CN201774301U - High frequency switch DC supply system for substation - Google Patents
High frequency switch DC supply system for substation Download PDFInfo
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- CN201774301U CN201774301U CN2010202389331U CN201020238933U CN201774301U CN 201774301 U CN201774301 U CN 201774301U CN 2010202389331 U CN2010202389331 U CN 2010202389331U CN 201020238933 U CN201020238933 U CN 201020238933U CN 201774301 U CN201774301 U CN 201774301U
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Abstract
The utility model relates to a high frequency switch DC supply system for a substation, which comprises an AC electric distribution unit, a high frequency rectifying module, a depressurization unit, a storage battery and a system monitoring unit. The DC filling the bill through rectifying a triphase AC power supply through a high frequency switch rectifying unit is connected with the storage battery in parallel and then is supplied for a switching-on bus, so as to provide operation power supply for the on/off of a circuit breaker; and the voltage of the switching-on bus is regulated by a depressurization module to output to a control bus, so as to provide power supply for relay protection and loading control of automatic devices and the like.
Description
Technical field
The utility model relates to a kind of transformer station high-frequency switch DC power system.
Background technology
The employed direct current operative power source of electric power system adopts the Thyristor Controlled DC power system mostly at present, but phase control rectifier is all unsatisfactory at aspects such as ripple, efficient, electromagnetic radiation, noise, volumes, the supervisory control system imperfection; In addition, because the ripple coefficient of phase control rectifier power supply is big, float charge voltage easily fluctuates, and storage battery pulsation charge and discharge phenomena can occur, and is bigger to the storage battery infringement.And novel high-frequency switch DC power system relies on its high accuracy, superior functions such as low ripple, high efficiency and High Power Factor, is progressively replacing traditional Thyristor Controlled rectifying device.
In the disclosed relevant patent of transforming plant DC power supply, transforming plant DC power supply the complete sets of equipment as bulletins such as Chinese patent CN2196341Y, CN2147676Y and CN2157618Y, the general Thyristor Controlled rectifier that adopts, rectifier is made up of Industrial Frequency Transformer, thyristor rectifier bridge, filter inductance and electric capacity, Industrial Frequency Transformer is realized the isolation of rectifier and electrical network, the angle of flow by the control thyristor changes output voltage, the requirement when satisfying storage battery difference operating mode.Although compare with the transforming plant DC power supply of magnetic saturation voltage regulation way, its electricity function index is greatly improved, and can satisfy the charging requirement of open type lead acid accumulator, but still has following tangible weak point:
(1) under the power frequency situation, carry out voltage transformation owing to phase controlled rectifier is still, thereby volume is big, heavy.
(2) be subjected to the restriction of phase control rectifier circuit theory, DC power supply has that the voltage stabilization and current stabilization precision is low, ripple voltage coefficient height, shortcoming that noise is big, when being used for the valve-control sealed lead acid battery group, causes the life of storage battery to reduce easily.
(3) two groups of rectifiers adopt one main one to be equipped with mode, and capacity configuration lacks flexibility, increases the screen body quantity of DC power system, thereby increases power supply cost and area occupied.
(4) storage battery lacks necessary safeguard measure as the important component part of transforming plant DC power supply in power supply.
Summary of the invention
The utility model promptly is a kind of transformer station high-frequency switch DC power system that proposes at above-mentioned problems of the prior art.
The utility model adopts following technical proposals to realize:
A kind of transformer station high-frequency switch DC power system is characterized in that: be made up of Alternating Current Unit, high-frequency rectification module, pressure unit, batteries and system monitoring unit; Alternating Current Unit is that AC power is handled, protects, monitored, and with the rectification unit interface; The high-frequency rectification module is to change alternating current into direct current; Pressure unit is responsible for powering to dc load; Batteries is to power to system under interchange dead electricity or failure condition; The system monitoring unit is used for Alternating Current Unit, rectification unit, DC feedback unit and batteries are carried out intelligent management, and realizes that data monitoring, definite value are set, off-limit alarm.
Transformer station according to claim 1 high-frequency switch DC power system; it is characterized in that: three-phase alternating-current supply is satisfactory direct current through the switch rectifier unit rectification; this direct current with offer closing bus bar after batteries is in parallel; for a circuit breaker deciliter grade provides operating power; export to the control bus again after the adjustment of closing bus bar voltage through the step-down module, for controls such as relaying protection and automatics load provides power supply.
