CN105301396A - Relay protection verification apparatus - Google Patents
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Abstract
本发明提供一种继电保护校验装置，包括电压输出输入端子、状态模拟回路、状态指示回路、状态输出回路，所述电压输出输入端子包括电压输入端子、信号输入端子、电压输出端子，所述状态模拟回路包括并联的继电器KA1、继电器KA2，所述状态指示回路包括指示灯，通过将电压输入端子引入各回路，由信号输入端子控制继电器KA1、继电器KA2实现合闸、分闸模拟，由指示灯与电压输出端子实现合闸、分闸状态反馈。该装置可以通过对断路器响应状态的模拟来代替断路器实际的状态变化，既可以完成对继电保护装置的检测又无需对相关电力线路进行停电，提高电力线路的线损率和电力设备寿命，满足电力用户要求。
The present invention provides a relay protection verification device, which includes a voltage output and input terminal, a state simulation circuit, a state indication circuit, and a state output circuit. The voltage output and input terminals include a voltage input terminal, a signal input terminal, and a voltage output terminal. The state simulation circuit includes a parallel relay KA1 and a relay KA2, and the state indication circuit includes an indicator light. By introducing the voltage input terminal into each circuit, the signal input terminal controls the relay KA1 and the relay KA2 to realize closing and opening simulation. The indicator light and the voltage output terminal realize the closing and opening state feedback. The device can replace the actual state change of the circuit breaker by simulating the response state of the circuit breaker, which can complete the detection of the relay protection device without powering off the relevant power lines, and improve the line loss rate of the power line and the life of the power equipment , to meet the requirements of power users.
Description
技术领域technical field
本发明主要涉及继电保护试验与检修技术领域，具体是一种继电保护校验装置。The invention mainly relates to the technical field of relay protection test and maintenance, in particular to a relay protection verification device.
背景技术Background technique
根据社会的发展要求，电力用户对电网更加依赖，同时对于电网的稳定性、精确性、持续性等提出了更高的要求。为满足电力用户的要求，同时提高电力线路的线损率和电力设备寿命，电力线路应尽量减少停电次数和停电时间。但当前情况下，为保证电网安全，需要经常性的对继电保护装置进行检测，其原理是，通过模拟故障信号，使继电保护装置产生响应，控制断路器的分合。在试验时，需先将相关电力线路由运行状态转为检修状态，这势必造成电力线路停电，进而产生一系列不利因素。According to the requirements of social development, power users are more dependent on the power grid, and at the same time put forward higher requirements for the stability, accuracy, and continuity of the power grid. In order to meet the requirements of power users and at the same time improve the line loss rate of power lines and the life of power equipment, power lines should minimize the number and duration of power outages. However, in the current situation, in order to ensure the safety of the power grid, it is necessary to regularly detect the relay protection device. The principle is to make the relay protection device respond by simulating the fault signal and control the opening and closing of the circuit breaker. During the test, it is necessary to change the relevant power line from the operating state to the maintenance state, which will inevitably cause a power outage of the power line, and then produce a series of unfavorable factors.
为此，拟研制一种继电保护校验装置，实现对断路器运行状态的模拟，在继电保护装置检测试验中代替断路器实际分、合动作，达到既可以完成对继电保护装置的检测又不影响电网持续运行之目的。For this reason, it is proposed to develop a relay protection verification device to simulate the operating state of the circuit breaker, and replace the actual opening and closing action of the circuit breaker in the detection test of the relay protection device, so as to complete the verification of the relay protection device. The detection does not affect the purpose of continuous operation of the power grid.
