CN111509779A - Parallel bus multi-output power supply and switching control system of diesel generating set - Google Patents
Parallel bus multi-output power supply and switching control system of diesel generating set Download PDFInfo
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- CN111509779A CN111509779A CN202010353086.1A CN202010353086A CN111509779A CN 111509779 A CN111509779 A CN 111509779A CN 202010353086 A CN202010353086 A CN 202010353086A CN 111509779 A CN111509779 A CN 111509779A
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- 238000012545 processing Methods 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
Abstract
The invention discloses a power supply and switching control system for a parallel bus of a diesel generating set, which comprises a main control cabinet, a machine side control cabinet, a standby control cabinet and a monitoring processing module, wherein the main control cabinet is connected with the machine side control cabinet through a bus; the operating parameters of the 18-path output high-voltage switch cabinets of the diesel generating set, the parallel bus, the feeder bus, the diesel generating set parallel switch cabinet, the parallel bus main output switch cabinet and the feeder bus are provided for a client to remotely monitor by controlling the parallel operation of the diesel generating set, the parallel bus main output loop and the 18-path feeder high-voltage switch cabinet output by the feeder bus, and the operating parameters of the 18-path output high-voltage switch cabinets of the diesel generating set, the parallel bus, the feeder bus, the diesel generating set parallel switch cabinet, the parallel bus main output switch cabinet and the feeder bus are prevented from being incapable of reasonably regulating and controlling the corresponding diesel generating set when the main control cabinet breaks down, so that the diesel generating set is damaged, the resource waste is caused, the maintenance time is saved, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of diesel generating sets, in particular to a parallel bus multi-output power supply and switching control system of a diesel generating set.
Background
The diesel generator is a small power generating equipment, and is a power machine using diesel oil as fuel and using diesel engine as prime mover to drive generator to generate power. The whole set of unit generally comprises a diesel engine, a generator, a control box, a fuel tank, a storage battery for starting and controlling, a protection device, an emergency cabinet and other parts, and when people use the diesel generator in life, the engine, the generator and a control system form a diesel generator set.
The existing diesel generator set is integrally controlled by a control cabinet, when the control cabinet is damaged, the diesel generator set cannot be continuously controlled, the diesel generator set cannot run after the control cabinet is damaged, and the working efficiency is reduced.
Disclosure of Invention
The invention aims to provide a multi-output power supply and switching control system for a parallel operation bus of a diesel generating set, which can solve the problem that the switching control of the diesel generating set cannot be realized in the prior art and avoid the problem that the main control cabinet cannot reasonably regulate and control the corresponding diesel generating set when the main control cabinet fails by controlling the parallel operation of the diesel generating set, a parallel operation bus main output loop and an 18-way feeder high-voltage switch cabinet output by a feeder bus, and intensively monitoring and controlling the 18-way output high-voltage switch cabinets of the diesel generating set, the parallel operation bus, the feeder bus, the parallel operation switch cabinet of the diesel generating set, the parallel operation bus main output switch cabinet and the feeder bus, and providing the operating parameters of the 18-way output high-voltage switch cabinets for a client for remote monitoring, the damage of the diesel generating set is caused, the waste of resources is caused, the maintenance time is saved, and the working efficiency is improved.
The aim of the invention can be realized by the following technical proposal that the parallel bus multi-output power supply and switching control system of the diesel generating set comprises a main control cabinet, a machine side control cabinet, a plurality of groups of diesel generating sets, a P L C controller, a standby control cabinet and a monitoring processing module;
after receiving the commercial power fault signal, the main control cabinet sends a startup signal to the machine-side control cabinet in a communication mode;
when the parallel operation of the second diesel generator set is completed, the main control cabinet switches on the parallel output high-voltage switch cabinet to supply power to the feeder bus, and simultaneously sends a primary unloading signal, a secondary unloading signal and a tertiary unloading signal to the main control cabinet P L C controller, and the main control cabinet switches on the feeder switch cabinet to supply power to a load according to the unloading signal;
the main control cabinet and the standby control cabinet are controlled in a redundancy mode, when the main control cabinet fails, the main control cabinet and the standby control cabinet are switched to the standby control cabinet continuously, when the mains supply is recovered, the main control cabinet and the standby control cabinet control the diesel generator set to regulate voltage and feed voltage signals back to the CTTS, and when the CTTS detects that the diesel generator set and the mains supply are in synchronization within a set range, the load is transferred to a mains supply end quickly.
As a further improvement of the invention: and the CTTS is arranged in the detection processing module and used for detecting the diesel generator set and the commercial power.
As a further improvement of the invention: the detection processing module comprises an acquisition unit, an analysis processing unit, a transmission unit, a login unit and a remote control unit;
the acquisition unit is used for acquiring relevant equipment information in the control process and transmitting the equipment information to the analysis processing unit, and the analysis processing unit is used for carrying out analysis processing operation on the equipment information to obtain first-level waiting time, second-level waiting time and third-level waiting time and transmitting the first-level waiting time, the second-level waiting time and the third-level waiting time to the CTTS through the transmission unit;
the CTTS detects the diesel generator set and the commercial power at regular time according to the corresponding first-level waiting time, second-level waiting time and third-level waiting time;
the login unit is used for logging in a user side account of the control system, a user can check related data in the whole control process and timing detection time corresponding to the CTTS in the user side, and the timing detection time and control transmission of the CTTS are manually adjusted through the remote control unit.
As a further improvement of the invention: the specific operation process of the analysis processing operation comprises the following steps:
the method comprises the following steps: acquiring equipment information, splitting a plurality of groups of diesel generator sets in the equipment information, and setting a serial number for each split diesel generator set;
step two: acquiring real-time current data and real-time voltage data corresponding to the diesel generator set, bringing the real-time current data and the real-time voltage data into a product calculation formula, calculating the product of the current data and the voltage data, and marking the product as the rated output power of the motor;
step three: acquiring real-time current data and real-time voltage data of the commercial power, and bringing the real-time current data and the real-time voltage data into a product calculation formula, thereby calculating the commercial power rated output power of the commercial power;
step four: acquiring output time data of a diesel generator set and a mains supply, and sequentially marking the output time data as motor working time length data and mains supply working time length data;
step five: obtaining the rated output power of the mains supply, the rated output power of the motor, the working time length data of the motor and the working time length data of the mains supply, and respectively bringing the obtained rated output power of the mains supply, the rated output power of the motor, the working time length data of the motor and the working time length data of the mains supply into corresponding formulas: the actual output value is rated output power and working duration and is a transformation influence factor, wherein the value of the transformation influence factor is 0.315427, and the actual output value of the diesel generator set and the actual output value of the commercial power are obtained;
step six: calculating difference values of actual output values of the diesel generating set and the commercial power to obtain a difference value between the actual output values of the diesel generating set and the commercial power, calculating self change difference values of rated output change values of the diesel generating set and the commercial power at different time, dividing the self change difference values by change time to obtain output change speed of the diesel generating set and output change speed of the commercial power, calculating speed difference value change between the diesel generating set and the commercial power according to the speed difference value change, and calculating predicted arrival time of the speed difference value change and the actual output value to obtain predicted time data;
step seven: and grading the predicted time data, setting a preset grading value, comparing the preset grading value with the predicted time data, and judging whether the preset grading value is smaller than the preset value, equal to the preset value and larger than the preset value sequentially to obtain first-level waiting time, second-level waiting time and third-level waiting time.
The invention has the beneficial effects that:
1. the operating parameters of the 18-path output high-voltage switch cabinets of the diesel generating set, the parallel bus, the feeder bus, the diesel generating set parallel switch cabinet, the parallel bus main output switch cabinet and the feeder bus are provided for a client to remotely monitor by controlling the parallel operation of the diesel generating set, the parallel bus main output loop and the 18-path feeder high-voltage switch cabinet output by the feeder bus, and the operating parameters of the 18-path output high-voltage switch cabinets of the diesel generating set, the parallel bus, the feeder bus, the diesel generating set parallel switch cabinet, the parallel bus main output switch cabinet and the feeder bus are prevented from being incapable of reasonably regulating and controlling the corresponding diesel generating set when the main control cabinet breaks down, so that the diesel generating set is damaged, the resource waste is caused, the maintenance time is saved, and the working efficiency is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a system block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a system for multiplexing output power supply and switching control of a parallel bus of a diesel generator set, which includes a main control cabinet, a side control cabinet, a plurality of diesel generator sets, a P L C controller, a standby control cabinet and a monitoring processing module;
after receiving the commercial power fault signal, the main control cabinet sends a startup signal to the machine-side control cabinet in a communication mode;
when the parallel operation of the second diesel generator set is completed, the main control cabinet switches on the parallel output high-voltage switch cabinet to supply power to the feeder bus, and simultaneously sends a primary unloading signal, a secondary unloading signal and a tertiary unloading signal to the main control cabinet P L C controller, and the main control cabinet switches on the feeder switch cabinet to supply power to a load according to the unloading signal;
the main control cabinet and the standby control cabinet are controlled in a redundancy mode, when the main control cabinet fails, the main control cabinet and the standby control cabinet are switched to the standby control cabinet continuously, when the mains supply is recovered, the main control cabinet and the standby control cabinet control the diesel generator set to regulate voltage and feed voltage signals back to the CTTS, and when the CTTS detects that the diesel generator set and the mains supply are in synchronization within a set range, the load is transferred to a mains supply end quickly.
And the CTTS is arranged in the detection processing module and used for detecting the diesel generator set and the commercial power.
The detection processing module comprises an acquisition unit, an analysis processing unit, a transmission unit, a login unit and a remote control unit;
the acquisition unit is used for acquiring relevant equipment information in the control process and transmitting the equipment information to the analysis processing unit, and the analysis processing unit is used for carrying out analysis processing operation on the equipment information to obtain first-level waiting time, second-level waiting time and third-level waiting time and transmitting the first-level waiting time, the second-level waiting time and the third-level waiting time to the CTTS through the transmission unit;
the CTTS detects the diesel generator set and the commercial power at regular time according to the corresponding first-level waiting time, second-level waiting time and third-level waiting time;
the login unit is used for logging in a user side account of the control system, a user can check related data in the whole control process and timing detection time corresponding to the CTTS in the user side, and the timing detection time and control transmission of the CTTS are manually adjusted through the remote control unit.
The specific operation process of the analysis processing operation comprises the following steps:
the method comprises the following steps: acquiring equipment information, splitting a plurality of groups of diesel generator sets in the equipment information, and setting a serial number for each split diesel generator set;
step two: acquiring real-time current data and real-time voltage data corresponding to the diesel generator set, bringing the real-time current data and the real-time voltage data into a product calculation formula, calculating the product of the current data and the voltage data, and marking the product as the rated output power of the motor;
step three: acquiring real-time current data and real-time voltage data of the commercial power, and bringing the real-time current data and the real-time voltage data into a product calculation formula, thereby calculating the commercial power rated output power of the commercial power;
step four: acquiring output time data of a diesel generator set and a mains supply, and sequentially marking the output time data as motor working time length data and mains supply working time length data;
step five: obtaining the rated output power of the mains supply, the rated output power of the motor, the working time length data of the motor and the working time length data of the mains supply, and respectively bringing the obtained rated output power of the mains supply, the rated output power of the motor, the working time length data of the motor and the working time length data of the mains supply into corresponding formulas: the actual output value is rated output power and working duration and is a transformation influence factor, wherein the value of the transformation influence factor is 0.315427, and the actual output value of the diesel generator set and the actual output value of the commercial power are obtained;
step six: calculating difference values of actual output values of the diesel generating set and the commercial power to obtain a difference value between the actual output values of the diesel generating set and the commercial power, calculating self change difference values of rated output change values of the diesel generating set and the commercial power at different time, dividing the self change difference values by change time to obtain output change speed of the diesel generating set and output change speed of the commercial power, calculating speed difference value change between the diesel generating set and the commercial power according to the speed difference value change, and calculating predicted arrival time of the speed difference value change and the actual output value to obtain predicted time data;
step seven: and grading the predicted time data, setting a preset grading value, comparing the preset grading value with the predicted time data, and judging whether the preset grading value is smaller than the preset value, equal to the preset value and larger than the preset value sequentially to obtain first-level waiting time, second-level waiting time and third-level waiting time.
When the main control cabinet fails, the main control cabinet and the standby control cabinet are uninterruptedly switched to the standby control cabinet, when the mains supply is recovered, the main control cabinet and the standby control cabinet control the diesel generator set to regulate the voltage and feed back voltage signals to the CTTS, and when the CTTS detects that the diesel generator set and the mains supply synchronously reach a set range, the loads are quickly transferred to the mains supply end.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (4)
1. The system is characterized by comprising a main control cabinet, a machine side control cabinet, a plurality of groups of diesel generator sets, a P L C controller, a standby control cabinet and a monitoring processing module;
after receiving the commercial power fault signal, the main control cabinet sends a startup signal to the machine-side control cabinet in a communication mode;
when the parallel operation of the second diesel generator set is completed, the main control cabinet switches on the parallel output high-voltage switch cabinet to supply power to the feeder bus, and simultaneously sends a primary unloading signal, a secondary unloading signal and a tertiary unloading signal to the main control cabinet P L C controller, and the main control cabinet switches on the feeder switch cabinet to supply power to a load according to the unloading signal;
the main control cabinet and the standby control cabinet are controlled in a redundancy mode, when the main control cabinet fails, the main control cabinet and the standby control cabinet are switched to the standby control cabinet continuously, when the mains supply is recovered, the main control cabinet and the standby control cabinet control the diesel generator set to regulate voltage and feed voltage signals back to the CTTS, and when the CTTS detects that the diesel generator set and the mains supply are in synchronization within a set range, the load is transferred to a mains supply end quickly.
