CN103580062A - Grid-connected control system used for triple co-generation system - Google Patents
Grid-connected control system used for triple co-generation system Download PDFInfo
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- CN103580062A CN103580062A CN201310539104.5A CN201310539104A CN103580062A CN 103580062 A CN103580062 A CN 103580062A CN 201310539104 A CN201310539104 A CN 201310539104A CN 103580062 A CN103580062 A CN 103580062A
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Abstract
The invention discloses a grid-connected control system used for a triple co-generation system. The grid-connected control system comprises a mains supply bus, an electric generator, a load, a switch connected with the electric generator or the mains supply bus selectively to provide electricity for the load, a main control PLC controlling the electric generator to start or stop through a replay array control cabinet, a grid-connected PLC controlling the switch automatically for grid-connected selection according to the control logic set by the main control PLC, and a monitoring host used for controlling the main control PLC remotely, wherein a touch screen is arranged on the main control PLC to be used for control logic setting of the system. According to the grid-connected control system used for the triple co-generation system, impact on a mains supply power grid is small during grid-connected power generation, technical support is provided for safe and reliable grid connection, and application prospect is wide.
Description
Technical field
The present invention relates to civilian electric power supply technique field, specifically refer to a kind of grid-connection control system for combined supply system.
Background technology
" three alliances " is again distributed energy supply, uses natural gas power, then the waste heat ，Xiang building heat supply or the cooling that with generating, produce, makes energy cascade utilization.This is equivalent to Jiang“ power plant " be built to enterprise " doorway ", especially in hotel, large electricity consumer's periphery such as hospital, office building, factory building, generating efficiency can improve more than 70%, waste heat energy meets the multiple demands such as people's refrigeration, heating, domestic hot-water, steam simultaneously.In the situation that traditional energy is day by day deficient and the policy support of country to the economizing type energy, combined supply system has good market prospects.In combined supply system and an important ring be exactly to realize system and network grid-connected power.
Summary of the invention
For above the deficiencies in the prior art, the invention provides for a kind of grid-connection control system for combined supply system, 2 cover PLC and touch-screen are set and carry out grid-connected logic control, gather generating set service data, realize the demonstration on the spot of switch running status, generating set data and fault message, reduce combined supply system impact to utility grid when generating electricity by way of merging two or more grid systems, for the safe and reliable grid-connected technical guarantee that provides is provided, be with a wide range of applications.
Realize above-mentioned purpose, the invention provides a kind of grid-connection control system for combined supply system, comprise civil power bus, generator, load, selection connect the switch of generator and civil power bus powering load, by the grid-connected PLC that relay array control cubicle is controlled the main control PLC of generator start and stop, the control logic automatic control switch set according to main control PLC carries out grid-connected selection.
In above-mentioned control system: described main control PLC is provided with touch-screen.
The grid-connection control system of above-mentioned combined supply system also comprises monitoring host computer, for Long-distance Control main control PLC.
Above-mentioned grid-connection control system, described generator has two, by parallel way, is connected to civil power bus.
Above-mentioned grid-connection control system, described main control PLC is connected with relay array communication by bus.
Above-mentioned grid-connection control system, described switch is automatic circuit breaker.
Above-mentioned grid-connection control system, described switch comprises that being connected to the engine circuit breaker (6,8) of generator both sides and switch (7,9), the grid-connected circuit breaker of civil power bus (1), the engine cluster engine after is side by side linked into isolation circuit breakers (5) and the cluster engine circuit breaker (4) on bus.
The invention has the advantages that: (1) can freely select the generating that whether is connected to the grid according to region energy supply situation, nimbly and freely; (2) realize energy cascade utilization, improve energy utilization rate, accord with the demands of the market; (3) adopt PLC Based Intelligent Control, operation information shows on the spot, safe and reliable.Control system of the present invention is supported two kinds of control modes: control on the spot and distant place control, be applicable to medium-and-large-sized, require directly in background monitoring chamber directly controlled occasion, reduce manually on duty, and can be according to region situation, whether and operational mode the operation of the selection generating set of intelligence automatically.Background monitoring center can monitor unit operation situation intuitively, issuing control order flexibly.
Accompanying drawing explanation
Fig. 1 is the grid-connection control system of combined supply system;
The grid-connected circuit breaker of 1.UM(civil power bus wherein), 2. load switch, 3. load, 4.GM(cluster engine circuit breaker), 5.GL(isolation circuit breakers), 6 first generator circuit breakers, 7.NGR1,8. the second generator circuit breaker, 9.NGR2,10. resistance.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme.
