阅读说明：本技术 一种断路器本体三相不一致的保护系统及其实现方法 (Protection system for three-phase inconsistency of circuit breaker body and implementation method thereof ) 是由 王晓明 林翔宇 周柯 巫聪云 李文伟 周卫 芦宇峰 彭博雅 于 2020-06-23 设计创作，主要内容包括：本发明公开了一种断路器本体三相不一致的保护系统及其实现方法,其中,所述系统包括：设置在断路器本体的三个相机构箱和智能控制模块；其中,每个相机构箱内均设置有一个就地采集模块,就地采集模块与智能控制模块通过光纤进行连接；就地采集模块用于对断路器的位置信号信息进行采集及处理并发送至所述智能控制模块；对智能控制模块发送的GOOSE命令进行解析,对出口继电器进行出口跳闸处理；智能控制模块用于接收位置信号信息,生成用于控制出口继电器调整的GOOSE命令,将GOOSE命令发送至所述就地采集模块。在本发明实施例中,可以有效的避免因继电器及回路异常导致的误动情况,可大大提升断路器本体三相不一致保护的可靠性。(The invention discloses a protection system for three-phase inconsistency of a breaker body and an implementation method thereof, wherein the system comprises: the three camera mechanism boxes and the intelligent control module are arranged on the circuit breaker body; each camera mechanism box is internally provided with an in-situ acquisition module, and the in-situ acquisition module is connected with the intelligent control module through an optical fiber; the on-site acquisition module is used for acquiring and processing position signal information of the circuit breaker and sending the position signal information to the intelligent control module; analyzing a GOOSE command sent by the intelligent control module, and performing outlet trip processing on an outlet relay; the intelligent control module is used for receiving the position signal information, generating a GOOSE command for controlling the outlet relay to adjust, and sending the GOOSE command to the local acquisition module. In the embodiment of the invention, the misoperation condition caused by the abnormity of the relay and the loop can be effectively avoided, and the reliability of three-phase inconsistent protection of the breaker body can be greatly improved.)

1. A circuit breaker body three-phase inconsistent protection system, the system comprising: the three camera mechanism boxes and the intelligent control module are arranged on the circuit breaker body; wherein the content of the first and second substances,

each phase mechanism box is internally provided with a local acquisition module, and the local acquisition module is connected with the intelligent control module through an optical fiber;

the on-site acquisition module is used for acquiring and processing position signal information of the circuit breaker and sending the position signal information to the intelligent control module; the intelligent control module is used for carrying out GOOSE communication with the intelligent control module, analyzing a GOOSE command sent by the intelligent control module and carrying out outlet trip processing on an outlet relay according to signal information obtained by analysis;

the intelligent control module is used for receiving the position signal information sent by the local acquisition module based on the optical fiber, performing logic calculation based on the position signal information to generate a GOOSE command for controlling the outlet relay to adjust, and sending the GOOSE command to the local acquisition module based on the optical fiber.

2. The protection system of claim 1, wherein the on-site acquisition module comprises: the device comprises a power supply unit, an input unit, a data processing unit and an output unit; wherein the content of the first and second substances,

the power supply unit is used for supplying power to the data processing unit, the opening unit and the outlet unit;

the opening unit is used for collecting position signal information of the circuit breaker and sending the collected position signal information to the data processing unit;

the data processing unit is used for processing the position signal information, sending the position signal information to the intelligent control module, receiving a GOOSE command sent by the intelligent control module, analyzing the GOOSE command, and sending the signal information obtained by analysis to the outlet unit;

and the outlet unit is used for receiving the analysis acquisition signal information sent by the data processing unit and carrying out outlet tripping processing on the outlet relay based on the analysis acquisition signal information.

3. The protection system according to claim 2, wherein the opening unit comprises: the switch auxiliary contact is isolated from the optical coupler and connected with the optical coupler;

the switch auxiliary contact is used for opening or closing according to the opening or closing of the circuit breaker;

the optical coupler isolator is used for acquiring opening or closing signals of the switch auxiliary contact to obtain position signal information of the circuit breaker and sending the acquired position signal information to the data processing unit.

4. The protection system according to claim 2, wherein the outlet unit comprises: the switching-off and switching-on coil and the outlet loop are electrically connected;

the outlet loop is used for receiving the analysis obtained signal information sent by the data processing unit and controlling the opening and closing coil to carry out outlet tripping processing on the outlet relay based on the analysis obtained signal information;

and the opening and closing coil is used for responding to the control of the outlet loop and carrying out outlet tripping processing on the outlet relay.

