CN109889035B - Automatic voltage reduction silicon chain device for emergency maintenance power supply - Google Patents
Automatic voltage reduction silicon chain device for emergency maintenance power supply Download PDFInfo
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Abstract
The invention discloses an automatic voltage reduction silicon chain device for an emergency maintenance power supply, which comprises a storage battery unit, an output bus terminal, a direct current silicon chain voltage reduction module, a direct current voltage sampling module, a relay driving module, a display, a first voltage regulation controller, a second voltage regulation controller, a manual/automatic button and a manual regulation knob. The invention has the beneficial effects that: the device integrates two control systems, and has the advantages of simple structure, few accessories and light weight; the voltage sampling module is adopted to judge whether the power supply system is connected or not, and the control system is automatically switched, so that the operation is simple, and the reliability of the device is high; reducing labor costs and equipment manufacturing costs and thus reducing the relative cost of the device.
Description
Technical Field
The invention relates to a voltage regulating device in a direct-current power supply system in the power industry, in particular to an automatic voltage reduction silicon chain device for an emergency maintenance power supply.
Background
In the direct-current power supply cabinet for the domestic electric power system at present, when a charging module charges a storage battery pack, the output voltage is higher than the rated voltage value of a control loop, and a voltage regulating device is connected between a closing power bus and a control bus in series and automatically changes the voltage value of the control bus, so that the voltage of the control bus is ensured to be in a normal range. The direct current system voltage of the substation is generally DC110V and DC 220V. When changing direct current system, in order to prevent that the substation direct current system from having a power failure, need insert emergent maintenance direct current power supply equipment, give the power supply of direct current load temporarily, in order to overhaul and salvage the direct current system of transformer substation, guarantee that the direct current system of transformer substation does not cut off the power supply, need shift original load to emergent maintenance battery charging outfit on, emergent maintenance battery charging outfit is for carrying, designs into two-sided screen, one side battery charging screen, one side feed screen. The charging screen is arranged on the direct-current emergency maintenance vehicle, the feed screen is moved from the emergency maintenance vehicle to a control room of a substation, the charging screen and the feed screen are connected through a cable, in order to be suitable for two voltage systems, two groups of automatic voltage reduction silicon chains are arranged on the feed screen to adjust voltage, and the corresponding automatic voltage reduction silicon chains are switched to be used according to different voltage systems; the automatic voltage reduction silicon chain in the feed screen can only be switched manually by maintainers according to an accessed voltage system, the workload is increased, and the device is relatively high in cost due to the increase of labor cost and equipment manufacturing cost.
Chinese patent, publication No.: CN 203596749U, published: 5/14/2014, discloses an electrodeless control bus automatic voltage regulating device, which comprises a silicon chain device, a closing bus end, a control bus end, an execution relay, an IGBT (insulated gate bipolar transistor) tube, a silicon chain voltage regulating controller and a negative bus end. The invention has the beneficial effects that: the circuit arrangement is simple and reliable, the linear voltage regulation effect of the silicon chain for voltage reduction is realized, the problem of nonlinear voltage regulation of the silicon chain for voltage reduction in the traditional direct-current power supply screen is solved, the voltage loss protection and alarm function are realized, the use effect is good, the popularization is facilitated, the device is simple in structure, the voltage reduction regulation of two voltages cannot be realized, and the function is single.
Disclosure of Invention
The invention aims to solve the problem that the existing automatic voltage reduction silicon chain cannot be connected with two voltage systems to regulate voltage, and develops an automatic regulating device suitable for the two voltage systems.
In order to achieve the technical purpose, the invention provides a technical scheme that an automatic voltage reduction silicon chain device for an emergency maintenance power supply comprises a storage battery unit, an output bus terminal, a direct current silicon chain voltage reduction module, a direct current voltage sampling module, a relay module and a display, and is characterized in that: the direct current silicon chain voltage reduction device further comprises a first voltage regulation controller, a second voltage regulation controller, a change-over switch and a manual regulation knob, wherein the change-over switch is electrically connected with the first voltage regulation controller and the second voltage regulation controller respectively, the output end of the storage battery unit is electrically connected with the input end of the direct current silicon chain voltage reduction module, the output end of the direct current silicon chain voltage reduction module is electrically connected with the output bus end, the input end of the direct current voltage sampling module is electrically connected with the output bus end and the output end of the storage battery unit respectively, the output end of the direct current voltage sampling module is electrically connected with the first voltage regulation controller and the second voltage regulation controller respectively, the first voltage regulation controller and the second voltage regulation controller are electrically connected with the input end of the relay module respectively, and the control end of the relay module is electrically connected with the drive end of the direct current silicon chain voltage reduction module, the manual adjusting knob is electrically connected with the relay module, and the display is electrically connected with the driving ends of the first voltage regulating controller and the second voltage regulating controller respectively. In the scheme, the working state of the device is determined by the change-over switch, the direct-current voltage sampling module determines which path of controller starts to work, and when the device is in a manual state, the manual adjusting knob is adjusted to adjust the conduction state of the corresponding relay group, so that voltage reduction is realized; when the automatic gear is shifted, the corresponding controller controls the relay group to realize silicon chain voltage drop, when the input voltage continuously drops from the maximum value, the automatic voltage regulating device always keeps the voltage on the control bus at a setting value, and when the voltage of the power bus gradually rises from the minimum value to the maximum value, the automatic voltage reducing silicon chain device also can keep the voltage on the control bus at the setting value.
The direct-current silicon chain voltage reduction module comprises seven silicon chains. In the scheme, the voltage reduction silicon chain formed by the isolation diodes has the advantages of good consistency of forward characteristics of PN junctions, stable voltage reduction voltage, small dynamic resistance and the like, and the silicon chain is provided with seven sections corresponding to seven-level voltage regulation and five-level voltage regulation, so that the required voltage reduction requirement can be met.
The relay module comprises two relay groups, and the relay groups are respectively electrically connected with the control ends of the first voltage regulation controller and the second voltage regulation controller.
The two relay sets comprise a five-stage relay set and a seven-stage relay set, and input ends of the five-stage relay set and the seven-stage relay set are respectively electrically connected with control ends of the first voltage regulation controller and the second voltage regulation controller.
The first voltage regulation controller is a 110VDC voltage regulation controller, the second voltage regulation controller is a 220VDC voltage regulation controller, the 110VDC voltage regulation controller has a five-level silicon chain regulation function, and the 220VDC voltage regulation controller has a seven-level silicon chain regulation function. In the scheme, the power supply system can be combined randomly according to the requirements of customers, the reliability and the superiority of the whole product are ensured, the design of the power supply system is optimized to the maximum extent, and perfect, reliable and reasonable application is achieved.
The 110VDC voltage regulation controller corresponds to five-level silicon chains which are respectively a first-level silicon chain 1-3, a second-level silicon chain 1-4, a third-level silicon chain 1-5, a fourth-level silicon chain 1-6 and a fifth-level silicon chain 1-7.
The 220VDC voltage regulation controller is corresponding to the seven-level silicon chain and is respectively a first-level silicon chain 1-1, a second-level silicon chain 1-2, a third-level silicon chain 1-3, a fourth-level silicon chain 1-4, a fifth-level silicon chain 1-5, a sixth-level silicon chain 1-6 and a seventh-level silicon chain 1-7.
The direct-current voltage sampling module comprises a sampling relay, and the sampling relay judges whether to act according to the comparison between the measured closing bus value and a set value, so that the adoption of five-level voltage reduction or seven-level voltage reduction is determined. In the scheme, the access voltage is judged through the direct-current voltage sampling relay judgment circuit, the DC110V controller or the DC220V controller is automatically selected, and the method is applicable to a power bus voltage DC110V system or a DC220V system.
The manual adjusting knob comprises a five-stage manual adjusting knob S1 and a seven-stage manual adjusting knob S2, the five-stage manual adjusting knob S1 is electrically connected with a five-stage relay set, and the normally open end of the five-stage relay set is electrically connected with one end of the five-stage silicon chain respectively; the seven-stage manual adjusting knob S2 is electrically connected with a seven-stage relay set, and the normally open end of the seven-stage relay set is electrically connected with one end of the seven-stage silicon chain respectively.
The invention has the beneficial effects that: 1. the device integrates two control systems, and has the advantages of simple structure, few accessories and light weight; 2. the voltage sampling module is adopted to judge whether the power supply system is connected or not, and the control system is automatically switched, so that the operation is simple, and the reliability of the device is high; 3. reducing labor costs and equipment manufacturing costs and thus reducing the relative cost of the device.
Drawings
Fig. 1 is a schematic structural diagram of an automatic voltage reduction silicon chain device for an emergency maintenance power supply.
Fig. 2 is a schematic diagram of an automatic voltage reduction silicon chain device of an emergency maintenance power supply.
Fig. 3 is a contact point diagram of a manual adjusting knob switch of the automatic voltage reduction silicon chain device for the emergency maintenance power supply.
