CN103841116B - A kind of switching on breaker and its implementation for improving security performance - Google Patents
A kind of switching on breaker and its implementation for improving security performance Download PDFInfo
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- CN103841116B CN103841116B CN201410107000.1A CN201410107000A CN103841116B CN 103841116 B CN103841116 B CN 103841116B CN 201410107000 A CN201410107000 A CN 201410107000A CN 103841116 B CN103841116 B CN 103841116B
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Abstract
The present invention provides a kind of switching on breaker and its implementation for improving security performance, the breaker includes contact system, arc quenching system, operating mechanism, buckle releaser and shell, and the switching on breaker includes power plant module 1, power module 2, control module 3, communication module 4 and security module 5；The power module 2 is connect with the power plant module 1, power module 2, control module 3 and communication module 4 respectively；The control module 3 is connect with power plant module 1 and communication module 4 respectively；The security module 5 is connect with the control module 3.The method includes（1）Host sends information to control module；（2）Information is sent to security module by control module；（3）Security module chooses key, and control module is back to ciphertext decryption；（4）Whether control module judges legal in plain text；（5）Control module executes corresponding order.
Description
Technical field
The present invention relates to a kind of breaker control device, in particular to a kind of switching on for improving security performance is disconnected
Road device and its implementation.
Background technology
Breaker is a kind of current switch device that can disconnect and be closed normal and abnormal circuit, is one kind in circuit
Common electrical equipment.Traditional breaker has a single function, and the complex control order that both None- identified host is sent can not be fed back
The implementing result of order.The many accidents occurred on existing breaker are all due to breaker after host transmission control command
There is no execution and caused by.With the development of science and technology, more complicated control requirement is proposed to breaker.
The present inventor's numerous studies, it has been observed that traditional breaker cannot achieve the communication between host, host without
Method obtains the executive condition of the current state and control command of switch, it is necessary to it is next real to research and develop a kind of breaker with encryption function
On the one hand the two-way communication of existing switch controlling device and host can make host more easily understand the current shape of switch in this way
State, host can also timely be fed back to after having executed order by the other hand switching, existing to overcome conventional circuit breaker not adapt to
For the demand for development of equipment, realize the control command be capable of receiving host and sent with host two-way interaction, also can in time by
The novel breaker that the executive condition of order is fed back.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of switching on breaker and in fact for improving security performance
Existing method, the present invention are capable of the control command of receiving host, and control stepper motor carries out the operation of switching on.Meanwhile the present invention
It can support various communications protocols, have and be directed to various protocols conversion function, increase the operating mode of breaker, facilitate master
Eedle carries out more accurately control to the current state of breaker.This has the automatic switching on breaker of the logical energy of communication can
Active and main-machine communication, are sent to host, so that host is better understood by the operating status of breaker by oneself state.
The purpose of the present invention is what is realized using following technical proposals：
A kind of switching on breaker for improving security performance, the breaker includes contact system, arc quenching system, behaviour
Make mechanism, buckle releaser and shell, it is improved in that the switching on breaker includes power plant module 1, power module 2, control
Molding block 3, communication module 4 and security module 5；
The power module 2 is connect with the power plant module 1, power module 2, control module 3 and communication module 4 respectively；
The control module 3 is connect with power plant module 1 and communication module 4 respectively；
The security module 5 is connect with the control module 3.
Preferably, the power plant module 1 includes stepper motor and transmission gear；The stepper motor band nutating gear control
The switch of breaker processed is closed.
Further, the stepper motor include rotate forward, invert, the pattern that is stopped respectively correspondence operate a switch and close a floodgate
With the stepper motor for waiting for control command.
Preferably, the power module 2 includes power input unit, power conversion unit, voltage stabilizing rectification unit and power supply
Output unit.
Preferably, the control module 3 includes control stepper motor, receives communication module signal and send inquiry and control
Order and the programmable chip for maintaining trip avoidance function.
Preferably, the security module 5 includes the not of the same trade or business of identity between certification breaker and host and communication encryption
The key for function of being engaged in.
The present invention is based on another object provide it is a kind of for improving the switching on breaker implementation method of security performance,
It thes improvement is that, the method includes
（1）Host sends information to control module；
（2）Information is sent to security module by control module；
（3）Security module chooses key, and control module is back to ciphertext decryption；
（4）Whether control module judges legal in plain text；
（5）Control module executes corresponding order.
