CN106532682B - Intelligent load detection distribution control device - Google Patents
Intelligent load detection distribution control device Download PDFInfo
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- CN106532682B CN106532682B CN201610719782.3A CN201610719782A CN106532682B CN 106532682 B CN106532682 B CN 106532682B CN 201610719782 A CN201610719782 A CN 201610719782A CN 106532682 B CN106532682 B CN 106532682B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides an intelligent load detection distribution control device, which comprises a shell and a load detection metering unit for detecting the load information of a transformer in a distribution substation, wherein the shell is provided with a plurality of load detection metering units; a programmable display control unit for receiving the signal detected by the load detection metering unit; the programmable display control unit comprises a singlechip and an LED display unit connected with the singlechip; a load distribution control unit that receives the programmable display control unit data; and an operation state display unit for displaying the operation state of the load distribution control unit. The invention automatically detects and judges signal polarity, calibrates, processes data, carries out self-adaptive operation, has high intelligent level, low technical requirement and convenient access.
Description
Technical Field
The invention relates to a load detection distribution control device, in particular to a load detection distribution control device which is widely applied to energy-saving operation of a plurality of distribution transformers of a power distribution station of an electricity utilization terminal of an industrial, agricultural, urban and rural residential community and the like.
Background
The distribution substation is an important component part of a power system, is an important link for directly supplying power to terminal users, and is widely applied to the terminal energy fields of industry, agriculture, urban and rural communities and the like. The statistics show that the electric energy loss of the national distribution transformer is about 1700 hundred million kilowatt-hours, which is equivalent to 1.7 times of annual generating capacity of the three gorges power station, and the electric energy loss is very serious. As an important measure for energy conservation and emission reduction, in recent years, china has also put out a plurality of policies to promote the application and industrial development of the high-efficiency distribution transformer. However, the whole energy efficiency level is still low in the aspect of energy-saving control of the distribution transformer, and the energy-saving potential is huge, so that the research on the energy-saving control method of the distribution substation transformer is safe, reliable, economical and applicable, and has important significance for comprehensively improving the running energy efficiency level of the distribution transformer in China, reducing the electric energy loss of the distribution transformer and promoting energy conservation and emission reduction and environmental protection.
At present, the existing transformer control of the distribution substation has the following defects:
1. the capacity of most distribution substation transformers is fixed, in actual operation, the electricity load on the demand side fluctuates in a large range, like community resident life electricity consumption, the electricity load is large in the early peak and late peak, workers walk on duty, and more than two thirds of the time of the whole day are in idle load and light load states; some industrial and mining enterprises with larger load change, namely when the power load is very small, the large-capacity distribution transformer is also electrified to operate all the time, so that a large maraca trolley and a light load or no load are caused, electric energy is wasted, and environmental protection is not facilitated.
2. Particularly, the residential area newly developed in real estate has long sales cycle, the residence time of the owners is not concentrated, the residence rate is low, the transformer is idle and light-loaded for a long time, the proportion of the consumed occupied electric quantity of the transformer is large, the average charge electricity price of the residential area property management is high, and the residential area property management is free of money or contradicts with the owners.
3. After the charge is managed by the power transfer power supply company, the contradiction transfer is only performed, the electric energy waste also increases the operation cost of the power supply company, and the economic benefit of the power supply company is affected.
4. Some distribution offices also require a transformer to realize the mutual supply of two mutually, but the control is controlled manually by an on-duty electrician according to the load size, so that the requirements of load change cannot be met, particularly important loads of high-rise buildings, emergency rescue and disaster relief events are caused, the transformer cannot be put into time according to the load requirements, accidents are enlarged, and larger losses are caused.
Disclosure of Invention
The invention aims to provide an intelligent load detection distribution control device widely applied to power-saving operation of a plurality of distribution transformers of a terminal distribution substation of an urban and rural power grid, so as to solve the problems that the capacity of the distribution transformers of the existing distribution substation is fixed, and when the power load is very light, the large-capacity distribution transformers are always electrified to operate, and the large-sized maraging trolley and the transformers have large electric energy loss, waste energy and are unfavorable for energy conservation and emission reduction.
The invention adopts the following technical scheme:
intelligent load detects distribution controlling means, including the shell, still include:
a load detection metering unit for detecting the load information of the transformer in the distribution substation;
a programmable display control unit for receiving the signal detected by the load detection metering unit; the programmable display control unit comprises a singlechip and an LED display unit connected with the singlechip;
a load distribution control unit that receives the programmable display control unit data;
and an operation state display unit for displaying the operation state of the load distribution control unit.
The load distribution control unit comprises a control circuit, the control circuit is sequentially connected with the running state display unit and the input terminal through the input photoelectric isolation module, and the control circuit is sequentially connected with the output terminal through the output photoelectric isolation module and the relay module.
And the singlechip of the programmable display control unit is connected with the LED display unit through the LED drive circuit.
The load detection metering unit comprises two processors, and each processor is connected with a transformer through a current signal isolator.
The invention adopting the technical scheme has the following characteristics:
1. the current detection conversion and intelligent programmable control technology and the high-precision AD measuring chip are applied to respectively collect the load currents of the transformers # 1 and # 2, automatically detect and judge the signal polarity, calibrate and process data, perform self-adaptive operation, have high intelligent level, low technical requirements and are convenient to access.
2. The constant value, the parameter, the setting and the modification can be carried out through the man-machine interaction interface and the field programming according to the power-saving operation requirement of the transformer, and the control scheme is flexible and convenient.
3. The invention has perfect functions and convenient installation and operation, is suitable for the power-saving operation of the distribution transformer of a newly-built distribution substation, is also suitable for the energy-saving transformation of the distribution substation with a large amount of operation, has huge power-saving potential and obvious economic and social benefits.
Drawings
Fig. 1 is a block diagram of an intelligent load detection and distribution control device.
Fig. 2 is a diagram of a distribution substation system.
Fig. 3 is an outline view of the intelligent load detection and distribution control device.
Fig. 4 is a control schematic diagram of the 1# high-voltage cabinet.
Fig. 5 is a control schematic diagram of the 2# high-voltage cabinet.
Fig. 6 is a control schematic diagram of the # 1 low-voltage cabinet.
Fig. 7 is a wiring diagram of intelligent power supply monitoring control arranged in the # 1 wire inlet cabinet.
Fig. 8 is a control schematic diagram of the # 2 low-voltage cabinet.
Fig. 9 is a wiring diagram of intelligent power supply monitoring control arranged in the 2# incoming line cabinet.
Fig. 10 is a control schematic of a low voltage tie cabinet circuit breaker.
Fig. 11 is a wiring diagram of an intelligent phase sequence monitor set in the low voltage contact cabinet.
Fig. 12 is a schematic diagram of an intelligent load detection and distribution control device.
Fig. 13 is a schematic diagram of a second intelligent load detection and distribution control device.
Fig. 14 is a detailed view of the portion of fig. 12A.
Fig. 15 is a detailed view of the portion of fig. 12B.
Fig. 16 is a detailed view of the portion of fig. 12C.
Fig. 17 is a detailed view of the portion of fig. 12D.
Fig. 18 is a detailed view of the portion of fig. 13A.
Fig. 19 is a detailed view of the portion of fig. 13B.
Fig. 20 is a detailed view of the portion of fig. 13C.
Fig. 21 is a detailed view of the portion of fig. 13D.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention provides an intelligent load detection distribution control device for controlling power-saving operation of a plurality of distribution transformers in a distribution substation.
Specifically, the invention is used for detecting a power-saving distribution substation, a plurality of distribution transformers in the distribution substation are grouped, every two distribution transformers are a group of distribution transformers, which are respectively defined as a No. 1 transformer and a No. 2 transformer, the two transformers can be of the same capacity or of any different capacities, the preferable capacity ratio is 1:2, and the power-saving effect is the best.
As shown in fig. 2, each distribution transformer group comprises a 1# high-voltage cabinet and a 2# high-voltage cabinet which are connected with a high-voltage bus; the 1# high-voltage cabinet is connected with a 1# transformer, the 1# transformer is connected with a 1# low-voltage cabinet through a second bus, the 1# low-voltage cabinet is connected with a low-voltage compensation cabinet I through the second bus, and the low-voltage compensation cabinet I is connected with a load I through the second bus; the 2# high-voltage cabinet is connected with a 2# transformer, the 2# transformer is connected with a 2# low-voltage cabinet through a third bus, the 2# low-voltage cabinet is connected with a low-voltage compensation cabinet II through a third bus, and the low-voltage compensation cabinet I is connected with a load II through a third bus; the No. 1 transformer is connected with the No. 2 transformer; the low-voltage contact cabinet is connected with a load I through a second bus and a load II through a third bus.
The intelligent load detection distribution control device automatically detects the load sizes and the high-low voltage switch states of the 1# transformer and the 2# transformer, controls the 1# high-voltage switch, the 2# high-voltage switch, the 1# low-voltage wire inlet breaker, the 2# low-voltage wire inlet breaker and the low-voltage contact breaker to be in uninterruptible power linkage switching combination between the two transformers, changes the running capacity of the transformers, avoids the large maraca and the small maraca, realizes unmanned on duty of a distribution substation, automatically stores energy, closes and opens a switch, and intelligently saves power for the distribution substation transformers.
As shown in fig. 1, the intelligent load distribution control device of the present invention includes a load detection metering unit that detects the states of a 1# transformer and a 2# transformer in a power distribution substation; the programmable display control unit is used for receiving the signals detected by the load detection metering unit and comprises a singlechip and an LED driving circuit connected with the singlechip, and the LED driving circuit is connected with the LED display unit; a load distribution control unit that receives the programmable display control unit data; and an operation state display unit for displaying the operation state of the load distribution control unit. Wherein the LED display unit and the running state display unit are both arranged on the shell. The remaining units are disposed within the housing. The load distribution control unit comprises a control circuit, the control circuit is sequentially connected with the running state display unit and the input terminal through the input photoelectric isolation module, the control circuit is sequentially connected with the output terminal through the output photoelectric isolation module and the relay module, and the input terminal and the output terminal are both connected with equipment in the distribution transformer set.
Fig. 3 is a diagram showing the outline of the load detection and distribution control device, on which an LED display unit, an operation state display unit, an input terminal, and an output terminal are provided.
As shown in fig. 12 and 13, the load detecting and metering unit collects the load currents in the 1# high-voltage cabinet and the 2# high-voltage cabinet, and then performs signal conversion by two processors (IC 1, IC 2). As shown in the figure, the processor 1C1 receives the signal of the # 1 transformer acquired by the load detection signal acquisition device through the current signal isolator T4, and the processor IC2 receives the signal of the # 2 transformer acquired by the load detection signal acquisition device through the current signal isolator T3. The processor (IC 1, IC 2) is two high-precision double-path DPS high-precision CA/AD digital-to-analog conversion processing chips, such as the existing chip with model CS5460, the CS5460DPS high-precision integrated circuit chip with serial interface comprises two converters and a bi-directional serial port for communication with the microcontroller, the bi-directional serial port comprises two gain programmable amplifiers and two high-speed filters, the system calibration and effective value calculation functions are provided for providing instantaneous data sampling and period calculation results, automatically detecting and judging signal polarity, program self-adaptive operation is carried out, and the serial port is connected with the IO port of the singlechip IC3 of the programmable display control unit.
The load detection metering unit collects the load current of the No. 1 high-voltage cabinet through two input terminals 104 and 105, then passes through a primary winding of a current signal isolator T4 IN FIG. 12, a secondary winding of the T4 is connected with a second resistor and a nineteenth capacitor IN parallel, and then is respectively connected with an IN+ and IIN-port of a processor 1C1, and collects the load current of the No. 2 high-voltage cabinet through two input terminals 204 and 205, and then passes through a primary winding of a current signal isolator T3 IN FIG. 12, and the secondary winding is connected with an IC2 IN+ and IIN-port after being connected with R1 and C18 IN parallel.
The programmable display control unit comprises a singlechip IC3, the singlechip IC3 is connected with an LED display circuit, the programmable display control unit also comprises a programmer, a signal modulation circuit, a serial port communication circuit and the like, and the singlechip IC3 mainly realizes the functions of data reading, calibration, control, signal, communication, constant value setting and modification of man-machine interaction interfaces of the whole system and the like.
As shown in fig. 12, 14, 15, 16 and 17, the single-chip microcomputer of the programmable display control unit adopts a high-performance AVR single-chip microcomputer with model number ATMEGA64, and drives the LED display circuit to display through the LED driving circuit (i.e. LED nixie tube driving chip) with model number CH 451. The PB port of the singlechip IC3 is connected with the serial SPI port of the LED drive circuit IC 4. The singlechip IC3 can realize the calibration and measurement of two or one-way current, the effective value reading and the initialization of a sampling chip internal register, and the time-sharing operation of the two chips is respectively realized through chip selection ports CS1 and CS2, and meanwhile, the clock ports of the chip data ports are shared. After the two paths of currents are read by the singlechip IC3 and detected by an internal program, the two paths of currents are compared with a set value, an LED nixie tube driving chip CH451 is sent to an LED display unit through a data bus to display the current value, and setting and modification of the set value are carried out through a man-machine interaction interface, PB0 and PB1 of the singlechip IC3 drive a rear-stage load distribution control unit through connected data buses KD1 and KD2, and simultaneously two LEDs (HIGHTLED 2 and LOWLED 2) connected with an LED driving circuit on a panel emit light during operation.
As shown in fig. 13, 18, 19, 20 and 21, the load distribution control device comprises a control circuit, the control circuit comprises a singlechip and peripheral circuits thereof, the control circuit is connected with an input photoelectric isolation module, the input photoelectric isolation module is connected with an operation state display unit, and the operation state display unit is connected with an input terminal; the control circuit is connected with the relay module through the output photoelectric isolation module, and the relay module is connected with the output terminal. The load distribution control device is started up and down, automatically detects the load sizes and the high-low voltage switch states of the 1# transformer and the 2# transformer, drives the output unit through the output bus, controls the 1# high-voltage switch, the 2# high-voltage switch, the 1# low-voltage wire inlet circuit breaker, the 2# low-voltage wire inlet circuit breaker and the low-voltage contact circuit breaker to realize uninterrupted power linkage switching combination between the two transformers, changes the operation capacity of the transformers, and realizes power-saving operation.
The singlechip in the control circuit adopts a singlechip U81 with the model of ATMEGA64, the input photoelectric isolation module comprises 16 input photoelectric isolation units, and buses of the input photoelectric isolation units DW1 to DW16 are connected with PF and PE ports of the singlechip U81; the output bus of the programmable display control unit is connected with the PB port. The output photoelectric isolation module comprises 16 output photoelectric isolation units, and the output photoelectric isolation units KS 1-KS 16 are connected with 16 relays of K1-K16 in the relay module.
The running state display unit is connected between the input terminal and the input photoelectric isolation module, the input terminals 210 and 211 are connected with the detection resistor R230, the LED light-emitting diode D1 and the photoelectric coupler U49, and the LED light-emitting diode displays the switch state of the low-voltage interconnection cabinet; the input terminals 212 and 213 are connected with a detection resistor R232, an LED D2 and a photoelectric coupler U50, and the LED D2 displays the switching state of the No. 1 high-voltage cabinet; the input terminals 214 and 215 are connected with the detection resistor R234, the LED D3 and the photoelectric coupler U51, and the LED D3 displays the switch state of the No. 2 high-voltage cabinet; input terminals 216, 217, 218, 219 are connected with detection resistors R236, R238, R240, LED light emitting diode D4, LED light emitting diode D5, LED light emitting diode D6, photocoupler U52, photocoupler U53, photocoupler U54, respectively for displaying a 1# low-voltage cabinet switch state, a 1# low-voltage cabinet power supply detection Y (and gate circuit), a 1# low-voltage cabinet power supply detection H (or gate circuit); the input terminals 220, 221, 222 and 223 are connected with a detection resistor R242, a detection resistor R244, a detection resistor R246, an LED light-emitting diode D7, an LED light-emitting diode D8, an LED light-emitting diode D9, a photoelectric coupler U55, a photoelectric coupler U56 and a photoelectric coupler U57, and respectively display the switching state of the 2# low-voltage cabinet, the power detection Y (AND gate circuit) of the 2# low-voltage cabinet and the power detection H (OR gate circuit) of the 2# low-voltage cabinet; the running state of the load detection, distribution and control device is displayed on a display window through an LED, so that inspection staff can observe the running state of the equipment conveniently, and the running state of the equipment can be known.
The singlechip buses KO1 to KO16 of the load distribution control unit are connected with the photoelectric coupling isolation array, and the output of the photoelectric coupler is connected with the relay driving module MC1413 to drive the FH115F high-power relay. The relay K1 and the relay K2 are connected with wiring terminals 106, 107 and 108 to control the on-off of the 1# high-voltage switch respectively; the contacts of the relay K3 and the relay K4 are connected with the wiring terminals 109, 110 and 111 to respectively control the switching-on and switching-off of the No. 2 high-voltage switch; the contacts of the relay K5, the relay K6 and the relay K7 are connected with the wiring terminals 112, 113, 114 and 115 to respectively control the switch energy storage, the switch-on and the switch-off of the No. 1 low-voltage cabinet; the contacts of the relay K8, the relay K9 and the relay K10 are connected with wiring terminals 116, 117, 118 and 119 to respectively control the energy storage, the closing and the opening of the switch of the low-voltage contact cabinet; the contacts of the relay K11, the relay K12 and the relay K13 are connected with the wiring terminals 120, 121, 122 and 123 to respectively control the energy storage, the closing and the opening of the No. 2 low-voltage cabinet; relay K14 contact connection terminals 206, 207 output a 1# transformer fault alarm; relay K15 contact connection terminals 208, 209 output a 2# transformer fault alarm.
As shown in fig. 4, a control schematic diagram in the 1# high-voltage cabinet is shown. The wire outlet ends A411 and N411 of the high-voltage transformer of the No. 1 high-voltage switch cabinet are connected with the wiring terminal 104 and the wiring terminal 105 of the load detection distribution control device, and the wiring terminal 106 is connected with the wiring terminal 3 of the manual/automatic switch K2 of the control loop; the wiring terminal 107 is connected in parallel with the wire inlet end of the switching-on coil 1FK1 of the high-voltage circuit breaker; the wiring terminal 108 is connected in parallel with the wire inlet end of the opening coil 1FK 2; the wiring terminal 212 and the wiring terminal 213 are connected with normally open contacts of the FK auxiliary switch of the high-voltage circuit breaker 1; the wiring terminal 206 and the wiring terminal 207 are connected with the 1# transformer fault alarm relay 1ZK coil to drive the audible and visual alarm to alarm locally, and the other pair of contacts 1ZK2 of the fault alarm relay are connected with the central signal box to be connected with a remote alarm device of the transformer substation to realize remote alarm.
As shown in fig. 5, a control schematic diagram in the 2# high-voltage cabinet is shown. The high-voltage current transformer outgoing terminals A411 and N411 of the No. 2 high-voltage transformer are connected with the wiring terminal 204 and the wiring terminal 205 of the intelligent load detection distribution control device, and the wiring terminal 109 is connected with the manual/automatic switch K3 wiring terminal 3 of the control loop; the wiring terminal 110 is connected in parallel with the wire inlet end of the switching-on coil FK1 of the high-voltage circuit breaker; the wiring terminal 108 is connected in parallel with the wire inlet end of the opening coil FK 2; the wiring terminal 214 and the wiring terminal 215 are connected with normally open contacts of the FK auxiliary switch of the high-voltage circuit breaker 2; the wiring terminal 208 and the wiring terminal 209 are connected with the 2# transformer fault alarm relay 2ZK coil.
As shown in fig. 6, the control schematic diagram of the # 1 low-voltage cabinet. The intelligent load detection distribution control device wiring terminal 112 is connected with the manual/automatic switch K4 automatic wiring terminal of the 1# low-voltage cabinet control loop; the wiring terminal 113 is connected in parallel with an energy storage motor loop of the low-voltage circuit breaker, and the wiring terminal 114 is connected in parallel with a QFX wire inlet end of a closing coil of the low-voltage circuit breaker; the connection terminal 115 is connected in parallel with the low-voltage breaker opening coil QFF wire inlet end.
As shown in fig. 7, a wiring diagram of the intelligent power supply monitor disposed in the No. 1 low-voltage cabinet is shown. Detection power supply terminals A611, B611, C611 and N of the intelligent power supply monitor are respectively connected to loops corresponding to the 1# low-voltage wire inlet cabinet voltmeter; the outgoing terminal 216 is connected with the incoming end of the normally open contact of the auxiliary switch of the low-voltage circuit breaker 1QF1, and the outgoing end of the normally open contact of the auxiliary switch of the low-voltage circuit breaker 1QF1 is connected 217; the terminals 216, 218, 219 and 217 of the outlet end of the intelligent power supply monitor are connected with the terminals 216, 218, 219 and 217 corresponding to the intelligent load detection distribution control device through control cables.
Fig. 8 shows a control schematic diagram of the 2# low-voltage cabinet. The intelligent load detection distribution control device wiring terminal 120 is connected with the manual/automatic switch K5 automatic wiring terminal of the control loop of the 2# low-voltage incoming line cabinet; the wiring terminal 121 is connected in parallel with an energy storage motor loop of the low-voltage circuit breaker, and the wiring terminal 122 is connected in parallel with a QFX wire inlet end of a closing coil of the low-voltage circuit breaker; the wiring terminal 123 is connected in parallel with the QFF wire inlet end of the low-voltage breaker brake-separating coil.
As shown in fig. 9, a wiring diagram of the intelligent power monitor disposed in the No. 2 low-voltage cabinet is shown. The detection power supply terminals A611, B611, C611 and N of the intelligent power supply monitor are respectively connected to the corresponding loops of the 2# low-voltage wire inlet cabinet voltmeter; the outgoing terminal 220 is connected with the incoming terminal of the normally open contact of the auxiliary switch of the low-voltage circuit breaker 1QF1, and the outgoing terminal connecting terminal 221 of the normally open contact of the auxiliary switch of the low-voltage circuit breaker 1QF 1; the intelligent power supply monitor outlet terminals 220, 222, 223 and 221 are connected with the corresponding wiring terminals 220, 222, 223, 221 of the intelligent load detection distribution control device through control cables.
As shown in fig. 10, a control schematic diagram in the low-voltage contact cabinet is shown. The load detection and distribution control device terminal 116 is connected with the manual/automatic switch K6 automatic wiring terminal of the control loop of the low-voltage interconnection cabinet; terminal 117 is connected in parallel with the low-voltage link circuit breaker energy storage motor loop and terminal 118 is connected in parallel with the line terminal of the switch-on coil QFX of the link circuit breaker; the terminals 119 are connected in parallel to the low voltage tie breaker split coil QFF inlet terminals.
The intelligent phase sequence monitor in the low-voltage interconnection cabinet is arranged on a terminal block in the cabinet, and a detection power supply terminal A611, a detection power supply terminal B611, a detection power supply terminal C611, a detection power supply terminal a611, a detection power supply terminal B611, a detection power supply terminal C611, and a detection power supply terminal C611 are respectively connected to corresponding circuits of the interconnection circuit breaker; the locking terminals 1 and 3 are connected in series in a closing coil loop of the connecting circuit breaker; the alarm terminal 7 and the alarm terminal 9 are connected in series in a ZJ coil loop of the alarm relay 3; the normally open contact of the contact breaker QF auxiliary switch is respectively connected with the wiring terminal 210 and the wiring terminal 211 of the intelligent load detection and distribution control device.
The working principle and the working process of the invention applied to the energy-saving distribution substation are as follows:
when the intelligent load detection distribution control device works, the programmable display control unit is used for setting the operation of the 1# transformer, the output terminals 106 and 107 are used for controlling the switching-on coil 1FK1 of the 1# high-voltage cabinet to be electrified, the 1# high-voltage cabinet is switched on, and the 1# transformer is operated; at this time, a CDK-Y1 intelligent power supply monitor is installed on the 1# low-voltage inlet cabinet, the monitor transmits signals of a 1# switch state, power supply detection Y and detection H to an intelligent load detection distribution control device through input terminals 216, 217, 218 and 219 for detecting the phase failure and the undervoltage of the low-voltage power supply, if the power supply is abnormal, a 1# transformer fault alarm is sent, and if the power supply is normal, the 1# low-voltage inlet cabinet is controlled to store energy and close through output terminals 112, 113 and 114; the low-voltage bus (namely the second bus) is electrified, the upper end of the switch of the low-voltage contact cabinet is electrified, the low-voltage contact cabinet is provided with an intelligent phase sequence monitor, the monitor detects the phase sequence of two paths of power supplies, is out of phase, immediately locks and alarms, and normally, and the intelligent load detection distribution control device controls the energy storage and the closing of the low-voltage contact cabinet through the output terminals 116, 117 and 118; the 1# transformer operates to drive all loads, if the capacity ratio of the 1# transformer to the 2# transformer is 1:2, the transformer operating capacity is about 33% of the capacity of two transformers.
When the power consumption load is increased and exceeds the economic operating point of the No. 1 transformer, the intelligent load detection and distribution control device measures the load current through the wiring terminals 104 and 105, compares the load current with the set parameters, and drives the output terminals 109 and 110 to control the switching-on coil 2FK1 of the No. 2 high-voltage cabinet to be electrified according to the comparison result, the No. 2 high-voltage cabinet is switched on, and the No. 2 transformer operates; at this time, the CDK-Y1 intelligent power supply monitor installed on the 2# low-voltage wire inlet cabinet detects the phase-failure and the under-voltage of the power supply, and transmits signals of a 2# switch state, a power supply detection Y and a power supply detection H to the intelligent load detection distribution control device through input terminals 220, 221, 222 and 223, if the power supply is abnormal, a 2# transformer carries out fault alarm, and if the power supply is normal, the 2# low-voltage wire inlet cabinet is controlled to store energy and close through output terminals 120, 121 and 122; and the 1# transformer is withdrawn, and the 2# transformer is fully loaded, so that the transformer running capacity is about 66% of the transformer substation capacity of the two transformers.
When the power consumption load continues to increase and exceeds the economic operating point of the No. 2 transformer, the output terminals 106 and 107 of the intelligent load detection distribution control device control the switching-on coil 1FK1 of the No. 1 high-voltage cabinet to be electrified, the No. 1 high-voltage cabinet is switched on, and the No. 1 transformer is added to operate; output terminals 106, 109 control the tie breaker to trip, with the # 1 transformer and # 2 transformer operating split, at which time the substation capacity is 100%.
When the power consumption load is reduced and is lower than the economic operation point of the two transformers, the intelligent load detection distribution control device controls the contact breaker to close by comparing with the set parameters, the No. 1 transformer is withdrawn from operation, the No. 2 transformer continues to operate, and at the moment, the operation capacity of the transformer is about 66% of the operation capacity of the two transformers.
When the power consumption load continues to decrease and is lower than the economic operation point of the No. 2 transformer, the intelligent load detection distribution control device controls the No. 1 transformer to be put into operation by comparing with the set parameters, the No. 2 transformer is taken out of operation, and the capacity of the transformer substation is 33% or so and repeats.
According to the invention, the 1# transformer and the 2# transformer can operate in the most electricity-saving state through the scheme, so that the loss of the distribution transformer is reduced by about 50-60%, and the effect is very remarkable.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the invention.
Claims (2)
1. Intelligent load detects distribution controlling means, including the shell, its characterized in that still includes:
a load detection metering unit for detecting the load information of the transformer in the distribution substation;
a programmable display control unit for receiving the signal detected by the load detection metering unit; the programmable display control unit comprises a singlechip and an LED display unit connected with the singlechip;
a load distribution control unit that receives the programmable display control unit data;
an operation state display unit for displaying the operation state of the load distribution control unit;
the load distribution control unit comprises a control circuit, the control circuit is sequentially connected with an operation state display unit and an input terminal through an input photoelectric isolation module, the control circuit is sequentially connected with an output terminal through an output photoelectric isolation module and a relay module, and the input terminal and the output terminal are both connected with equipment in a distribution transformer set;
the load distribution control unit is started up and down, automatically detects the load sizes and the states of high-low voltage switches of the 1# transformer and the 2# transformer, and drives the output unit through the output bus to control the 1# high-voltage switch, the 2# high-voltage switch, the 1# low-voltage wire-feeding circuit breaker, the 2# low-voltage wire-feeding circuit breaker and the low-voltage contact circuit breaker to be connected and disconnected between the two transformers in a linkage manner;
the load detection metering unit comprises two processors, and each processor is connected with a transformer through a current signal isolator;
the load detection metering unit collects the load current of the No. 1 high-voltage cabinet through two input terminals 104 and 105, then passes through a primary winding of a current signal isolator T4, a secondary winding of the T4 is connected with a resistor R2 and a capacitor C19 IN parallel, and then is respectively connected with an IN+ and IIN-port of a processor 1C1, collects the load current of the No. 2 high-voltage cabinet through two input terminals 204 and 205, and then passes through a primary winding of the current signal isolator T3, and is respectively connected with an IC2 IN+ and IIN-port after being connected with a resistor R1 and a capacitor C18 IN parallel;
the running state display unit is connected between the input terminal and the input photoelectric isolation module, the input terminal 210 and the input terminal 211 are connected with the detection resistor R230, the LED D1 and the photoelectric coupler U49, and the LED displays the switch state of the low-voltage contact cabinet; the input terminal 212 and the input terminal 213 are connected with the detection resistor R232, the LED D2 and the photoelectric coupler U50, and the LED D2 displays the switching state of the No. 1 high-voltage cabinet; the input terminal 214 and the input terminal 215 are connected with the detection resistor R234, the LED D3 and the photoelectric coupler U51, and the LED D3 displays the switch state of the No. 2 high-voltage cabinet; the input terminal 216, the input terminal 217, the input terminal 218, and the input terminal 219 are connected to the detection resistor R236, the detection resistor R238, the detection resistor R240, the LED light emitting diode D4, the LED light emitting diode D5, the LED light emitting diode D6, the photocoupler U52, the photocoupler U53, and the photocoupler U54, and are respectively used to display the switch state of the 1# low-voltage cabinet, the 1# low-voltage cabinet power detection and gate circuit Y, and the 1# low-voltage cabinet power detection or gate circuit H; the input terminal 220, the input terminal 221, the input terminal 222 and the input terminal 223 are connected with a detection resistor R242, a detection resistor R244, a detection resistor R246, an LED D7, an LED D8, an LED D9, a photoelectric coupler U55, a photoelectric coupler U56 and a photoelectric coupler U57, and respectively display the switching state of the 2# low-voltage cabinet, the power detection AND gate circuit Y of the 2# low-voltage cabinet and the power detection OR gate circuit H of the 2# low-voltage cabinet; and displaying the running state of the load detection and distribution control device on a display window through an LED.
2. The intelligent load detection distribution control device according to claim 1, wherein: and the singlechip of the programmable display control unit is connected with the LED display unit through the LED drive circuit.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0917313A (en) * | 1995-06-30 | 1997-01-17 | Mitsubishi Electric Corp | Load circuit protective device |
| KR20000051350A (en) * | 1999-01-21 | 2000-08-16 | 위성동 | Experiment Practice Kit for PLC output driving |
| KR200310503Y1 (en) * | 2003-01-03 | 2003-04-21 | 허정갑 | automatic cutoff and automatic return type electric leakage perception chapter |
| CN101640425A (en) * | 2009-09-07 | 2010-02-03 | 瞿革荣 | Intelligent electric load management device |
| WO2011067774A1 (en) * | 2009-12-02 | 2011-06-09 | Satyanarayana Manchanahally Venkataramasastry | An intelligent controller |
| CN102313838A (en) * | 2011-07-22 | 2012-01-11 | 重庆大学 | Intelligent load monitoring and mutual supplying method for distribution transformer |
| CN102353895A (en) * | 2011-06-08 | 2012-02-15 | 河北工业大学 | Low voltage breaker life automatic test apparatus |
| CN102437650A (en) * | 2011-12-25 | 2012-05-02 | 西安福安创意咨询有限责任公司 | Intelligent electric power distribution system |
| KR20130047316A (en) * | 2011-10-31 | 2013-05-08 | 한국전력공사 | Automatic load transfer relay for distribution transformer |
| CN203218762U (en) * | 2013-04-23 | 2013-09-25 | 郑州金源特变电气有限公司 | Capacity-variable energy-saving preassembled transformer substation |
| CN205986146U (en) * | 2016-08-25 | 2017-02-22 | 贾杰栋 | Intelligence load detects distribution controlling means |
-
2016
- 2016-08-25 CN CN201610719782.3A patent/CN106532682B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0917313A (en) * | 1995-06-30 | 1997-01-17 | Mitsubishi Electric Corp | Load circuit protective device |
| KR20000051350A (en) * | 1999-01-21 | 2000-08-16 | 위성동 | Experiment Practice Kit for PLC output driving |
| KR200310503Y1 (en) * | 2003-01-03 | 2003-04-21 | 허정갑 | automatic cutoff and automatic return type electric leakage perception chapter |
| CN101640425A (en) * | 2009-09-07 | 2010-02-03 | 瞿革荣 | Intelligent electric load management device |
| WO2011067774A1 (en) * | 2009-12-02 | 2011-06-09 | Satyanarayana Manchanahally Venkataramasastry | An intelligent controller |
| CN102353895A (en) * | 2011-06-08 | 2012-02-15 | 河北工业大学 | Low voltage breaker life automatic test apparatus |
| CN102313838A (en) * | 2011-07-22 | 2012-01-11 | 重庆大学 | Intelligent load monitoring and mutual supplying method for distribution transformer |
| KR20130047316A (en) * | 2011-10-31 | 2013-05-08 | 한국전력공사 | Automatic load transfer relay for distribution transformer |
| CN102437650A (en) * | 2011-12-25 | 2012-05-02 | 西安福安创意咨询有限责任公司 | Intelligent electric power distribution system |
| CN203218762U (en) * | 2013-04-23 | 2013-09-25 | 郑州金源特变电气有限公司 | Capacity-variable energy-saving preassembled transformer substation |
| CN205986146U (en) * | 2016-08-25 | 2017-02-22 | 贾杰栋 | Intelligence load detects distribution controlling means |
Non-Patent Citations (3)
| Title |
|---|
| 400V供电装置智能监测系统研制;王明江;李准;王清华;吴红艳;;电子技术与软件工程;20160819(第16期);全文 * |
| An Evaluation of Selected Solid-State Transformer Topologies for Electric Distribution Systems;Roderick J等;《2015 IEEE Applied Power Electronics Conference and Exposition (APEC) 》;20150511;全文 * |
| 一种智能交流配电设备精密监测装置的设计;常文春;田爱军;;自动化与仪器仪表;20151225(第12期);全文 * |
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