CN101741098A - Back pressure type steam turbine generator unit access station service electrical system - Google Patents
Back pressure type steam turbine generator unit access station service electrical system Download PDFInfo
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- CN101741098A CN101741098A CN200910248596A CN200910248596A CN101741098A CN 101741098 A CN101741098 A CN 101741098A CN 200910248596 A CN200910248596 A CN 200910248596A CN 200910248596 A CN200910248596 A CN 200910248596A CN 101741098 A CN101741098 A CN 101741098A
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- back pressure
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Abstract
The invention provides a back pressure type steam turbine generator unit access station service electrical system, aiming at solving the problem that a power generation enterprise is provided with a back pressure type steam turbine generator unit again and accesses an electric machine unit of the back pressure type steam turbine generator unit to the station service electrical system. The back pressure type steam turbine generator unit access station service electrical system comprises a station high-to-low voltage side, a start up/standby transformer high-voltage side joint power network and the back pressure type steam turbine generator unit, wherein the station high-to-low voltage side is provided with two station service working sections and a dead section; and generators of the back pressure type steam turbine generator unit are connected with the station service working sections of the station high-to-low voltage side in a fork connection way. The invention drives an auxiliary steam turbine generator unit by utilizing the pressure difference of steam extraction and heating steam, thereby sufficiently utilizing the heat of the steam extraction of a steam condenser unit; and in addition, the invention merges generated power into the traditional station service electrical system, thereby being beneficial to the improvement of a novel cogeneration system of the steam condenser unit.
Description
Technical field
The present invention relates to a kind of steam turbine generator unit access station service electrical system.
Background technology
The main generator of electricity power enterprise generating back also has one tunnel station-service high-tension transformer through this enterprise (to call factory's hypermutation in the following text) except that sending into the electrical network by main transformer, gives the power supply of this enterprise, Here it is steam turbine generator unit access station service electrical system.This system specifically is that factory's hypermutation low-pressure side is provided with two sections station-service active sections (1A and 1B) and dead section, and the high-pressure side that starts spare transformer (to call Qi Beibian in the following text) gets access to grid.
Summary of the invention
The technical problem to be solved in the present invention is: electricity power enterprise establishes the back pressure type steam turbine generating set again, and the back pressure type steam turbine generating set is inserted above-mentioned station service electrical system.The energy drives that the utilization of back pressure type steam turbine generating set once was consumed.The back pressure type steam turbine generating set is mainly used in station service, and dump energy inserts electrical network.
The object of the present invention is achieved like this: station service electrical system comprises that factory's hypermutation low-pressure side is provided with two sections station-service active sections (1A and 1B) and dead section, opening the high-pressure side that is equipped with change gets access to grid, it is characterized in that: it also has the back pressure type steam turbine generating set, and the generator output end in this unit is connected to the active section 1A and the 1B (to call the fork-join mode in the following text) of factory's hypermutation low-pressure side respectively.It provides service power for the our factory, dump energy by dead section, open be equipped with to become and send into electrical network.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing.
Fig. 1 is the co-generation unit schematic diagram.
Fig. 2 is that co-generation unit inserts electrical network and station service electrical system figure.
Embodiment
Referring to Fig. 1, the cogeneration of heat and power of thermoelectric enterprise comprises two systems, and one is electricity generation system, and electricity generation system comprises high pressure cylinder 20, intermediate pressure cylinder 21, low pressure (LP) cylinder 22 and main generator 23; Another is a heating system, in, low pressure (LP) cylinder communicating pipe 1 place draw gas, through adjuster valve 2, safety valve 3, check-valves 4 and rapid cut-off valve 5, back pressure turbine 7 is arranged between rapid cut-off valve and the heat exchanger 9, back pressure turbine replaces the temperature-decreased pressure reducer in the original system, utilize the energy of bleeding once be consumed to drive back pressure turbine and generator 8 successively, bleed that its steam discharge leads to heat exchanger 9 after the back pressure turbine decompression, to the heat supply network heat supply.The throttle flow of admission adjuster valve 6 control back pressure turbines 7.
