CN204012909U - Be applied to thermal power plant's two-shipper twin diesel group and start band emergency power supply system simultaneously - Google Patents
Be applied to thermal power plant's two-shipper twin diesel group and start band emergency power supply system simultaneously Download PDFInfo
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- CN204012909U CN204012909U CN201420418884.8U CN201420418884U CN204012909U CN 204012909 U CN204012909 U CN 204012909U CN 201420418884 U CN201420418884 U CN 201420418884U CN 204012909 U CN204012909 U CN 204012909U
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Abstract
The utility model discloses one is applied to thermal power plant's two-shipper twin diesel group and starts band emergency power supply system simultaneously, it is provided with the first diesel engine generator and the second diesel engine generator, when any one section of emergency power supply dead electricity in two units, two diesel generating sets of delayed startup, as two diesel engines all start successfully, powered by corresponding unit diesel engine generator, as a diesel generating set only starts successfully, close a floodgate to the power supply of dead electricity security personnel section by network interconnecting circuit.The utility model is not increasing under the prerequisite of investment, and diesel-electric set electric supply reliability at least doubles compared with conventional design; Can be directly out of service in the time of a diesel engine generator repair and maintenance; utilize network interconnecting circuit to ensure that another diesel generating set is as in-put of spare power supply; and need not whole generating set shut down the diesel generating set of the corresponding unit of repair and maintenance, therefore greatly improved flexibility and the fail safe of unit operation.
Description
Technical field:
The utility model belongs to thermal power plant power supply control technical field, is specifically related to one and is applied to thermal power plant's two-shipper twin diesel group and starts band emergency power supply system simultaneously.
Background technology:
Emergency power supply (Emergency power supply) refers to the safe operation in order to ensure machine stove, later can very fast restarting, or in order to prevent from jeopardizing the reasons such as personal safety, need in the time having a power failure, proceed the power supply of power supply.
Be 200MW and above unit according to DL/T 5153-2002 " thermal power plant station service designing technique specifies " capacity, AC safety watl power supply should be set.Every 300MW or 600MW unit should arrange a diesel generating set automatically starting fast.Diesel generating set, as a system independently, is disturbed by the factors such as electric power system few, and current quilt is extensively selected as power plant emergency power supply.
Every unit of conventional large-size thermal power plant arranges a diesel engine generator, between two diesel generating sets without any contact, when after security personnel's section power supply dead electricity of a unit, the diesel generating set of the corresponding unit of delayed startup, if diesel engine generator is now because a variety of causes starts unsuccessfully, security personnel's section will thoroughly lose power supply, thus the safe operation of unit be caused to grave danger.
Therefore, be necessary thermal power plant diesel engine unit and emergency power supply system to study, mainly solve following problem: do not improving under the prerequisite of power plant's investment, improving the reliability of diesel-electric set electric supply, to ensure the power supply of important load as far as possible.
Utility model content:
The purpose of this utility model is for the deficiencies in the prior art, provides one to be applied to thermal power plant's two-shipper twin diesel group and has started band emergency power supply system simultaneously, and it improves the reliability of diesel-electric set electric supply in the situation that not increasing power plant's investment.
To achieve these goals, the utility model adopts following technical scheme:
Be applied to thermal power plant's two-shipper twin diesel group and start band emergency power supply system simultaneously, comprise the first diesel engine generator and the second diesel engine generator, wherein,
The output of the first diesel engine generator is connected with the input of first paragraph diesel engine generator bus by the first outlet breaker, an output of first paragraph diesel engine generator bus is connected with the input of security personnel 1A section by first security personnel's section service entrance switch for subsequent use, the output of security personnel 1A section is connected with the input of boiler 1A section by first security personnel's section work service entrance switch, another output of first paragraph diesel engine generator bus is connected with the input of security personnel 1B section by second security personnel's section service entrance switch for subsequent use, security personnel 1B section output is connected with the input of boiler 1B section by second security personnel's section work service entrance switch,
The output of the second diesel engine generator is connected with the input of second segment diesel engine generator bus by the second outlet breaker, an output of second segment diesel engine generator bus is connected with the input of security personnel 2A section by the 3rd security personnel's section service entrance switch for subsequent use, the output of security personnel 2A section is connected with the input of boiler 2A section by the 3rd security personnel's section work service entrance switch, another output of second segment diesel engine generator bus is connected with the input of security personnel 2B section by the 4th security personnel's section service entrance switch for subsequent use, the output of security personnel 2B section is connected with the input of boiler 2B section by the 4th security personnel's section work service entrance switch,
Between first paragraph diesel engine generator bus and second segment diesel engine generator bus, be connected by network interconnecting circuit.
The utility model further improves and is: the input of boiler 1A section is provided with the first boiler section work service entrance switch, the input of boiler 1B section is provided with the second boiler section work service entrance switch, input the 3rd boiler section work service entrance switch of boiler 2A section, input the 4th boiler section work service entrance switch of boiler 2B section.
With respect to prior art, the utlity model has following beneficial effect:
The utility model is not increasing under the prerequisite of investment, and diesel-electric set electric supply reliability at least doubles compared with conventional design; Can be directly out of service in the time of a diesel engine generator repair and maintenance; utilize network interconnecting circuit to ensure that another diesel generating set is as in-put of spare power supply; and need not whole generating set shut down the diesel generating set of the corresponding unit of repair and maintenance, therefore greatly improved flexibility and the fail safe of unit operation.
Brief description of the drawings:
Fig. 1 is the utility model electrical principle wiring schematic diagram.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Refer to shown in Fig. 1, the utility model one is applied to thermal power plant's two-shipper twin diesel group and starts band emergency power supply system simultaneously, comprises the first diesel engine generator 1 and the second diesel engine generator 2, wherein,
The output of the first diesel engine generator 1 is connected with the input of first paragraph diesel engine generator bus by the first outlet breaker 10ZKK, an output of first paragraph diesel engine generator bus is connected with the input of security personnel 1A section by first security personnel's section service entrance switch 1ZKK for subsequent use, the output of security personnel 1A section is connected with the input of boiler 1A section by first security personnel's section work service entrance switch 3ZKK, another output of first paragraph diesel engine generator bus is connected with the input of security personnel 1B section by second security personnel's section service entrance switch 2ZKK for subsequent use, security personnel 1B section output is connected with the input of boiler 1B section by second security personnel's section work service entrance switch 4ZKK,
The output of the second diesel engine generator 2 is connected with the input of second segment diesel engine generator bus by the second outlet breaker 11ZKK, an output of second segment diesel engine generator bus is connected with the input of security personnel 2A section by the 3rd security personnel's section service entrance switch 6ZKK for subsequent use, the output of security personnel 2A section is connected with the input of boiler 2A section by the 3rd security personnel's section work service entrance switch 8ZKK, another output of second segment diesel engine generator bus is connected with the input of security personnel 2B section by the 4th security personnel's section service entrance switch 7ZKK for subsequent use, the output of security personnel 2B section is connected with the input of boiler 2B section by the 4th security personnel's section work service entrance switch 9ZKK,
Between first paragraph diesel engine generator bus and second segment diesel engine generator bus, be connected by network interconnecting circuit 5ZKK.
Further, the input of boiler 1A section is provided with the first boiler section work service entrance switch 3ZKK ', the input of boiler 1B section is provided with the second boiler section work service entrance switch 4ZKK ', input the 3rd boiler section work service entrance switch 8ZKK ' of boiler 2A section, input the 4th boiler section work service entrance switch 9ZKK ' of boiler 2B section.
For the utility model is further understood, now its operation principle is done to an explanation.
Under the normal operation of unit, diesel generating set on-site control position switch is placed in to " automatically " position, first security personnel's section work service entrance switch 3ZKK, second security personnel's section work service entrance switch 4ZKK, the 3rd security personnel's section work service entrance switch 8ZKK and the 4th security personnel's section work service entrance switch 9ZKK are for closing state, and first security personnel's section service entrance switch 1ZKK for subsequent use, second security personnel's section service entrance switch 2ZKK for subsequent use, the 3rd security personnel section service entrance switch 6ZKK for subsequent use and the 4th security personnel's section service entrance switch 7ZKK for subsequent use are for opening state.
When after the security personnel 1A section or security personnel 1B section section dead electricity of the work of #1 unit emergency power supply, delayed startup the first diesel engine generator 1 and the second diesel engine generator 2.If the first diesel engine generator 1 and the second diesel engine generator 2 all successfully start, close the first outlet breaker 10ZKK of the first diesel engine generator 1 and the second outlet breaker 11ZKK of the second diesel engine generator 2, do not conform to network interconnecting circuit 5ZKK, security personnel's section of two units is not arranged side by side; If the first diesel engine generator 1 starts successfully, the second diesel engine generator 2 starts unsuccessful, close the first outlet breaker 10ZKK of the first diesel engine generator 1, do not conform to network interconnecting circuit 5ZKK, the second diesel engine generator 2 is to DCSDistributed control system simultaneously, and thermal power plant scattered control system is sent and started unsuccessful signal; If it is unsuccessful that the first diesel engine generator 1 starts, the second diesel engine generator 2 starts successfully, closes the second outlet breaker 11ZKK of the second diesel engine generator 2, and closes network interconnecting circuit 5ZKK, and the first diesel engine generator 1 sends and starts unsuccessful signal to DCS simultaneously; If it is unsuccessful that two diesel engine generators all start, two diesel engine generators are all sent out and are started unsuccessful signal to DCS.
When after the security personnel 2A section or security personnel 2B section dead electricity of the work of #2 unit emergency power supply, delayed startup the first diesel engine generator 1 and the second diesel engine generator 2.If the first diesel engine generator 1 and the second diesel engine generator 2 all successfully start, close the first outlet breaker 10ZKK of the first diesel engine generator 1 and the second outlet breaker 11ZKK of the second diesel engine generator 2, discord network interconnecting circuit 5ZKK, two unit security personnel sections are not arranged side by side; If the second diesel engine generator 2 starts successfully, the first diesel engine generator 1 starts unsuccessful, closes the second outlet breaker 11ZKK of the second diesel engine generator 2, does not conform to network interconnecting circuit 5ZKK, and the first diesel engine generator 1 sends and starts unsuccessful signal to DCS simultaneously; If it is unsuccessful that the second diesel engine generator 2 starts, the first diesel engine generator 1 starts successfully, closes the first outlet breaker 10ZKK of the first diesel engine generator 1, and closes network interconnecting circuit 5ZKK, and the second diesel engine generator 2 sends and starts unsuccessful signal to DCS simultaneously; If it is unsuccessful that two diesel engine generators all start, two diesel engine generators are all sent out and are started unsuccessful signal to DCS.