Preferably, the step（1）Including the information that communication module receiving host is sent, identifies and be sent to control after converting
Molding block.
Preferably, the step（3）Key is chosen according to the cipher key index in information including security module, ciphertext is decrypted
After return to control module.
Preferably, the step（4）Including control module with judging whether the order of host is legal according to the plaintext after decryption.
Preferably, the step（5）Including
Legal then control module control power plant module is ordered to execute corresponding order；With
It orders illegal, then returns to error message to communication module, error-free information is combined into host by communication module can
The message of reception, and it is sent to host.
Preferably, the method includes
（1）Host sending device activation command；
（2）Breaker responds activation command；
（3）Host sends authentication order；
（4）Breaker response identity authentication command；
（5）Host sends key agreement order；
（6）Breaker response key negotiates order；
（7）Host sends control command；
（8）Breaker feeds back executive condition.
Compared with the prior art, beneficial effects of the present invention are：
1, the present invention provides a kind of implementation method for improving the switching on breaker of security performance, can realize automatic
Switching on function.The degree of automation for improving breaker saves a large amount of costs of labor.
2, the present invention provides a kind of implementation method for improving the switching on breaker of security performance, increases breaker
Communication function.The content that breaker can communicate between host is more comprehensive, increases the intelligence degree of breaker.
3, several business cipher keys, separately protected each single item business are stored in safety chip in the present invention.Prevent one it is close
Key after being cracked all business be all on the hazard.
4, the session key of host and breaker prevents attacker from passing through interception using the form of one-time pad in the present invention
Communication message before starts Replay Attack.
5, security module is added in the control section of breaker in the present invention.It can realize the authentication and encryption to host
Communication, effectively avoids the case where breaker is forged host computer control, and deposited for each functional independence in security module
A key is stored up, even if attacker has cracked certain key and also cannot achieve complete control to breaker, can not also interfere it
The normal execution of his function.
Description of the drawings
Fig. 1 is overall structure diagram provided by the invention.
Fig. 2 is equipment provided by the invention and main-machine communication flow diagram.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings.
Breaker is also referred to as automatic air-break switch, can be used to connect and disjunction load circuit, it is also possible to control infrequently
The motor of starting.Its function is equivalent to knife switch, overcurrent relay, no-voltage relay, electrothermal relay and earth leakage protective
The function summation of the electrical appliance parts such as device or whole, is a kind of important protection electric appliance in low-voltage network.
Breaker has multi-protective function（Overload, short circuit, low-voltage protection etc.）, working value is adjustable, breaking capacity is high,
The advantages that easy to operate, safe, so being widely used.Structure and operation principle low-voltage circuit breaker are by operating mechanism, contact, guarantor
Protection unit（Various buckle releasers）, the compositions such as arc quenching system.
The main contacts of breaker is by manual operation or electric switch-on.After main contacts is closed, free tripping mechanism will be led
It locks on closing position contact.The coil of overcurrent trip and the thermal element of thermal trip are connected with main circuit, and under-voltage is de-
Detain the coil and power sources in parallel of device.When short circuit or heavy overload occur for circuit, the armature of overcurrent trip is attracted, and makes freedom
Tripping mechanism acts, and main contacts disconnects main circuit.When circuit overloads, the fever of the thermal element of thermal trip makes curved on bimetal leaf
Song pushes free tripping mechanism action.When circuit under-voltage, the armature of under-voltage release discharges.Also make automatically jumping machine
Structure acts.Shunt release is then used as far distance controlled to use, in normal work, what coil was powered off, needing distance control
When processed, starting button is pressed, coil is made to be powered.
A kind of switching on breaker for improving security performance provided by the invention is as shown in Figure 1, the breaker includes
Power plant module 1, power module 2, control module 3, communication module 4, security module 5；The power module 2 respectively with the power
Module 1, control module 3 and communication module 4 connect；The control module 3 respectively with power plant module 1, power module 2, communicate mould
It block 4, security module 5 and connect.
Power plant module 1 includes stepper motor and transmission gear, and killer switch is connected by the gear that stepper motor drives,
The closure of killer switch is directly controlled, stepper motor includes rotating forward there are three types of operating mode, reversion and stopping, point
It Dui Ying not operate a switch, close a floodgate and wait for three kinds of control commands.
Power module 2 includes power input, and power supply conversion, voltage stabilizing rectification and power supply export four parts.Power input is
The function of common 220 volts of alternating currents, power supply conversion is to convert alternating current to direct current, and the function of voltage stabilizing rectification is to remain defeated
Go out the stabilization of voltage, the stable voltage of power supply output gives power plant module, control module and communication module power supply respectively.
Control module 3 is the peripheral circuit of a chip and it with programing function, and control module can be completed pair
Control the analysis of signal, and stepper motor effectively controlled according to order, the executive condition of trace command to host into
Row feedback；Control module can receive the signal that communication module sends over, and can reply the inquiry and control of communication module
System order.Control module also has the function of that tripping maintains, after control module receives trip signal and runs succeeded, if detection
If being closed to killer switch, switch is restored to off-state by control module by stepper motor is controlled.
Communication module 4 is the forwarding unit between host and control module, and one side communication module receiving host is transmitted across
Protocol conversion is carried out after the order come, and is sent to control module, another aspect communication module receives the letter that control module is replied
After breath, the communication protocol for being converted to host support is transmitted to host.Communication module can support common communication protocol and association
Conversion between view, such as RS485, RS232, TCP/IP, it is infrared etc..
The function of security module 5 is authentication and the communication encryption realized between breaker and host.In security module
Store the key for having corresponded to different business function, such as authentication key, Query Information key operates a switch and key and closes a floodgate close
Key etc..
A kind of switching on breaker implementation method for improving security performance of the present invention is specific as follows：
The information sended over by host is received by communication module, is recognized and converted into the letter that module can be handled in order to control
Breath, is sent to control module；
Control module forwards the information to security module；
Security module chooses correct key according to the cipher key index in information, and control mould is returned to after being decrypted to ciphertext
Block；
Whether control module is legal with judging the order of host according to the plaintext after decryption；
If order it is legal if control power plant module and execute corresponding order, if order is illegal, return error message to
Communication module, error-free information is combined into the message that host can receive by communication module, and is sent to host.
As shown in Fig. 2, the communication process between the good switching on breaker and host of safety of the present invention includes following step
Suddenly：
A, host sending device activation command；
B, breaker responds activation command；
C, host sends authentication order；
D, breaker response identity authentication command；
E, host sends key agreement order；
F, breaker response key negotiates order；
G, host sends control command；
H, breaker replys executive condition.
Embodiment
Illustrate the operation principle of the present invention by taking host computer control circuit breaker trip as an example below, it is specific as follows：
First, host sends the 4 continuous wake-up commands of byte FE and protocol code 01 as breaker to breaker,
It is RS485 that communication module, which receives the order current communication protocol is arranged, and control module sends out the state 01 of current breaker
Communication module is given, communication module replys the order of host, and the state of current breaker is communicated with RS485 and is sent to host,
Complete the first time session of host and breaker；Host sends authentication order 68 23 01 00 00 00 00 6,803 20
32 33 33 3A 37 36 35 34 22 35 60 CE DC D2 E9 69 14 71 02 11 EA E1 26 1E 56 34
3333 33 33 33 33 A7 16, wherein 03 20 32 33 33 3A representative capacity certifications of command word, 37 36 35 34 22
35 69 14 71 02 11 EA E1 of 60CE DC D2 E9,26 1E 56 34 33 33 33 33 33 33 are SM1 algorithms
The security module of encrypted ciphertext, breaker decrypts ciphertext with authentication key, judges whether host identities are legal, if
It is legal, then it sends authentication success message and gives host 68 23 01 00 00 00 00 68 83 10 32 33 33 3A 9C
3A D5 5,355 38 46 63 55 38 46 53 B3 16, wherein 9C 3A D5 53 55 38 46 63 55 38 46 53
For a part for this session key；Host sends trip signal to breaker, and the encryption key that host uses is last time message
The key of middle key part and tripping cipher key combinations Cheng Xin, correctly control power plant module executes tripping behaviour afterwards for breaker verification command
Make, and the implementing result of the operation is sent to host.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail with reference to above-described embodiment for pipe, those of ordinary skills in the art should understand that：Still
The specific implementation mode of the present invention can be modified or replaced equivalently, and without departing from any of spirit and scope of the invention
Modification or equivalent replacement, are intended to be within the scope of the claims of the invention.