发明内容Contents of the invention
本发明解决的技术问题在于，针对目前技术的不足，从实际应用出发，提供一种继电保护校验装置，该装置可以通过对断路器响应状态的模拟来代替断路器实际的状态变化，既可以完成对继电保护装置的检测又无需对相关电力线路进行停电，提高电力线路的线损率和电力设备寿命，满足电力用户要求。The technical problem to be solved by the present invention is that, aiming at the deficiency of the current technology, and proceeding from the actual application, a relay protection verification device is provided, which can replace the actual state change of the circuit breaker by simulating the response state of the circuit breaker. The detection of the relay protection device can be completed without shutting down the relevant power lines, improving the line loss rate of the power lines and the life of the power equipment, and meeting the requirements of power users.
为实现上述目的，本发明的技术方案如下：To achieve the above object, the technical scheme of the present invention is as follows:
一种继电保护校验装置，包括电压输出输入端子、状态模拟回路、状态指示回路、状态输出回路，所述电压输出输入端子包括电压输入端子、信号输入端子、电压输出端子，所述状态模拟回路包括并联的继电器KA1、继电器KA2，所述状态指示回路包括指示灯，通过将电压输入端子引入各回路，由信号输入端子控制继电器KA1、继电器KA2实现合闸、分闸模拟，由继电器KA1、继电器KA2的辅助接点与指示灯实现合闸、分闸状态反馈，由继电器KA1、继电器KA2的辅助接点与电压输出端子实现合闸、分闸位置反馈。A relay protection verification device, comprising a voltage output and input terminal, a state simulation circuit, a state indication circuit, and a state output circuit, the voltage output and input terminals include a voltage input terminal, a signal input terminal, and a voltage output terminal, and the state simulation The circuit includes parallel relays KA1 and KA2, and the state indication circuit includes indicator lights. By introducing the voltage input terminals into each circuit, the signal input terminals control the relay KA1 and the relay KA2 to realize closing and opening simulation. The relays KA1, The auxiliary contact and indicator light of relay KA2 realize closing and opening status feedback, and the auxiliary contacts and voltage output terminals of relay KA1 and relay KA2 realize closing and opening position feedback.
进一步，所述状态模拟回路包括模拟合闸回路、模拟分闸回路和合闸自保持回路，其中继电器KA1的线圈一端连接电压输入端子的电源负极端子02，另一端串联自身的常闭辅助接点51、52后与信号输入端子的合闸动作端子07连接，形成模拟合闸回路；继电器KA2的线圈一端连接电源负极端子02，另一端串联自身的一副常开辅助接点13、14后与信号输入端子的分闸动作端子37连接，形成模拟分闸回路；继电器KA1的线圈靠近合闸动作端子07的一端串联其常开辅助接点23、24和继电器KA2的常闭辅助接点51、52后与电压输入端子的电源正极端子01连接，形成自保持回路。Further, the state simulation circuit includes an analog closing circuit, an analog opening circuit and a closing self-holding circuit, wherein one end of the coil of the relay KA1 is connected to the negative power terminal 02 of the voltage input terminal, and the other end is connected in series with its own normally closed auxiliary contact 51, After 52, it is connected to the closing action terminal 07 of the signal input terminal to form an analog closing circuit; one end of the coil of the relay KA2 is connected to the negative terminal 02 of the power supply, and the other end is connected in series with its own pair of normally open auxiliary contacts 13 and 14 to the signal input terminal The opening action terminal 37 of the relay KA1 is connected to form an analog opening circuit; one end of the coil of the relay KA1 close to the closing action terminal 07 is connected in series with its normally open auxiliary contacts 23, 24 and the normally closed auxiliary contacts 51, 52 of the relay KA2, and then connected with the voltage input Terminal 01 of the power supply positive terminal is connected to form a self-holding circuit.
进一步，所述指示灯包括合闸指示灯L1、分闸指示灯L2，其中合闸指示灯L1一端连接电源负极端子02，另一端串联继电器KA1的常开辅助接点33、34后与电源正极端子01连接，形成合闸指示回路；分闸指示灯L2一端连接电源负极端子02，另一端串联继电器KA2的常闭辅助接点61、62后与电源正极端子01连接，形成分闸指示回路。Further, the indicator light includes a closing indicator light L1 and an opening indicator light L2, wherein one end of the closing indicator light L1 is connected to the negative terminal 02 of the power supply, and the other end is connected in series with the normally open auxiliary contacts 33 and 34 of the relay KA1 to connect to the positive terminal of the power supply. 01 connection to form a closing indication circuit; one end of the opening indicator light L2 is connected to the negative terminal 02 of the power supply, and the other end is connected in series with the normally closed auxiliary contacts 61 and 62 of the relay KA2 to the positive terminal 01 of the power supply to form an opening indication circuit.
进一步，所述状态输出回路包括合闸输出回路和分闸输出回路，其中继电器KA1的常开辅助接点43、44一端连接电源正极端子01，另一端连接电压输出端子的合闸输出端子H，形成合闸输出回路；继电器KA2的常闭辅助接点71、72一端连接电源正极端子01，另一端连接电压输出端子的分闸输出端子F，形成分闸输出回路。Further, the state output circuit includes a closing output circuit and an opening output circuit, wherein one end of the normally open auxiliary contacts 43 and 44 of the relay KA1 is connected to the positive terminal 01 of the power supply, and the other end is connected to the closing output terminal H of the voltage output terminal, forming Closing output circuit; one end of the normally closed auxiliary contacts 71 and 72 of the relay KA2 is connected to the positive terminal 01 of the power supply, and the other end is connected to the opening output terminal F of the voltage output terminal to form an opening output circuit.
本发明的有益效果：Beneficial effects of the present invention:
本发明首先将输入电压信号引入到状态模拟回路，利用信号输入对继电器KA1和继电器KA2的控制，实现断路器的分合状态的模拟，并通过状态指示和输出回路准确反映出断路器的分、合，同时不影响断路器实际正常运行；本装置从根本上解决了当前继电保护装置检测试验需对相关电力线路停电的弊端，保障了电网安全稳定运行，使继电保护装置检测工作更加便捷高效。The present invention firstly introduces the input voltage signal into the state simulation circuit, uses the signal input to control the relay KA1 and the relay KA2, realizes the simulation of the opening and closing state of the circuit breaker, and accurately reflects the opening and closing of the circuit breaker through the state indication and the output circuit. At the same time, it does not affect the actual normal operation of the circuit breaker; this device fundamentally solves the disadvantages of the current relay protection device detection test that needs to cut off the power of the relevant power lines, ensures the safe and stable operation of the power grid, and makes the relay protection device detection work more convenient efficient.
附图说明Description of drawings
附图1为本发明电路原理示意图；Accompanying drawing 1 is schematic diagram of circuit principle of the present invention;
附图2为本发明工作原理示意图；Accompanying drawing 2 is schematic diagram of working principle of the present invention;
附图3为本发明外观结构示意图。Accompanying drawing 3 is the appearance structure diagram of the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
实施例：如附图1、2、3所示，一种继电保护校验装置，包括壳体，所述壳体内设有电压输出输入端子、状态模拟回路、状态指示回路、状态输出回路，所述电压输出输入端子包括电压输入端子、信号输入端子、电压输出端子，所述状态模拟回路包括并联的继电器KA1、继电器KA2，所述状态指示回路包括指示灯，通过将电压输入端子引入各回路，由信号输入端子控制继电器KA1、继电器KA2实现合闸、分闸模拟，由继电器KA1、继电器KA2的辅助接点与指示灯实现合闸、分闸状态反馈，由继电器KA1、继电器KA2的辅助接点与电压输出端子实现合闸、分闸位置反馈；其中，所述状态模拟回路包括模拟合闸回路、模拟分闸回路和合闸自保持回路，其中继电器KA1的线圈一端连接电压输入端子的电源负极端子02，另一端串联自身的常闭辅助接点51、52后与信号输入端子的合闸动作端子07连接，形成模拟合闸回路；继电器KA2的线圈一端连接电源负极端子02，另一端串联自身的一副常开辅助接点13、14后与信号输入端子的分闸动作端子37连接，形成模拟分闸回路；继电器KA1的线圈靠近合闸动作端子07的一端串联其常开辅助接点23、24和继电器KA2的常闭辅助接点51、52后与电压输入端子的电源正极端子01连接，形成自保持回路；所述指示灯包括合闸指示灯L1、分闸指示灯L2，其中合闸指示灯L1一端连接电源负极端子02，另一端串联继电器KA1的常开辅助接点33、34后与电源正极端子01连接，形成合闸指示回路；分闸指示灯L2一端连接电源负极端子02，另一端串联继电器KA2的常闭辅助接点61、62后与电源正极端子01连接，形成分闸指示回路；所述状态输出回路包括合闸输出回路和分闸输出回路，其中继电器KA1的常开辅助接点43、44一端连接电源正极端子01，另一端连接电压输出端子的合闸输出端子H，形成合闸输出回路；继电器KA2的常闭辅助接点71、72一端连接电源正极端子01，另一端连接电压输出端子的分闸输出端子F，形成分闸输出回路，电源正极端子01、电源负极端子02、合闸动作端子07、分闸动作端子37、合闸输出端子H、分闸输出端子F、合闸指示灯L1、分闸指示灯L2裸露在壳体外部。Embodiment: As shown in Figures 1, 2, and 3, a relay protection verification device includes a housing, and the housing is provided with voltage output and input terminals, a state simulation circuit, a state indication circuit, and a state output circuit. The voltage output and input terminals include a voltage input terminal, a signal input terminal, and a voltage output terminal. The state simulation circuit includes a parallel relay KA1 and a relay KA2. The state indication circuit includes an indicator light. By introducing the voltage input terminal into each circuit , the relay KA1 and relay KA2 are controlled by the signal input terminal to realize the closing and opening simulation, the auxiliary contacts and indicator lights of the relay KA1 and KA2 are used to realize the closing and opening state feedback, and the auxiliary contacts of the relay KA1 and KA2 are connected with the The voltage output terminal realizes closing and opening position feedback; wherein, the state simulation circuit includes an analog closing circuit, an analog opening circuit and a closing self-holding circuit, wherein one end of the coil of the relay KA1 is connected to the negative power terminal 02 of the voltage input terminal , the other end is connected in series with its own normally closed auxiliary contacts 51, 52 and then connected to the closing action terminal 07 of the signal input terminal to form an analog closing circuit; one end of the coil of relay KA2 is connected to the negative terminal 02 of the power supply, and the other end is connected in series with its own pair of The normally open auxiliary contacts 13 and 14 are connected to the opening action terminal 37 of the signal input terminal to form an analog opening circuit; the coil of the relay KA1 close to the closing action terminal 07 is connected in series with its normally open auxiliary contacts 23 and 24 and the relay KA2 The normally closed auxiliary contacts 51 and 52 of the voltage input terminal are connected to the positive power terminal 01 of the voltage input terminal to form a self-holding circuit; the indicator lights include a closing indicator light L1 and an opening indicator light L2, and one end of the closing indicator light L1 is connected to The negative terminal 02 of the power supply, the other end is connected in series with the normally open auxiliary contacts 33 and 34 of the relay KA1, and then connected to the positive terminal 01 of the power supply to form a closing indication circuit; one end of the opening indicator light L2 is connected to the negative terminal 02 of the power supply, and the other end is connected in series with the relay KA2. The normally closed auxiliary contacts 61 and 62 are then connected to the positive terminal 01 of the power supply to form an opening indication circuit; the state output circuit includes a closing output circuit and an opening output circuit, wherein the normally open auxiliary contacts 43 and 44 of the relay KA1 are connected at one end The positive terminal 01 of the power supply, the other end is connected to the closing output terminal H of the voltage output terminal to form a closing output circuit; one end of the normally closed auxiliary contacts 71 and 72 of the relay KA2 is connected to the positive terminal 01 of the power supply, and the other end is connected to the opening of the voltage output terminal Output terminal F, forming an opening output circuit, power supply positive terminal 01, power supply negative terminal 02, closing action terminal 07, opening action terminal 37, closing output terminal H, opening output terminal F, closing indicator light L1, The opening indicator light L2 is exposed outside the casing.
本实施例中，电源正极端子01、电源负极端子02、合闸动作端子07、分闸动作端子37、合闸输出端子H、分闸输出端子F、合闸指示灯L1、分闸指示灯L2裸露在壳体外部，在使用时，电压输入端子用于接入电源电压及继电保护装置二次控制回路的输出信号，其中电源正极端子01接口输入DC+220V电压，电源负极端子02接入DC-220V电压，利用试验线将继电保护校验装置的合闸动作端子07、分闸动作端子37与继电保护装置相应端子连接，将合闸输出端子H、分闸输出端子F与继电保护测试仪相应开关量输入接口相连即可。In this embodiment, power supply positive terminal 01, power supply negative terminal 02, closing action terminal 07, opening action terminal 37, closing output terminal H, opening output terminal F, closing indicator light L1, opening indicator light L2 It is exposed on the outside of the housing. When in use, the voltage input terminal is used to connect the power supply voltage and the output signal of the secondary control circuit of the relay protection device. The positive terminal 01 of the power supply inputs DC+220V voltage, and the negative terminal 02 of the power supply is connected to it. DC-220V voltage, use the test line to connect the closing action terminal 07 and opening action terminal 37 of the relay protection verification device with the corresponding terminals of the relay protection device, and connect the closing output terminal H and the opening output terminal F to the relay The electrical protection tester can be connected to the corresponding switch input interface.
本实施例的有益效果：本实施例中状态模拟回路用来模拟断路器分合状态、状态指示回路由继电器辅助接点两端电位变化通过指示灯反应断路器的分合状态，再由电压输出端子将状态模拟量输出，精确反映断路器的分、合位置，在使用过程中无需对相关电力线路进行停电处理，保障了电网安全稳定运行，使继电保护装置检测工作更加快捷、高效。Beneficial effects of this embodiment: The state simulation circuit in this embodiment is used to simulate the opening and closing state of the circuit breaker, and the state indication circuit reflects the opening and closing state of the circuit breaker through the potential change at both ends of the auxiliary contact of the relay through the indicator light, and then the voltage output terminal The status analog output can accurately reflect the opening and closing position of the circuit breaker, and there is no need to deal with power outages on the relevant power lines during use, which ensures the safe and stable operation of the power grid and makes the detection of relay protection devices faster and more efficient.
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| CN106291203A (en) * | 2016-09-26 | 2017-01-04 | 深圳供电局有限公司 | 10kV permanent magnetic mechanism simulation circuit breaker |
| CN106546913A (en) * | 2016-11-01 | 2017-03-29 | 中科电力装备（安徽）智能化科技有限公司 | A kind of breaker relay protection detector |
| CN112526258A (en) * | 2020-11-16 | 2021-03-19 | 广东电网有限责任公司 | Distribution network feeder line fixed value calibration table |
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| CN103293350A (en) * | 2013-06-06 | 2013-09-11 | 国家电网公司 | Micro analog circuit breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106291203A (en) * | 2016-09-26 | 2017-01-04 | 深圳供电局有限公司 | 10kV permanent magnetic mechanism simulation circuit breaker |
| CN106291203B (en) * | 2016-09-26 | 2023-05-02 | 深圳供电局有限公司 | 10kV permanent magnet mechanism simulation breaker |
| CN106546913A (en) * | 2016-11-01 | 2017-03-29 | 中科电力装备（安徽）智能化科技有限公司 | A kind of breaker relay protection detector |
| CN112526258A (en) * | 2020-11-16 | 2021-03-19 | 广东电网有限责任公司 | Distribution network feeder line fixed value calibration table |
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Application publication date: 20160203 |