Referring to Fig. 2, the main generator 23 generating backs among Fig. 1 also have one tunnel factory's hypermutation 26 through this enterprise except that sending into the electrical network 25 by main transformer 24, and promptly turbo generator set 23 access station service electrical systems are given the power supply of this enterprise.This system comprises that factory's hypermutation low-pressure side is provided with two sections station-service active sections (1A and 1B) 27 and dead section 28, opens to become 29 high-pressure side fully and get access to grid 25; The generator 8 of back pressure steam turbine drive among Fig. 1 adopts the fork-join mode to be connected to the active section (1A, 1B) 27 of factory's hypermutation 26 low-pressure sides.According to the relaying protection configuration mode, can one-sided input or bilateral put into operation simultaneously.Institute's energy output is all supplied with active section load, and electric weight more than needed can be by dead section 28, open and become 29 fully and send into electrical network.Unit normally starts, separates routine process, and the station-service load becomes burden by opening to be equipped with.The normal input of back pressure type steam turbine generating set and withdrawing from all can not impact the operation of former station service electrical system.
Compared with prior art, the invention has the beneficial effects as follows: utilize the pressure differential of drawing gas with heating steam to drive the back pressure type steam turbine generating set, the energy that the condensing unit is drawn gas is fully utilized, and has further improved the utilization ratio of the energy; And incorporate electricity into existing station service electrical system, and simplify grid-connected system, reduce investment outlay, be beneficial to the transformation that (being that heat supply is generated electricity again) system is produced in condensing unit Novel hot Electricity Federation.
Claims (2)
1. back pressure type steam turbine generator unit access station service electrical system, it comprises that factory's hypermutation low-pressure side is provided with two sections station-service active sections and dead section, opening the high-pressure side that is equipped with change gets access to grid, it is characterized in that: it also has the back pressure type steam turbine generating set, and the generator in this unit adopts the fork-join mode to be connected to the active section of factory's hypermutation low-pressure side.
2. according to the described back pressure type steam turbine generator unit access station service electrical system of claim 1, it is characterized in that: back pressure turbine is arranged between the rapid cut-off valve and heat exchanger in the heating system of cogeneration of heat and power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248596A CN101741098A (en) | 2009-12-22 | 2009-12-22 | Back pressure type steam turbine generator unit access station service electrical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248596A CN101741098A (en) | 2009-12-22 | 2009-12-22 | Back pressure type steam turbine generator unit access station service electrical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101741098A true CN101741098A (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910248596A Pending CN101741098A (en) | 2009-12-22 | 2009-12-22 | Back pressure type steam turbine generator unit access station service electrical system |
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| CN (1) | CN101741098A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570504A (en) * | 2012-01-10 | 2012-07-11 | 冯伟忠 | Frequency-conversion main power supply system for thermal power plant |
| CN107420138A (en) * | 2017-08-02 | 2017-12-01 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set novel energy-conserving system and method |
| CN107477649A (en) * | 2017-08-02 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set integrates afterheat utilizing system and method |
| CN107476838A (en) * | 2017-08-02 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | The cascaded utilization of energy system and utilization of power method of Thermal Power Station |
| CN108183641A (en) * | 2017-12-31 | 2018-06-19 | 中国能源建设集团华东电力试验研究院有限公司 | 6kV primary voltage balance systems |
-
2009
- 2009-12-22 CN CN200910248596A patent/CN101741098A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570504A (en) * | 2012-01-10 | 2012-07-11 | 冯伟忠 | Frequency-conversion main power supply system for thermal power plant |
| CN102570504B (en) * | 2012-01-10 | 2015-07-15 | 冯伟忠 | Frequency-conversion main power supply system for thermal power plant |
| CN107420138A (en) * | 2017-08-02 | 2017-12-01 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set novel energy-conserving system and method |
| CN107477649A (en) * | 2017-08-02 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | Turbo-generator Set integrates afterheat utilizing system and method |
| CN107476838A (en) * | 2017-08-02 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | The cascaded utilization of energy system and utilization of power method of Thermal Power Station |
| CN108183641A (en) * | 2017-12-31 | 2018-06-19 | 中国能源建设集团华东电力试验研究院有限公司 | 6kV primary voltage balance systems |
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| 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 |
Open date: 20100616 |