When after #1, #2 organizational security peace power work section while dead electricity, delayed startup the first diesel engine generator 1 and the second diesel engine generator 2.If the first diesel engine generator 1 and the second diesel engine generator 2 all successfully start, close the first outlet breaker 10ZKK of the first diesel engine generator 1 and the second outlet breaker 11ZKK of the second diesel engine generator 2, do not conform to network interconnecting circuit 5ZKK, two unit security personnel sections are not arranged side by side; If it is unsuccessful that two diesel engine generators all start, two diesel engine generators are all sent out and are started unsuccessful signal to DCS.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by submitted to claims.
Claims (2)
1. be applied to thermal power plant's two-shipper twin diesel group and start band emergency power supply system simultaneously, it is characterized in that: comprise the first diesel engine generator (1) and the second diesel engine generator (2), wherein,
The output of the first diesel engine generator (1) is connected with the input of first paragraph diesel engine generator bus by the first outlet breaker (10ZKK), an output of first paragraph diesel engine generator bus is connected with the input of security personnel 1A section by first security personnel's section service entrance switchs for subsequent use (1ZKK), the output of security personnel 1A section is connected with the input of boiler 1A section by first security personnel's section work service entrance switchs (3ZKK), another output of first paragraph diesel engine generator bus is connected with the input of security personnel 1B section by second security personnel's section service entrance switchs for subsequent use (2ZKK), security personnel 1B section output is connected with the input of boiler 1B section by second security personnel's section work service entrance switchs (4ZKK),
The output of the second diesel engine generator (2) is connected with the input of second segment diesel engine generator bus by the second outlet breaker (11ZKK), an output of second segment diesel engine generator bus is connected with the input of security personnel 2A section by the 3rd security personnel's section service entrance switchs for subsequent use (6ZKK), the output of security personnel 2A section is connected with the input of boiler 2A section by the 3rd security personnel's section work service entrance switchs (8ZKK), another output of second segment diesel engine generator bus is connected with the input of security personnel 2B section by the 4th security personnel's section service entrance switchs for subsequent use (7ZKK), the output of security personnel 2B section is connected with the input of boiler 2B section by the 4th security personnel's section work service entrance switchs (9ZKK),
Between first paragraph diesel engine generator bus and second segment diesel engine generator bus, be connected by network interconnecting circuit (5ZKK).
2. the thermal power plant's two-shipper twin diesel group that is applied to according to claim 1 starts band emergency power supply system simultaneously, it is characterized in that: the input of boiler 1A section is provided with the first boiler section work service entrance switch (3ZKK '), the input of boiler 1B section is provided with the second boiler section work service entrance switch (4ZKK '), input the 3rd boiler section work service entrance switch (8ZKK ') of boiler 2A section, input the 4th boiler section work service entrance switch (9ZKK ') of boiler 2B section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418884.8U CN204012909U (en) | 2014-07-28 | 2014-07-28 | Be applied to thermal power plant's two-shipper twin diesel group and start band emergency power supply system simultaneously |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420418884.8U CN204012909U (en) | 2014-07-28 | 2014-07-28 | Be applied to thermal power plant's two-shipper twin diesel group and start band emergency power supply system simultaneously |
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| CN204012909U true CN204012909U (en) | 2014-12-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186575A (en) * | 2015-11-05 | 2015-12-23 | 上海科泰电源股份有限公司 | Diesel generating set parallel operation system for safety source of thermal power plant |
| CN110957805A (en) * | 2019-11-20 | 2020-04-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Black start power supply control device and method based on extension unit |
| CN112671099A (en) * | 2020-12-10 | 2021-04-16 | 安徽邮电职业技术学院 | Power monitoring system of power generation equipment |
-
2014
- 2014-07-28 CN CN201420418884.8U patent/CN204012909U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186575A (en) * | 2015-11-05 | 2015-12-23 | 上海科泰电源股份有限公司 | Diesel generating set parallel operation system for safety source of thermal power plant |
| CN110957805A (en) * | 2019-11-20 | 2020-04-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Black start power supply control device and method based on extension unit |
| CN110957805B (en) * | 2019-11-20 | 2021-10-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Black start power supply control device and method based on extension unit |
| CN112671099A (en) * | 2020-12-10 | 2021-04-16 | 安徽邮电职业技术学院 | Power monitoring system of power generation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
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| CP03 | Change of name, title or address |
Address after: 22 No. 710075, unity South Road, hi tech Industrial Development Zone, Shaanxi, Xi'an Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation |