CN106502229A - Thermal power plant's DCS system prevents the method that thermal resistance protects failure - Google Patents
Thermal power plant's DCS system prevents the method that thermal resistance protects failure Download PDFInfo
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- CN106502229A CN106502229A CN201611228232.8A CN201611228232A CN106502229A CN 106502229 A CN106502229 A CN 106502229A CN 201611228232 A CN201611228232 A CN 201611228232A CN 106502229 A CN106502229 A CN 106502229A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000004224 protection Effects 0.000 claims abstract description 55
- 238000013461 design Methods 0.000 claims abstract description 14
- 238000005457 optimization Methods 0.000 claims abstract description 10
- 241001347978 Major minor Species 0.000 claims abstract description 7
- 230000005856 abnormality Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 4
- 230000005619 thermoelectricity Effects 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010977 unit operation Methods 0.000 abstract description 4
- 208000033999 Device damage Diseases 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41835—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by programme execution
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention belongs to thermal power generation unit automatic control technology field; more particularly to a kind of thermal power plant's DCS system prevents the method that thermal resistance protects failure; specifically thermal power generation unit prevents the method that resistance and temperature protects failure; can be used for the rectification of thermal power generation unit resistance and temperature protection system, lift the ability that unit protection system in heat power engineering prevents misoperation.With the resistance and temperature protection system of the major-minor machine equipment of thermal power plant as optimization design object, the spurious signal produced due to thermal resistance signal line open circuit or virtual connection is shielded, prevent resistance and temperature signal liter speed too fast and cause equipment mistrip.Have field adjustable process simple, be easy to the distinguishing feature of Project Realization.The reliability of unit DCS protection system in heat power engineering is effectively improved, reduces misoperation event occurrence rate, reduced unit tripping and device damage accident occurs; reduce that unit is non-stops number of times; reduces cost, improves profit margin, to improving full property and the economy important in inhibiting of thermal power unit operation.
Description
Technical field
The invention belongs to thermal power generation unit automatic control technology field, more particularly to a kind of thermal power plant's DCS system is prevented
The method that thermal resistance protects failure, specifically thermal power generation unit prevent the method that resistance and temperature protects failure, can be used for fire
The rectification of power generator group resistance and temperature protection system, lifts the ability that unit protection system in heat power engineering prevents misoperation.
Background technology
There is substantial amounts of resistance and temperature defence program, machine in the thermal power generation unit distributed monitoring control system of modernization
The bearing temperature protective system in heat power of the important main auxiliary machine of group is highly important, the indispensable ingredient in one, thermal power plant,
Have a very important role to improving the major-minor equipment reliability of operation of unit and safety.Certain threshold is reached in bearing temperature
Value, during the failure of possible initiation serious consequence, defence program automatic cutting equipment power supply, so as to soften failure, shutdown is to be repaired, keeps away
Exempt from great device damage and human casualty accident.
In recent years, application of the heat control system by advanced distributed monitoring control system in thermal power plant has obtained prominent flying
The development that pushes ahead vigorously, almost all of important major-minor machine equipment are equipped with thermal resistance bearing or coil windings temperature protection.Thermal resistance
Signal is opened a way, and signal will become big moment, if not being any limitation as will result directly in equipment mistrip.
According to the relevent statistics, either capital generating unit or production and operation unit, due to thermal resistance signal open circuit broken string, empty for root
Connect, measuring point maintenance etc. caused by reason protection system misoperation happen occasionally, cause certain harm to the normal operation of unit, and
Make enterprise suffer unnecessary economic loss, how to prevent resistance and temperature protection failure in unit DCS system from becoming thermal resistance
The problem for needing to solve in temperature protection, it will be very necessary which is rectified and improved.
In April, 2014, National Energy Board has promulgated newest《Prevent 25 important requirements of power generation accident》,
Design, the protection system of existing unit to preventing protective system in heat power failure from proposing new programmatic requirement, for new-built unit
Assessment has important directive significance.Herein by the guidance requirement of newest power industry code, in conjunction with each research institution in recent years
The example experience designed by fired power generating unit protection system in heat power engineering, it is proposed that a kind of perfect prevent DCS system resistance and temperature
Signal protection failure method.
By set forth herein method carry out unit thermal resistance protection system rectification, can Specification Design flow process, simplify implement step
Suddenly design defect is reduced, is easy to debug and is put into actual motion；
Content of the invention
For above-mentioned problems of the prior art, the invention provides a kind of thermal power plant's DCS system prevents thermal resistance from protecting
The method of failure, its purpose is to effectively verify existing thermal power generation unit resistance and temperature protection system, prevents
Resistance and temperature protection failure causes misoperation, improves the security reliability of thermal power unit operation, reduces the operation of production unit
Cost, improves the profit margin of production and operation enterprise.
In order to realize that foregoing invention purpose, the present invention are achieved through the following technical solutions：
Thermal power plant's DCS system prevents the method that thermal resistance protects failure, is protected with the resistance and temperature of the major-minor machine equipment of thermal power plant
Protecting system is optimization design object, shields the spurious signal produced due to thermal resistance signal line open circuit or virtual connection, prevents thermoelectricity
It is too fast and cause equipment mistrip that resistance temperature signal rises speed；Implement step as follows：
The first step：Collection unit main frame, subsidiary engine design data data, are fully understood by unit resistance and temperature conservation status, operation
Mode, operational factor；
Second step：Design resistance and temperature protection optimized algorithm, completes module encapsulation；
3rd step：Module optimization is carried out to all thermal resistance protection measurements programs, and carries out experimental test.
Thermal power plant's main frame includes：Boiler body, turbine body, electromotor；Power station auxiliary includes：Feed pump,
Condensate pump, water circulating pump, axle water supply pump, stove water pump, pressure fan, induced-draught fan, primary air fan, coal pulverizer.
The resistance and temperature protection optimized algorithm is as follows：
（1）System automatic detection resistance and temperature measuring point quality, if measuring point quality is changed into " bad point ", cuts off this measuring point automatically
Temperature protection, and abnormality enters acoustooptic alarm system；
（2）Algorithm constantly detects temperature raising speed rate α in any instant T0 seconds, unit for DEG C/sec, if α rises a speed threshold more than default
Value Δ 0, represents thermal resistance measuring point temperature rise rate exception, now cuts off automatically the temperature protection of this measuring point, prevent protection system mistake
Action excision equipment, and abnormality enters acoustooptic alarm system；
（3）When resistance and temperature measuring point DCS system measured value exceedes device temperature rotection thresholds Δ 1, and system is not by above-mentioned bar
When part cuts off, protection instruction action output, system automatically cut off the device power supply (DPS)；
（4）In order to prevent resistance and temperature signal, jitter causes false command to send in short-term, adds delay time module T1 to enter
Row shielding；
（5）Reset terminal adds hand-reset mode using automatic detection, when thermal resistance temperature surveying value is less than rotection thresholds Δ 1, and
When not possessing above-mentioned excision condition, reset the failure, and temperature protection function is normally put into again；
（6）Thermal resistance measuring point abnormality detection state enters DCS sound and light alarms；
（7）System and history recollect system, point out failure to occur, and after pending fault is excluded, recovery system normally runs.
（8）The algorithm is encapsulated, new module is formed, is easy to engineering debugging and is realized.
The new module is dual input signal：Resistance and temperature measuring point and operator's reset key；New module is lose-lose
Go out signal：Resistance and temperature protection act instruction output and abnormality are exported；
The new module needs to set and the parameter of debugging has：Time constant T0, presets and rises rate-valve value Δ 0, temperature protection
Threshold value Δ 1, delay time module T1.
The invention has the beneficial effects as follows：
The present invention by existing unit protective system in heat power control system, with clearly defined objective, process approach system perfecting, field adjustable process
Simply, it is easy to Project Realization, specifically：
（1）The method for preventing resistance and temperature from protecting failure, according to clearly, algorithm specification, interface are simple, rectification step letter
Clean clear, it is easy to operate and implements.
（2）The reliability of unit DCS protection system in heat power engineering can be effectively improved, is reduced as thermal resistance protects failure and is caused
The probability that occurs of protective system in heat power misoperation event, reduce as resistance and temperature protects failure and caused unit tripping and sets
The generation of standby damage accident.
（3）According to said method the relevant resistance and temperature defence program of DCS system is rectified and improved, resistance and temperature guarantor is reduced
Caused by shield failure, unit is non-stops number of times, reduces the unnecessary expenditure of manufacturing enterprise's operation cost, improves production and operation enterprise
The profit margin of industry, for the safety and economy that improve thermal power unit operation have great significance.
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further detail, but does not receive the present embodiment institute
Limit.
Description of the drawings
Fig. 1 is inventive algorithm schematic diagram；
Fig. 2 is module encapsulation of the present invention and application schematic diagram；
Fig. 3 is application flow schematic diagram of the present invention.
Specific embodiment
The present invention is a kind of method that thermal power plant's DCS system prevents that thermal resistance from protecting failure, and as shown in Figure 1-Figure 3, the present invention is
With the resistance and temperature protection system of the major-minor machine equipment of thermal power plant as optimization design object, according to State Grid's industry code and rule
The related request of model, as National Energy Board's in April, 2014 promulgates《Prevent power generation accident 25 important requirements and
Establishment lexical or textual analysis》In the 9th chapter Section 4 " preventing protective system in heat power failure " a series of requirements, shield due to thermal resistance signal line open a way
Or virtual connection and the spurious signal that produces, speed is too fast and cause equipment mistrip to prevent resistance and temperature signal from rising, and the method will
The generation of thermal resistance protection misoperation instruction effectively in shielding DCS system.Implement step as follows：The first step：Collect unit
Main frame, subsidiary engine design data data, are fully understood by unit resistance and temperature conservation status, the method for operation, operational factor；Second
Step：In conjunction with State Grid's industry code and specification, design resistance and temperature protection optimized algorithm, module encapsulation is completed；3rd step：
Module optimization is carried out to all thermal resistance protection measurements programs, and carries out experimental test.
Described thermal power plant's DCS system prevents the method that resistance and temperature protects failure, is with the major-minor machine equipment of thermoelectricity
Thermal resistance measuring point protective system in heat power is optimization design object.Thermal power plant's main frame includes：Boiler body, turbine body, electromotor；Fire
Controlling Auxiliaries in Power Plants includes：Feed pump, condensate pump, water circulating pump, axle water supply pump, stove water pump, pressure fan, induced-draught fan, primary air fan,
Coal pulverizer etc..
The inventive method meets the requirement of State Grid's industry code and specification, and is fully applicable to production run,
Thermal resistance signal line open circuit or virtual connection and caused spurious signal will effectively be shielded.
Described optimization method, is that the content is effectively combined as stated above, for State Grid industry code and
The macroscopic view requirement of specification, specifically develops and there is generally adaptive optimization method.The algoritic module of exploitation is integrated with unit
In the resistance and temperature protection system of main auxiliary machine, the generation of resistance and temperature protection misoperation instruction is prevented, so as to reach protection
Equipment safety, maintains the purpose of normal safe production run.
The core concept of the present invention is that power industry code is combined with the production run practice of enterprise, carries according to code
Go out to prevent the interface algorithm of resistance and temperature protection misoperation, eliminate thermal power unit operation hidden danger to greatest extent, prevent thermal technology
The accident of protection failure occurs, it is ensured that unit safety reliably runs.
It is a set of that the inventive method is related to core algorithm, can be widely used in all resistance and temperature protections of thermal power plant after encapsulating
In system.The method core is as follows：
1. system automatic detection resistance and temperature measuring point quality, if measuring point quality is changed into " bad point ", cuts off this measuring point automatically
Temperature protection, and abnormality enters acoustooptic alarm system.
2. algorithm constantly detects temperature raising speed rate α in any instant T0 seconds, unit for DEG C/sec, if α rises a speed more than default
Threshold value Δ 0, represents thermal resistance measuring point temperature rise rate exception, now cuts off automatically the temperature protection of this measuring point, prevents protection system wrong
Misoperation excision equipment, and abnormality enters acoustooptic alarm system.
3. when resistance and temperature measuring point DCS system measured value exceedes device temperature rotection thresholds Δ 1, and system is not above-mentioned
When condition cuts off, protection instruction action output, system automatically cut off the device power supply (DPS).
4. in order to prevent resistance and temperature signal, jitter causes false command to send in short-term, adds delay time module T1
Shielded.
5. reset terminal is designed with automatic detection and adds hand-reset mode.When thermal resistance temperature surveying value is less than rotection thresholds
Δ 1, and when not possessing above-mentioned excision condition, reset the failure, temperature protection function is normally put into again.
6. thermal resistance measuring point abnormality detection state enters DCS acoustooptic alarm systems and history recollects system, points out failure to send out
Raw, after pending fault is excluded, recovery system normally runs.
7. the algorithm is encapsulated, new module is formed, is easy to engineering debugging and is realized.New module is dual input signal：Thermoelectricity
Resistance temperature point and operator's reset key；New module is dual output signal：Resistance and temperature protection act instruction output and exception
State- output.Need to set and the parameter of debugging has：Time constant T0, presets and rises rate-valve value Δ 0, temperature protection threshold value Δ
1, delay time module T1.
Claims (5)
1. thermal power plant's DCS system prevents the method that thermal resistance protects failure, it is characterized in that, with the thermoelectricity of the major-minor machine equipment of thermal power plant
Resistance temperature protection system is optimization design object, shields the spurious signal produced due to thermal resistance signal line open circuit or virtual connection,
Prevent resistance and temperature signal liter speed too fast and cause equipment mistrip；Implement step as follows：
The first step：Collection unit main frame, subsidiary engine design data data, are fully understood by unit resistance and temperature conservation status, operation
Mode, operational factor；
Second step：Design resistance and temperature protection optimized algorithm, completes module encapsulation；
3rd step：Module optimization is carried out to all thermal resistance protection measurements programs, and carries out experimental test.
2. thermal power plant's DCS system according to claim 1 prevents the method that resistance and temperature protects failure, its feature from existing
In thermal power plant's main frame includes：Boiler body, turbine body, electromotor；Power station auxiliary includes：Feed pump, condensate
Pump, water circulating pump, axle water supply pump, stove water pump, pressure fan, induced-draught fan, primary air fan, coal pulverizer.
3. thermal power plant's DCS system according to claim 1 prevents the method that resistance and temperature protects failure, its feature from existing
In the resistance and temperature protection optimized algorithm is as follows：
（1）System automatic detection resistance and temperature measuring point quality, if measuring point quality is changed into " bad point ", cuts off this measuring point automatically
Temperature protection, and abnormality enter acoustooptic alarm system；
（2）Algorithm constantly detects temperature raising speed rate α in any instant T0 seconds, unit for DEG C/sec, if α rises a speed threshold more than default
Value Δ 0, represents thermal resistance measuring point temperature rise rate exception, now cuts off automatically the temperature protection of this measuring point, prevent protection system mistake
Action excision equipment, and abnormality enters acoustooptic alarm system；
（3）When resistance and temperature measuring point DCS system measured value exceedes device temperature rotection thresholds Δ 1, and system is not by above-mentioned bar
When part cuts off, protection instruction action output, system automatically cut off the device power supply (DPS)；
（4）In order to prevent resistance and temperature signal, jitter causes false command to send in short-term, adds delay time module T1 to enter
Row shielding；
（5）Reset terminal adds hand-reset mode using automatic detection, when thermal resistance temperature surveying value is less than rotection thresholds Δ 1, and
When not possessing above-mentioned excision condition, reset the failure, and temperature protection function is normally put into again；
（6）Thermal resistance measuring point abnormality detection state enters DCS sound and light alarms；
（7）System and history recollect system, point out failure to occur, and after pending fault is excluded, recovery system normally runs；
（8）The algorithm is encapsulated, new module is formed, is easy to engineering debugging and is realized.
4. thermal power plant's DCS system according to claim 3 prevents the method that resistance and temperature protects failure, its feature from existing
In：The new module is dual input signal：Resistance and temperature measuring point and operator's reset key；New module is believed for dual output
Number：Resistance and temperature protection act instruction output and abnormality are exported.
5. thermal power plant's DCS system according to claim 3 prevents the method that resistance and temperature protects failure, its feature from existing
In the new module needs to set and the parameter of debugging has：Time constant T0, presets and rises rate-valve value Δ 0, temperature protection threshold
Value Δ 1, delay time module T1.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345279A (en) * | 2018-01-29 | 2018-07-31 | 华润电力（海丰）有限公司 | One kind preventing DCS system control logic protection accidentally input coefficient |
| CN110609578A (en) * | 2019-09-23 | 2019-12-24 | 翁松 | Temperature protection method, device and system for mechanical equipment |
| CN112124899A (en) * | 2020-08-19 | 2020-12-25 | 河钢股份有限公司承德分公司 | Method and system for rapidly judging and processing shutdown fault of belt conveyor |
| CN112327599A (en) * | 2020-11-03 | 2021-02-05 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Intelligent safety system of thermal power generator |
| CN113126595A (en) * | 2021-03-31 | 2021-07-16 | 武汉益邦汽车技术有限公司 | Fault processing method and system for LPG vaporizing device |
| CN113533874A (en) * | 2020-04-21 | 2021-10-22 | 北京新能源汽车股份有限公司 | Virtual connection detection method and device for auxiliary instrument panel assembly, vehicle and storage medium |
| CN114088234A (en) * | 2021-11-13 | 2022-02-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Industrial thermal resistance temperature measurement disconnection protection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314127A (en) * | 1987-06-16 | 1988-12-22 | Sumitomo Heavy Ind Ltd | Winding temperature detector |
| CN101465538A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Temperature protection method for DCS system |
| WO2014031039A2 (en) * | 2012-08-22 | 2014-02-27 | ФЕДОСОВСКИЙ, Михаил Евгеньевич | Microprocessor-based control system with backup for controlling a turbine regulation and security system |
| CN103900736A (en) * | 2014-04-11 | 2014-07-02 | 国家电网公司 | Fault handling method with broken point displayed through temperature of thermal resistor |
| CN105332744A (en) * | 2015-11-23 | 2016-02-17 | 国家电网公司 | Checking method for preventing failure of thermal process protection system of thermal generator set |
-
2016
- 2016-12-27 CN CN201611228232.8A patent/CN106502229A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314127A (en) * | 1987-06-16 | 1988-12-22 | Sumitomo Heavy Ind Ltd | Winding temperature detector |
| CN101465538A (en) * | 2007-12-19 | 2009-06-24 | 贵阳铝镁设计研究院 | Temperature protection method for DCS system |
| WO2014031039A2 (en) * | 2012-08-22 | 2014-02-27 | ФЕДОСОВСКИЙ, Михаил Евгеньевич | Microprocessor-based control system with backup for controlling a turbine regulation and security system |
| CN103900736A (en) * | 2014-04-11 | 2014-07-02 | 国家电网公司 | Fault handling method with broken point displayed through temperature of thermal resistor |
| CN105332744A (en) * | 2015-11-23 | 2016-02-17 | 国家电网公司 | Checking method for preventing failure of thermal process protection system of thermal generator set |
Non-Patent Citations (1)
| Title |
|---|
| 何冠声: "试述减少单点温度保护误动的可行性", 《大众科技》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345279A (en) * | 2018-01-29 | 2018-07-31 | 华润电力（海丰）有限公司 | One kind preventing DCS system control logic protection accidentally input coefficient |
| CN108345279B (en) * | 2018-01-29 | 2019-09-03 | 华润电力（海丰）有限公司 | One kind preventing DCS system control logic protection accidentally input coefficient |
| CN110609578A (en) * | 2019-09-23 | 2019-12-24 | 翁松 | Temperature protection method, device and system for mechanical equipment |
| CN113533874A (en) * | 2020-04-21 | 2021-10-22 | 北京新能源汽车股份有限公司 | Virtual connection detection method and device for auxiliary instrument panel assembly, vehicle and storage medium |
| CN112124899A (en) * | 2020-08-19 | 2020-12-25 | 河钢股份有限公司承德分公司 | Method and system for rapidly judging and processing shutdown fault of belt conveyor |
| CN112327599A (en) * | 2020-11-03 | 2021-02-05 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Intelligent safety system of thermal power generator |
| CN113126595A (en) * | 2021-03-31 | 2021-07-16 | 武汉益邦汽车技术有限公司 | Fault processing method and system for LPG vaporizing device |
| CN113126595B (en) * | 2021-03-31 | 2023-06-27 | 湖北普峰新能源科技有限公司 | Fault processing method and system for LPG vaporization device |
| CN114088234A (en) * | 2021-11-13 | 2022-02-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Industrial thermal resistance temperature measurement disconnection protection system |
| CN114088234B (en) * | 2021-11-13 | 2024-04-23 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Industrial thermal resistance temperature measurement broken line protection system |
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