2. The system for multipath output power supply and switching control of the parallel buses of the diesel generating set according to claim 1, wherein the CTTS is arranged in the detection processing module and is used for detecting the diesel generating set and the commercial power.
3. The system for multipath output power supply and switching control of the parallel buses of the diesel generating set according to claim 1, wherein the detection processing module comprises an acquisition unit, an analysis processing unit, a transmission unit, a login unit and a remote control unit;
the acquisition unit is used for acquiring relevant equipment information in the control process and transmitting the equipment information to the analysis processing unit, and the analysis processing unit is used for carrying out analysis processing operation on the equipment information to obtain first-level waiting time, second-level waiting time and third-level waiting time and transmitting the first-level waiting time, the second-level waiting time and the third-level waiting time to the CTTS through the transmission unit;
the CTTS detects the diesel generator set and the commercial power at regular time according to the corresponding first-level waiting time, second-level waiting time and third-level waiting time;
the login unit is used for logging in a user side account of the control system, a user can check related data in the whole control process and timing detection time corresponding to the CTTS in the user side, and the timing detection time and control transmission of the CTTS are manually adjusted through the remote control unit.
4. The system for multipath output power supply and switching control of the parallel bus of the diesel generating set according to claim 1, wherein the specific operation process of the analysis processing operation is as follows:
the method comprises the following steps: acquiring equipment information, splitting a plurality of groups of diesel generator sets in the equipment information, and setting a serial number for each split diesel generator set;
step two: acquiring real-time current data and real-time voltage data corresponding to the diesel generator set, bringing the real-time current data and the real-time voltage data into a product calculation formula, calculating the product of the current data and the voltage data, and marking the product as the rated output power of the motor;
step three: acquiring real-time current data and real-time voltage data of the commercial power, and bringing the real-time current data and the real-time voltage data into a product calculation formula, thereby calculating the commercial power rated output power of the commercial power;
step four: acquiring output time data of a diesel generator set and a mains supply, and sequentially marking the output time data as motor working time length data and mains supply working time length data;
step five: obtaining the rated output power of the mains supply, the rated output power of the motor, the working time length data of the motor and the working time length data of the mains supply, and respectively bringing the obtained rated output power of the mains supply, the rated output power of the motor, the working time length data of the motor and the working time length data of the mains supply into corresponding formulas: the actual output value is rated output power and working duration and is a transformation influence factor, wherein the value of the transformation influence factor is 0.315427, and the actual output value of the diesel generator set and the actual output value of the commercial power are obtained;
step six: calculating difference values of actual output values of the diesel generating set and the commercial power to obtain a difference value between the actual output values of the diesel generating set and the commercial power, calculating self change difference values of rated output change values of the diesel generating set and the commercial power at different time, dividing the self change difference values by change time to obtain output change speed of the diesel generating set and output change speed of the commercial power, calculating speed difference value change between the diesel generating set and the commercial power according to the speed difference value change, and calculating predicted arrival time of the speed difference value change and the actual output value to obtain predicted time data;
step seven: and grading the predicted time data, setting a preset grading value, comparing the preset grading value with the predicted time data, and judging whether the preset grading value is smaller than the preset value, equal to the preset value and larger than the preset value sequentially to obtain first-level waiting time, second-level waiting time and third-level waiting time.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794223A (en) * | 2021-08-03 | 2021-12-14 | 烟台杰瑞石油装备技术有限公司 | Parallel operation control system of generator set |
| CN114301164A (en) * | 2021-11-25 | 2022-04-08 | 北京百度网讯科技有限公司 | Data center diesel generating set and control system thereof |
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| REN-HUA WU: ""A manipulation and control scheme of paralleled diesel-generating sets in China"", 《PROCEEDINGS] FOURTEENTH INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE - INTELEC "92》 * |
| 孔凡何，阮阳: ""核电厂SBO应急柴油发电机组方案设计与应用"", 《电气应用》 * |
| 薛成林: ""大型数据中心柴发作备用电源系统型式探讨"", 《建筑电气》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794223A (en) * | 2021-08-03 | 2021-12-14 | 烟台杰瑞石油装备技术有限公司 | Parallel operation control system of generator set |
| CN113794223B (en) * | 2021-08-03 | 2023-04-18 | 烟台杰瑞石油装备技术有限公司 | Parallel operation control system of generator set |
| CN114301164A (en) * | 2021-11-25 | 2022-04-08 | 北京百度网讯科技有限公司 | Data center diesel generating set and control system thereof |
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| Publication number | Publication date |
|---|---|
| CN111509779B (en) | 2021-09-07 |
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