CN106936363B - Energy efficiency control device and energy efficiency control method - Google Patents
Energy efficiency control device and energy efficiency control method Download PDFInfo
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- CN106936363B CN106936363B CN201710206912.8A CN201710206912A CN106936363B CN 106936363 B CN106936363 B CN 106936363B CN 201710206912 A CN201710206912 A CN 201710206912A CN 106936363 B CN106936363 B CN 106936363B
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- 238000005265 energy consumption Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 29
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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Abstract
The invention discloses an energy efficiency control device and an energy efficiency control method, which are connected with electromechanical equipment to control the energy consumption of the electromechanical equipment, and comprise a controller, a power system, a first contactor, a second contactor and a frequency converter; the controller is connected with the power system, the power system is connected with the frequency converter through the first contactor, the power system is connected with the electromechanical device through the second contactor, the frequency converter is also connected with the electromechanical device, and the frequency converter changes the frequency of alternating current output by the power system and outputs the alternating current to the electromechanical device. The invention has the advantages and beneficial effects that: the operation safety of the electromechanical equipment is guaranteed by ensuring that the electromechanical equipment operates in a normal load interval, the energy efficiency utilization rate of the electromechanical equipment is improved, and the operation cost of the electromechanical equipment is saved.
Description
Technical Field
The invention relates to the field of electromechanics, in particular to an energy efficiency control device and an energy efficiency control method.
Background
For the operation energy efficiency of most electromechanical equipment in a building, the motor is in a light load state in practice due to the large design and selection, the working efficiency is very low, and the energy is wasted greatly; if the electromechanical equipment in the building needs to run for a long time under full load, the temperature of the electromechanical equipment is easily and rapidly increased, and damage is caused; in addition, the intelligent instrument of the electric cabinet of the existing electromechanical equipment can measure the running current, voltage and electric energy parameters, but can not analyze and evaluate the running efficiency of the equipment and correspondingly control the running efficiency of the equipment, so that the electromechanical equipment can not be ensured to run in a normal load interval for a long time.
Disclosure of Invention
In order to solve the above problems, the present invention provides an energy efficiency control apparatus and an energy efficiency control method. According to the technical scheme, the frequency of alternating current output by the electric power system to the electromechanical equipment is changed by utilizing the controller and the frequency converter, so that the energy efficiency control of the electric power system is realized;
The controller samples the current or voltage obtained by the electromechanical device through the frequency converter, senses the temperature of the electromechanical device through the temperature sensor, judges whether the state of the electromechanical device is a light load state, a normal state or an overload state through combining the current or voltage of the electromechanical device and the temperature of the electromechanical device, and forms a judging result; the controller controls the electromechanical device according to the judging result, ensures that the electromechanical device operates in a normal load interval, ensures the operation safety of the electromechanical device, improves the energy efficiency utilization rate of the electromechanical device, and saves the operation cost of the electromechanical device.
The invention relates to an energy efficiency control device which is connected with electromechanical equipment to control the energy consumption of the electromechanical equipment, and is characterized by comprising a controller, a power system, a first contactor, a second contactor and a frequency converter; the controller is connected with the power system, the power system is connected with the frequency converter through the first contactor, the power system is connected with the electromechanical device through the second contactor, the frequency converter is also connected with the electromechanical device, and the frequency converter changes the frequency of alternating current output by the power system and outputs the alternating current to the electromechanical device.
In the above scheme, the frequency converter is further connected with the controller, and is configured to sample a voltage or a current output by the frequency converter to the electromechanical device, and output a voltage value or a current value obtained by the electromechanical device to the controller;
the energy efficiency control device further comprises a temperature sensor which is respectively connected with the electromechanical equipment and the controller and is used for sensing the temperature of the electromechanical equipment and transmitting the temperature value of the electromechanical equipment to the controller;
the controller controls the voltage or current of the electromechanical device to output a frequency value to the frequency converter according to the voltage value or the current value and the temperature value, and the frequency converter changes the frequency of alternating current output to the electromechanical device according to the frequency value.
In the scheme, the controller comprises 1 to 79 pins, wherein the pin 39 and pin 40 of the controller are respectively connected with the frequency converter and are used for outputting variable frequency to the frequency converter so as to adjust the frequency value of the frequency converter; the 59 pin and the 60 pin of the controller are connected with input equipment and are used for controlling the starting of the frequency converter; the pins 63 and 64 of the controller are respectively connected with the frequency converter and used for monitoring the running state of the frequency converter; and a pin 67 and a pin 68 of the controller are respectively connected with the frequency converter and are used for judging whether the frequency converter is overloaded.
In the scheme, the frequency converter is provided with a frequency conversion feedback pin A0, a frequency conversion feedback pin COM, a frequency conversion adjustment pin A12, a frequency conversion adjustment pin COM, a starting L1 pin, a starting positive voltage pin, a fault 1A pin, a fault 1C pin, a running 2A pin and a running 2C pin;
the frequency conversion regulation A12 pin is connected with the 40 pin of the controller, the frequency conversion regulation COM pin is connected with the 39 pin of the controller, and the controller outputs a frequency value to the frequency converter through the frequency conversion regulation A12 pin; the starting L1 pin is connected with a 59 pin of the controller, and the starting positive voltage pin is connected with a 60 pin of the controller; the fault 1A pin is connected with the 67 pin of the controller, the fault 1C pin is connected with the 68 pin of the controller, and the frequency converter transmits the voltage value or the current value of the electromechanical device to the controller through the fault 1A pin or the fault 1C pin; and the running 2A pin is connected with the 63 pin of the controller, and the running 2C pin is connected with the 64 pin of the controller.
In the above scheme, the power system comprises a live wire and a zero wire, wherein the 1-pin of the controller is connected with a remote control system, the remote control system is used for remotely controlling the controller, and the 2-pin of the controller is grounded; the 23 pins of the controller are connected with the live wire, the 24 pins of the controller are sequentially connected with the working state indicator lamp ZD and the zero line, the 25 pins of the controller are connected with the live wire, and the 26 pins of the controller are sequentially connected with the fault indicator lamp GD and the zero line;
The 27 feet and the 28 feet of the controller are respectively connected with the output equipment, and the 29 feet and the 30 feet of the controller are respectively connected with the output equipment; the L foot of controller with the live wire is connected, the live wire passes through the L foot is for the controller provides the electric energy, the N foot of controller with the zero line is connected, the G foot of controller ground connection.
In the above scheme, the pin 43 and the pin 44 of the controller are respectively connected with an input device, the input device inputs a frequency signal to the controller through the pin 43 and the pin 44, and the pin 40 of the controller transmits the frequency value to the frequency converter;
The 55 pin and the 56 pin of the controller are respectively connected with the temperature sensor, and the temperature sensor transmits the temperature value of the electromechanical device to the controller through the 55 pin and the 56 pin;
The pin 61 of the controller is connected with a live wire of the power system, the pin 62 of the controller is sequentially connected with an electrified coil of the first contactor and a zero line of the power system, and the pin 65 and the pin 66 of the controller are respectively connected with a starting button JC of the first contactor;
The 69 feet and the 70 feet of the controller are respectively connected with an overload protector BH, and the overload protector BH is also connected with the electromechanical equipment; the foot 71 and the foot 72 of the controller are respectively connected with the variable frequency automatic switch ZK, the foot 73 and the foot 74 of the controller are respectively connected with the variable frequency manual switch SK, the foot 75 and the foot 76 of the controller are respectively connected with the equipment stop button TZ, and the foot 77 and the foot 78 of the controller are respectively connected with the equipment start button QD.
In the scheme, the 7 pin and the 8 pin of the controller are respectively connected with the butterfly valve opening button KA, and the 8 pin and the 9 pin of the controller are respectively connected with the butterfly valve closing button GA; the 79 pin of the controller is connected with a butterfly valve and is used for outputting a closing signal to the butterfly valve, the 57 pin of the controller is connected with the butterfly valve and is used for outputting an opening signal to the butterfly valve, and the 58 pin of the controller is grounded;
The 3-pin of the controller is connected with the butterfly valve to receive an opening in-place signal output by the butterfly valve, the 4-pin of the controller is grounded, the 5-pin of the controller is connected with the butterfly valve to receive a closing in-place signal output by the butterfly valve, and the 6-pin of the controller is grounded; and a 32 foot of the controller is connected with a butterfly valve indicator lamp DD.
An energy efficiency control method comprises a fixed frequency mode and a variable frequency mode,
The fixed frequency mode comprises the following steps:
D1. closing the second contactor and opening the first contactor to enable the power system to directly provide alternating current to the electromechanical device;
D2. the electromechanical device directly operates alternating current supplied by the power system;
The frequency conversion mode comprises the following steps:
S1, disconnecting a second contactor, operating a variable frequency manual switch SK or a variable frequency automatic switch ZK to start a controller, and operating a start button JC of a first contactor to enable the controller to electrify an electrifying coil of the first contactor so as to enable the first contactor to be closed;
S2, the controller obtains the temperature value of the electromechanical equipment through temperature sensors connected with a 55 pin and a 56 pin;
s3, sampling received voltage or current of the electromechanical equipment by the frequency converter, and transmitting the voltage value or current value of the electromechanical equipment to the controller through a fault 1A pin or a fault 1C pin of the frequency converter;
S4, the controller calculates the current power of the electromechanical equipment through the voltage value or the current value;
S5, rated power of the electromechanical equipment is set in the controller, and the controller calculates and obtains the load rate of the electromechanical equipment according to the current power and the rated power;
S6, a normal load interval is set in the controller, and the upper limit value or the lower limit value of the normal load interval can be freely set according to requirements; the controller judges whether the load rate of the electromechanical equipment is in the normal load interval or not, and forms a judging result, and the controller controls the frequency converter or the output equipment according to the judging result.
In the above scheme, the step S6 further includes the following steps:
s61, if the load rate is in the normal load interval, the controller judges that the electromechanical equipment is in a normal state; the 24 feet of the controller output current to the working state indicator lamp ZD so that the working state indicator lamp ZD is turned on; the 27 feet and the 28 feet of the controller output normal signals to the output equipment;
S62, if the load rate of the electromechanical device is smaller than the lower limit value of the normal load interval, the controller judges that the electromechanical device is in a light load state; the 29 feet and the 30 feet of the controller output light-load alarm signals to the output equipment, and workers can replace electromechanical equipment with smaller rated power according to the light-load alarm signals;
S63, an alarm temperature is also set in the controller; if the load rate of the electromechanical device is greater than the upper limit value of the normal load interval, the controller measures the temperature value of the electromechanical device through a temperature sensor again, and if the temperature value is higher than the alarm temperature, the controller judges that the electromechanical device is in an overload state;
The 26 pins of the controller output current to the fault indicator lamp GD to enable the fault indicator lamp GD to be lightened, and the 29 pins and the 30 pins of the controller output overload alarm signals to the output equipment;
The staff operates the input device to input a frequency value to the controller, and the controller transmits the frequency value to the frequency converter through a 40 of the controller and a frequency conversion regulation A12 pin of the frequency converter; the frequency converter changes the frequency of alternating current output to the electromechanical equipment according to the frequency value so as to change the current power of the electromechanical equipment and restore the current power of the electromechanical equipment to be in the normal load interval;
the controller compares the temperature value of the electromechanical device with the alarm temperature using a PID algorithm.
In the above scheme, in the step S6, the controller compares the load rate of the electromechanical device with a normal load interval by using a PID algorithm; the lower limit value of the normal load interval is 80%, and the upper limit value of the normal load interval is 95%.
The invention has the advantages and beneficial effects that: the invention provides an energy efficiency control device and an energy efficiency control method, which ensure that electromechanical equipment operates in a normal load interval, further ensure the operation safety of the electromechanical equipment, improve the energy efficiency utilization rate of the electromechanical equipment and save the operation cost of the electromechanical equipment.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a circuit diagram of an energy efficiency control device according to the present invention.
In the figure: 1. controller 2, power system 3, first contactor 4, second contactor 5, frequency converter 6, electromechanical device 7, temperature sensor 8, input device 9, output device 10, remote control system 31, energized coil
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, the present invention is an energy efficiency control device connected to an electromechanical device 6 to control energy consumption of the electromechanical device 6, and includes a controller 1, an electric power system 2, a first contactor 3, a second contactor 4, and a frequency converter 5; the controller 1 is connected with the power system 2, the power system 2 is connected with the frequency converter 5 through the first contactor 3, the power system 2 is connected with the electromechanical device 6 through the second contactor 4, the frequency converter 5 is also connected with the electromechanical device 6, and the frequency converter 5 changes the frequency of alternating current output by the power system 2 and outputs the alternating current to the electromechanical device 6.
Preferably, the frequency converter 5 is further connected to the controller 1, and is configured to sample a voltage or a current output by the frequency converter 5 to the electromechanical device 6, and output a voltage value or a current value obtained by the electromechanical device 6 to the controller 1;
The energy efficiency control device further comprises a temperature sensor 7, wherein the temperature sensor 7 is respectively connected with the electromechanical device 6 and the controller 1, and is used for sensing the temperature of the electromechanical device 6 and transmitting the temperature value of the electromechanical device 6 to the controller 1;
The controller 1 controls the magnitude of the voltage or current of the electromechanical device 6 to output a frequency value to the frequency converter 5 according to the voltage or current value, and the temperature value, and the frequency converter 5 changes the frequency of the alternating current output to the electromechanical device 6 according to the frequency value.
Further, the controller 1 comprises 1-79 pins, and the 39 pins and the 40 pins of the controller 1 are respectively connected with the frequency converter 5 and used for outputting the frequency conversion frequency to the frequency converter 5 so as to adjust the frequency value of the frequency converter 5; the 59 pin and the 60 pin of the controller 1 are connected with the input device 8 and are used for controlling the starting of the frequency converter 5; the pins 63 and 64 of the controller 1 are respectively connected with the frequency converter 5 and are used for monitoring the running state of the frequency converter 5; pins 67 and 68 of the controller 1 are respectively connected with the frequency converter 5 for judging whether the frequency converter 5 is overloaded.
Specifically, the frequency converter 5 has a frequency conversion feedback pin A0, a frequency conversion feedback pin COM, a frequency conversion adjustment pin a12, a frequency conversion adjustment pin COM, a start L1 pin, a start positive voltage pin, a fault 1A pin, a fault 1C pin, a running 2A pin and a running 2C pin;
The frequency conversion regulation A12 pin is connected with the 40 pin of the controller 1, the frequency conversion regulation COM pin is connected with the 39 pin of the controller 1, and the controller 1 outputs a frequency value to the frequency converter 5 through the frequency conversion regulation A12 pin; the L1 foot is connected with the 59 foot of the controller 1, and the positive voltage foot is connected with the 60 foot of the controller 1; the fault 1A pin is connected with the 67 pin of the controller 1, the fault 1C pin is connected with the 68 pin of the controller 1, and the frequency converter 5 transmits the voltage value or the current value of the electromechanical device 6 to the controller 1 through the fault 1A pin or the fault 1C pin; the running 2A pin is connected with the 63 pin of the controller 1, and the running 2C pin is connected with the 64 pin of the controller 1.
Preferably, the power system 2 comprises a live wire and a zero wire, the 1 pin of the controller 1 is connected with the remote control system 10, the remote control system 10 is used for remotely controlling the controller 1, and the 2 pin of the controller 1 is grounded; the 23 pin of the controller 1 is connected with the live wire, the 24 pin of the controller 1 is sequentially connected with the working state indicator lamp ZD and the zero line, the 25 pin of the controller 1 is connected with the live wire, and the 26 pin of the controller 1 is sequentially connected with the fault indicator lamp GD and the zero line;
pins 27 and 28 of the controller 1 are connected with an output device 9 (not shown in the figure), and pins 29 and 30 of the controller 1 are connected with the output device 9; the L foot and the live wire of controller 1 are connected, and the live wire passes through L foot and provides the electric energy for controller 1, and the N foot and the zero line of controller 1 are connected, and the G foot ground connection of controller 1.
Preferably, pins 43 and 44 of the controller 1 are connected to the input device 8, respectively, the input device 8 inputs a frequency signal to the controller 1 through pins 43 and 44, and pin 40 of the controller 1 transmits the frequency value to the frequency converter 5;
the 55 pin and the 56 pin of the controller 1 are respectively connected with the temperature sensor 7, and the temperature sensor 7 transmits the temperature value of the electromechanical device 6 to the controller 1 through the 55 pin and the 56 pin;
The pin 61 of the controller 1 is connected with the live wire of the power system 2, the pin 62 of the controller 1 is sequentially connected with the power-on coil 31 of the first contactor 3 and the zero line of the power system 2, and the pin 65 and the pin 66 of the controller 1 are respectively connected with the starting button JC of the first contactor 3;
The 69 pin and the 70 pin of the controller 1 are respectively connected with an overload protector BH, and the overload protector BH is also connected with the electromechanical equipment 6; the pin 71 and the pin 72 of the controller 1 are respectively connected with a variable frequency automatic switch ZK, the pin 73 and the pin 74 of the controller 1 are respectively connected with a variable frequency manual switch SK, the pin 75 and the pin 76 of the controller 1 are respectively connected with a device stop button TZ, and the pin 77 and the pin 78 of the controller 1 are respectively connected with a device start button QD; the operator presses the equipment start button QD to start the controller 1, and the 60 pin of the controller 1 outputs voltage to the frequency converter 5 to start the frequency converter 5, so that the frequency converter 5 outputs alternating current to the electromechanical equipment 6; the operator stops the controller 1 by pressing the device stop button TZ, and further stops the operation of the inverter 5, and the inverter 5 stops outputting the ac power to the electromechanical device 6.
Preferably, the 7 pin and the 8 pin of the controller 1 are respectively connected with a butterfly valve opening button KA, and the 8 pin and the 9 pin of the controller 1 are respectively connected with a butterfly valve closing button GA; the 79 pin of the controller 1 is connected with a butterfly valve and used for outputting a closing signal to the butterfly valve, the 57 pin of the controller 1 is connected with the butterfly valve and used for outputting an opening signal to the butterfly valve, and the 58 pin of the controller 1 is grounded;
The 3 pin of the controller 1 is connected with the butterfly valve to receive an opening in-place signal output by the butterfly valve, the 4 pin of the controller 1 is grounded, the 5 pin of the controller 1 is connected with the butterfly valve to receive a closing in-place signal output by the butterfly valve, and the 6 pin of the controller 1 is grounded; the 32 feet of the controller 1 are connected with a butterfly valve indicator lamp DD; the working personnel presses a butterfly valve opening button KA, a 57 foot of the controller 1 outputs an opening signal to the butterfly valve, and after the butterfly valve is opened in place, a 3 foot of the controller 1 outputs a butterfly valve opening in-place signal to the controller 1, and a 32 foot of the controller 1 controls a butterfly valve indicator lamp DD to be lightened; the staff presses the butterfly valve and closes button GA, and 79 feet of controller 1 output to the butterfly valve closes the signal, and the butterfly valve closes the signal that targets in place through 5 feet of controller 1 to the output of controller 1 after target in place, and 32 feet of controller 1 control butterfly valve pilot lamp DD to go out.
An energy efficiency control method comprises a fixed frequency mode and a variable frequency mode,
The fixed frequency mode comprises the following steps:
D1. closing the second contactor 4 and opening the first contactor 3, causing the power system 2 to provide ac power directly to the electromechanical device 6;
D2. the electromechanical device 6 directly operates the alternating current supplied by the power system 2;
The frequency conversion mode comprises the following steps:
S1, the second contactor 4 is disconnected, the controller 1 is started by operating the variable frequency manual switch SK or the variable frequency automatic switch ZK, and the controller 1 is electrified by operating the starting button JC of the first contactor 3 to further close the first contactor 3;
S2, the controller 1 obtains a temperature value of the electromechanical device 6 through a temperature sensor 7 connected with a pin 55 and a pin 56;
S3, sampling the received voltage or current of the electromechanical device 6 by the frequency converter 5, and transmitting the voltage value or current value of the electromechanical device 6 to the controller 1 through a fault 1A pin or a fault 1C pin of the frequency converter 5;
S4, the controller 1 passes through the current power of the electromechanical equipment 6 through the voltage value or the current value;
s5, rated power of the electromechanical equipment 6 is set in the controller 1, and the controller 1 calculates and obtains the load rate of the electromechanical equipment 6 according to the current power and the rated power;
s6, a normal load interval is set in the controller 1, and the upper limit value or the lower limit value of the normal load interval can be freely set according to requirements; the controller 1 judges whether the load factor of the electromechanical device 6 is within the normal load interval, and forms a judgment result, and the controller 1 controls the frequency converter 5 or the output device 9 according to the judgment result.
Specifically, the step S6 further includes the following steps:
s61, if the load rate is in a normal load interval, the controller 1 judges that the electromechanical equipment 6 is in a normal state; the 24 feet of the controller 1 output current to the working state indicator lamp ZD so that the working state indicator lamp ZD is lightened; pins 27 and 28 of the controller 1 output normal signals to the output device 9;
S62, if the load rate of the electromechanical device 6 is smaller than the lower limit value of the normal load interval, the controller 1 judges that the electromechanical device 6 is in a light load state; the 29 feet and the 30 feet of the controller 1 output light-load alarm signals to the output equipment 9, and workers can replace the electromechanical equipment 6 with smaller rated power according to the light-load alarm signals;
s63, an alarm temperature is also set in the controller 1; if the load rate of the electromechanical device 6 is greater than the upper limit value of the normal load interval, the controller 1 will determine the temperature value of the electromechanical device 6 through the temperature sensor 7 again, and if the temperature value is higher than the alarm temperature, the controller 1 determines that the electromechanical device 6 is in an overload state;
The pin 26 of the controller 1 outputs current to the fault indicator lamp GD to cause the fault indicator lamp GD to light up, and outputs an overload alarm signal to the output device 9 through the pins 29 and 30 of the controller 1;
The operator operates the input device 8 to input a frequency value to the controller 1, and the controller 1 transmits the frequency value to the frequency converter 5 through the 40 of the controller 1 and the frequency conversion regulation A12 pin of the frequency converter 5; the frequency converter 5 changes the frequency of the alternating current output to the electromechanical device 6 according to the frequency value so as to change the current power of the electromechanical device 6 and restore the current power of the electromechanical device 6 to be in a normal load interval;
The controller 1 compares the temperature value of the electromechanical device 6 with the alarm temperature using a PID algorithm.
Preferably, in S63, an overload time limit is further set in the controller 1, when the controller 1 determines that the electromechanical device 6 is in an overload state, the operator fails to operate the input device 8 to input a frequency value to the controller 1 within the overload time limit, the controller 1 will start the overload protector BH, stop the controller 1, further stop the operation of the frequency converter 5, and the frequency converter 5 will stop outputting alternating current to the electromechanical device 6 to protect the safety of the electromechanical device 6.
Preferably, in S6, the controller 1 compares the load rate of the electromechanical device 6 with the normal load interval using a PID algorithm; the lower limit value of the normal load section is 80%, and the upper limit value of the normal load section is 95%.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. An energy efficiency control method is characterized by comprising a fixed frequency mode and a variable frequency mode,
The fixed frequency mode comprises the following steps:
d1 Closing the second contactor and opening the first contactor to enable the power system to directly provide alternating current to the electromechanical device;
D2 The electromechanical device directly operates the alternating current provided by the power system;
The frequency conversion mode comprises the following steps:
S1, disconnecting a second contactor, operating a variable frequency manual switch SK or a variable frequency automatic switch ZK to start a controller, and operating a start button JC of a first contactor to enable the controller to electrify an electrifying coil of the first contactor so as to enable the first contactor to be closed;
S2, the controller obtains the temperature value of the electromechanical equipment through temperature sensors connected with a 55 pin and a 56 pin;
s3, sampling received voltage or current of the electromechanical equipment by the frequency converter, and transmitting the voltage value or current value of the electromechanical equipment to the controller through a fault 1A pin or a fault 1C pin of the frequency converter;
S4, the controller calculates the current power of the electromechanical equipment through the voltage value or the current value;
S5, rated power of the electromechanical equipment is set in the controller, and the controller calculates and obtains the load rate of the electromechanical equipment according to the current power and the rated power;
S6, a normal load interval is set in the controller, and the upper limit value or the lower limit value of the normal load interval is freely set according to requirements; the controller judges whether the load rate of the electromechanical equipment is in the normal load interval or not, and forms a judging result, and the controller controls the frequency converter or the output equipment according to the judging result;
The step S6 further comprises the following steps:
s61, if the load rate is in the normal load interval, the controller judges that the electromechanical equipment is in a normal state; the 24 feet of the controller output current to the working state indicator lamp ZD so that the working state indicator lamp ZD is turned on; the 27 feet and the 28 feet of the controller output normal signals to the output equipment;
S62, if the load rate of the electromechanical device is smaller than the lower limit value of the normal load interval, the controller judges that the electromechanical device is in a light load state; the 29 feet and the 30 feet of the controller output light-load alarm signals to the output equipment, and workers replace electromechanical equipment with smaller rated power according to the light-load alarm signals;
S63, an alarm temperature is also set in the controller; if the load rate of the electromechanical device is greater than the upper limit value of the normal load interval, the controller measures the temperature value of the electromechanical device through a temperature sensor again, and if the temperature value is higher than the alarm temperature, the controller judges that the electromechanical device is in an overload state;
The 26 pins of the controller output current to the fault indicator lamp GD to enable the fault indicator lamp GD to be lightened, and the 29 pins and the 30 pins of the controller output overload alarm signals to the output equipment;
The staff operates the input device to input a frequency value to the controller, and the controller transmits the frequency value to the frequency converter through a 40 of the controller and a frequency conversion regulation A12 pin of the frequency converter; the frequency converter changes the frequency of alternating current output to the electromechanical equipment according to the frequency value so as to change the current power of the electromechanical equipment and restore the current power of the electromechanical equipment to be in the normal load interval;
the controller compares the temperature value of the electromechanical device with the alarm temperature using a PID algorithm.
2. The energy efficiency control method according to claim 1, wherein in S6, the controller compares the load rate of the electromechanical device with a normal load interval using a PID algorithm; the lower limit value of the normal load interval is 80%, and the upper limit value of the normal load interval is 95%.
3. An energy efficiency control device connected with an electromechanical device to control energy consumption of the electromechanical device, wherein the energy efficiency control device is operated with the energy efficiency control method according to claim 1 or 2, and the energy efficiency control device comprises a controller, a power system, a first contactor, a second contactor and a frequency converter; the controller is connected with the power system, the power system is connected with the frequency converter through the first contactor, the power system is connected with the electromechanical device through the second contactor, the frequency converter is also connected with the electromechanical device, and the frequency converter changes the frequency of alternating current output by the power system and outputs the alternating current to the electromechanical device.
4. An energy efficiency control apparatus according to claim 3, wherein the frequency converter is further connected to the controller, and is configured to sample a voltage or a current output from the frequency converter to the electromechanical device, and output a voltage value or a current value obtained by the electromechanical device to the controller;
the energy efficiency control device further comprises a temperature sensor which is respectively connected with the electromechanical equipment and the controller and is used for sensing the temperature of the electromechanical equipment and transmitting the temperature value of the electromechanical equipment to the controller;
the controller controls the voltage or current of the electromechanical device to output a frequency value to the frequency converter according to the voltage value or the current value and the temperature value, and the frequency converter changes the frequency of alternating current output to the electromechanical device according to the frequency value.
5. The energy efficiency control apparatus of claim 4, wherein the controller comprises 1-79 pins, and pins 39 and 40 of the controller are respectively connected with a frequency converter, and are used for outputting a frequency conversion frequency to the frequency converter so as to adjust the frequency value of the frequency converter; the 59 pin and the 60 pin of the controller are connected with input equipment and are used for controlling the starting of the frequency converter; the pins 63 and 64 of the controller are respectively connected with the frequency converter and used for monitoring the running state of the frequency converter; and a pin 67 and a pin 68 of the controller are respectively connected with the frequency converter and are used for judging whether the frequency converter is overloaded.
6. The energy efficiency control apparatus of claim 5 wherein the frequency converter has a frequency conversion feedback pin A0, a frequency conversion feedback pin COM, a frequency conversion adjustment pin a12, a frequency conversion adjustment pin COM, a start L1, a start positive voltage pin, a fault 1A pin, a fault 1C pin, a run 2A pin, and a run 2C pin;
the frequency conversion regulation A12 pin is connected with the 40 pin of the controller, the frequency conversion regulation COM pin is connected with the 39 pin of the controller, and the controller outputs a frequency value to the frequency converter through the frequency conversion regulation A12 pin; the starting L1 pin is connected with a 59 pin of the controller, and the starting positive voltage pin is connected with a 60 pin of the controller; the fault 1A pin is connected with the 67 pin of the controller, the fault 1C pin is connected with the 68 pin of the controller, and the frequency converter transmits the voltage value or the current value of the electromechanical device to the controller through the fault 1A pin or the fault 1C pin; and the running 2A pin is connected with the 63 pin of the controller, and the running 2C pin is connected with the 64 pin of the controller.
7. The energy efficiency control apparatus of claim 4 wherein the power system comprises a hot line and a neutral line, the controller having a 1-pin connected to a remote control system, the remote control system being configured to remotely control the controller, the controller having a 2-pin connected to ground; the 23 pins of the controller are connected with the live wire, the 24 pins of the controller are sequentially connected with the working state indicator lamp ZD and the zero line, the 25 pins of the controller are connected with the live wire, and the 26 pins of the controller are sequentially connected with the fault indicator lamp GD and the zero line;
The 27 feet and the 28 feet of the controller are respectively connected with the output equipment, and the 29 feet and the 30 feet of the controller are respectively connected with the output equipment; the L foot of controller with the live wire is connected, the live wire passes through the L foot is for the controller provides the electric energy, the N foot of controller with the zero line is connected, the G foot of controller ground connection.
8. The energy efficiency control apparatus of claim 4 wherein pins 43 and 44 of the controller are connected to input devices, respectively, the input devices input frequency signals to the controller via pins 43 and 44, pin 40 of the controller transmitting the frequency values to the frequency converter;
The 55 pin and the 56 pin of the controller are respectively connected with the temperature sensor, and the temperature sensor transmits the temperature value of the electromechanical device to the controller through the 55 pin and the 56 pin;
The pin 61 of the controller is connected with a live wire of the power system, the pin 62 of the controller is sequentially connected with an electrified coil of the first contactor and a zero line of the power system, and the pin 65 and the pin 66 of the controller are respectively connected with a starting button JC of the first contactor;
The 69 feet and the 70 feet of the controller are respectively connected with an overload protector BH, and the overload protector BH is also connected with the electromechanical equipment; the foot 71 and the foot 72 of the controller are respectively connected with the variable frequency automatic switch ZK, the foot 73 and the foot 74 of the controller are respectively connected with the variable frequency manual switch SK, the foot 75 and the foot 76 of the controller are respectively connected with the equipment stop button TZ, and the foot 77 and the foot 78 of the controller are respectively connected with the equipment start button QD.
9. The energy efficiency control apparatus of claim 3, wherein the 7-pin and the 8-pin of the controller are respectively connected with a butterfly valve opening button KA, and the 8-pin and the 9-pin of the controller are respectively connected with a butterfly valve closing button GA; the 79 pin of the controller is connected with a butterfly valve and is used for outputting a closing signal to the butterfly valve, the 57 pin of the controller is connected with the butterfly valve and is used for outputting an opening signal to the butterfly valve, and the 58 pin of the controller is grounded;
The 3-pin of the controller is connected with the butterfly valve to receive an opening in-place signal output by the butterfly valve, the 4-pin of the controller is grounded, the 5-pin of the controller is connected with the butterfly valve to receive a closing in-place signal output by the butterfly valve, and the 6-pin of the controller is grounded; and a 32 foot of the controller is connected with a butterfly valve indicator lamp DD.
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