The notation in the figure is: the device comprises a storage battery unit 1, an output bus terminal 2, a direct current silicon chain voltage reduction module 3, a direct current voltage sampling module 4, a relay module 5, a display 6, a first voltage regulation controller 7, a second voltage regulation controller 8, a change-over switch 9 and a manual regulation knob 10.
Detailed Description
For the purpose of better understanding the objects, technical solutions and advantages of the present invention, the following detailed description of the present invention with reference to the accompanying drawings and examples should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and not for limiting the scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the scope of the present invention.
Example (b): as shown in fig. 1, an automatic step-down silicon chain device of emergency maintenance power supply, including battery unit 1, output bus 2, direct current silicon chain step-down module 3, direct current voltage sampling module 4, relay module 5 and display 6, its characterized in that: the direct current silicon chain voltage reduction device is characterized by further comprising a first voltage regulation controller 7, a second voltage regulation controller 8, a change-over switch 9 and a manual regulation knob 10, wherein the change-over switch 9 is electrically connected with the first voltage regulation controller 7 and the second voltage regulation controller 8 respectively, the output end of the storage battery unit 1 is electrically connected with the input end of the direct current silicon chain voltage reduction module 3, the output end of the direct current silicon chain voltage reduction module 3 is electrically connected with the output bus end 2, the input end of the direct current voltage sampling module 4 is electrically connected with the output bus end 2 and the output end of the storage battery unit 1 respectively, the output end of the direct current voltage sampling module 4 is electrically connected with the first voltage regulation controller 7 and the second voltage regulation controller 8 respectively, the first voltage regulation controller 7 and the second voltage regulation controller 8 are electrically connected with the input end of the relay module 5 respectively, the control end of the relay module 5 is electrically connected with the drive end of the direct current silicon chain voltage reduction module 3, the manual adjusting knob 10 is electrically connected with the relay module 5, and the display 6 is electrically connected with the driving ends of the first voltage regulating controller 7 and the second voltage regulating controller 8 respectively. In the scheme, a change-over switch 9 determines the working state of the device, a direct-current voltage sampling module 4 determines which path of controller starts to work, and when the device is in a manual state, a manual adjusting knob 10 is adjusted to adjust the conduction state of a corresponding relay group, so that voltage reduction is realized; when the automatic gear is shifted, the corresponding controller controls the relay group to realize silicon chain voltage drop, when the input voltage continuously drops from the maximum value, the automatic voltage regulating device always keeps the voltage on the control bus at a setting value, and when the voltage of the power bus gradually rises from the minimum value to the maximum value, the automatic voltage reducing silicon chain device also can keep the voltage on the control bus at the setting value.
As shown in fig. 2, the dc silicon chain voltage-reducing module 3 includes seven silicon chains. In the scheme, the voltage reduction silicon chain formed by the isolation diodes has the advantages of good consistency of forward characteristics of PN junctions, stable voltage reduction voltage, small dynamic resistance and the like, and the silicon chain is provided with seven sections corresponding to seven-level voltage regulation and five-level voltage regulation, so that the required voltage reduction requirement can be met.
The relay module 5 comprises two relay groups, and the relay groups are respectively electrically connected with the control ends of the first voltage regulation controller 7 and the second voltage regulation controller 8.
The two relay sets comprise a five-stage relay set and a seven-stage relay set, and input ends of the five-stage relay set and the seven-stage relay set are respectively electrically connected with control ends of the first voltage regulation controller 7 and the second voltage regulation controller 8.
The first voltage regulation controller 7 is a 110VDC voltage regulation controller, the second voltage regulation controller 8 is a 220VDC voltage regulation controller, the 110VDC voltage regulation controller has a five-level silicon chain regulation function, and the 220VDC voltage regulation controller has a seven-level silicon chain regulation function. In the scheme, the power supply system can be combined randomly according to the requirements of customers, the reliability and the superiority of the whole product are ensured, the design of the power supply system is optimized to the maximum extent, and perfect, reliable and reasonable application is achieved.
The 110VDC voltage regulation controller corresponds to five-level silicon chains which are respectively a first-level silicon chain 1-3, a second-level silicon chain 1-4, a third-level silicon chain 1-5, a fourth-level silicon chain 1-6 and a fifth-level silicon chain 1-7.
The 220VDC voltage regulation controller is corresponding to the seven-level silicon chain and is respectively a first-level silicon chain 1-1, a second-level silicon chain 1-2, a third-level silicon chain 1-3, a fourth-level silicon chain 1-4, a fifth-level silicon chain 1-5, a sixth-level silicon chain 1-6 and a seventh-level silicon chain 1-7.
The direct-current voltage sampling module 4 comprises a sampling relay, and the sampling relay judges whether to act according to the comparison between the measured closing bus value and a set value, so that the adoption of five-level voltage reduction or seven-level voltage reduction is determined. In the scheme, the access voltage is judged through the direct-current voltage sampling relay judgment circuit, the DC110V controller or the DC220V controller is automatically selected, and the method is applicable to a power bus voltage DC110V system or a DC220V system.
The manual adjusting knob 10 comprises a five-stage manual adjusting knob 10S1 and a seven-stage manual adjusting knob 10S2, the five-stage manual adjusting knob 10S1 is electrically connected with a five-stage relay set, and the normally open end of the five-stage relay set is electrically connected with one end of the five-stage silicon chain respectively; the seven-stage manual adjusting knob 10S2 is electrically connected with a seven-stage relay set, and the normally open end of the seven-stage relay set is electrically connected with one end of the seven-stage silicon chain respectively.
The working principle of the device is as follows.
When the device works in an automatic state, the change-over switch 9 is arranged at an 'automatic' position, the automatic voltage reduction silicon link device of the emergency maintenance power supply works in an 'automatic' state, the direct current voltage sampling relay (ZK) detects the voltage of a closing bus (HM) and compares the voltage with a set value DC187V, when the voltage of the bus is higher than (lower than) the upper limit (lower limit) of the set value, the direct current voltage sampling relay (ZK) acts, if the closing bus is connected with a DC110V system, the relay does not act, the DC110V voltage level voltage regulation control part works, if the closing bus is connected with a DC220V system, a normally open contact of the relay is closed, and the DC220V voltage level voltage regulation control part works; an automatic circuit in the DC110V controller or the DC220V controller can accurately detect the silicon chain output voltage (namely the voltage of the control bus 4) and compare the silicon chain output voltage with a set value, when the voltage of the control bus 4 is higher (lower) than the upper limit (lower limit) of the set value, the controller sends out a driving signal to drive a high-power relay (K1-K5 or K6-K13), and the voltage reduction value of the silicon chain is changed by performing the breaking or closing of the relay, so that the voltage value of the control bus 4 is ensured to be within the range of a standard value.
When the device works in a manual state, the change-over switch 9 is arranged at a manual position, the high-power relays (K1-K5 or K6-K13) are controlled to be switched off or switched on through the external manual direction change-over switch 9, the voltage reduction silicon chains are put into groups or are short-circuited, and therefore the output voltage of the silicon chains (the mother voltage KM is controlled) is changed.
As shown in fig. 3, a manual adjusting knob 10 switch contact diagram of the device is shown, the adjusting knob triggers a knob switch to make the voltage value of the power bus unchanged, the voltage of the control bus 4 changes once by one gear of manual voltage adjustment each time until the voltage of the control bus 4 is adjusted to be equal to the voltage of the power bus, and reverse voltage adjustment can also be performed, a change-over switch 9 is installed on a voltage reduction silicon chain installation plate, and can also be installed on a direct current system instrument door to realize "automatic" and "manual" switching, a DC110V system uses a 5-gear change-over switch 9S1, and the voltage of 5 × 5=25V can be adjusted; the DC220V system uses a 7-step transfer switch 9S2 that can adjust the voltage of 7 x 5= 35V.
The above-mentioned embodiments are preferred embodiments of the automatic voltage reduction silicon chain apparatus for emergency service power supply of the present invention, and the scope of the present invention is not limited thereto, and the scope of the present invention includes and is not limited to the embodiments, and all equivalent changes in shape and structure according to the present invention are within the protection scope of the present invention.
Claims (7)
1. The utility model provides an automatic silicon chain device that steps down of emergency maintenance power, includes battery unit (1), output bus end (2), direct current silicon chain step-down module (3), direct current voltage sampling module (4), relay module (5) and display (6), its characterized in that: still including first pressure regulating controller (7), second pressure regulating controller (8), change over switch (9) and manual adjust knob (10), change over switch (9) respectively with first pressure regulating controller (7) and second pressure regulating controller (8) electric connection, the output of battery unit (1) with the input electricity of direct current silicon chain step-down module (3) is connected, the output of direct current silicon chain step-down module (3) with output bus-bar terminal (2) electricity is connected, the input of direct current voltage sampling module (4) respectively with output bus-bar terminal (2) with the output electricity of battery unit (1) is connected, the output of direct current voltage sampling module (4) respectively with first pressure regulating controller (7) and second pressure regulating controller (8) electricity are connected, first pressure regulating controller (7) and second pressure regulating controller (8) respectively with the input electricity of relay module (5) is connected The control end of the relay module (5) is electrically connected with the drive end of the direct current silicon chain voltage reduction module (3), the manual adjusting knob (10) is electrically connected with the relay module (5), and the display (6) is respectively and electrically connected with the drive ends of the first voltage regulation controller (7) and the second voltage regulation controller (8); the relay module (5) comprises two relay groups, and the two relay groups are respectively and electrically connected with the control ends of the first voltage regulation controller (7) and the second voltage regulation controller (8); one relay group includes five relay groups, and another relay group includes seven relay groups, five relay groups and seven relay groups's input respectively with the control end electricity of first pressure regulating controller (7) and second pressure regulating controller (8) is connected.
2. The automatic voltage reduction silicon chain device for the emergency maintenance power supply according to claim 1, wherein: the direct-current silicon chain voltage reduction module (3) comprises seven silicon chains.
3. The automatic voltage reduction silicon chain device for the emergency maintenance power supply according to claim 1, wherein: the first voltage regulation controller (7) is a 110VDC voltage regulation controller, the second voltage regulation controller (8) is a 220VDC voltage regulation controller, the 110VDC voltage regulation controller has a five-level silicon chain regulation function, and the 220VDC voltage regulation controller has a seven-level silicon chain regulation function.
4. The automatic voltage reduction silicon chain device for the emergency maintenance power supply according to claim 3, wherein: the 110VDC voltage regulation controller corresponds to five-level silicon chains which are respectively a first-level silicon chain 1-3, a second-level silicon chain 1-4, a third-level silicon chain 1-5, a fourth-level silicon chain 1-6 and a fifth-level silicon chain 1-7.
5. The automatic voltage reduction silicon chain device for the emergency maintenance power supply according to claim 3, wherein: the 220VDC voltage regulation controller is corresponding to the seven-level silicon chain and is respectively a first-level silicon chain 1-1, a second-level silicon chain 1-2, a third-level silicon chain 1-3, a fourth-level silicon chain 1-4, a fifth-level silicon chain 1-5, a sixth-level silicon chain 1-6 and a seventh-level silicon chain 1-7.
6. The automatic voltage reduction silicon chain device for the emergency maintenance power supply according to claim 1, wherein: the direct-current voltage sampling module (4) comprises a sampling relay, and the sampling relay judges whether to act according to the comparison between the measured closing bus value and a set value, so that the adoption of five-level voltage reduction or seven-level voltage reduction is determined.
7. The automatic voltage reduction silicon chain device for the emergency maintenance power supply according to claim 3, wherein: the manual adjusting knob (10) comprises a five-stage manual adjusting knob S1 and a seven-stage manual adjusting knob S2, the five-stage manual adjusting knob S1 is electrically connected with a five-stage relay set, and the normally open end of the five-stage relay set is electrically connected with one end of the five-stage silicon chain respectively; seven manual adjust knob S2 be connected with seven relay groups electricity, seven relay groups' S normal open end respectively with seven one end electricity of silicon chain is connected.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335995Y (en) * | 2009-01-20 | 2009-10-28 | 河南新乡蓝森科技有限责任公司 | Intelligent silicon chain voltage regulating controller |
| CN202616856U (en) * | 2012-09-28 | 2012-12-19 | 厦门兴厦控恒昌自动化有限公司 | Wall-mounted power system |
| CN203645331U (en) * | 2013-12-16 | 2014-06-11 | 四川帝威电气设备有限公司 | Intelligent voltage regulating system |
| CN204089597U (en) * | 2014-11-10 | 2015-01-07 | 合肥亿莱克电气有限责任公司 | A kind of microcomputer controlled voltage dropping silicon chain circuit |
| CN205792248U (en) * | 2016-07-12 | 2016-12-07 | 广西科技大学鹿山学院 | DC power supply panel voltage dropping silicon chain automatic pressure regulating device |
| CN207134990U (en) * | 2017-07-18 | 2018-03-23 | 国网浙江省电力公司衢州供电公司 | Adjustable type voltage dropping silicon chain |
| CN206975074U (en) * | 2017-07-31 | 2018-02-06 | 烟台海珐电气科技有限公司 | A kind of voltage dropping silicon chain of integrated current divider collection control mother current |
| CN208156541U (en) * | 2018-05-10 | 2018-11-27 | 河北银华电气有限公司 | Hand/automatic silicon chain regulator |
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