Claims (1)
1. a kind of implementation method for improving switching on breaker safe performance, the switching on breaker includes contact system
System, arc quenching system, operating mechanism, buckle releaser and shell, which is characterized in that the switching on breaker further include power plant module 1,
Power module 2, control module 3, communication module 4 and security module 5；
The power module 2 is connect with the power plant module 1, control module 3 and communication module 4 respectively；
The control module 3 is connect with power plant module 1 and communication module 4 respectively；
The security module 5 is connect with the control module 3；
The power plant module 1 includes stepper motor and transmission gear；The stepper motor controls breaker with nutating gear
Switch is closed；
Killer switch is connected by the gear that stepper motor drives, stepper motor includes rotating forward there are three types of operating mode, reversion
And stopping, it is corresponding respectively to operate a switch, close a floodgate and wait for three kinds of control commands；
The security module 5 includes the close of the different business function of the identity and communication encryption between certification breaker and host
Key；
The power module 2 includes power input unit, power conversion unit, voltage stabilizing rectification unit and power output unit；
The control module 3 includes control stepper motor, receives communication module signal and send inquiry and control command and maintenance
The programmable chip of trip avoidance function；
The implementation method includes：
(1) host sends information to control module；
(2) information is sent to security module by control module；
(3) security module chooses key, and control module is back to ciphertext decryption；
(4) whether control module judges legal in plain text；
(5) control module executes corresponding order；
The step (1) includes the information that communication module receiving host is sent, and identifies and is sent to control module after converting；
The step (3) includes that security module chooses key according to the cipher key index in information, and control is returned to after being decrypted to ciphertext
Molding block；
The step (4) includes control module with judging whether the order of host is legal according to the plaintext after decryption；
The step (5) includes that legal then control module control power plant module is ordered to execute corresponding order；It is illegal with ordering,
Error message is then returned to communication module, error-free information is combined into the message that host can receive by communication module, and is sent to
Host；
Communication process between the switching on breaker and host includes：
A, host sending device activation command；
B, breaker responds activation command；
C, host sends authentication order；
D, breaker response identity authentication command；
E, host sends key agreement order；
F, breaker response key negotiates order；
G, host sends control command；
H, breaker feeds back executive condition.
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| CN201410107000.1A CN103841116B (en) | 2014-03-21 | 2014-03-21 | A kind of switching on breaker and its implementation for improving security performance |
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| CN201410107000.1A CN103841116B (en) | 2014-03-21 | 2014-03-21 | A kind of switching on breaker and its implementation for improving security performance |
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| CN103841116A CN103841116A (en) | 2014-06-04 |
| CN103841116B true CN103841116B (en) | 2018-08-14 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036983B (en) * | 2014-06-20 | 2016-04-20 | 国家电网公司 | Driven off by shaft automatic switching on devices and methods therefor in a kind of employing |
| CN104635546A (en) * | 2015-02-16 | 2015-05-20 | 大连鼎创科技开发有限公司 | Non-leakage type single firing wire switching system and working method thereof |
| CN107393164A (en) * | 2017-07-10 | 2017-11-24 | 天津工业大学 | Underground charging pile intelligent management system |
| CN108535639A (en) * | 2018-03-27 | 2018-09-14 | 江苏卡欧万泓电子有限公司 | A kind of method of automatic detection intelligent electric meter relay switching on |
| CN112770320A (en) * | 2020-12-27 | 2021-05-07 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker communication method and device based on dynamic secret key |
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| CN102035259A (en) * | 2010-12-16 | 2011-04-27 | 安徽省电力公司淮南供电公司 | Remote control system for resident power cut and power transmission |
| CN203387297U (en) * | 2013-06-17 | 2014-01-08 | 国网辽宁省电力有限公司大连供电公司 | AC low-voltage air circuit breaker |
| CN103606492A (en) * | 2013-11-26 | 2014-02-26 | 江苏省电力公司常州供电公司 | Portable remote control device for switch-off and switch-on of circuit breaker of substation |
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2014
- 2014-03-21 CN CN201410107000.1A patent/CN103841116B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035259A (en) * | 2010-12-16 | 2011-04-27 | 安徽省电力公司淮南供电公司 | Remote control system for resident power cut and power transmission |
| CN203387297U (en) * | 2013-06-17 | 2014-01-08 | 国网辽宁省电力有限公司大连供电公司 | AC low-voltage air circuit breaker |
| CN103606492A (en) * | 2013-11-26 | 2014-02-26 | 江苏省电力公司常州供电公司 | Portable remote control device for switch-off and switch-on of circuit breaker of substation |
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