CN101895131A - Automatic synchronizing paralleling method of pumped storage unit - Google Patents
Automatic synchronizing paralleling method of pumped storage unit Download PDFInfo
- Publication number
- CN101895131A CN101895131A CN 201010257655 CN201010257655A CN101895131A CN 101895131 A CN101895131 A CN 101895131A CN 201010257655 CN201010257655 CN 201010257655 CN 201010257655 A CN201010257655 A CN 201010257655A CN 101895131 A CN101895131 A CN 101895131A
- Authority
- CN
- China
- Prior art keywords
- storage unit
- pumped storage
- frequency
- voltage
- synchronous
- 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.)
- Pending
Links
Images
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses an automatic synchronizing paralleling method of a pumped storage unit in the technical field of hydroelectric power generation, which comprises the following steps of driving a pumped storage unit by utilizing a high-voltage inverter, presetting the high-voltage inverters to be started and operated, and sending a synchronization operation instruction to a synchronization device by the high-voltage inverter when the rotary speed of the pumped storage unit is accelerated to 99% of rated rotary speed, wherein the synchronization device can conduct the instruction synchronization treatment after receiving the synchronization operation instruction, and sends a paralleling instruction on the premise that the synchronous conditions are established, then the inverter can automatically lock and withdraw operation according to a successful paralleling feedback signal after the paralleling operation, and the inverter and a motor is disconnected through the operations of a circuit breaker. The invention realizes the reliable, quick and automatic synchronizing paralleling operation of the pumped storage unit.
Description
Technical field
What the present invention relates to is the method in a kind of hydraulic power generation technology field, particularly, relates to a kind of automatic synchronizing paralleling method of pumped storage unit.
Background technology
Hydroenergy storage station is a kind of mode of indirect store electrical energy.Be mainly and solved that imbalance between supply and demand produces between electrical network peak, the low ebb.When low power consumption, Power Plant is moved under pump operating condition and is absorbed this part superfluous electric power of meritorious electricity usage more than needed in the electrical network and water is extracted into upper storage reservoir from lower storage reservoir stores, and this part electric energy is converted into potential energy; Unit is emitted generating with the generation mode operation with water when electrical network is in peak times of power consumption then, and flows into lower storage reservoir, and this part potential energy is converted into electric energy.Use the hydroenergy storage station ratio to increase to build coal electricity generating equipment to satisfy the peak electricity consumption and press load at low ebb, to shut down this situation benefit better.In addition, hydroenergy storage station can also be undertaken dynamic functions such as frequency modulation, phase modulation and emergency duty.
Requirement was waited to be incorporated into the power networks when the pumped storage unit was incorporated into the power networks with electrical network, and unit is identical with electrical network both sides voltage, frequency is identical and phase angle is identical, otherwise can produce very big impulse current, make device damage such as the circuit breaker of connecting in wait to be incorporated into the power networks motor and the circuit, main transformer, also can influence network system when serious, make mains breakdown.Therefore, in the unit starting process of waiting to be incorporated into the power networks, need accurately control amplitude, frequency and the phase place of unit side voltage.At present, most of pumped storage units all adopt the frequency converter of controllable silicon composition as start-up system, carry out automatic synchronizing paralleling, and this method response speed is slow, and control precision is low, and the success rate that is incorporated into the power networks is low.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of automatic synchronizing paralleling method of pumped storage unit is provided.The present invention has realized that pumped storage unit automatic synchronizing paralleling success rate height, response speed are fast, the advantage that control precision is high.
The present invention is achieved by the following technical solutions:
The present invention includes following step:
(1) utilize high voltage converter to drive the pumped storage unit, the preset high pressure frequency converter starts operation;
Described preset high pressure frequency converter starts operation, be meant between high voltage converter start-up system and electrical network, be provided with one the same period device, electrical network is surveyed voltage, frequency, phase angle signal and unit side voltage, frequency, phase angle signal sends into synchronous device.
(2) when the rotating speed of pumped storage unit accelerate to rated speed 99% the time, send the operating instruction same period by high voltage converter to synchronous device.
(3) synchronous device instructs handle the same period after receiving the operating instruction same period;
Described instruction is handled the same period, is the excitation unit pulsation regulating command of showing high voltage converter and unit, makes that respectively frequency, phase angle and amplitude and the voltage on line side of unit terminal voltage are synchronous.
(4) judging that synchronous device sends " finishing the instruction of can being incorporated into the power networks the same period " under the prerequisite that synchronous condition is established;
Described synchronous condition is that the voltage of electrical network and pumped storage unit both sides satisfies difference on the frequency less than 0.1Hz, and pressure reduction is less than 5V, and phase difference approaches zero.
(5) be incorporated into the power networks after, to carry out self-locking out of service according to the success feedback signal that is incorporated into the power networks for frequency converter, and disconnect being connected of frequency converter and motor by breaker operator.
The technical scheme that the present invention takes can realize reliable, the fast automatic simultaneous interconnecting of pumped storage unit.Be described further below with reference to the technique effect of accompanying drawing, to understand purpose of the present invention, feature and effect fully design of the present invention, specific implementation method and generation.
Description of drawings
Fig. 1 is one embodiment of the present of invention block diagrams;
Fig. 2 is the technique effect schematic diagram of one embodiment of the present of invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: following examples have provided detailed execution mode and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Embodiment
As shown in Figure 1, the execution mode of present embodiment and process are shown in block diagram:
Present embodiment high voltage converter SFC1 links by circuit breaker S1 and pumped storage unit M1, pumped storage unit M1 links with electrical network by the switch S 2 that is incorporated into the power networks, amplitude, frequency and the phase signal of mutual induction of voltage device PT1 and PT2 difference detection of grid and unit both sides voltage, and these signals are sent into synchronous device, the excitation unit of synchronous device control high voltage converter SFC1, circuit breaker S1, the switch S that is incorporated into the power networks 2 and unit M1.
Present embodiment comprises following step:
(1) utilize high voltage converter to drive the pumped storage unit, form the high voltage converter start-up system, between high voltage converter start-up system and electrical network, be provided with one the same period device; And be equipped with circuit breaker, the switch that is incorporated into the power networks, mutual induction of voltage device; Electrical network is surveyed voltage, frequency, phase angle signal and unit side voltage, frequency, phase angle signal send into synchronous device;
When automatic synchronizing paralleling begins, synchronous device close circuit breaker S1 starts high voltage converter SFC1, drives the pumped storage unit and begins to rotate, mutual induction of voltage device PT1 and PT2 detect in real time to the voltage of electrical network and unit both sides, and detection signal is sent into synchronous device.
(2) when the rotating speed of pumped storage unit M1 accelerate to rated speed 99% the time, send the operating instruction same period by high voltage converter SFC1 to synchronous device;
(3) synchronous device begins to carry out the same period after receiving the operating instruction same period, and sends regulating command constantly for high voltage converter SFC1, the frequency and the phase angle of the output voltage of control high voltage converter SFC1.Simultaneously, synchronous device sends the pulsation regulating command to the excitation unit of unit M1, regulates the amplitude of unit terminal voltage.Make that finally frequency, phase angle and amplitude and the voltage on line side of unit terminal voltage are synchronous;
(4) judging under the prerequisite that synchronous condition is established, the voltage that is electrical network and pumped storage unit M1 both sides satisfies difference on the frequency less than 0.1Hz, and pressure reduction is less than 5V, and phase difference approaches zero, synchronous device sends " finishing the instruction of can being incorporated into the power networks the same period ", controls switch S 2 closures that are incorporated into the power networks;
(5) after unit M1 reliably is incorporated into the power networks, synchronous device sends to high voltage converter SFC1 and is incorporated into the power networks into function signal, and disconnects being connected of high voltage converter SFC1 and motor M 1 by circuit breaker S1 operation.It is out of service that high voltage converter SFC1 carries out self-locking, and automatic synchronizing paralleling finishes.
As shown in Figure 2, for the technique effect of present embodiment is seen power frequency supply voltage waveform and high voltage converter SFC1 output voltage waveforms among the figure, the place that arrow is represented is the power frequency supply voltage waveform, during pumped storage unit M1 automatic synchronizing paralleling, electrical network does not have the position to offset mutually with unit both sides voltage fully as seen from Figure 2.
Claims (4)
1. an automatic synchronizing paralleling method of pumped storage unit is characterized in that, comprises following step:
(1) utilize high voltage converter to drive the pumped storage unit, the preset high pressure frequency converter starts operation;
(2) when the rotating speed of pumped storage unit accelerate to rated speed 99% the time, send the operating instruction same period by high voltage converter to synchronous device;
(3) synchronous device instructs handle the same period after receiving the operating instruction same period;
(4) judging that synchronous device sends the instruction of being incorporated into the power networks under the prerequisite that synchronous condition is established;
(5) be incorporated into the power networks after, to carry out self-locking out of service according to the success feedback signal that is incorporated into the power networks for frequency converter, and disconnect being connected of frequency converter and motor by breaker operator.
2. automatic synchronizing paralleling method of pumped storage unit according to claim 1, it is characterized in that, described preset high pressure frequency converter starts operation, be meant between high voltage converter start-up system and electrical network, be provided with one the same period device, electrical network is surveyed voltage, frequency, phase angle signal and unit side voltage, frequency, phase angle signal sends into synchronous device.
3. automatic synchronizing paralleling method of pumped storage unit according to claim 1, it is characterized in that, described instruction is handled the same period, is the excitation unit pulsation regulating command of showing high voltage converter and unit, makes that respectively frequency, phase angle and amplitude and the voltage on line side of unit terminal voltage are synchronous.
4. automatic synchronizing paralleling method of pumped storage unit according to claim 1 is characterized in that, described synchronous condition is that the voltage of electrical network and pumped storage unit both sides satisfies difference on the frequency less than 0.1Hz, and pressure reduction is less than 5V, and phase difference approaches zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257655 CN101895131A (en) | 2010-08-20 | 2010-08-20 | Automatic synchronizing paralleling method of pumped storage unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257655 CN101895131A (en) | 2010-08-20 | 2010-08-20 | Automatic synchronizing paralleling method of pumped storage unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101895131A true CN101895131A (en) | 2010-11-24 |
Family
ID=43104242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010257655 Pending CN101895131A (en) | 2010-08-20 | 2010-08-20 | Automatic synchronizing paralleling method of pumped storage unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101895131A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078326A (en) * | 2012-12-28 | 2013-05-01 | 中国电力科学研究院 | Optimization method for improving safety and stability of grid frequency |
| CN103887819A (en) * | 2014-03-24 | 2014-06-25 | 深圳市长昊机电有限公司 | Doubly-fed fan grid-connected power generation system and control method |
| CN104881317A (en) * | 2015-06-18 | 2015-09-02 | 山东泰山抽水蓄能电站有限责任公司 | Corresponding-period grid-connection simulation platform and simulation system of pumped power storage unit under different working conditions |
| CN105810059A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Conversion device used for simulating generator parallel |
| EP3082252A1 (en) * | 2015-04-13 | 2016-10-19 | LSIS Co., Ltd. | Inverter system |
| CN108847691A (en) * | 2018-08-31 | 2018-11-20 | 卧龙电气南阳防爆集团股份有限公司 | A kind of emergency service unit combination method and device |
-
2010
- 2010-08-20 CN CN 201010257655 patent/CN101895131A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 《抽水蓄能电站工程建设文集》 20081231 何铮等 IGBT变频器在启动抽水蓄能机组上的应用 第1页至第6页 1-4 , 2 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078326A (en) * | 2012-12-28 | 2013-05-01 | 中国电力科学研究院 | Optimization method for improving safety and stability of grid frequency |
| CN103887819A (en) * | 2014-03-24 | 2014-06-25 | 深圳市长昊机电有限公司 | Doubly-fed fan grid-connected power generation system and control method |
| CN103887819B (en) * | 2014-03-24 | 2017-01-25 | 深圳市长昊机电有限公司 | Doubly-fed fan grid-connected power generation system and control method |
| CN105810059A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Conversion device used for simulating generator parallel |
| EP3082252A1 (en) * | 2015-04-13 | 2016-10-19 | LSIS Co., Ltd. | Inverter system |
| US9871486B2 (en) | 2015-04-13 | 2018-01-16 | Lsis Co., Ltd | Inverter system |
| CN104881317A (en) * | 2015-06-18 | 2015-09-02 | 山东泰山抽水蓄能电站有限责任公司 | Corresponding-period grid-connection simulation platform and simulation system of pumped power storage unit under different working conditions |
| CN104881317B (en) * | 2015-06-18 | 2018-09-07 | 山东泰山抽水蓄能电站有限责任公司 | Simultaneous interconnecting emulation platform and analogue system under pump-storage generator difference operating mode |
| CN108847691A (en) * | 2018-08-31 | 2018-11-20 | 卧龙电气南阳防爆集团股份有限公司 | A kind of emergency service unit combination method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101895131A (en) | Automatic synchronizing paralleling method of pumped storage unit | |
| CN101057390B (en) | System and method for generating and utilizing electric power | |
| CN109861286B (en) | Black start process control method for offshore wind generating set | |
| CN102570934B (en) | Start control method for working condition excitation system of static frequency converter of pumped-storage aggregate set | |
| CN101924513B (en) | System for adjusting backward generating operation power of water pump in pump station | |
| CN103112702B (en) | Constant voltage frequency ratio control system and constant voltage frequency ratio control method of multi-motor driving belt conveyor | |
| CN103280838A (en) | Wind power generation high-voltage direct current grid-connected system based on open coil structure and control method thereof | |
| CN103503269A (en) | System for distributing electric power to an electrical grid | |
| CN101924508A (en) | Variable-frequency speed regulating system for starting high-power pumped storage unit | |
| US20150048623A1 (en) | Method for operating an electric unit for a pumped-storage power plant | |
| CN102185550B (en) | Double-unit wind power generation grid-connected system and control method thereof | |
| CN105689160A (en) | Stopping method and device for magnetic suspension centrifugal machine | |
| CN103630838B (en) | A kind of double-fed generator is to dragging temperature-raising experimental method | |
| CN101841169A (en) | Energy management system for wind power generation | |
| KR20120100228A (en) | Double-sided converter for initial operating in wind turbine, apparatus and method for initial operating using the same | |
| CN102148517A (en) | Miniature wind-solar hybrid power generation controller and control method | |
| CN102291069B (en) | Hybrid excitation synchronous starting system and method of synchronous motor | |
| CN201690400U (en) | Frequency-conversion soft-start hybrid power cabinet | |
| CN113497458B (en) | TRT grid-connected power generation system based on turbine variable rotation speed | |
| CN102185557A (en) | Speed regulation control system of single-phase induction motor | |
| CN201312282Y (en) | Speed changing system of static frequency converter | |
| CN204156533U (en) | A kind of double-fed type pumped storage with self-starting function | |
| CN110896222B (en) | Reactive compensation method of asynchronous generator | |
| CN202218187U (en) | Hybrid excitation synchronous starting system of synchronous motor and wind driven generator | |
| CN103812211B (en) | A kind of seamless fast cutting system of intelligent grid and method based on becoming ginseng with net |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101124 |