CN105005007B - A kind of redundancy secondary power system failure detector and method - Google Patents
A kind of redundancy secondary power system failure detector and method Download PDFInfo
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Abstract
The present invention provides a kind of redundancy secondary power system failure detector and method, and the device includes the first accessory power supply in parallel, the second accessory power supply, it is characterised in that：Also include the first temperature sampling unit, second temperature sampling unit, detection control unit and an Alarm Unit, judge whether first, second accessory power supply breaks down by detecting the cooling system temperature of the first accessory power supply and the cooling system temperature of the second accessory power supply, detection means is simple, increases failure detector circuit without extra, need to only be realized by detection control unit；Mainly detected in fault detection method with the relation of mode of operation and power panel thermal component temperature, method simple practical, especially for the high-power electrical equipment system of dual power supply, there is provided further technical guarantee.
Description
Technical field
The present invention relates to redundancy secondary power system, and in particular to a kind of redundancy secondary power system failure detector and
Method.
Background technology
High-power electrical equipment at present（Such as high power UPS power supply unit）Accessory power supply design the backup of usual dual power supply and set
Meter, 2 independent identical accessory power supply inputs are in parallel, and output-parallel uses, it is therefore an objective to the reliability of power supply is improved, when
When one accessory power supply can not power extremely, another accessory power supply can also work on, and this is just high-power electrical equipment
Accessory power supply provide double shield；And accessory power supply is generally all to use the one group of isolation of inverse-excitation type AC/DC circuit evolvings
Power supply, such as+24V/0V or+15V/0V, in order to ensure the stability of supply voltage, generally it is used as by+24V or+15V
Voltage Feedback controls, and feeds back to power supply IC, such as 3845 etc., output-parallel really by diode it is mutually isolated after simultaneously
Be linked to together, it is now in parallel after power supply still+24V/0V or+15V/0V, then by these Power converts into some other electricity
Press and used inside the isolation or non-isolated power supply supply UPS equipment of grade as accessory power supply, can so substantially reduce electricity
The infringement that source failure is brought；By taking each accessory power supply generation+24V/0V as an example, in actual use due to component parameter from
Type is dissipated, although output-parallel is together, during work, only accessory power supply+24V/0V has a power output all the way, and other one
Road accessory power supply is constantly in holding state, and when there is that group of power failure of power output, another set is in holding state
+ 24V/0V devote oneself to work at once, realize the uninterrupted power supply of secondary power system, then can by adjust Voltage Feedback join
Number can be such that the output voltages of 2 groups of accessory power supplys changes in a small range, so as to so that 2 groups of power supply switch operatings, such as A groups
It is that A groups inactivity exports, B groups have power output to have power output, B group inactivitys output switching；2 groups of accessory power supplys switch work
Make, the service condition of such power device reaches unanimity substantially, improves service life, slows down power device aging speed, reduces
The generation of probability of malfunction.
But in switch operating engineering, control system control A roads accessory power supply is in work, i.e. power output, controls B
Road accessory power supply is in holding state, i.e., without power output, but if A accessory power supplys have damaged, it is defeated can not to provide power
Go out, the actual still B roads accessory power supply, and it is all that B accessory power supplys are working to control anyway, now needs to examine in work
Measure A roads power failure and alert, inform that user changes A roads power supply in time.
Judgement of the prior art to accessory power supply failure needs extra circuit, it usually needs sample respectively accessory power supply A,
Accessory power supply B electric current, cost are higher.
The content of the invention
Illustrate that, in order to be further ensured that the reliability of secondary power system, intellectuality, the present invention is set for above-mentioned analysis
A kind of failure detector and its method of redundancy accessory power supply have been counted, has monitored whether to break down in real time, so as to timely
Alarm.
The present invention is realized using following technical scheme：A kind of redundancy secondary power system failure detector, including parallel connection
The first accessory power supply, the second accessory power supply, it is characterised in that：Also include the first temperature sampling unit, second temperature sampling list
Member, detection control unit and an Alarm Unit, the first temperature sampling unit are used for the radiating for gathering the first accessory power supply
System temperature, and the temperature signal that sampling is obtained feeds back to detection control unit；The second temperature sampling unit is used to adopt
Collect the cooling system temperature of the second accessory power supply, and the temperature signal that sampling is obtained feeds back to detection control unit；The announcement
Alert unit is used for the fault warning of the first accessory power supply or the second accessory power supply, and warning information is fed back into detection control list
Member；The detection control unit is used to control the first accessory power supply, the second accessory power supply alternation, and according to the first auxiliary electricity
Whether the cooling system temperature in source, the cooling system temperature of the second accessory power supply judge the first accessory power supply, the second accessory power supply
Break down, when first accessory power supply or the second accessory power supply break down, alarm signal is sent to the Alarm Unit.
In an embodiment of the present invention, the detection control unit is used to control the first accessory power supply, the second accessory power supply
The implementation of alternation is：The output voltage for adjusting the first accessory power supply is higher than the output voltage of the second accessory power supply, makes
First accessory power supply has that power output is in running order, and the second accessory power supply is in holding state；Adjust the second accessory power supply
Output voltage be higher than the output voltage of the first accessory power supply, having the second accessory power supply, power output is in running order, the
One accessory power supply is in holding state.
Further, the output voltage of the first accessory power supply of regulation passes through described higher than the output voltage of the second accessory power supply
Detection control unit controls the Voltage loop reference value of the first accessory power supply to be more than the Voltage loop reference value of the second accessory power supply and realized；
The output voltage for adjusting the second accessory power supply is controlled higher than the output voltage of the first accessory power supply by the detection control unit
The Voltage loop reference value that the Voltage loop reference value of first accessory power supply is less than the second accessory power supply is realized.
The present invention also provides a kind of fault detection method based on above-mentioned redundancy secondary power system failure detector,
It is characterized in that：Comprise the following steps：Step S1：In current operating cycle, detection control unit control system enters the first mould
Formula working condition, the first mode working condition are in mode of operation, at the second accessory power supply for the first accessory power supply of control
In standby mode, first mode working condition enters step S2 after work a period of time；Step S2：Collection N points first aid in electricity
Source heat-dissipating system temperature Ta1, Ta2 ... TaN and N point the second accessory power supply cooling system temperature Tb1, Tb2 ... TbN, and respectively
Average value TA, TB are obtained, wherein,, N is natural number；Step S3：Judging TA-TB is
It is no to be more than or equal toIf then entering step S4, the first accessory power supply failure is otherwise judged, the detection control unit is to announcement
Alert unit sends alarm signal, and fault warning is carried out by Alarm Unit,For the temperature threshold more than 0；Step S4：Judge system
Whether system is in first mode working condition, if then going to step S5, otherwise goes to step S2；Step S5：Into next
Work period, detection control unit control system enter second mode working condition, and the second mode working condition is control
First accessory power supply is in standby mode, the second accessory power supply is in mode of operation, mode state work a period of time
Enter step S6 afterwards；Step S6：Gather N point the first accessory power supply cooling system temperature Ta1, Ta2 ... TaN and N point second
Accessory power supply cooling system temperature Tb1, Tb2 ... TbN, and average value TA, TB are obtained respectively, wherein,, N is natural number；Step S7：Judge whether TB-TA is more than or equal toIf then enter step S8, otherwise
Judge the second accessory power supply failure, the detection control unit sends alarm signal to Alarm Unit, and event is carried out by Alarm Unit
Barrier alarm；For the temperature threshold more than 0；Step S8：Judge whether system is in second mode working condition, if then turning
To step S1, step S6 is otherwise gone to.
Further, first mode working condition work a period of time is 3-10min；
Further, second mode working condition work a period of time is 3-10min；
In an embodiment of the present invention, the output that the first mode of operation described in step S1 passes through the first accessory power supply of regulation
Voltage is realized higher than the output voltage of the second accessory power supply；In step S5, second mode work is by adjusting the second accessory power supply
Output voltage higher than the first accessory power supply output voltage realize.
Further, the output voltage for adjusting the first accessory power supply passes through control higher than the output voltage of the second accessory power supply
Unit controls the Voltage loop reference value of the first accessory power supply to be more than the Voltage loop reference value of the second accessory power supply and realized；Regulation second
The output voltage of accessory power supply is higher than the electricity that the output voltage of the first accessory power supply passes through control unit the first accessory power supply of control
The Voltage loop reference value that pressure ring reference value is less than the one the second accessory power supplys is realized.
Compared with prior art, the beneficial effect of a kind of redundancy secondary power system failure detector of the present invention and method
It is：Judge first by detecting the cooling system temperature of the first accessory power supply and the cooling system temperature of the second accessory power supply,
Whether the second accessory power supply breaks down, and detection means is simple, increases failure detector circuit without extra, need to only be controlled by detecting
Unit processed is realized；Mainly examined in fault detection method with the relation of mode of operation and power panel thermal component temperature
Survey, method simple practical, especially for the high-power electrical equipment system of dual power supply, there is provided further technical guarantee.
Brief description of the drawings
Fig. 1 is a kind of redundancy secondary power system failure detector theory diagram of the present invention.
Fig. 2 is a kind of flow chart of redundancy secondary power system fault detection method of the present invention.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The invention provides a kind of redundancy secondary power system failure detector, including the first accessory power supply A in parallel,
Second accessory power supply B, it is characterised in that：Also include the first temperature sampling unit A, second temperature sampling unit B, detection control
Unit and an Alarm Unit, the first temperature sampling unit A are used for the cooling system temperature for gathering the first accessory power supply A,
And the temperature signal for obtaining sampling feeds back to detection control unit；It is auxiliary that the second temperature sampling unit B is used for collection second
Power supply B cooling system temperature is helped, and samples obtained temperature signal and feeds back to detection control unit；The Alarm Unit is used for
First accessory power supply A or the second accessory power supply B fault warning, and alarm signal feeds back to detection control unit；The detection
Control unit is used to control the first accessory power supply A, the second accessory power supply B alternations, according to the first accessory power supply A radiating system
System temperature, the second accessory power supply B cooling system temperature judge whether the first accessory power supply A, the second accessory power supply B occur event
Barrier, once one breaks down in the first accessory power supply A, the second accessory power supply B, alarm signal is sent to Alarm Unit.It is filled
Schematic diagram is put referring to Fig. 1.
The detection control unit is used to control the first accessory power supply A, the second accessory power supply B alternations, specific implementation
Mode is：Realized by the output voltage for adjusting the first accessory power supply A and the second accessory power supply B within the specific limits, regulation the
One accessory power supply A output voltage is higher than the second accessory power supply B output voltage, the first accessory power supply A is had at power output
In working condition, and the second accessory power supply B is in holding state, and the second accessory power supply B of regulation output voltage is auxiliary higher than first
Power supply A output voltage is helped, having the second accessory power supply B, power output is in running order, and the first accessory power supply A is in and treated
Machine state.
Output voltage of the output voltage higher than the second accessory power supply B for adjusting the first accessory power supply A passes through control unit control
Voltage loop reference value of the Voltage loop reference value more than the second accessory power supply B for making the first accessory power supply A is realized；The auxiliary of regulation second
Output voltage of the power supply B output voltage higher than the first accessory power supply A controls the first accessory power supply A voltage by control unit
Voltage loop reference value of the ring reference value less than the second accessory power supply B is realized；
The present invention also provides a kind of redundancy secondary power system fault detection method, the flow chart of fault detection method referring to
Fig. 2.This method comprises the following steps：Step S1：In current operating cycle, detection control unit control system enters first mode
A working conditions, the first mode A working conditions are in mode of operation, the second accessory power supply B for the first accessory power supply A of control
Enter step S2 after standby mode, a period of time that works；Step S2：Gather N point the first accessory power supply A cooling system temperature
Ta1, Ta2 ... TaN and N point the second accessory power supply B cooling system temperature Tb1, Tb2 ... TbN, and obtain respectively average value TA,
TB, its,；Step S3：Judge whether TA-TB is more than or equal to temperature thresholdIf
It is then to enter step S04, otherwise judges the first accessory power supply A failures, and alert；Step S4：Judge whether system is in first
Mode A working condition, if then going to step S05, otherwise go to step S02；Step S5：Into next work period, inspection
Observing and controlling unit control system enters first mode B working conditions, and the first mode A working conditions are the auxiliary electricity of control first
Source A is in standby mode, the second accessory power supply B is in mode of operation, enters step S6 after a period of time that works；Step S6, is adopted
Collect N point the first accessory power supply A cooling system temperature Ta1, Ta2 ... TaN and N point the second accessory power supply B cooling system temperature
Tb1, Tb2 ... TbN, and average value TA, TB are obtained respectively, wherein,；Step S7, sentences
Whether disconnected TB-TA is more than or equal toIf then entering step S08, the second accessory power supply B failures are otherwise judged, and alert；Step
Rapid S8, judges whether system is in first mode B working conditions, if then going to step S1, otherwise goes to step S6.WhereinFor temperature difference threshold value, it is a setting value, can be adjusted according to being actually needed.
In step S1, detection control unit control system enters first mode A working conditions, the first mode A work
For control, the first accessory power supply A is in mode of operation to state, the second accessory power supply B is in standby mode, and specific implementation is：
Output voltage of the output voltage higher than the second accessory power supply B for adjusting the first accessory power supply A is the auxiliary of control unit control first
Power supply A Voltage loop reference value is more than the second accessory power supply B Voltage loop reference value.
In step S5, detection control unit control system enters first mode B working conditions, the first mode A work
For control, the first accessory power supply A is in standby mode to state, the second accessory power supply B is in mode of operation, and specific implementation is：
Output voltage of the output voltage higher than the first accessory power supply A for adjusting the second accessory power supply B is the auxiliary of control unit control first
Power supply A Voltage loop reference value is less than the one the second accessory power supply B Voltage loop reference value.
Preferable detection control unit uses MCU control chips or DSP control system.
Operation principle of the present invention is：Redundant power is formed by the first accessory power supply A and the second accessory power supply B output-parallel
Backup, the first accessory power supply A, the second accessory power supply B alternations, when an accessory power supply breaks down（Inactivity exports）, separately
One accessory power supply provides power supply for load automatically.When control system enters first mode A working conditions, the first mode A works
Making state, the first accessory power supply A is in mode of operation, the second accessory power supply B is in standby mode for control, work a period of time,
If the first accessory power supply A is normal（There is power output）, the first accessory power supply A temperature slowly rises, and the second accessory power supply B
Temperature slowly decline, then TA-TB >=；If the first accessory power supply A is abnormal（Inactivity exports）, no matter how system controls
Mode of operation, the second accessory power supply B are load supplying still in working condition, then the first accessory power supply A temperature will not rise,
And the second accessory power supply B temperature still maintains a higher temperature, TA-TB ＜.When control system enters first mode B
Working condition, the first mode B working conditions are in mode of operation, at the first accessory power supply A for the second accessory power supply B of control
In standby mode, work a period of time, if the second accessory power supply B is normal（There is power output）, the second accessory power supply B temperature
Slowly rise, and the first accessory power supply A temperature slowly declines, then TB-TA >=；If the second accessory power supply B is abnormal（It is idle
Rate exports）, no matter how system controls mode of operation, and the first accessory power supply A is load supplying still in working condition, then and second
Accessory power supply B temperature will not rise, and the first accessory power supply A temperature still maintains a higher temperature, TB-TA ＜。
Judgement of the prior art to accessory power supply failure needs extra circuit, and cost is higher, and the present invention only passes through letter
Single temperature judges, you can identification failure, and alarm is produced, possess the characteristics of cost is low, method is simple.
Those skilled in the art can do on the premise of the principle and essence without prejudice to the present invention to this specific embodiment
Go out various modifications or supplement or substituted using similar mode, but these changes each fall within protection scope of the present invention.Cause
This technology of the present invention scope is not limited to above-described embodiment.
Claims (8)
1. a kind of redundancy secondary power system failure detector, including the first accessory power supply in parallel, the second accessory power supply, its
It is characterised by：Also include the first temperature sampling unit, second temperature sampling unit, detection control unit and an Alarm Unit,
The first temperature sampling unit is used for the cooling system temperature for gathering the first accessory power supply, and will sample obtained temperature
Signal feeds back to detection control unit；
The second temperature sampling unit is used for the cooling system temperature for gathering the second accessory power supply, and will sample obtained temperature
Signal feeds back to detection control unit；
The Alarm Unit is used for the fault warning of the first accessory power supply or the second accessory power supply, and warning information is fed back into inspection
Survey control unit；
The detection control unit is used to control the first accessory power supply, the second accessory power supply alternation, and according to the first auxiliary
The cooling system temperature of power supply, the cooling system temperature of the second accessory power supply judge that the first accessory power supply, the second accessory power supply are
No to break down, when first accessory power supply or the second accessory power supply break down, sending alarm to the Alarm Unit believes
Number.
2. redundancy secondary power system failure detector according to claim 1, it is characterised in that：The detection control
Unit is used to control the first accessory power supply, the implementation of the second accessory power supply alternation to be：Adjust the first accessory power supply
Output voltage is higher than the output voltage of the second accessory power supply, and having the first accessory power supply, power output is in running order, and second
Accessory power supply is in holding state；The output voltage for adjusting the second accessory power supply is higher than the output voltage of the first accessory power supply, makes
Second accessory power supply has that power output is in running order, and the first accessory power supply is in holding state.
3. redundancy secondary power system failure detector according to claim 2, it is characterised in that：The auxiliary of regulation first
The output voltage of power supply controls the first accessory power supply higher than the output voltage of the second accessory power supply by the detection control unit
Voltage loop reference value be more than the second accessory power supply Voltage loop reference value realize；The output voltage for adjusting the second accessory power supply is high
Control the Voltage loop reference value of the first accessory power supply small by the detection control unit in the output voltage of the first accessory power supply
Realized in the Voltage loop reference value of the second accessory power supply.
4. based on the fault detection method of the redundancy secondary power system failure detector described in claim 1, its feature exists
In：Comprise the following steps:
Step S1：In current operating cycle, detection control unit control system enters first mode working condition, first mould
For control, the first accessory power supply is in mode of operation to formula working condition, the second accessory power supply is in standby mode, first mode work
Make operation and enter step S2 afterwards for a period of time；
Step S2：Gather the radiating of the second accessory power supply of N point the first accessory power supply cooling system temperature Ta1, Ta2 ... TaN and N points
System temperature Tb1, Tb2 ... TbN, and average value TA, TB are obtained respectively, wherein,, N
For natural number；
Step S3：Judge whether TA-TB is more than or equal toIf then entering step S4, the event of the first accessory power supply is otherwise judged
Barrier, the detection control unit send alarm signal to Alarm Unit, fault warning are carried out by Alarm Unit,For more than 0
Temperature threshold；
Step S4：Judge whether system is in first mode working condition, if then going to step S5, otherwise go to step S2；
Step S5：Into next work period, detection control unit control system enters second mode working condition, and described
For control, the first accessory power supply is in standby mode to two modes working condition, the second accessory power supply is in mode of operation, the second mould
Formula working condition enters step S6 after work a period of time；
Step S6：Gather the radiating of the second accessory power supply of N point the first accessory power supply cooling system temperature Ta1, Ta2 ... TaN and N points
System temperature Tb1, Tb2 ... TbN, and average value TA, TB are obtained respectively, wherein,, N
For natural number；
Step S7：Judge whether TB-TA is more than or equal toIf then entering step S8, the event of the second accessory power supply is otherwise judged
Barrier, the detection control unit send alarm signal to Alarm Unit, fault warning are carried out by Alarm Unit；For more than 0
Temperature threshold；
Step S8：Judge whether system is in second mode working condition, if then going to step S1, otherwise go to step S6.
5. the fault detection method of redundancy secondary power system failure detector according to claim 4, its feature exist
In：First mode working condition described in step S1 is higher than the second accessory power supply by adjusting the output voltage of the first accessory power supply
Output voltage realize；In step S5, second mode working condition is by adjusting the output voltage of the second accessory power supply higher than the
The output voltage of one accessory power supply is realized.
6. the fault detection method of redundancy secondary power system failure detector according to claim 4, its feature exist
In：Described first mode working condition work a period of time is 3-10min.
7. the fault detection method of redundancy secondary power system failure detector according to claim 4, its feature exist
In：Described second mode working condition work a period of time is 3-10min.
8. the fault detection method of redundancy secondary power system failure detector according to claim 5, its feature exist
In：The output voltage for adjusting the first accessory power supply is auxiliary by control unit control first higher than the output voltage of the second accessory power supply
The Voltage loop reference value of power supply is helped to be more than the Voltage loop reference value realization of the second accessory power supply；
The output voltage for adjusting the second accessory power supply controls first higher than the output voltage of the first accessory power supply by control unit
The Voltage loop reference value that the Voltage loop reference value of accessory power supply is less than the one the second accessory power supplys is realized.
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| CN107290604A (en) * | 2016-04-13 | 2017-10-24 | 新巨企业股份有限公司 | The damage confirmation method of redundance type power system |
| CN106646274A (en) * | 2017-02-28 | 2017-05-10 | 中国船舶重工集团公司第七研究所 | Test method and test device for power supply system |
| CN111900788B (en) * | 2020-08-03 | 2021-12-24 | 珠海格力电器股份有限公司 | Power supply control device, magnetic suspension system and power supply control method thereof |
| CN113410898B (en) * | 2021-08-20 | 2021-11-16 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Power supply system of bidirectional inverter charger |
| CN115459427A (en) * | 2022-09-30 | 2022-12-09 | 科华数据股份有限公司 | Auxiliary power supply control method, device, equipment, uninterruptible power supply and medium |
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