Transformer station according to claim 1 high-frequency switch DC power system; it is characterized in that: described high-frequency rectification module is to be composed in parallel by one group of high frequency switching rectifier module; comprise main circuit; adjust control circuit; auxiliary circuit; main circuit is by AC rectification filtering; power factor correction; the DC/DC conversion; filtering high-frequency rectifier is formed; control circuit adopts the PWM pulse-width modulation circuit; it comprises the output sampling; signal amplifies; regulating and controlling; benchmark relatively waits the unit, and auxiliary circuit comprises manual setting; stabilized voltage power supply; guard signal; accident alarming and communication interface.
Description of drawings
Accompanying drawing 1 constitutes block diagram for the utility model system;
Accompanying drawing 2 constitutes block diagram for high frequency switching rectifier module;
Embodiment
The utility model is further introduced below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
This system is made up of Alternating Current Unit, high-frequency rectification module, pressure unit, batteries and system monitoring unit; Alternating Current Unit is that AC power is handled, protects, monitored, and with the rectification unit interface; The high-frequency rectification module is to change alternating current into direct current; Pressure unit is responsible for powering to dc load; Batteries is to power to system under interchange dead electricity or failure condition; The system monitoring unit is used for Alternating Current Unit, rectification unit, DC feedback unit and batteries are carried out intelligent management, and realizes that data monitoring, definite value are set, off-limit alarm.
Three-phase alternating-current supply is satisfactory direct current through the switch rectifier unit rectification; this direct current with offer closing bus bar after batteries is in parallel; for a circuit breaker deciliter grade provides operating power; export to the control bus again after the adjustment of closing bus bar voltage through the step-down module, for controls such as relaying protection and automatics load provides power supply.
The high-frequency rectification module is to be composed in parallel by one group of high frequency switching rectifier module, comprise main circuit, adjust control circuit, auxiliary circuit, main circuit is made up of AC rectification filtering, power factor correction, DC/DC conversion, filtering high-frequency rectifier, control circuit adopts the PWM pulse-width modulation circuit, and it comprises defeated
Go out sampling, signal amplification, regulating and controlling, benchmark and relatively wait the unit, auxiliary circuit comprises manual setting, stabilized voltage power supply, guard signal, accident alarming and communication interface.
Claims (3)
1. transformer station's high-frequency switch DC power system is characterized in that: be made up of Alternating Current Unit, high-frequency rectification module, pressure unit, batteries and system monitoring unit; Alternating Current Unit is that AC power is handled, protects, monitored, and with the rectification unit interface; The high-frequency rectification module is to change alternating current into direct current; Pressure unit is responsible for powering to dc load; Batteries is to power to system under interchange dead electricity or failure condition; The system monitoring unit is used for Alternating Current Unit, rectification unit, DC feedback unit and batteries are carried out intelligent management, and realizes that data monitoring, definite value are set, off-limit alarm.
2. transformer station according to claim 1 high-frequency switch DC power system; it is characterized in that: three-phase alternating-current supply is satisfactory direct current through the switch rectifier unit rectification; this direct current with offer closing bus bar after batteries is in parallel; for a circuit breaker deciliter grade provides operating power; export to the control bus again after the adjustment of closing bus bar voltage through the step-down module, for controls such as relaying protection and automatics load provides power supply.
3. transformer station according to claim 1 high-frequency switch DC power system; it is characterized in that: described high-frequency rectification module is to be composed in parallel by one group of high frequency switching rectifier module; comprise main circuit; adjust control circuit; auxiliary circuit; main circuit is by AC rectification filtering; power factor correction; the DC/DC conversion; filtering high-frequency rectifier is formed; control circuit adopts the PWM pulse-width modulation circuit; it comprises the output sampling; signal amplifies; regulating and controlling; benchmark relatively waits the unit, and auxiliary circuit comprises manual setting; stabilized voltage power supply; guard signal; accident alarming and communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202389331U CN201774301U (en) | 2010-06-24 | 2010-06-24 | High frequency switch DC supply system for substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202389331U CN201774301U (en) | 2010-06-24 | 2010-06-24 | High frequency switch DC supply system for substation |
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| Publication Number | Publication Date |
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| CN201774301U true CN201774301U (en) | 2011-03-23 |
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| CN2010202389331U Expired - Fee Related CN201774301U (en) | 2010-06-24 | 2010-06-24 | High frequency switch DC supply system for substation |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856968A (en) * | 2011-12-31 | 2013-01-02 | 广州市捷信通科技发展有限公司 | Digital management and high-capacity battery application based direct-current power supply system device and control method thereof |
| CN103094979A (en) * | 2013-02-28 | 2013-05-08 | 绥化电业局 | Standby power for electric system direct current grounding line checking |
| CN103116108A (en) * | 2013-02-20 | 2013-05-22 | 山东电力集团公司烟台供电公司 | Intelligent detector for direct-current power supply system of transformer substation |
| CN103296738A (en) * | 2013-06-25 | 2013-09-11 | 厦门众芯电气设备有限公司 | Dual standby saving type direct current power supply system |
| WO2013131392A1 (en) * | 2012-03-07 | 2013-09-12 | 甘肃省电力公司电力科学研究院 | Dc power supply dynamic simulation system and dc power supply test system |
| CN105762878A (en) * | 2016-04-12 | 2016-07-13 | 安徽明瑞智能科技股份有限公司 | High frequency switch direct current power source system |
| CN106301012A (en) * | 2015-12-25 | 2017-01-04 | 厦门宏合自动化设备有限公司 | A kind of electric operation power reduces power-supply system and the method for input stand-by power consumption |
| CN106549501A (en) * | 2016-12-09 | 2017-03-29 | 国网安徽省电力公司池州供电公司 | For the intelligent management monitoring unit and transformer substation communication power-supply system of communication power supply |
| CN107947949A (en) * | 2017-12-28 | 2018-04-20 | 南京熊猫电子股份有限公司 | A kind of the time frequency system and control method of more extension set switching on and shutting down of host computer control |
| CN108023491A (en) * | 2018-02-01 | 2018-05-11 | 成都爱特联科技有限公司 | A kind of electronic switch power based on high-frequency switching technology design |
| CN113525112A (en) * | 2021-08-31 | 2021-10-22 | 南京邮电大学盐城大数据研究中心 | Bury formula charging system suitable for new forms of energy car |
-
2010
- 2010-06-24 CN CN2010202389331U patent/CN201774301U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856968A (en) * | 2011-12-31 | 2013-01-02 | 广州市捷信通科技发展有限公司 | Digital management and high-capacity battery application based direct-current power supply system device and control method thereof |
| WO2013131392A1 (en) * | 2012-03-07 | 2013-09-12 | 甘肃省电力公司电力科学研究院 | Dc power supply dynamic simulation system and dc power supply test system |
| CN103116108A (en) * | 2013-02-20 | 2013-05-22 | 山东电力集团公司烟台供电公司 | Intelligent detector for direct-current power supply system of transformer substation |
| CN103094979A (en) * | 2013-02-28 | 2013-05-08 | 绥化电业局 | Standby power for electric system direct current grounding line checking |
| CN103296738A (en) * | 2013-06-25 | 2013-09-11 | 厦门众芯电气设备有限公司 | Dual standby saving type direct current power supply system |
| CN106301012A (en) * | 2015-12-25 | 2017-01-04 | 厦门宏合自动化设备有限公司 | A kind of electric operation power reduces power-supply system and the method for input stand-by power consumption |
| CN105762878A (en) * | 2016-04-12 | 2016-07-13 | 安徽明瑞智能科技股份有限公司 | High frequency switch direct current power source system |
| CN106549501A (en) * | 2016-12-09 | 2017-03-29 | 国网安徽省电力公司池州供电公司 | For the intelligent management monitoring unit and transformer substation communication power-supply system of communication power supply |
| CN106549501B (en) * | 2016-12-09 | 2023-05-16 | 国网安徽省电力公司池州供电公司 | Intelligent management monitoring unit for communication power supply and transformer substation communication power supply system |
| CN107947949A (en) * | 2017-12-28 | 2018-04-20 | 南京熊猫电子股份有限公司 | A kind of the time frequency system and control method of more extension set switching on and shutting down of host computer control |
| CN107947949B (en) * | 2017-12-28 | 2024-07-09 | 南京熊猫电子股份有限公司 | Time-frequency system for controlling multiple extension sets to be started and shut down by host computer and control method |
| CN108023491A (en) * | 2018-02-01 | 2018-05-11 | 成都爱特联科技有限公司 | A kind of electronic switch power based on high-frequency switching technology design |
| CN113525112A (en) * | 2021-08-31 | 2021-10-22 | 南京邮电大学盐城大数据研究中心 | Bury formula charging system suitable for new forms of energy car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |