CN111509786B - Parallel operation and parallel operation control system of diesel generating set - Google Patents
Parallel operation and parallel operation control system of diesel generating set Download PDFInfo
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- CN111509786B CN111509786B CN202010353117.3A CN202010353117A CN111509786B CN 111509786 B CN111509786 B CN 111509786B CN 202010353117 A CN202010353117 A CN 202010353117A CN 111509786 B CN111509786 B CN 111509786B
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a parallel operation and parallel operation control system of a diesel generating set, which comprises a parallel operation main control cabinet, a parallel operation control cabinet, a machine side control cabinet, a diesel generating set A, a diesel generating set B, a switching on/off brake and a control monitoring module; the main controller in the grid-connected main control cabinet receives the mains supply fault, commands the controller in the parallel operation control cabinet to send a signal for starting the diesel generator set in a communication mode, and the controller on the machine side controls the diesel generator set A and the diesel generator set B to be started after receiving the start model of the parallel operation control cabinet; according to the invention, through the arrangement of the parallel operation control cabinet and the machine side control cabinet, the synchronous judgment is carried out on the diesel generator set A and the diesel generator set B, and the judgment results are transmitted to the parallel network main control cabinet, so that the on-off of the outgoing line switch cabinet for controlling the parallel operation bus is realized, the parallel operation and the parallel network of the diesel generator sets of different brands are controlled, the time consumption of separate control is saved, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of diesel generators, in particular to a parallel operation and parallel operation control system of a diesel generator 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 generating sets control generators of a single brand, cannot perform grid-connected and parallel-connected control on the diesel generating sets of different brands, and therefore control efficiency is low when the generating sets of different brands operate, and working efficiency is low.
Disclosure of Invention
The invention aims to provide a parallel operation and grid connection control system of a diesel generating set, which is used for carrying out synchronous judgment on a diesel generating set A and a diesel generating set B through the arrangement of a parallel operation control cabinet and a machine side control cabinet and transmitting the judgment results to a grid connection main control cabinet according to the judgment results, so that the switching on and off of an outgoing line switch cabinet for controlling a parallel operation bus are carried out, the problem that parallel operation and grid connection control cannot be carried out on diesel generating sets of different brands in the prior art is solved, parallel operation and grid connection of the diesel generating sets of different brands are controlled, time consumption of separate control is saved, and working efficiency is improved.
The purpose of the invention can be realized by the following technical scheme: the parallel operation and parallel operation control system of the diesel generating set comprises a parallel operation main control cabinet, a parallel operation control cabinet, a machine side control cabinet, a diesel generating set A, a diesel generating set B and a switching on/off and control monitoring module;
the main controller in the grid-connected main control cabinet receives the mains supply fault, commands the controller in the parallel operation control cabinet to send a signal for starting the diesel generator set in a communication mode, and the controller on the machine side controls the diesel generator set A and the diesel generator set B to be started after receiving the start model of the parallel operation control cabinet;
the system comprises a diesel generating set A, a parallel machine control cabinet, a parallel machine switch cabinet, a communication main control cabinet, a parallel machine switch cabinet, a parallel machine bus, a parallel machine switch cabinet, a parallel machine switch, a switch-on/off switch and a switch-off switch, wherein the parallel machine switch cabinet is controlled by the machine control cabinet, the parallel machine switch cabinet is controlled by the parallel machine switch cabinet, the switch-on/off switch is controlled by the parallel machine switch cabinet according to conditions input from outside, and the parallel machine switch cabinet is controlled by the parallel machine switch cabinet.
As a further improvement of the invention: the diesel generator set A and the diesel generator set B are respectively two diesel generator sets of different brands.
As a further improvement of the invention: the control monitoring module is used for remotely monitoring the control of the diesel generator and comprises a collecting unit, an analyzing unit, a judging unit, an alarming unit, a client and a sending unit;
the system comprises a collecting unit, an analyzing unit, a judging unit and a judging unit, wherein the collecting unit is used for collecting operation control information of a grid-connected main control cabinet, a grid-connected control cabinet, a machine side control cabinet, a diesel generator set A, a diesel generator set B and a switching-on/switching-off switch and transmitting the operation control information to the analyzing unit;
the determination unit is configured to perform difference change determination on the time consumption difference, the range difference, and the interval difference, and specifically includes: setting preset values corresponding to the time consumption difference value, the range difference value and the interval difference value, judging the preset values with the time consumption difference value, the range difference value and the interval difference value, generating an overlarge difference signal when the time consumption difference value, the range difference value and the interval difference value are larger than the corresponding preset values, generating a normal signal when the time consumption difference value, the range difference value and the interval difference value belong to the corresponding preset values, generating an undersize difference signal when the time consumption difference value, the range difference value and the interval difference value are smaller than the corresponding preset values, and transmitting the generated signal to an alarm unit;
the alarm unit is used for converting the over-difference signal, the normal signal and the over-difference signal into an over-difference alarm, a normal alarm and an over-difference alarm, and sending the over-difference alarm, the normal alarm and the over-difference alarm to the client through the sending unit.
As a further improvement of the invention: the specific analysis process of data analysis is as follows:
the method comprises the following steps: classifying and marking the related data according to the operation control information, which specifically comprises the following steps:
acquiring operation control information, calibrating the types of diesel generator sets A and B in the operation control information into generator set model data, carrying out acquisition marking according to the model data of the generator sets, calibrating the time consumed by synchronous judgment of the diesel generator sets corresponding to the same generator model data in the operation control information as judgment time consumption data, calibrating the data size of a judgment value corresponding to the same generator model data in the operation control information as a judgment value range, and calibrating the time interval adopting the synchronous judgment corresponding to the same generator model data in the operation control information as interval time data;
step two: and D, performing classification calculation on the calibration values according to the calibration values in the step I, specifically:
summing the time-consuming data corresponding to the same generator set model data, and dividing the sum of the time-consuming data by the times to obtain the average value of the time-consuming data, and calibrating the average value as the time-consuming average value;
summing the data of each judgment numerical range corresponding to the same generator set model data, dividing the sum of the judgment numerical ranges by the times to obtain a mean value of the judgment numerical ranges, and calibrating the mean value as a range mean value;
calculating the mean value of the interval time data according to the same calculation mode, and calibrating the mean value as an interval mean value;
step three: calculating a variation difference value according to the time-consuming average value, the range average value and the interval average value calculated in the step two, specifically:
and establishing a rectangular coordinate system, marking the time-consuming average value, the range average value and the interval average value in each time in the rectangular coordinate system, calculating the difference value of the Y axis of the calculated average value after each time of statistics, marking the difference value as a time-consuming difference value, a range difference value and an interval difference value respectively, and transmitting the time-consuming difference value, the range difference value and the interval difference value to a judging unit.
The invention has the beneficial effects that:
the main controller in the grid-connected main control cabinet receives the mains supply fault, the controller in the parallel operation control cabinet is instructed to send a signal for starting the diesel generator set in a communication mode, and the controller on the machine side controls the diesel generator set A and the diesel generator set B to be started after receiving the start model of the parallel operation control cabinet; the method comprises the steps that a diesel generator set A is controlled by a machine side control cabinet to start, stop and protect, a diesel generator set B is controlled by the machine side control cabinet to start, stop and protect, a parallel machine control cabinet detects voltage of a parallel machine bus to perform synchronous judgment, after the synchronous judgment is completed, the parallel machine control cabinet controls a parallel machine switch cabinet to be switched on, after the parallel machine switch cabinet is switched on, the switching-on state of a parallel machine switch is fed back to the parallel machine control cabinet in a hard wiring mode, then the parallel machine control cabinet feeds back to a grid-connected main control cabinet in a communication mode, the grid-connected main control cabinet controls the switching-on and switching-off of an outgoing line switch cabinet of the parallel machine bus according to externally input conditions, the synchronous judgment is performed on the diesel generator set A and the diesel generator set B through the arrangement of the parallel machine control cabinet and the machine side control cabinet, the switching-on and switching-off of the outgoing line switch cabinet of the parallel machine bus is controlled according to the judgment result to be transmitted to the grid-connected main control cabinet, and switching-on the switching-on and switching-off of different diesel generator sets, parallel machine buses, and the parallel machine, the switching-on and the switching-off of different brands and the parallel machine, the switching-on and the switching-on of the parallel machine switching-off of the parallel machine switching-on and switching-on of the parallel machine switching-off of the parallel machine switching-on and the parallel machine switching-on of the parallel machine switching-off of the parallel machine switching-on of the parallel machine switching-on and the switching-on of the switching-off of the switching-on of the switching-off of the parallel machine switching-off of the switching-on of the parallel machine switching-on of the parallel machine switching-on the parallel machine switching-off of the switching-on of the parallel machine switching-on of the switching-on the switching-off of the switching-on of the switching-off of the switching-on of the switching-off of the switching-on of the switching-off switching-on the switching-on of the switching-on the, The grid connection is carried out for control, so that the time consumption of separate control 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 invention relates to a parallel operation and parallel operation control system of a diesel generator set, which comprises a parallel operation main control cabinet, a parallel operation control cabinet, a machine side control cabinet, a diesel generator set a, a diesel generator set B, a switching on/off brake and a control monitoring module;
the main controller in the grid-connected main control cabinet receives the mains supply fault, the controller in the parallel operation control cabinet is instructed to send a signal for starting the diesel generator set in a communication mode, and the controller on the machine side controls the diesel generator set A and the diesel generator set B to be started after receiving the start model of the parallel operation control cabinet;
the system comprises a diesel generating set A, a parallel machine switch cabinet, a parallel machine main control cabinet, a parallel machine switch, a master control cabinet and a switch-on/off switch of the parallel machine bus cabinet, wherein the parallel machine switch cabinet is controlled by a machine side control cabinet to start, stop and protect, the parallel machine switch cabinet detects the voltage of the parallel machine bus to make a synchronous judgment, the parallel machine switch cabinet controls the switch-on/off switch of the parallel machine switch cabinet by the parallel machine switch cabinet in a hard wiring mode after the synchronous judgment is finished, and the parallel machine switch cabinet controls the switch-on/off switch cabinet of the parallel machine bus according to the condition of external input.
The diesel generator set A and the diesel generator set B are respectively two diesel generator sets of different brands.
The control monitoring module is used for remotely monitoring the control of the diesel generator and comprises a collecting unit, an analyzing unit, a judging unit, an alarming unit, a client and a sending unit;
the system comprises a collecting unit, an analyzing unit, a judging unit, a control unit and a control unit, wherein the collecting unit is used for collecting operation control information of a grid-connected main control cabinet, a grid-connected control cabinet, a machine side control cabinet, a diesel generator set A, a diesel generator set B and a switching-on/off brake and transmitting the operation control information to the analyzing unit;
the judgment unit is used for performing difference change judgment on the time consumption difference, the range difference and the interval difference, and specifically comprises the following steps: setting preset values corresponding to the time consumption difference value, the range difference value and the interval difference value, judging the preset values with the time consumption difference value, the range difference value and the interval difference value, generating an overlarge difference signal when the time consumption difference value, the range difference value and the interval difference value are larger than the corresponding preset values, generating a normal signal when the time consumption difference value, the range difference value and the interval difference value belong to the corresponding preset values, generating an undersize difference signal when the time consumption difference value, the range difference value and the interval difference value are smaller than the corresponding preset values, and transmitting the generated signal to an alarm unit;
the alarm unit is used for converting the over-difference signal, the normal signal and the over-difference signal into an over-difference alarm, a normal alarm and an over-difference alarm, and sending the over-difference alarm, the normal alarm and the over-difference alarm to the client through the sending unit.
The specific analysis process of data analysis is as follows:
the method comprises the following steps: classifying and marking the related data according to the operation control information, which specifically comprises the following steps:
acquiring operation control information, calibrating the types of diesel generator sets A and B in the operation control information into generator set model data, carrying out acquisition marking according to the model data of the generator sets, calibrating the time consumed by synchronous judgment of the diesel generator sets corresponding to the same generator model data in the operation control information as judgment time consumption data, calibrating the data size of a judgment value corresponding to the same generator model data in the operation control information as a judgment value range, and calibrating the time interval adopting the synchronous judgment corresponding to the same generator model data in the operation control information as interval time data;
step two: and D, performing classification calculation on the calibration values according to the calibration values in the step I, specifically:
summing the time-consuming data corresponding to the same generator set model data, and dividing the sum of the time-consuming data by the times to obtain the average value of the time-consuming data, and calibrating the average value as the time-consuming average value;
summing the data of each judgment numerical range corresponding to the same generator set model data, dividing the sum of the judgment numerical ranges by the times to obtain a mean value of the judgment numerical ranges, and calibrating the mean value as a range mean value;
calculating the mean value of the interval time data according to the same calculation mode, and calibrating the mean value as an interval mean value;
step three: calculating a variation difference value according to the time-consuming average value, the range average value and the interval average value calculated in the step two, specifically:
and establishing a rectangular coordinate system, marking the time-consuming average value, the range average value and the interval average value in each time in the rectangular coordinate system, calculating the difference value of the Y axis of the calculated average value after each time of statistics, marking the difference value as a time-consuming difference value, a range difference value and an interval difference value respectively, and transmitting the time-consuming difference value, the range difference value and the interval difference value to a judging unit.
When the parallel operation control cabinet works, a main controller in the parallel network main control cabinet receives a mains supply fault, a controller in the parallel operation control cabinet is instructed to send a signal for starting the diesel generator set in a communication mode, and the controller on the machine side controls the diesel generator set A and the diesel generator set B to be started after receiving the start model of the parallel operation control cabinet; the system comprises a diesel generating set A, a parallel machine switch cabinet, a parallel machine main control cabinet, a parallel machine switch, a master control cabinet and a switch-on/off switch of the parallel machine bus cabinet, wherein the parallel machine switch cabinet is controlled by a machine side control cabinet to start, stop and protect, the parallel machine switch cabinet detects the voltage of the parallel machine bus to make a synchronous judgment, the parallel machine switch cabinet controls the switch-on/off switch of the parallel machine switch cabinet by the parallel machine switch cabinet in a hard wiring mode after the synchronous judgment is finished, and the parallel machine switch cabinet controls the switch-on/off switch cabinet of the parallel machine bus according to the condition of external input.
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 (2)
1. The parallel operation and parallel operation control system of the diesel generator set is characterized by comprising a parallel operation main control cabinet, a parallel operation control cabinet, a machine side control cabinet, a diesel generator set A, a diesel generator set B, a switching on/off brake and a control monitoring module;
the main controller in the grid-connected main control cabinet receives the mains supply fault, commands the controller in the parallel operation control cabinet to send a signal for starting the diesel generator set in a communication mode, and controls the diesel generator set A and the diesel generator set B to start after the controller of the control cabinet beside the machine receives the start signal of the parallel operation control cabinet;
the system comprises a diesel generator set A, a parallel machine control cabinet, a parallel machine switch cabinet, a parallel machine master control cabinet and a parallel machine bus, wherein the diesel generator set A is controlled by the machine side control cabinet to start, stop and protect, the parallel machine control cabinet detects the voltage of the parallel machine bus to perform synchronous judgment, the parallel machine switch cabinet controls the parallel machine switch cabinet to switch on after the synchronous judgment is completed, the parallel machine switch cabinet feeds back the switch-on state of the parallel machine switch to the parallel machine control cabinet in a hard wiring mode and then feeds back the switch-on state to the parallel machine master control cabinet in a communication mode, and the parallel machine master control cabinet controls the switch-on and switch-off of a wire outlet switch cabinet of the parallel machine bus according to an externally input condition;
the control monitoring module is used for remotely monitoring the control of the diesel generator and comprises a collecting unit, an analyzing unit, a judging unit, an alarming unit, a client and a sending unit;
the system comprises a collecting unit, an analyzing unit, a judging unit and a judging unit, wherein the collecting unit is used for collecting operation control information of a grid-connected main control cabinet, a grid-connected control cabinet, a machine side control cabinet, a diesel generator set A, a diesel generator set B and a switching-on/switching-off switch and transmitting the operation control information to the analyzing unit;
the specific analysis process of data analysis is as follows:
the method comprises the following steps: classifying and marking the related data according to the operation control information, which specifically comprises the following steps:
acquiring operation control information, calibrating the types of diesel generator sets A and B in the operation control information as generator set model data, carrying out acquisition marking according to the model data of the generator sets, calibrating the time consumed by synchronous judgment of the diesel generator sets corresponding to the same generator model data in the operation control information as judgment time consumption data, calibrating the data size of a judgment value corresponding to the same generator model data in the operation control information as a judgment value range, and calibrating the time interval adopting the synchronous judgment corresponding to the same generator model data in the operation control information as interval time data;
step two: and D, performing classification calculation on the calibration values according to the calibration values in the step I, specifically:
summing the time-consuming data corresponding to the same generator set model data, and dividing the sum of the time-consuming data by the times to obtain the average value of the time-consuming data, and calibrating the average value as the time-consuming average value;
summing the data of each judgment numerical range corresponding to the same generator set model data, dividing the sum of the judgment numerical ranges by the times to obtain a mean value of the judgment numerical ranges, and calibrating the mean value as a range mean value;
calculating the mean value of the interval time data according to the same calculation mode, and calibrating the mean value as an interval mean value;
step three: calculating a variation difference value according to the time-consuming average value, the range average value and the interval average value calculated in the step two, specifically:
establishing a rectangular coordinate system, marking the time-consuming average value, the range average value and the interval average value in each time in the rectangular coordinate system, performing Y-axis difference calculation on the calculated average value after each time of statistics, marking the difference values as a time-consuming difference value, a range difference value and an interval difference value respectively, and transmitting the time-consuming difference value, the range difference value and the interval difference value to a judging unit;
the determination unit is configured to perform difference change determination on the time consumption difference, the range difference, and the interval difference, and specifically includes: setting preset values corresponding to the time consumption difference value, the range difference value and the interval difference value, judging the preset values with the time consumption difference value, the range difference value and the interval difference value, generating an overlarge difference signal when the time consumption difference value, the range difference value and the interval difference value are larger than the corresponding preset values, generating a normal signal when the time consumption difference value, the range difference value and the interval difference value belong to the corresponding preset values, generating an undersize difference signal when the time consumption difference value, the range difference value and the interval difference value are smaller than the corresponding preset values, and transmitting the generated signal to an alarm unit;
the alarm unit is used for converting the over-difference signal, the normal signal and the over-difference signal into an over-difference alarm, a normal alarm and an over-difference alarm, and sending the over-difference alarm, the normal alarm and the over-difference alarm to the client through the sending unit.
2. The diesel generator set parallel-operation and parallel-connection control system as claimed in claim 1, wherein the diesel generator set A and the diesel generator set B are two diesel generator sets of different brands respectively.
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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 |
CN114326471A (en) * | 2021-11-26 | 2022-04-12 | 潍柴动力股份有限公司 | Redundant parallel operation control method and device, computer equipment and storage medium |
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