CN204316330U - A kind of Essential Safety direct current system - Google Patents
A kind of Essential Safety direct current system Download PDFInfo
- Publication number
- CN204316330U CN204316330U CN201420842636.6U CN201420842636U CN204316330U CN 204316330 U CN204316330 U CN 204316330U CN 201420842636 U CN201420842636 U CN 201420842636U CN 204316330 U CN204316330 U CN 204316330U
- Authority
- CN
- China
- Prior art keywords
- port
- output
- power tube
- batteries
- chip microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of Essential Safety direct current system, the input of this system connects two-way three-phase alternating-current supply simultaneously, the output of this system is connected with closing bus bar with control bus respectively, comprise the batteries of many group paired runnings, every group storage battery group has charge circuit corresponding thereto, non-isolated feeds out loop and isolation feeds out loop, batteries charge circuit respectively and corresponding thereto, non-isolated feeds out loop and feeds out loop with isolation and be connected, wherein, output after many non-isolated feed out loop parallel connection is connected with closing bus bar, output after many isolation feed out loop parallel connection is connected with control bus.System reliability of the present utility model is high, cost is low, do not increase investment and the maintenance cost of batteries, can effectively avoid when transformer station entirely stand power failure or Power Plants have a power failure time batteries can not to discharge due to fault the generation of situation, thus avoid transformer station entirely stand power failure or Power Plants have a power failure after fault spread.
Description
Technical field
The utility model relates to a kind of Essential Safety direct current system being applicable to power plant, transformer station, belongs to technical field of power systems.
Background technology
Direct current system is often applied to the place that all kinds of transformer station and firepower, hydraulic power plant etc. need to use DC equipment; direct current system is the important component part of electric power secondary system; be the basis of electric power system control and protection, be also guarantee that accident can obtain the guarantee of fast processing simultaneously.When AC network break down cause transformer station entirely stand power failure or Power Plants have a power failure time, if batteries now for subsequent use is short-circuited owing to safeguarding not in place, open circuit or battery extremely can not regular picture time, not only can make maintainer cannot the fault of fast processing AC network, even also may cause more serious accident, in order to effectively ensure transformer station, the safe and stable operation of power plant and even whole electrical network, need the adverse effect taking measures to prevent from bringing due to batteries fault, measure common at present has following several: 1 adopts two group storage battery groups, the battery data logging device of 2 employing tape test internal resistance functions, 3 adopt high power discharge method to detect battery group capacity, take measures 1 words need extra to increase by a group storage battery group, not only invests maintenance cost and improve, and this two group storage batteries group is not paired running, so can not really deal with problems, and the scheme internal resistance of measure 2 does not have strict mathematical relationship with between battery capacity, life-span and the capacity of predicting storage battery cannot be removed according to the internal resistance value of single battery, can only pass through the continuous Cumulate Sum quantitative analysis of internal resistance test data, just can infer battery capacity variation tendency and life situations, so measure 2 not only method complexity, and practicality is not strong, in practice, easily there is large error, the scheme of measure 3 is a kind of method of periodic detection, is not on-line checkingi, so can not understand the true capacity of batteries in real time.Therefore, the exploitation of the Essential Safety direct current system that a kind of reliability is high, cost is low is necessary.
Utility model content
Utility model object: technical problem to be solved in the utility model is to provide the Essential Safety direct current system that a kind of reliability is high, cost is low.
For solving the problems of the technologies described above, the technological means that the utility model adopts is:
A kind of Essential Safety direct current system, the input of this system connects two-way three-phase alternating-current supply simultaneously, the output of this system is connected with closing bus bar with control bus respectively, comprise the batteries of many group paired runnings, every group storage battery group has charge circuit corresponding thereto, non-isolated feeds out loop and isolation feeds out loop, batteries charge circuit respectively and corresponding thereto, non-isolated feeds out loop and feeds out loop with isolation and be connected, wherein, output after many non-isolated feed out loop parallel connection is connected with closing bus bar, output after many isolation feed out loop parallel connection is connected with control bus.
Wherein, described batteries is 2 ~ 3 groups, and this 2 ~ 3 group storage battery group is for adopting paired running.
Further preferably, described charge circuit comprises high-frequency charger; Described non-isolated feeds out loop and comprises single chip machine controlling circuit 1, non-isolation type DC/DC converter and output diode; Described isolation feeds out loop and comprises single chip machine controlling circuit 2, isolated form DC/DC converter and output diode; Described high-frequency charger connects the input of described batteries, the output of described batteries is connected with described non-isolation type DC/DC converter and isolated form DC/DC converter respectively, the output of described single chip machine controlling circuit 1 is connected with described non-isolation type DC/DC converter, the output of described non-isolation type DC/DC converter is connected with described output diode, the output of described single chip machine controlling circuit 2 is connected with described isolated form DC/DC converter, and the output of described isolated form DC/DC converter is connected with described output diode.
Further preferably, described non-isolation type DC/DC converter comprises batteries input Ubat+, Ubat-and output U1+, U1-, batteries input Ubat+ with Ubat-end is connected by electric capacity C1, output U1+ with U1-is connected by electric capacity C2, one end of inductance L 1 connects one end of batteries input Ubat+ and electric capacity C1 respectively, the other end of inductance L 1 connects the collector electrode of power tube Q and the anode of diode D respectively, the emitter of power tube Q connects batteries input Ubat-respectively, the other end of electric capacity C1, one end of electric capacity C2 and output U1-, the grid of power tube Q connects PWM drive singal end, the signal of PWM end is provided by single chip machine controlling circuit 1, the negative electrode of diode D connects the other end of batteries output U1+ and electric capacity C2 respectively.
Further preferably, described non-isolation type DC/DC converter comprises Infineon's IGBT module, and wherein IGBT module comprises power tube Q and diode D.
Further preferably, described isolated form DC/DC converter comprises batteries input Ubat+, Ubat-and output U2+, U2-, batteries input Ubat+ with Ubat-end is connected by filter capacitor C3, and output U2+ with U2-is connected by filter capacitor C4, power tube Q1, power tube Q2, power tube Q3, power tube Q4 selects IGBT module, described power tube Q1, power tube Q2, the grid of power tube Q3 and power tube Q4 respectively with PWM1, PWM2, PWM3 with PWM4 control signal input is connected, control signal input PWM1, PWM2, the signal of PWM3 and PWM4 is provided by single chip machine controlling circuit 2, the emitter of described power tube Q1 connects the collector electrode of power tube Q3 and the one end on the former limit of high-frequency isolation transformer T respectively, the emitter of described power tube Q2 connects the collector electrode of power tube Q4 and the other end on the former limit of high-frequency isolation transformer T respectively, and the emitter of described power tube Q3 connects the emitter of power tube Q4 respectively, one end of filter capacitor C3, grounding ports and batteries input Ubat-, the emitter of described power tube Q4 connects the emitter of power tube Q3 respectively, one end of filter capacitor C3, the secondary of grounding ports and batteries input Ubat-, described high-frequency isolation transformer T connects by rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, the current rectifying and wave filtering circuit that inductance L 2 and filter capacitor C4 form.
Further preferably, the single-chip microcomputer model of described single chip machine controlling circuit 1 is PIC16F72, single chip machine controlling circuit 1 is provided with two voltage sample input U1i and U1o, voltage sample input U1i series resistance R1, ground connection after resistance R2, voltage sample input U1o series resistance R3, ground connection after resistance R4, single-chip microcomputer comprises AN0 port and AN1 port, AN0 port is connected between resistance R1 and resistance R2, AN1 port is connected between resistance R3 and resistance R4, single-chip microcomputer also comprises pwm signal output port and AN2 port, pwm signal output is connected to the grid of power tube Q, single-chip microcomputer to be connected with resistance R5 ground connection by AN2 port, single-chip microcomputer is by the input current Ii of the non-isolation type DC/DC converter of AN2 port processing current sensor LEM induction simultaneously, single-chip microcomputer also comprises port one, single-chip microcomputer connects 5V voltage end by port one, single-chip microcomputer also comprises port 2 and port 3, the port 2 of single-chip microcomputer is connected with crystal oscillator respectively with port 3.
Further preferably, the single-chip microcomputer model of described single chip machine controlling circuit 2 is dsPIC30F2023, and single chip machine controlling circuit 2 is provided with two voltage sample input U2i and U2o, voltage sample input U2i series resistance R6, ground connection after resistance R7, voltage sample input U2o series resistance R8, ground connection after resistance R9, single-chip microcomputer comprises AN0 port and AN1 port, connects AN0 port between resistance R6 and resistance R7, and connect AN1 port between resistance R8 and resistance R9, single-chip microcomputer also comprises PWM1, PWM2, PWM3, PWM4 signal output port and AN2 port, PWM1, PWM2, PWM3, PWM4 signal output port is connected respectively to power tube Q1, power tube Q2, power tube Q3, the grid of power tube Q4, single-chip microcomputer to be connected with resistance R10 ground connection by AN2 port, single-chip microcomputer is by the output current Io of the isolated form DC/DC converter of AN2 port processing Current Transmit induction simultaneously, single-chip microcomputer also comprises port one, single-chip microcomputer connects 5V voltage end by port one, single-chip microcomputer also comprises port 2 and port 3, and the port 2 of single-chip microcomputer is connected with crystal oscillator respectively with port 3.
Beneficial effect: compared to prior art, direct current system of the present utility model utilizes the boost function of non-isolation type DC/DC converter and isolated form DC/DC converter, batteries in original direct current system is divided into 2 ~ 3 groups, still can the direct current of stable output when one group or two group storage battery groups break down wherein, power to DC load, reach the effect of batteries redundancy, substantially increase the reliability of direct current system; In addition, by non-isolation type DC/DC converter and isolated form DC/DC converter, the utility model direct current system also judges whether batteries exists fault, thus carry out maintenance and the replacing of batteries in time.Therefore direct current system reliability of the present utility model is high, cost is low, do not increase investment and the maintenance cost of batteries, can effectively avoid when transformer station entirely stand power failure or Power Plants have a power failure time batteries can not to discharge due to fault the generation of situation, thus avoid transformer station entirely stand power failure or Power Plants have a power failure after fault spread.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the utility model Essential Safety direct current system;
Fig. 2 is the circuit theory diagrams of non-isolation type DC/DC converter in the utility model Essential Safety direct current system;
Fig. 3 is the circuit theory diagrams of isolated form DC/DC converter in the utility model Essential Safety direct current system;
Fig. 4 is the schematic diagram of the single chip machine controlling circuit 1 that in the utility model Essential Safety direct current system, non-isolation type DC/DC converter is corresponding;
Fig. 5 is the schematic diagram of the single chip machine controlling circuit 2 that in the utility model Essential Safety direct current system, isolated form DC/DC converter is corresponding;
Fig. 6 is single-chip microcomputer main control process flow figure in the utility model Essential Safety direct current system.
Embodiment
Below in conjunction with embodiment and accompanying drawing, technology contents of the present utility model is described further.
Composition graphs 1, Essential Safety direct current system of the present utility model, the input of this system connects two-way three-phase alternating-current supply for subsequent use each other simultaneously, the output of this system is connected with closing bus bar with control bus respectively, comprise many groups of (2 ~ 3 groups) batteries, 2 ~ 3 group storage battery group paired runnings, every group storage battery group has charge circuit corresponding thereto, non-isolated feeds out loop and isolation feeds out loop, batteries charge circuit respectively and corresponding thereto, non-isolated feeds out loop and feeds out loop with isolation and be connected, wherein, output after many non-isolated feed out loop parallel connection is connected with closing bus bar, output after many isolation feed out loop parallel connection is connected with control bus, when in system, wherein 1 group or 2 group storage battery groups break down out of service, the feeding out loop and still can export the power meeting all loads of trouble-free batteries,
Essential Safety direct current system of the present utility model, charge circuit comprises high-frequency charger; Non-isolated feeds out loop and comprises single chip machine controlling circuit 1, non-isolation type DC/DC converter and output diode; Isolation feeds out loop and comprises single chip machine controlling circuit 2, isolated form DC/DC converter and output diode; High-frequency charger connects the input of batteries, the output of batteries is connected with non-isolation type DC/DC converter and isolated form DC/DC converter respectively, the output of single chip machine controlling circuit 1 is connected with non-isolation type DC/DC converter, the output of non-isolation type DC/DC converter is connected with output diode, the output of single chip machine controlling circuit 2 is connected with isolated form DC/DC converter, and the output of isolated form DC/DC converter is connected with output diode.
See Fig. 2, non-isolation type DC/DC converter comprises batteries input Ubat+, Ubat-and output U1+, U1-, batteries input Ubat+ with Ubat-end is connected by electric capacity C1, output U1+ with U1-is connected by electric capacity C2, one end of inductance L 1 connects one end of batteries input Ubat+ and electric capacity C1 respectively, the other end of inductance L 1 connects the collector electrode of power tube Q and the anode of diode D respectively, the emitter of power tube Q connects batteries input Ubat-respectively, the other end of electric capacity C1, one end of electric capacity C2 and output U1-, the grid of power tube Q connects PWM drive singal end, the signal of PWM end is provided by single chip machine controlling circuit 1, the negative electrode of diode D connects the other end of batteries output U1+ and electric capacity C2 respectively, wherein, non-isolation type DC/DC converter comprises Infineon's IGBT module, and wherein IGBT module comprises power tube Q and diode D.
See Fig. 3, isolated form DC/DC converter comprises batteries input Ubat+, Ubat-and output U2+, U2-, batteries input Ubat+ with Ubat-end is connected by filter capacitor C3, and output U2+ with U2-is connected by filter capacitor C4, power tube Q1, power tube Q2, power tube Q3, power tube Q4 selects IGBT module, power tube Q1, power tube Q2, the grid of power tube Q3 and power tube Q4 respectively with PWM1, PWM2, PWM3 with PWM4 control signal input is connected, control signal input PWM1, PWM2, the signal of PWM3 and PWM4 is provided by single chip machine controlling circuit 2, the emitter of power tube Q1 connects the collector electrode of power tube Q3 and the one end on the former limit of high-frequency isolation transformer T respectively, the emitter of power tube Q2 connects the collector electrode of power tube Q4 and the other end on the former limit of high-frequency isolation transformer T respectively, and the emitter of power tube Q3 connects the emitter of power tube Q4 respectively, one end of filter capacitor C3, grounding ports and batteries input Ubat-, the emitter of power tube Q4 connects the emitter of power tube Q3 respectively, one end of filter capacitor C3, the secondary of grounding ports and batteries input Ubat-, high-frequency isolation transformer T connects by rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, the current rectifying and wave filtering circuit that inductance L 2 and filter capacitor C4 form, wherein, exports rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4 selects fast recovery diode.
See Fig. 4, the single-chip microcomputer model of single chip machine controlling circuit 1 is PIC16F72, single chip machine controlling circuit 1 is provided with two voltage sample input U1i and U1o, voltage sample input U1i series resistance R1, ground connection after resistance R2, voltage sample input U1o series resistance R3, ground connection after resistance R4, single-chip microcomputer comprises AN0 port and AN1 port, AN0 port is connected between resistance R1 and resistance R2, AN1 port is connected between resistance R3 and resistance R4, single-chip microcomputer also comprises pwm signal output port and AN2 port, pwm signal output is connected to the grid of power tube Q, single-chip microcomputer to be connected with resistance R5 ground connection by AN2 port, single-chip microcomputer is by the input current Ii of the non-isolation type DC/DC converter of AN2 port processing current sensor LEM induction simultaneously, single-chip microcomputer also comprises port one, single-chip microcomputer connects 5V voltage end by port one, single-chip microcomputer also comprises port 2 and port 3, the port 2 of single-chip microcomputer is connected with crystal oscillator respectively with port 3, single-chip microcomputer also comprises port 4, the port 4 of single-chip microcomputer connects alarm module, alarm module comprises alarm, one end ground connection of alarm, the collector electrode of the other end connecting triode Qo of alarm, the emitter of triode Qo connects 5V voltage end, one end of the base stage contact resistance Ro of triode Qo, the other end of resistance Ro is connected with the port 4 of single-chip microcomputer.
See Fig. 5, the model of single chip machine controlling circuit 2 single-chip microcomputer is dsPIC30F2023, and single chip machine controlling circuit 2 is provided with two voltage sample input U2i and U2o, voltage sample input U2i series resistance R6, ground connection after resistance R7, voltage sample input U2o series resistance R8, ground connection after resistance R9, single-chip microcomputer comprises AN0 port and AN1 port, connects AN0 port between resistance R6 and resistance R7, and connect AN1 port between resistance R8 and resistance R9, single-chip microcomputer also comprises PWM1, PWM2, PWM3, PWM4 signal output port and AN2 port, PWM1, PWM2, PWM3, PWM4 signal output port is connected respectively to power tube Q1, power tube Q2, power tube Q3, the grid of power tube Q4, single-chip microcomputer to be connected with resistance R10 ground connection by AN2 port, single-chip microcomputer is by the output current Io of the isolated form DC/DC converter of AN2 port processing Current Transmit induction simultaneously, single-chip microcomputer also comprises port one, single-chip microcomputer connects 5V voltage end by port one, single-chip microcomputer also comprises port 2 and port 3, and the port 2 of single-chip microcomputer is connected with crystal oscillator respectively with port 3.
Composition graphs 1 and Fig. 6, the operation principle of the utility model direct current system is as follows: the batteries (DC 220V) of original direct current system divided into groups, the present embodiment is divided into 2 groups, i.e. batteries 1 and batteries 2, and the voltage of every group storage battery group is DC 110V.The single chip machine controlling circuit 1 corresponding with this group storage battery group and single chip machine controlling circuit 2 are sampled respectively by self AD unit the input voltage of this group storage battery group, when the voltage of this group storage battery group is normal, the single chip machine controlling circuit 1 of this group storage battery group and single chip machine controlling circuit 2 export the drive control signal of corresponding power pipe respectively, namely the non-isolation type DC/DC converter of this group storage battery group and the power tube of isolated form DC/DC converter all in running order, this group storage battery group voltage is increased to DC 220V by DC/DC converter, export closing bus bar and control bus to.In transformer substation/power plant when AC power normal operation, batteries 1 and batteries 2, with little multiplying power current discharge, as 0.1C electric discharge, are powered to regular load; Namely when AC power breaks down under accident conditions, the accident initial stage, batteries was with larger current multiplying power discharging, and as 1C electric discharge, power to regular load, accident loads and impact load, impact load feeds out loop power supply by the non-isolated that overload capacity is strong.
If wherein 1 group storage battery group (as battery pack 1) breaks down, batteries 1 voltage drop, batteries 1 voltage of the single chip machine controlling circuit 1 of batteries 1 and the AD unit sampling of single chip machine controlling circuit 2 does not meet just establishes condition, single chip machine controlling circuit 1 and single chip machine controlling circuit 2 send the drive singal forbidding power output pipe simultaneously, namely the non-isolation type DC/DC converter of this batteries 1 and the power tube of isolated form DC/DC converter are all in cut-off state, then this group storage battery group 1 feeds out loop no-output, simultaneity factor is reported to the police, inform that staff's batteries exists fault, need repairing or change, now load is all transferred to batteries 2 and feeds out loop.In transformer substation/power plant when AC power normal operation, batteries 2 is with times discharging current electric discharge of 2 under non-failure conditions, i.e. 0.2C electric discharge, powers to regular load; Namely when AC power breaks down under accident conditions, accident initial stage batteries 2 is with times discharging current electric discharge of 2 under failure condition, as 2C electric discharge, power to regular load, accident loads and impact load, impact load feeds out loop power supply by the non-isolated that overload capacity is strong.
Direct current system of the present utility model utilizes the boost function of non-isolation type DC/DC converter and isolated form DC/DC converter, batteries in original direct current system is divided into 2 ~ 3 groups, still can the direct current of stable output when one group or two group storage battery groups break down wherein, power to DC load, reach the effect of batteries redundancy, substantially increase the reliability of direct current system, effectively prevent on the one hand transformer station entirely stand power failure or Power Plants have a power failure after fault spread, effectively prevent on the other hand when transformer station entirely stand power failure or Power Plants have a power failure time batteries can not to discharge due to fault the generation of situation, the utility model system feeds out loop by non-isolation type and isolated form feeds out the fault that loop judges batteries, and reported to the police by the warning circuit (the buzz alarm namely on single-chip microcomputer) on the single chip machine controlling circuit 1 of this batteries, thus understand the state of batteries in time, carry out maintenance and the replacing of batteries.
Above-mentioned execution mode is the utility model preferably execution mode; but execution mode of the present utility model is not limited by the examples; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (8)
1. an Essential Safety direct current system, the input of this system connects two-way three-phase alternating-current supply simultaneously, the output of this system is connected with closing bus bar with control bus respectively, it is characterized in that: the batteries comprising many group paired runnings, every group storage battery group has charge circuit corresponding thereto, non-isolated feeds out loop and isolation feeds out loop, batteries charge circuit respectively and corresponding thereto, non-isolated feeds out loop and feeds out loop with isolation and be connected, wherein, output after many non-isolated feed out loop parallel connection is connected with closing bus bar, output after many isolation feed out loop parallel connection is connected with control bus.
2. Essential Safety direct current system according to claim 1, is characterized in that: described batteries is 2 ~ 3 groups.
3. Essential Safety direct current system according to claim 1, is characterized in that: described charge circuit comprises high-frequency charger; Described non-isolated feeds out loop and comprises single chip machine controlling circuit 1, non-isolation type DC/DC converter and output diode; Described isolation feeds out loop and comprises single chip machine controlling circuit 2, isolated form DC/DC converter and output diode; Described high-frequency charger connects the input of described batteries, the output of described batteries is connected with described non-isolation type DC/DC converter and isolated form DC/DC converter respectively, the output of described single chip machine controlling circuit 1 is connected with described non-isolation type DC/DC converter, the output of described non-isolation type DC/DC converter is connected with described output diode, the output of described single chip machine controlling circuit 2 is connected with described isolated form DC/DC converter, and the output of described isolated form DC/DC converter is connected with described output diode.
4. Essential Safety direct current system according to claim 3, it is characterized in that: described non-isolation type DC/DC converter comprises batteries input Ubat+, Ubat-and output U1+, U1-, batteries input Ubat+ with Ubat-end is connected by electric capacity C1, output U1+ with U1-is connected by electric capacity C2, one end of inductance L 1 connects one end of batteries input Ubat+ and electric capacity C1 respectively, the other end of inductance L 1 connects the collector electrode of power tube Q and the anode of diode D respectively, the emitter of power tube Q connects batteries input Ubat-respectively, the other end of electric capacity C1, one end of electric capacity C2 and output U1-, the grid of power tube Q connects PWM drive singal end, the signal of PWM end is provided by single chip machine controlling circuit 1, the negative electrode of diode D connects the other end of batteries output U1+ and electric capacity C2 respectively.
5. Essential Safety direct current system according to claim 3, is characterized in that: described non-isolation type DC/DC converter comprises Infineon's IGBT module, and wherein IGBT module comprises power tube Q and diode D.
6. Essential Safety direct current system according to claim 3, is characterized in that: described isolated form DC/DC converter comprises batteries input Ubat+, Ubat-and output U2+, U2-, batteries input Ubat+ with Ubat-end is connected by filter capacitor C3, and output U2+ with U2-is connected by filter capacitor C4, power tube Q1, power tube Q2, power tube Q3, power tube Q4 selects IGBT module, described power tube Q1, power tube Q2, the grid of power tube Q3 and power tube Q4 respectively with PWM1, PWM2, PWM3 with PWM4 control signal input is connected, control signal input PWM1, PWM2, the signal of PWM3 and PWM4 is provided by single chip machine controlling circuit 2, the emitter of described power tube Q1 connects the collector electrode of power tube Q3 and the one end on the former limit of high-frequency isolation transformer T respectively, the emitter of described power tube Q2 connects the collector electrode of power tube Q4 and the other end on the former limit of high-frequency isolation transformer T respectively, and the emitter of described power tube Q3 connects the emitter of power tube Q4 respectively, one end of filter capacitor C3, grounding ports and batteries input Ubat-, described high-frequency isolation transformer T secondary connects by rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D4, the current rectifying and wave filtering circuit that inductance L 2 and filter capacitor C4 form.
7. Essential Safety direct current system according to claim 3, it is characterized in that: the single-chip microcomputer model of described single chip machine controlling circuit 1 is PIC16F72, single chip machine controlling circuit 1 is provided with two voltage sample input U1i and U1o, voltage sample input U1i series resistance R1, ground connection after resistance R2, voltage sample input U1o series resistance R3, ground connection after resistance R4, single-chip microcomputer comprises AN0 port and AN1 port, AN0 port is connected between resistance R1 and resistance R2, AN1 port is connected between resistance R3 and resistance R4, single-chip microcomputer also comprises pwm signal output port and AN2 port, pwm signal output is connected to the grid of power tube Q, single-chip microcomputer to be connected with resistance R5 ground connection by AN2 port, single-chip microcomputer is by the input current Ii of the non-isolation type DC/DC converter of AN2 port processing current sensor LEM induction simultaneously, single-chip microcomputer also comprises port one, single-chip microcomputer connects 5V voltage end by port one, single-chip microcomputer also comprises port 2 and port 3, the port 2 of single-chip microcomputer is connected with crystal oscillator respectively with port 3.