As shown in Figure 1, the grid-connection control system of combined supply system comprise civil power bus, generator, load, selection connect the switch of generator and civil power bus powering load, by the grid-connected PLC that relay array control cubicle is controlled the main control PLC of generator start and stop, the control logic automatic control switch set according to main control PLC carries out grid-connected selection, main control PLC is provided with touch-screen, this system also comprises monitoring host computer, for Long-distance Control main control PLC.Wherein generator has two, by parallel way, is connected to civil power bus.Main control PLC is connected with relay array communication by bus.Above-mentioned switch is automatic circuit breaker, comprise that being connected to the engine circuit breaker (6,8) of generator both sides and switch (7,9), the grid-connected circuit breaker of civil power bus (1), the engine cluster engine after is side by side linked into isolation circuit breakers (5) and the cluster engine circuit breaker (4) on bus.
Control system be take two generating sets as one group, according to the interior transformer in 4 kinds of different operational modes and station, forms grid-connected electric power system and the grid-connected online electric power system of not surfing the Net.Present mode of operation can be selected or by the long-range setting of monitoring host computer on main control PLC touch-screen, after selected operational mode, grid-connected master control cabinet (grid-connected PLC) will carry out grid-connected control automatically according to the control logic of setting, and its control procedure needn't rely on monitoring host computer and communication network.4 kinds of different operational mode control logics are as follows:
Operational mode 1(is grid-connected not to surf the Net):
The closed station internal burden of giving of UM is powered, and bus connection switch TIE is extracting position out, and GL is closed for generating set outlet isolating switch.Generating set starts after receiving the enabling signal of being sent by master control cabinet automatically, and automatic synchronization after generating set starts, signals to master control cabinet after synchronously completing.Master control cabinet arranges according to " manually grid-connected " or " auto-parallel " set after receiving synchronous settling signal, provide respectively and allow manual grid-connected signal to wait for manually grid-connected or auto-closing generating set gate out switch G1, G2, and complete and being incorporated into the power networks of civil power by GM.This pattern is grid-connectedly not surf the Net, and institute's electricity is by personal in energy source station.The actual load size that generating set detects according to system automatically regulator generator load output equals 90% of actual load size, and other 10% load, by commercial power supply, so just can guarantee to generate electricity and can not arrive and be poured into civil power, and carry out load management.
Operational mode 2(island mode):
UM disconnects station internal burden power supply, and bus connection switch TIE is extracting position out, and GL is closed for generating set outlet isolating switch.Generating set starts after receiving the enabling signal of being sent by master control cabinet automatically, and automatic synchronization after generating set starts, signals to master control cabinet after synchronously completing.Master control cabinet arranges according to " manually grid-connected " or " auto-parallel " set after receiving synchronous settling signal, and provide respectively and allow manual grid-connected signal to wait for manually grid-connected or auto-closing generating set gate out switch G1, G2, and by GM powering load.This pattern is island mode, and institute's electricity is by personal in energy source station.The actual load size regulator generator load output automatically that generating set detects according to system.And carry out load management.
The outer grid-connected online in operational mode 3(station):
Through change over switch by the generating busbar conversion outer feeder ear that arrives at a station.Generating set starts after receiving the enabling signal of being sent by master control cabinet automatically, and automatic synchronization after generating set starts, signals to master control cabinet after synchronously completing.Master control cabinet receives after synchronous settling signal and arranges according to " manually grid-connected " or " auto-parallel " set, provides respectively and allows manual grid-connected signal to wait for that manual grid-connected or auto-closing generating set gate out switch GM completes and being incorporated into the power networks of civil power.If city's electro-mechanical wave or power-off in service, detected, by master control cabinet, disconnect UM.City power recovery normally by certain time-delay master control cabinet, disconnects Generator Outlet Switchgear GM but generator is not shut down, and closed UM, signals to master control cabinet after again being synchronizeed with civil power by generating set, and after master control cabinet is received synchronous settling signal, closed GM completes with civil power grid-connected.This pattern is grid-connected online, and by Zhan Wai civil power, outer net sale of electricity is directly gone up by transformer station.Generating set should be fixed within the scope of 95% rated power and generate electricity according to system command.
Grid-connected online in operational mode 4(station):
The closed station internal burden of giving of UM is powered. and generating set starts after receiving the enabling signal of being sent by master control cabinet automatically, and automatic synchronization after generating set starts, signals to master control cabinet after synchronously completing.After master control cabinet is received synchronous settling signal, auto-closing generating set gate out switch GM completes 2 parallel machine operations.After parallel running completes, master control cabinet can be according to the significance level of load according to certain time interval connecting system progressively, avoids the impact that simultaneously adds, and load classification is temporarily by 4 grades of distribution.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (7)
1. for a grid-connection control system for combined supply system, it is characterized in that: comprise that civil power bus, generator, load, selection connect the switch of generator and civil power bus powering load, by relay array, control the main control PLC of generator start and stop, the grid-connected PLC that carries out grid-connected selection according to the control logic automatic control switch of main control PLC setting.
2. the grid-connection control system for combined supply system according to claim 1, is characterized in that: described main control PLC is provided with touch-screen.
3. the grid-connection control system for combined supply system according to claim 1, is characterized in that: this system also comprises monitoring host computer, for Long-distance Control main control PLC.
4. the grid-connection control system for combined supply system according to claim 1, is characterized in that: described generator has two, by parallel way, is connected to civil power bus.
5. the grid-connection control system for combined supply system according to claim 1, is characterized in that: described main control PLC is connected with relay array by bus.
6. the grid-connection control system for combined supply system according to claim 1, is characterized in that: described switch is automatic circuit breaker.
7. the grid-connection control system for combined supply system according to claim 1, it is characterized in that: described switch comprises that being connected to the engine circuit breaker (6,8) of generator both sides and switch (7,9), the grid-connected circuit breaker of civil power bus (1), the engine cluster engine after is side by side linked into isolation circuit breakers (5), cluster engine circuit breaker (4) and the load switch (2) on bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310539104.5A CN103580062B (en) | 2013-11-04 | 2013-11-04 | Grid-connection control system for combined supply system |
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| CN201310539104.5A CN103580062B (en) | 2013-11-04 | 2013-11-04 | Grid-connection control system for combined supply system |
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| CN103580062B CN103580062B (en) | 2016-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390941A (en) * | 2018-12-21 | 2019-02-26 | 重庆樱花能源科技有限公司 | A kind of electric power distribution system for distributing-supplying-energy system |
| CN110138017A (en) * | 2019-06-21 | 2019-08-16 | 四川大通睿恒能源有限公司 | The control system tested for gas electricity generator in cold, heat and power triple supply system |
| CN111679614A (en) * | 2020-06-29 | 2020-09-18 | 潍柴重机股份有限公司 | Engine remote control system and control method |
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| JP2006280082A (en) * | 2005-03-29 | 2006-10-12 | Chugoku Electric Power Co Inc:The | Power distribution controller and monitoring method |
| CN101086200A (en) * | 2007-07-13 | 2007-12-12 | 中国海洋石油总公司 | Drill platform power management system |
| CN101741022A (en) * | 2009-10-31 | 2010-06-16 | 华南理工大学 | PLC-based distribution cabinet of middle/small-size wind-solar hybrid generation system |
| CN102810876A (en) * | 2011-06-01 | 2012-12-05 | 杭州市燃气（集团）有限公司 | Parallel grid-connected combined cooling, heating and power control system using programmable logic controller (PLC) to control multiple generators |
| CN203734324U (en) * | 2013-11-04 | 2014-07-23 | 安徽鑫龙电器股份有限公司 | Grid-connected control system for tri-generation system |
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2013
- 2013-11-04 CN CN201310539104.5A patent/CN103580062B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006280082A (en) * | 2005-03-29 | 2006-10-12 | Chugoku Electric Power Co Inc:The | Power distribution controller and monitoring method |
| CN101086200A (en) * | 2007-07-13 | 2007-12-12 | 中国海洋石油总公司 | Drill platform power management system |
| CN101741022A (en) * | 2009-10-31 | 2010-06-16 | 华南理工大学 | PLC-based distribution cabinet of middle/small-size wind-solar hybrid generation system |
| CN102810876A (en) * | 2011-06-01 | 2012-12-05 | 杭州市燃气（集团）有限公司 | Parallel grid-connected combined cooling, heating and power control system using programmable logic controller (PLC) to control multiple generators |
| CN203734324U (en) * | 2013-11-04 | 2014-07-23 | 安徽鑫龙电器股份有限公司 | Grid-connected control system for tri-generation system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390941A (en) * | 2018-12-21 | 2019-02-26 | 重庆樱花能源科技有限公司 | A kind of electric power distribution system for distributing-supplying-energy system |
| CN109390941B (en) * | 2018-12-21 | 2020-12-22 | 重庆樱花能源科技有限公司 | Power distribution system for distributed energy supply system |
| CN110138017A (en) * | 2019-06-21 | 2019-08-16 | 四川大通睿恒能源有限公司 | The control system tested for gas electricity generator in cold, heat and power triple supply system |
| CN111679614A (en) * | 2020-06-29 | 2020-09-18 | 潍柴重机股份有限公司 | Engine remote control system and control method |
| CN111679614B (en) * | 2020-06-29 | 2021-07-20 | 潍柴重机股份有限公司 | Remote control system and control method for generator |
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Address after: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District No. 118 North Park electrical components Applicant after: ANHUI SINONET & XINLONG SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District No. 118 North Park electrical components Applicant before: Anhui Xinlong Electric Appliance Co.,Ltd. |
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Effective date of registration: 20170512 Address after: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District No. 118 North Park electrical components Patentee after: ANHUI XINLONG AUTOMATION Co.,Ltd. Address before: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District No. 118 North Park electrical components Patentee before: ANHUI SINONET & XINLONG SCIENCE & TECHNOLOGY Co.,Ltd. |
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