CN201146405Y

CN201146405Y - Intelligent double power supply road-changing device

Info

Publication number: CN201146405Y
Application number: CNU2008200103525U
Authority: CN
Inventors: 孙毅彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-17
Filing date: 2008-01-17
Publication date: 2008-11-05
Anticipated expiration: 2018-01-17

Abstract

The utility model relates to field of electric power and electron and a power supply and distribution system. An intelligent dual-power supply circuit changing device is respectively provided with power supply parameter detection devices of IA1 and IA2 at the sides of two power supplies, the output ends of the power supply parameter detection devices of IA1 and IA2 are connected with a PC monitoring center, and the PC monitoring center is output and connected with an input power supply contact after the signal processing. Compared with the similar products, the intelligent dual-power supply circuit changing device has significant effects of simple structure, safety and reliability, as well as intelligent control and detection, which can not only realize the automatic input of a backup power supply when a working power supply is switched off due to faults, but also can ensure a powered load device not to be invaded by the deterioration of the parameters of the working power supply and avoid the damage on a dual-power supply mutual-input device when the circuit has the fault of short circuit is damaged during the power supply circuit changing.

Description

Intelligent duplicate power supply changes the road device

Technical field:

The utility model relates to field of power electronics and power supply-distribution system, particularly duplicate supply and throws device mutually.

Background technology:

At present, the widely used duplicate supply that (exchanges 660V and following single-phase or three-phase in, the distribution system) on the domestic and international market is thrown device (being referred to as " ATS " in the industry) mutually or is combined by mechanical chain and electric contact action that (CB level contact is the air switch main contacts to the finished product device of finishing power supply switching function, the PC level is A.C. contactor class contact), or the switching device shifter of forming by chain control by A.C. contactor, all similar.As shown in Figure 1, ATS in work input two-way power supply, two contacts always are in the state that " break " " lead to " one, determine the state (work or standby) of power supply by contact C1 or C2 " leading to " state that " breaks ".The power supply that joins with " leading to " attitude contact is a working power, the power supply that joins with " breaking " attitude contact is a stand-by power supply, it " leads to " the attitude contact and can transfer " breaking " attitude automatically to when working power has a power failure for some reason, and can transfer " leading to " attitude to by " breaking " attitude automatically, thereby finish devoting oneself to work automatically of stand-by power supply with contact that stand-by power supply joins.Casting aside the conversion speed of two-way power supply does not carry, also there are two fatal shortcomings in the current ATS product that generally uses: just realize from moving the road when 1, this device is only in the working power disappearance or near disappearance (voltage pole is low), for the working power parameter degenerate and the stand-by power supply parameter situation is unmoved relatively preferably, particularly for supply voltage too high, low excessively, harm load equipment safety such as fall and the situation in life-span is ignored; 2, for PC level duplicate supply is thrown device mutually; when throwing mutually at duplicate supply that device output near-end is short-circuited and after causing working power front end trip protection; stand-by power supply can be realized immediately from moving the road; if short trouble is for continuing class or non-automatic elimination class; what then this moment, stand-by power supply was connected will be short circuit current, and its capability value is several times as much as the rated value that duplicate supply is thrown device mutually with several times or ten.Will seriously damage duplicate supply and throw device mutually, even cause arc short circuit between the contact, lead to more serious short trouble.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned not enough problem, provide a kind of intelligent duplicate power supply to change the road device, simple in structure, that can realize main power supply when working power disappears moves the road certainly, again can be in working power parameter variation and the stand-by power supply parameter realizes relatively better the time moving the road certainly between the main power supply.

The technical scheme that the utility model is adopted for achieving the above object is: intelligent duplicate power supply changes the road device, input two-way mains side respectively installs power parameter checkout gear IA1, IA2 additional, power parameter checkout gear IA1, IA2 output connects PC Surveillance center, and output connects the input power contact after the PC Surveillance center processing signals.

Described out-put supply side installs power parameter checkout gear IA3 additional, and power parameter checkout gear IA3 and output are connected to PC Surveillance center.

Described power parameter checkout gear can be intelligent detection module, fuzzy detection module, AC/DC module, AC/AC module or transformation-rectification-filtering-sample circuit etc. for monitoring the data volume or the analog quantity device of power source voltage, electric current.

Described PC Surveillance center can be a single-chip microcomputer, industrial computer, cpu chip or logical operation and control combination circuit.

The utility model has significant effect compared with similar products: simple in structure, safe and reliable, Based Intelligent Control and detection, can realize the automatic input of stand-by power supply when working power has a power failure for some reason, can guarantee the infringement that the electricity consumption load equipment is not degenerated by the working power parameter again, can also avoid existing the circuit of short trouble when power supply changes the road, to damage duplicate supply and throw device mutually.

Description of drawings

Fig. 1 throws manipulated or operated apparatus mutually for existing contact duplicate supply.

Fig. 2 changes the circuit diagram of road device for the utility model intelligent duplicate power supply.

Embodiment:

Intelligent duplicate power supply as shown in Figure 2 changes the road device, connect with out-put supply as total output in contact double power supply parallel loop, the input power supply is equipped with power parameter checkout gear IA1, IA2 respectively, total out-put supply is equipped with power parameter checkout gear IA3, power parameter checkout gear IA1, IA2, IA3 output signal are connected with PC Surveillance center respectively, and the output of PC Surveillance center links to each other with contact C1, C2.Power parameter checkout gear IA1 and IA2 can be intelligent detection module, fuzzy detection module, AC/DC module, AC/AC module or transformation-rectification-filtering-sample circuit etc.PC Surveillance center can be a single-chip microcomputer, industrial computer, programmable cpu chip, small PLC or logical operation and control combination circuit.

During application, when having major-minor timesharing, two-way input power supply can it be arranged to main electricity recovery type working method automatically by PC control centre, promptly export main power source at ordinary times, undesired or the output stand-by power supply automatically when disappearing when main power source, and deactivate automatically when main power source recovers just often stand-by power supply; When two-way input power supply is the urban network electricity source and does not have major-minor timesharing, it can be arranged to be regardless of the working method of primary and secondary, promptly after stand-by power supply is taken over job power supply, the state of can when working power is recovered, not deactivating automatically.

With 1# power work, 2# power backup is example.When duplicate supply was " major-minor type " (the 1# power supply is that main power source, 2# power supply are stand-by power supply), duplicate supply just entered the state of 1# power work, 2# power backup automatically after system powered on.C1 adhesive this moment, C2 disconnect, and have mechanical chain or electrical interlocks between the two.When overtension appears in the 1# power supply, cross low, phase shortage, fall, serious skew, when parameters such as wave distortion degenerate phenomenon, IA1 can be at once sends the undesired parameter of 1# power supply to Surveillance center PC, PC Surveillance center finds the unusual of working power parameter when the Monitoring Data of real-time IA1 of reception and IA2, just the data that automatically itself and stand-by power supply checkout gear IA2 transmitted compare, as the deviation of finding the data of IA1 and standard value is more greatly and obviously not as the parameter of IA2, will send the duplicate supply conversion instruction immediately, control the 2# power supply again behind the control 1# power source trip and close a floodgate, make the 1# power supply enter stand-by state and the 2# power supply enters operating state.Recover just often when the parameter of 1# power supply, PC Surveillance center can control duplicate supply and throw the reset condition that device comes back to 1# power work 2# power backup mutually.If it is standby type each other that duplicate supply is thrown device mutually, then there is not the branch of main power source and accessory power supply, the person that do not power on earlier this moment be a stand-by power supply for the working power person that then do not power on, after changing, power parameter is basic identical then can not to recover original power-up state as importing.

If duplicate supply output near-end is short-circuited (comprising load short circuits), PC Surveillance center can obtain short circuit information by IA1 or IA2, and the information temporary close duplicate supply stand-by power supply of throwing device mutually drops into function automatically in view of the above.After short trouble is disengaged, just can recover the standby function of hauling oneself willingly into, guarantee that reliably stand-by power supply can not miscarry in the circuit of short trouble.

Claims

1, intelligent duplicate power supply changes the road device, it is characterized in that: input two-way mains side respectively installs power parameter checkout gear (IA1, IA2) additional, power parameter checkout gear (IA1, IA2) output connects PC Surveillance center (IPC), and output connects the input power contact after the PC Surveillance center processing signals.

2, intelligent duplicate power supply according to claim 1 changes the road device, it is characterized in that: the out-put supply side installs power parameter checkout gear (IA3) additional, and power parameter checkout gear (IA3) is connected to PC Surveillance center (IPC) with output.

3, intelligent duplicate power supply according to claim 1 and 2 changes the road device, it is characterized in that: power parameter checkout gear (IA1, IA2, IA3) can be intelligent detection module, fuzzy detection module, AC/DC module, AC/AC module or transformation-rectification-filtering-sample circuit etc. for monitoring the data volume or the analog quantity device of power source voltage, electric current.

4, intelligent duplicate power supply according to claim 1 and 2 changes the road device, it is characterized in that: PC Surveillance center (IPC) can be a single-chip microcomputer, industrial computer, cpu chip or logical operation and control combination circuit.