The resistor R2 The other end is connected to one end of the resistor R3, the negative pole of the Zener diode D, and pin 1 of the photoelectric signal acquisition module MC, and the other end of the resistor R3 is connected to the output terminal K2, the positive pole of the Zener diode D, and the 2 pin of the photoelectric signal acquisition module MC. The connection is complete. Pin 6 of the photoelectric signal acquisition module MC is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the positive pole of the power supply through a terminal located on the housing. Pin 4 of the photoelectric signal acquisition module MC is connected to one end of the coil of the relay KA, and the other end of the coil of the relay KA The terminals on the housing are connected to the negative pole of the power supply, and the auxiliary contacts of the relay KA are respectively connected to the signal output terminals J1-J4 of the housing, and the output terminals K1 and K2 are respectively connected to the circuits on both sides of the circuit breaker auxiliary contacts of the circuit under test. ; through the photoelectric signal acquisition module MC to monitor the potential changes at both ends of the auxiliary contact of the breaker and closing circuit breaker, judge whether the operating state of the opening and closing circuit is correct, the output of the photoelectric signal acquisition module MC controls the on and off of the relay KA, The auxiliary contact of the relay KA is drawn out for the state indication and status alarm of the opening and closing circuits to form a monitoring circuit. There are two identical monitoring circuits in the full state monitoring device for opening and closing of each circuit breaker, which are respectively used for monitoring Opening and closing circuits.
本发明的优点是：The advantages of the present invention are:
1)本装置准确监视断路器分、合闸回路的运行全状态，避免监视盲区；1) This device accurately monitors the full operation status of the opening and closing circuits of the circuit breaker to avoid monitoring blind spots;
2)基于光电采集技术，具有光电隔离功能，防止回路干扰；2) Based on photoelectric acquisition technology, it has photoelectric isolation function to prevent loop interference;
3)基于光电采集技术，信号采集正确可靠，响应速度快；3) Based on photoelectric acquisition technology, the signal acquisition is accurate and reliable, and the response speed is fast;
4)基于光电采集技术，采样回路电流小(小于2mA)，不会影响原有分、合闸回路位置继电器的正常工作，降低事故发生几率。4) Based on the photoelectric acquisition technology, the sampling circuit current is small (less than 2mA), which will not affect the normal operation of the original opening and closing circuit position relays, reducing the probability of accidents.
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Effective date of registration: 20180425 Address after: 114002 South victory road, Tiedong District, Anshan, Liaoning Province, No. 33 Co-patentee after: State Grid Corporation of China Patentee after: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Co-patentee after: Liaoning Lanling easy Electric Engineering Co. Ltd. Address before: 100031 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Co-patentee before: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Patentee before: State Grid Corporation of China Co-patentee before: Anshan Lanling Jidian Protection Co.,Ltd. |
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