5. The protection system according to claim 2, wherein the data processing unit adopts a CPU + DSP architecture, and the CPU is communicatively connected to the DSP through a CNN bus;

the CPU is used for receiving the position signal information acquired by the open-close unit and sending the position signal information to the DSP based on a CNN bus; receiving analysis acquisition signal information sent by the DSP based on a CNN bus, and controlling the outlet unit according to the analysis acquisition signal information;

the DSP is used for packaging the position signal information and sending the packaged position signal information to the intelligent control module based on an optical fiber; and receiving the GOOSE command sent by the intelligent control module, analyzing the GOOSE command, and sending signal information obtained by analysis to the CPU.

6. The protection system according to claim 1, characterized in that said intelligent control module GOOSE unit and logic calculation unit;

the GOOSE unit is used for receiving the position signal information sent by the local acquisition module based on optical fibers and sending the position signal information to the logic calculation unit based on an internal bus; receiving the GOOSE command, and sending the GOOSE command to the local acquisition module based on management;

the logic calculation unit is used for performing logic calculation based on the position signal information to obtain a calculation result, generating a GOOSE command according to the calculation result, and sending the GOOSE command to the GOOSE unit based on an internal bus.

7. A method for realizing a three-phase inconsistent protection system of a breaker body is characterized by comprising the following steps:

the corresponding local acquisition modules arranged in the three camera mechanism boxes acquire position signal information of the circuit breaker in real time;

the local acquisition module is used for packaging the acquired position signal information and sending the packaged position signal information to the intelligent control module based on the optical fiber;

the intelligent control module performs logic calculation based on the packaged position signal information and generates a GOOSE command for controlling the outlet relay to adjust based on the calculation result;

the intelligent control module sends the GOOSE command to the local acquisition module based on an optical fiber;

and the local acquisition module analyzes the GOOSE command sent by the intelligent control module and performs outlet trip processing on the outlet relay according to the signal information obtained by analysis.

Technical Field

The invention relates to the technical field of three-phase protection of a high-voltage circuit breaker body, in particular to a protection system for three-phase inconsistency of the circuit breaker body and an implementation method thereof.

Background

When the power system is in abnormal operation with three-phase and three-phase inconsistency, zero sequence component and negative sequence component can be generated, which can cause damage to the generator and the motor, generate interference to the communication system and influence the correct action of the system protection device, so the power system does not allow the long-time three-phase inconsistent operation, and the circuit breakers in phase splitting operation are all provided with three-phase and three-phase inconsistent protection of the main body to ensure that the circuit breakers in abnormal states are reliably tripped when the three phases are inconsistent And the cable insulation is abnormal, and the like, so that a false tripping phenomenon occurs.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a three-phase inconsistent protection system of a circuit breaker body and an implementation method thereof, which can effectively avoid the misoperation condition caused by the abnormity of a relay and a loop and can greatly improve the reliability of three-phase inconsistent protection of the circuit breaker body.

In order to solve the above technical problem, an embodiment of the present invention provides a protection system for inconsistent three phases of a circuit breaker body, where the system includes: the three camera mechanism boxes and the intelligent control module are arranged on the circuit breaker body; wherein the content of the first and second substances,

each phase mechanism box is internally provided with a local acquisition module, and the local acquisition module is connected with the intelligent control module through an optical fiber;

the on-site acquisition module is used for acquiring and processing position signal information of the circuit breaker and sending the position signal information to the intelligent control module; the intelligent control module is used for carrying out GOOSE communication with the intelligent control module, analyzing a GOOSE command sent by the intelligent control module and carrying out outlet trip processing on an outlet relay according to signal information obtained by analysis;

the intelligent control module is used for receiving the position signal information sent by the local acquisition module based on the optical fiber, performing logic calculation based on the position signal information to generate a GOOSE command for controlling the outlet relay to adjust, and sending the GOOSE command to the local acquisition module based on the optical fiber.

Optionally, the in-situ acquisition module includes: the device comprises a power supply unit, an input unit, a data processing unit and an output unit; wherein the content of the first and second substances,

the power supply unit is used for supplying power to the data processing unit, the opening unit and the outlet unit;

the opening unit is used for collecting position signal information of the circuit breaker and sending the collected position signal information to the data processing unit;

the data processing unit is used for processing the position signal information, sending the position signal information to the intelligent control module, receiving a GOOSE command sent by the intelligent control module, analyzing the GOOSE command, and sending the signal information obtained by analysis to the outlet unit;

and the outlet unit is used for receiving the analysis acquisition signal information sent by the data processing unit and carrying out outlet tripping processing on the outlet relay based on the analysis acquisition signal information.

Optionally, the opening unit includes: the switch auxiliary contact is isolated from the optical coupler and connected with the optical coupler;

the switch auxiliary contact is used for opening or closing according to the opening or closing of the circuit breaker;

the optical coupler isolator is used for acquiring opening or closing signals of the switch auxiliary contact to obtain position signal information of the circuit breaker and sending the acquired position signal information to the data processing unit.

Optionally, the outlet unit comprises: the switching-off and switching-on coil and the outlet loop are electrically connected;

the outlet loop is used for receiving the analysis obtained signal information sent by the data processing unit and controlling the opening and closing coil to carry out outlet tripping processing on the outlet relay based on the analysis obtained signal information;

and the opening and closing coil is used for responding to the control of the outlet loop and carrying out outlet tripping processing on the outlet relay.

Optionally, the data processing unit adopts a CPU + DSP architecture, and the CPU is in communication connection with the DSP through a CNN bus;

the CPU is used for receiving the position signal information acquired by the open-close unit and sending the position signal information to the DSP based on a CNN bus; receiving analysis acquisition signal information sent by the DSP based on a CNN bus, and controlling the outlet unit according to the analysis acquisition signal information;

the DSP is used for packaging the position signal information and sending the packaged position signal information to the intelligent control module based on an optical fiber; and receiving the GOOSE command sent by the intelligent control module, analyzing the GOOSE command, and sending signal information obtained by analysis to the CPU.

Optionally, the intelligent control module GOOSE unit and the logic calculation unit;

the GOOSE unit is used for receiving the position signal information sent by the local acquisition module based on optical fibers and sending the position signal information to the logic calculation unit based on an internal bus; receiving the GOOSE command, and sending the GOOSE command to the local acquisition module based on management;

the logic calculation unit is used for performing logic calculation based on the position signal information to obtain a calculation result, generating a GOOSE command according to the calculation result, and sending the GOOSE command to the GOOSE unit based on an internal bus.

In addition, the embodiment of the invention also provides an implementation method of a protection system for three-phase inconsistency of a circuit breaker body, which comprises the following steps:

the corresponding local acquisition modules arranged in the three camera mechanism boxes acquire position signal information of the circuit breaker in real time;

the local acquisition module is used for packaging the acquired position signal information and sending the packaged position signal information to the intelligent control module based on the optical fiber;

the intelligent control module performs logic calculation based on the packaged position signal information and generates a GOOSE command for controlling the outlet relay to adjust based on the calculation result;

the intelligent control module sends the GOOSE command to the local acquisition module based on an optical fiber;

and the local acquisition module analyzes the GOOSE command sent by the intelligent control module and performs outlet trip processing on the outlet relay according to the signal information obtained by analysis.

In the embodiment of the invention, the split-phase on-site acquisition module and the intelligent control module which are integrally designed on the circuit breaker mechanism body are taken as the main parts, the split-phase digital on-site acquisition module realizes the on-site acquisition and the optical fiber transmission of the position of the circuit breaker, the intelligent control module realizes the three-phase inconsistent logic operation, the outlet and the communication with the spacer layer of the body, and the optical fiber transmission replaces the traditional cable, so that the misoperation condition caused by the abnormity of the relay and the loop is effectively avoided, and the reliability of the three-phase inconsistent protection of the circuit breaker body can be greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural composition diagram of a three-phase inconsistent protection system of a circuit breaker body in an embodiment of the invention;

FIG. 2 is a schematic diagram of the structure of an in-situ acquisition module according to an embodiment of the present invention;

FIG. 3 is a schematic structural component diagram of an intelligent control module in an embodiment of the present invention;

FIG. 4 is a schematic diagram of the structure of the CPU + DSP architecture in the embodiment of the present invention;

FIG. 5 is a schematic diagram of a logic operation process according to an embodiment of the present invention;

fig. 6 is a schematic flow chart of an implementation method of a protection system for three-phase inconsistency of a circuit breaker body in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.