8. Essential Safety direct current system according to claim 3, it is characterized in that: the single-chip microcomputer model of described single chip machine controlling circuit 2 is dsPIC30F2023, single chip machine controlling circuit 2 is provided with two voltage sample input U2i and U2o, voltage sample input U2i series resistance R6, ground connection after resistance R7, voltage sample input U2o series resistance R8, ground connection after resistance R9, single-chip microcomputer comprises AN0 port and AN1 port, AN0 port is connected between resistance R6 and resistance R7, AN1 port is connected between resistance R8 and resistance R9, single-chip microcomputer also comprises PWM1, PWM2, PWM3, PWM4 signal output port and AN2 port, PWM1, PWM2, PWM3, PWM4 signal output port is connected respectively to power tube Q1, power tube Q2, power tube Q3, the grid of power tube Q4, single-chip microcomputer to be connected with resistance R10 ground connection by AN2 port, single-chip microcomputer is by the output current Io of the isolated form DC/DC converter of AN2 port processing Current Transmit induction simultaneously, single-chip microcomputer also comprises port one, single-chip microcomputer connects 5V voltage end by port one, single-chip microcomputer also comprises port 2 and port 3, the port 2 of single-chip microcomputer is connected with crystal oscillator respectively with port 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842636.6U CN204316330U (en) | 2014-12-25 | 2014-12-25 | A kind of Essential Safety direct current system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842636.6U CN204316330U (en) | 2014-12-25 | 2014-12-25 | A kind of Essential Safety direct current system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316330U true CN204316330U (en) | 2015-05-06 |
Family
ID=53138625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420842636.6U Active CN204316330U (en) | 2014-12-25 | 2014-12-25 | A kind of Essential Safety direct current system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006884A (en) * | 2014-12-25 | 2015-10-28 | 南京国臣信息自动化技术有限公司 | Intrinsically-safe direct current system |
-
2014
- 2014-12-25 CN CN201420842636.6U patent/CN204316330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006884A (en) * | 2014-12-25 | 2015-10-28 | 南京国臣信息自动化技术有限公司 | Intrinsically-safe direct current system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203312887U (en) | DC emergency power supply | |
| CN103944238B (en) | High stable is convenient to the high-power power battery safeguarded | |
| CN108155707A (en) | A kind of DC bus powered system and its control method | |
| CN104333107B (en) | Direct-current screen power source device utilizing hybrid power sources | |
| CN102280924A (en) | Uninterrupted power supply system for relay protection device | |
| CN105006884A (en) | Intrinsically-safe direct current system | |
| CN204559217U (en) | A kind of Novel direct-current power system | |
| CN203951228U (en) | Transformer station direct current system battery pack supervising device | |
| CN102843052A (en) | Rectification module of intelligent high frequency switch power supply | |
| CN202550614U (en) | Off-line discharge device of storage battery | |
| CN204316330U (en) | A kind of Essential Safety direct current system | |
| CN208461470U (en) | A kind of anti-low voltage ride through device of frequency converter | |
| CN107516935A (en) | Portable DC emergency power plant | |
| CN204129114U (en) | Transformer electric energy meter | |
| CN103595264B (en) | There is the high frequency electric source of site manual operation system | |
| CN102820655B (en) | A kind of power electronic system control method taking into account voltage support and failure current limit | |
| CN203933165U (en) | A kind of energy storage device being applied on workover rig | |
| CN202929398U (en) | Switching power supply intelligent controller | |
| CN203813535U (en) | Power supply device used for electricity larceny prevention inspection device | |
| CN207234451U (en) | A kind of online charge and discharge control of storage battery and capacity check system | |
| CN202840995U (en) | Rectifier module of intelligent high-frequency switching power supply | |
| CN203164385U (en) | Electric energy feedback detecting system for storage batteries | |
| CN106787198B (en) | A kind of AC/DC integrated power supply monitoring system and its monitoring method | |
| CN205248796U (en) | Direct -current power source screen | |
| CN204290491U (en) | Photovoltaic plant energy-saving control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171114 Address after: No. 9 Fuying road Jiangning District of Nanjing city in Jiangsu province 211100 No. 1001 East U Valley Nanjing international port Patentee after: Nanjing State Secretary DC Distribution Technology Co., Ltd. Address before: Yudaojie Baixia District of Nanjing City, Jiangsu province 210000 No. 33 Taisho investment building four floor B block Patentee before: Nanjing Golden Cooperate Information & Automation Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |