CN106059094B - Distribution substation's transformer energy saving control system and method - Google Patents

Distribution substation's transformer energy saving control system and method Download PDF

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Publication number
CN106059094B
CN106059094B CN201610719888.3A CN201610719888A CN106059094B CN 106059094 B CN106059094 B CN 106059094B CN 201610719888 A CN201610719888 A CN 201610719888A CN 106059094 B CN106059094 B CN 106059094B
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China
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voltage
low
transformer
cabinet
load
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CN106059094A (en
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贾龙飞
贾鹏飞
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BEIJING ELECTRIC ENTERPRISE TECHNOLOGY CO., LTD.
Borlanci group Zhengzhou artificial intelligence Co., Ltd
Zhengzhou advocates Electric Power Technology Co., Ltd.
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贾杰栋
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks

Abstract

Distribution substation's transformer energy saving control system and method provided by the invention, including the N group distribution transformer group being arranged in distribution substation, the detection of connection intelligent load distributes control device in distribution transformer group;Intelligent load detection distribution control device includes the load detecting metering units for detecting 1# transformer and 2# transformer load in distribution substation.The present invention also provides a kind of distribution substation's transformer energy saving control methods, to every group of distribution transformer group in above-mentioned distribution substation, the size of load I and load II is obtained respectively, according to payload size, the low pressure incoming breaker in high-voltage switch gear, low-voltage cabinet, low voltage liaison net the breaker uninterrupted electric shaft switching combination between two transformers in high-voltage board, converts the working capacity of 1# transformer and 2# transformer.The present invention by adopting the above technical scheme can avoid low load with strong power and high load with small power according to load change transformer station high-voltage side bus capacity, realize that distribution substation is unattended.

Description

Distribution substation's transformer energy saving control system and method
Technical field
The present invention relates to distribution substation's transformer energy saving control system and methods.
Background technique
Distribution substation is the important component part of electric system, is the important link directly powered to terminal user, answers extensively For the terminals such as industry, agricultural, the community of city and country energy field.According to statistics, national distribution transformer electric energy loss about 170,000,000,000 thousand Watt-hour is equivalent to 1.7 times of pipe of reinforced concrete at Three Gorges Power Station whole year generated energy, and electric energy loss is extremely serious.As the important measures of energy-saving and emission-reduction, In recent years, China has also put into effect multinomial policy, pushes efficient distribution transformer application and industry development.But in distribution transformer section Whole efficiency level is still relatively low in terms of can control, and energy-saving potential is huge, therefore, studies one kind securely and reliably, economic and practical Distribution substation's transformer energy saving control method becomes distribution transformer operational energy efficiency level in General Promotion China to distribution is reduced Depressor electric energy loss pushes energy-saving and emission-reduction protection environment to be of great significance.
Currently, existing distribution transformer control has the drawback that:
Most of distribution substation's transformer capacities are fixed and invariable, and in actual operation, Demand-side power load is very Wide fluctuations, as community resident's household electricity, power load is larger when being exactly generally morning peak and evening peak, on worker one Class goes away, and whole day has 2/3rds or more time transformers all in unloaded and light condition;It is some to load the work changed greatly Mine enterprise is exactly the large-capacity power distribution transformer also charging operation always in power load very little, causes low load with strong power and light It carries or unloaded, wastes electric energy, be unfavorable for environmental protection.
Especially real estate residential area newly developed, sales cycle is long, owner move in the time do not concentrate, occupancy rate it is low, Transformer loss occupancy electricity ratio is big, transfers average electricity price height before power supply company charges in electricity consumption, is not that property is sustained economic losses, is exactly It conflicts with owner.
After power supply company's management charge is transferred in electricity consumption, only contradiction is shifted, and waste electric energy similarly increases power supply Company operation cost influences power supply company's economic benefit.
Summary of the invention
The object of the invention is that provide it is a kind of can widely applied urban and rural power grids terminal power distribution a kind of distribution substation Transformer energy saving control system and method are immobilized with solving existing distribution substation's distribution transformer capacity, in power load When very light, large-capacity power distribution transformer also charging operation always, low load with strong power, transformer electric energy loss are big, waste of energy, no The problem of conducive to environmental protection.
The invention adopts the following technical scheme:
Distribution substation's transformer energy saving control system, including the N group distribution transformer group being arranged in distribution substation, N is not less than 1, every group of distribution transformer group includes the 1# high-voltage board and 2# high-voltage board connecting with high voltage bus;The 1# high-voltage board and High-voltage switch gear is provided in 2# high-voltage board;Intelligent load detection distribution control is connected between the 1# high-voltage board and 2# high-voltage board Device;
1# transformer is connected on the 1# high-voltage board, 1# transformer connects 1# low-voltage cabinet, and 1# low-voltage cabinet is connected by busbar connector I Connect low-voltage compensation cabinet I, low-pressure line-outgoing cabinet I, the connection of low-pressure line-outgoing cabinet I load I;
2# transformer is connected on the 2# high-voltage board, 2# transformer connects 2# low-voltage cabinet, and 2# low-voltage cabinet passes through busbar connector II Connect low-voltage compensation cabinet II, low-pressure line-outgoing cabinet II, the connection of low-pressure line-outgoing cabinet II load II;In the 1# low-voltage cabinet and 2# low-voltage cabinet It is provided with low pressure incoming breaker;
It further include low voltage liaison net cabinet, the low voltage liaison net cabinet is connected by the connection of busbar connector I load I, by busbar connector II Load II;Low voltage liaison net breaker is set in the low voltage liaison net cabinet;
The intelligent load detection distribution control device includes 1# transformer and 2# transformer load in detection distribution substation Load detecting metering units.
The intelligent load detection distribution control device further include:
Receive the programmable display control unit of the signal of load detecting metering units detection;The programmable display control Unit includes single-chip microcontroller and the LED display unit that connect with single-chip microcontroller;
Receive the load assignment control of programmable display control unit data;
The operating status display unit of display load assignment control operating status.
The load assignment control includes control circuit, and control circuit is sequentially connected by inputting photoelectric isolation module Operating status display unit and input terminal, the control circuit passes sequentially through output photoelectric isolation module and relay module connects Connect output terminal, the LED display unit that the single-chip microcontroller of the programmable display control unit is connected by LED drive circuit;
The load detecting metering units include two processors, and each processor passes through a current signal isolator Connect a transformer.
It further include warning device, the warning device includes the substation central signal remote alarms communicated with distal end Device, the substation central signal remote alarming device are communicated by remote communication module with distal end.
The 1# low-voltage cabinet and 2# low-voltage cabinet are separately connected an intelligent power monitor;Intelligent power monitor detect into The information of the three phase mains of line voltage, and send information to intelligent load detection distribution control device;
The intelligent power monitor includes the power sense circuit for detecting the primary voltage of low voltage incoming line cabinet, power detecting Circuit is separately connected the A phase, B phase, C phase power supply and zero curve of primary voltage by connecting terminal.
The intelligent phase sequence monitor of connecting detection two-way power phase on the low voltage liaison net cabinet;
It is described intelligence phase sequence monitor include
Detect the circuit of testing the phase sequence of the interconnection switch two sides power phase in low voltage liaison net cabinet;
The misphase exclusive circuit being connected in interconnection switch closing coil circuit;
The misphase warning circuit being connected in interconnection switch alarm relay circuit.
N group distribution transformer group, every group of distribution are arranged in the distribution substation for distribution substation's transformer energy saving control method Transformer group includes: 1# high-voltage board, connect with 1# high-voltage board 1# transformer, the 1# low-voltage cabinet being connect with 1# transformer, with 1# low-voltage cabinet passes through low-voltage compensation cabinet I, the low-pressure line-outgoing cabinet I that busbar connector I connects, the connection of low-pressure line-outgoing cabinet I load I;2# high pressure Cabinet, the 2# transformer connecting with 2# high-voltage board, the 2# low-voltage cabinet connecting with 2# transformer are connected with 2# low-voltage cabinet by busbar connector II Low-voltage compensation cabinet II, the low-pressure line-outgoing cabinet II connect, the connection of low-pressure line-outgoing cabinet II load II;It further include low voltage liaison net cabinet, low pressure connection Network cabinet connects load II by the connection of busbar connector I load I, by busbar connector II;
To every group of distribution transformer group in above-mentioned distribution substation, the size of load I and load II is obtained respectively, according to load Size controls the low pressure inlet wire open circuit in 1# high-voltage board and high-voltage switch gear, 1# low-voltage cabinet and 2# low-voltage cabinet in 2# high-voltage board Low voltage liaison net breaker uninterrupted electric shaft between two transformers in device, the low voltage liaison net cabinet being connected with two low-voltage cabinets Switching combination, converts the working capacity of 1# transformer and 2# transformer.
It is high-voltage switch gear in two high-voltage boards of the control, the low pressure incoming breaker in two low-voltage cabinets, low with two The low voltage liaison net breaker in low voltage liaison net cabinet for pressing cabinet connected uninterrupted electric shaft switching combination between two transformers Method are as follows:
To the 2# transformer of 1# transformer and large capacity, II size of load I and load, and real-time judge are obtained respectively in real time The relationship of the normal economical operating point of overall load size and 1# transformer and 2# transformer:
(1) if real time load size is without departing from the economical operating point of 1# transformer, 1# transformer station high-voltage side bus passes through simultaneously 1# low-voltage cabinet and low voltage liaison net cabinet, II operation of band dynamic load I and load;
(2) if load increases, real time load size exceeds the economical operating point of 1# transformer, but without departing from 2# transformer Economical operating point, then 1# transformer exits, 2# transformer station high-voltage side bus, while passing through 2# low-voltage cabinet and low voltage liaison net cabinet, drives negative Carry I and II operation of load;
(3) if load increases, real time load size exceeds the economical operating point of 2# transformer, then 1# transformer and 2# become Depressor puts into operation simultaneously;
(4) if load is reduced, real time load size exceeds the economical operating point of 1# transformer, but without departing from 2# transformer Economical operating point, then 1# transformer is out of service, 2# transformer station high-voltage side bus, at the same pass through 2# low-voltage cabinet and low voltage liaison net cabinet, band II operation of dynamic load I and load;
(5) if load is reduced, real time load size is lower than the economical operating point of 2# transformer, but without departing from 1# transformer Economical operating point, then 2# transformer exits, 1# transformer station high-voltage side bus, while passing through 1# low-voltage cabinet and low voltage liaison net cabinet, drives negative Carry I and II operation of load.
Controlling the high-voltage switch gear in two high-voltage boards, the low pressure incoming breaker in two low-voltage cabinets and two low pressure The mistake of low voltage liaison net breaker uninterrupted electric shaft switching combination between two transformers in the connected low voltage liaison net cabinet of cabinet Cheng Zhong, while the information of the three phase mains of 1# low-voltage cabinet and the primary voltage in 2# low-voltage cabinet is obtained respectively, if three phase mains Information abnormity then carries out onsite alarming simultaneously and alarms remote worker.
Controlling the high-voltage switch gear in two high-voltage boards, the low pressure incoming breaker in two low-voltage cabinets and two low pressure The connected low voltage liaison net breaker of cabinet is examined respectively between two transformers during the combination of uninterrupted electric shaft switching Whether phase sequence is consistent for the two-way power supply of interconnection switch two sides for surveying in low voltage liaison net cabinet, inconsistent, carry out simultaneously onsite alarming and It alarms remote worker, unanimously then low voltage liaison net cabinet carries out energy storage, closes a floodgate.
The present invention by adopting the above technical scheme, the 1# high-voltage board table indoor location intelligent load detection point of (1) at every group With control device, intelligent load detection distribution control device detects 1# transformer, 2# transformer load size respectively, control 1#, 2# high-voltage switch gear, 1#, 2# low pressure incoming breaker, low voltage liaison net the breaker continuous electric shaft switching group between two high-voltage boards It closes, conversion transformer working capacity, avoids low load with strong power and high load with small power, realize that distribution substation is unattended;(2) intelligence is installed Energy Power Supply Monitoring instrument detects power supply and simultaneously detects distribution control device transmitting signal to intelligent load, and intelligent load detects distribution control Device processed controls intelligent load detection distribution control device program operation according to intelligent power monitor signal;(3) intelligence is installed Energy phase sequence monitor, detection two-way power phase is consistent, and discovery misphase is latched and alarms, and prevents misphase combined floodgate from accident occurs.
Detailed description of the invention
Fig. 1 is the structural block diagram of system of the invention.
Fig. 2 is distribution substation's system diagram.
Fig. 3 is intelligent load detection distribution control device outline drawing.
Fig. 4 is 1# high-voltage board control principle drawing.
Fig. 5 is 2# high-voltage board control principle drawing.
Fig. 6 is 1# low pressure incoming breaker control schematic diagram.
Fig. 7 is the wiring diagram for the intelligent power monitor being arranged in 1# low voltage incoming line cabinet.
Fig. 8 is 2# low pressure incoming breaker control schematic diagram.
Fig. 9 is the wiring diagram for the intelligent power monitor being arranged in 2# low voltage incoming line cabinet.
Figure 10 is the control schematic diagram of low voltage liaison net cabinet breaker.
Figure 11 is the wiring diagram for the intelligent phase sequence monitor being arranged in low voltage liaison net cabinet.
Figure 12 is intelligent load detection distribution control device schematic diagram 1.
Figure 13 is intelligent load detection distribution control device schematic diagram 2.
Figure 14 is the structural block diagram of substation central signal remote alarming device.
Figure 15 is the structural schematic diagram of substation central signal remote alarming device.
Figure 16 is the electrical schematic diagram of substation central signal remote alarming device.
Figure 17 is the electrical schematic diagram of the power circuit of substation central signal remote alarming device.
Figure 18 is the outline drawing of the intelligent phase sequence monitor of Figure 11.
Figure 19 is the detection circuit figure of intelligent phase sequence monitor, wherein (A) is the detection control being connected between A phase and a phase Circuit diagram processed, (B) are the detection electric operation control circuit figure being connected between B phase and b phase, and (C) is the inspection being connected between C phase and c phase Survey electric operation control circuit figure, (D) misphase exclusive circuit figure;(E) misphase warning circuit figure.
Figure 20 is the shape wiring diagram for being connected to Fig. 6 and Fig. 8 intelligent power monitor.
Figure 21 is the detection circuit figure of intelligent power monitor, wherein (A) is the power supply inspection being connected between A phase and zero curve The circuit diagram of control circuit is surveyed, (B) is connected to the circuit diagram of the power detecting control circuit between B phase and zero curve, and (C) is connection The circuit diagram of power detecting control circuit between C phase and zero curve;It (D) is detection H circuit diagram, (E) is detection Y circuit diagram.
Figure 22 is the detail view of Figure 12 part A.
Figure 23 is the detail view of Figure 12 part B.
Figure 24 is the detail view of Figure 12 C portion.
Figure 25 is the detail view of the part Figure 12 D.
Figure 26 is the detail view of Figure 13 part A.
Figure 27 is the detail view of Figure 13 part B.
Figure 28 is the detail view of Figure 13 C portion.
Figure 29 is the detail view of the part Figure 13 D.
Specific embodiment
As depicted in figs. 1 and 2, the present invention provides distribution substation's transformer energy saving control system, it is by the two of distribution substation first Distribution transformer more than platform is grouped, and every two are divided into one group, is divided into N group distribution transformer group, every group of distribution transformer Device group includes the 1# high-voltage board and 2# high-voltage board connecting with high voltage bus, connects 1# transformer, 1# transformer on 1# high-voltage board 1# low-voltage cabinet is connected, 1# low-voltage cabinet connects low-voltage compensation cabinet I, low-pressure line-outgoing cabinet I by busbar connector I, and the connection of low-pressure line-outgoing cabinet I is negative Carry I;2# transformer is connected on 2# high-voltage board, 2# transformer connects 2# low-voltage cabinet, and 2# low-voltage cabinet connects low pressure by busbar connector II Compensating cabinet II, low-pressure line-outgoing cabinet II, the connection of low-pressure line-outgoing cabinet II load II;Low voltage liaison net cabinet by busbar connector I connection load I, Pass through the connection of busbar connector II load II;1# transformer is connected with 2# transformer, and above-mentioned low-voltage cabinet and low-voltage compensation cabinet is Conventional power distribution cabinet in the prior art.The connection of high-voltage board, transformer, low-voltage cabinet is conventional electrical connection.Above-mentioned low-voltage cabinet Including low voltage incoming line cabinet, low voltage incoming line cabinet use can be used as.
On 1# high-voltage board and 2# high-voltage board, it is connected with intelligent load detection distribution control device.Intelligent load detection point It may be disposed in the control room in 1# high-voltage board or 2# high-voltage board with control device.Intelligent load detection distribution control device is automatic Detection 1# the high-voltage board payload size, the high and low voltage switch state that connects with 2# high-voltage board, 1# high-voltage switch gear in control high-voltage board, 2# high-voltage switch gear, 1# low pressure incoming breaker, 2# low pressure incoming breaker, low voltage liaison net breaker are between two transformers The combination of electric shaft switching is not powered off, and conversion transformer working capacity avoids low load with strong power and high load with small power, realizes distribution substation It is unattended, switchgear automatic energy storage, combined floodgate, separating brake, distribution substation's intelligent transformer power-saving running.
Such as the shape wiring diagram that Fig. 3 is intelligent load detection distribution control device, it is provided with LED display unit, fortune Row status display unit, input terminal, output terminal 004.
The electric current of load I and load II that load detecting metering units acquisition 1# high-voltage board is connected with 2# high-voltage board, then Signal conversion is carried out by two processors (IC1, IC2).Wherein processor 1C1 receives load by current signal isolator T4 The signal of the 1# transformer of signal pickup assembly acquisition is detected, processor IC2 receives load inspection by current signal isolator T3 Survey the signal of the 2# transformer of signal pickup assembly acquisition.Processor IC1, processor IC2 are two high-precision two-way DPS high The CA/AD digital-to-analogue conversion of precision handles chip, such as the chip of existing model CS5460, CS5460DPS high-precision and band There is serial line interface IC chip, the two-way serial ports comprising two converters and microcontroller communication, it contains two increasings Beneficial programmable amplifier, two highpass filters have system calibration and virtual value computing function, to provide transient data sampling And period calculated result, automatic detection judge signal polarity, the adaptive operation of program, serial ports and programmable display control unit The I/O port of single-chip microcontroller IC3 connects.
In shape wiring diagram shown in as shown in Figure 3, load detecting metering units pass through 104 and 105 two input terminals The load current for acquiring 1# high-voltage board, using the primary side winding of the current signal isolator T4 in Figure 12, the vice-side winding of T4 After second resistance in parallel and the 19th capacitor, it is separately connected the port IN+, IIN- of processor 1C1, passes through 204 and 205 two Input terminal acquires the load current of 2# high-voltage board, using the current signal isolator T3 primary side winding in Figure 12, secondary side around IC2 IN+, the port IIN- are separately connected after group parallel connection R1, C18.
Programmable display control unit includes single-chip microcontroller IC3, is connected with LED display circuit on single-chip microcontroller IC3, it further includes Programmable device, signal modulation circuit, serial communication circuit etc., single-chip microcontroller IC3 mainly realize the reading data of whole system, calibration, Control, signal, communication and man-machine mutual handover mouth carry out the functions such as definite value setting and modification.
As shown in figure 12, the single-chip microcontroller that may be programmed display control unit is mono- using the high-performance AVR of model ATMEGA64 Piece machine, it drives LED display circuit to be shown by the LED drive circuit (i.e. LED charactrons driving chip) of model CH451 Show.The serial SPI interface of the PB mouth and LED drive circuit IC4 of single-chip microcontroller IC3.Single-chip microcontroller IC3 can realize two-way or single channel electric current Calibration, measurement and virtual value are read and the initial work of sampling A/D chip internal register, and by chip select terminal mouth CS1, CS2 realizes the time-sharing operation to the chip of two panels, while co-used chip data port clock port respectively.Single-chip microcontroller IC3 is read After two-way electric current and internal processes detection after compared with setting value, by data/address bus send LED charactrons driving chip CH451 drive Dynamic LED display unit shows the setting and modification of current value and the definite value carried out by man-machine interactive interface, single-chip microcontroller IC3's PB0, PB1 drive successive load assignment control by data/address bus KD1, KD2 of connection, when working at the same time on panel with Two LED(HIGHTLED2, LOWLED2 of LED drive circuit connection) it shines.
As shown in figure 13, load distribution control device includes control circuit, and control circuit uses single-chip microcontroller and its periphery electricity Road, connection input photoelectric isolation module in control circuit, input photoelectric isolation module connect operating status display unit, run shape State display unit connects input terminal;Control circuit is connected by output photoelectric isolation module and relay module, relay mould Block connects output terminal.
As shown in fig. 13 that, the single-chip microcontroller of control circuit use model ATMEGA64 single-chip microcontroller U81, input photoelectricity every It include 16 input phototube coupling units from module, input Phototube Coupling cells D W1 is to DW16 bus connection single-chip microcontroller U81's The port PF, PE;Programmable display control unit output bus connects PB mouthfuls.Output photoelectric isolation module includes 16 output photoelectrics Isolated location, 16 relays of K1 ~ K16 in output photoelectric isolated location KS1 ~ KS16 connection relay module.
Operating status display unit is connected between input terminal and input photoelectric isolation module, input terminal 210,211 Connecting detection resistance R230, LED light emitting diode D1, photoelectrical coupler U49, LED diode displaying low voltage liaison net cabinet are opened Off status;Input terminal 212,213 connecting detection resistance R232, LED light emitting diode D2, photoelectrical coupler U50, LED are luminous Diode D2 shows the switch state of 1# high-voltage board;Input terminal 214,215 connecting detection resistance R234, LED light emitting diodes D3, photoelectrical coupler U51, LED light emitting diode D3 show 2# high-voltage board switch state;Input terminal 216,217,218,219 Connecting detection resistance R236, R238, R240, LED light emitting diode D4, LED light emitting diode D5, LED light emitting diode D6, light Electric coupler U52, photoelectrical coupler U53, photoelectrical coupler U54 are respectively intended to display 1# low-voltage cabinet switch state, 1# low-voltage cabinet Power detecting Y(AND gate circuit), 1# low-voltage cabinet power detecting H(OR circuit);The connection inspection of input terminal 220,221,222,223 Measuring resistance R242, detection resistance R244, detection resistance R246, LED light emitting diode D7, LED light emitting diode D8, LED shine Diode D9, photoelectrical coupler U55, photoelectrical coupler U56, photoelectrical coupler U57, show respectively 2# low-voltage cabinet switch state, 2# low-voltage cabinet power detecting Y(AND gate circuit), 2# low-voltage cabinet power detecting H(OR circuit);Distribute load detecting to control dress Operating status is set by LED diode displaying in display window, is observed convenient for tour personnel, understands equipment operation condition.
Load microcontroller bus KO1 to KO16 connection photoelectric coupling isolated array, the photoelectrical coupler of assignment control Output connection relay driving module MC1413, drives FH115F high power relay.Wherein, relay K1, relay K2 are touched Point connection connecting terminal 106,107,108 controls 1# high-voltage switch gear combined floodgate, separating brake respectively;Relay K3, the contact relay K4 connect Connecting terminal 109,110,111 is connect, controls 2# high-voltage switch gear combined floodgate, separating brake respectively;Relay K5, relay K6, relay K7 Contact connects connecting terminal 112,113,114,115, controls 1# low-voltage cabinet energy storing of switch, combined floodgate, separating brake respectively;Relay K8, Relay K9, the contact relay K10 connect connecting terminal 116,117,118,119, respectively control low voltage liaison net cabinet energy storing of switch, It closes a floodgate, separating brake;Relay K11, relay K12, the contact relay K13 connect connecting terminal 120,121,122,123, control respectively 2# low-voltage cabinet energy storage processed, combined floodgate, separating brake;The contact relay K14 connects connecting terminal 206,207 and exports 1# transformer fault report It is alert;The contact relay K15 connects connecting terminal 208,209 and exports the alarm of 2# transformer fault.
As shown in Figure 4, it is the control principle drawing in 1# high-voltage board.Wherein, 1# high-tension switch cabinet (i.e. 1# high-voltage board) is high Voltage current transformer leading-out terminal A411, N411 and load detecting distribution control device connecting terminal 104, connecting terminal 105 connect, The terminals 3 of the connection of the connecting terminal 106 manual/auto switch K2 of control loop;Connecting terminal 107 simultaneously connects high voltage circuit breaker closing The end of incoming cables coil 1FK1;Connecting terminal 108 is attempted by the end of incoming cables opening coil 1FK2;Connecting terminal 212, connecting terminal 213 connect High-voltage circuitbreaker 1FK auxiliary switch normally opened contact;Connecting terminal 206, connecting terminal 207 connect 1# transformer fault alarm relay 1ZK coil drives combined aural and visual alarm to alarm on the spot by make contact 1ZK1, and another contact 1ZK2 of fault alarm relay is connected Central signal case, central signal want that connecting substation central signal remote alarming device realizes remote alarms, substation central letter Number remote alarming device is connect by remote communication module with distribution substation staff's mobile phone, by fault condition with short message or micro- The other forms such as letter are alarmed.
As shown in figure 5, for the control principle drawing in 2# high-voltage board.Wherein, the high-tension current inductor outlet of 2# high-voltage board A411, N411 and intelligent load detection distribution control device connecting terminal 204, connecting terminal 205 is held to connect, connecting terminal 109 Connect the manual/auto switch K3 terminals 3 of control loop;Connecting terminal 110 simultaneously connects high voltage circuit breaker closing coil FK1 inlet wire End;Connecting terminal 108 is attempted by the end of incoming cables opening coil FK2;Connecting terminal 214, connecting terminal 215 meet high-voltage circuitbreaker 2FK Auxiliary switch normally opened contact;Connecting terminal 208, connecting terminal 209 connect 2# transformer fault alarm relay 2ZK coil, pass through Make contact 2ZK1 drives combined aural and visual alarm to alarm on the spot, and another pair of contact 2ZK2 of fault alarm relay connects central signal Case connects substation's remote alarming device and realizes remote alarms, and remote alarming device is worked by remote communication module and distribution substation The connection of personnel's mobile phone, by fault condition, the other forms such as short message or wechat are alarmed.
As shown in fig. 6,1# low pressure incoming breaker control schematic diagram.Intelligent load detection distribution control device connecting terminal The 112 connection manual/auto switch K4 automatic connection ends of 1# low-voltage cabinet control loop;Connecting terminal 113 simultaneously connects low-voltage circuit breaker storage Energy electric motor loop, connecting terminal 114 simultaneously connect the end of incoming cables low-voltage circuit breaker closing coil QFX;It is disconnected that connecting terminal 115 is attempted by low pressure The road end of incoming cables device opening coil QFF.
As shown in fig. 7, for the wiring diagram for the intelligent power monitor being arranged in 1# low voltage incoming line cabinet.Intelligent power monitoring Detection power supply terminal A611, B611, C611, N of instrument are connect respectively on the corresponding circuit of 1# low voltage incoming line cabinet voltmeter, detect into The information of the three phase mains of line voltage;Outlet terminal 216 is connected with low-voltage circuit breaker 1QF1 auxiliary switch normally opened contact end of incoming cables, Low-voltage circuit breaker 1QF1 auxiliary switch normally opened contact leading-out terminal connection 217;The terminal 216 of intelligent power monitor leading-out terminal, end Son 218, terminal 219 pass through control cable connecting terminal corresponding with intelligent load detection distribution control device together with terminal 217 216, connecting terminal 218, connecting terminal 219, connecting terminal 217 connect.
As shown in figure 8, being 2# low pressure incoming breaker control schematic diagram.Intelligent load detection distribution control device terminals Son 120 connects the manual/auto switch K5 automatic connection end of 2# low voltage incoming line cabinet control loop;Connecting terminal 121 and to connect low pressure disconnected Road device energy storage motor loop, connecting terminal 122 simultaneously connect the end of incoming cables low-voltage circuit breaker closing coil QFX;Connecting terminal 123 is attempted by The end of incoming cables low-voltage circuit breaker opening coil QFF.
As shown in figure 9, for the wiring diagram for the intelligent power monitor being arranged in 2# low voltage incoming line cabinet.Intelligent power monitoring Detection power supply terminal A611, terminal B611, terminal C611, the terminal N of instrument connect corresponding in 2# low voltage incoming line cabinet voltmeter respectively On circuit;Outlet terminal 220 is connected with low-voltage circuit breaker 1QF1 auxiliary switch normally opened contact end of incoming cables, and low-voltage circuit breaker 1QF1 is auxiliary Help switch normally opened contact leading-out terminal connection terminal 221;Intelligent power monitor line end terminator 220, terminal 222, terminal 223 connect With terminal 221 by control cable and intelligent load detection distribute the corresponding connecting terminal 220 of control device, connecting terminal 222, Connecting terminal 223, connecting terminal 221 connect.
It as shown in Figure 10, is control schematic diagram in low voltage liaison net cabinet.Load detecting distribution control device terminal 116 connects low The pressure contact manual/auto switch K6 automatic connection end of cabinet control loop;Terminal 117 simultaneously connects low voltage liaison net breaker energy storage motor time Road, terminal 118 simultaneously connect the end of incoming cables network interconnecting circuit closing coil QFX;Terminal 119 is attempted by low voltage liaison net breaker open operation coil The end of incoming cables QFF.
As shown in figure 11, the intelligent phase sequence monitor in low voltage liaison net cabinet is mounted on cabinet inner terminal row, detects power end Sub- A611, terminal B611, terminal C611, terminal a611, terminal b611, terminal c611, connect respectively it is right above and below network interconnecting circuit On the circuit answered;Locking terminal 1,3 is serially connected in the closing coil circuit of network interconnecting circuit;Alarm terminals 7, alarm terminals 9 are gone here and there It connects in alarm relay 3ZJ wire loop;Network interconnecting circuit QF auxiliary switch normally opened contact is separately connected intelligent load detection Distribute control device connecting terminal 210,211 terminal of connecting terminal.
Above-mentioned substation central signal remote alarming device is as shown in Figure 14 ~ 17.
As shown in figure 14, it includes Central Substation signal box;For acquiring the letter of signal in Central Substation signal box Number Acquisition Circuit;Signal for acquiring to signal acquisition circuit carries out the photoelectric coupling isolation circuit of Phototube Coupling;For right The control circuit handled by the signal of photoelectric isolating circuit;Gsm module for being communicated with control circuit;For The remote-end alarm equipment communicated with gsm module;For the power circuit for control circuit, gsm module power supply.
The preferred single chip machine controlling circuit of above-mentioned control circuit takes over from the past and sets a new course for the future to realize that substation central signal remote alarms fill The command centre set, it will collect the information such as signalizing activity situation and be alarmed by gsm module to related personnel, realize substation Central signal remote alarms.
Above-mentioned photoelectric coupling isolation circuit sends the signal of acquisition to single-chip microcontroller control by signal photoelectric conversion circuit Circuit processed, photoelectric coupling isolation circuit are mainly used to prevent high voltage, strong electromagnetic, improve the anti-of single chip machine controlling circuit Disturb ability.
The alarm signal that above-mentioned remote-end alarm equipment is issued for remotely receiving gsm module, including staff are hand-held Portable terminal and/or monitoring server for carrying out remote monitoring.Specifically, may include platform area electrician's mobile phone, Any one or a few in power supply station's safety supervision person's mobile phone, county telephone central office's safety supervision platform.
Gsm module is primarily used to establish wireless channel, alert.It include for and remote-end alarm equipment into The antenna of row communication, the control system being connected with antenna, the gsm communication module being connected with communication system.And control system uses Single-chip computer control system.Every substation central signal screen remote alarming device need to handle one to local GSM network operator SIM cards of mobile phones, and short message function is opened, electronic ID card of the number as every central signal screen remote alarming device.
Power circuit provides electric energy for substation central signal remote alarming device.Including the AC/ being connect with mains supply DC conversion circuit, the backup power source circuit being connected with AC/DC conversion circuit, the voltage regulator circuit being connected with backup power source circuit, Voltage regulator circuit connects control circuit, and backup power source circuit connects gsm module, and backup power source circuit includes Li-ion batteries piles and is The charge circuit of Li-ion batteries piles charging.Backup power source circuit mainly for prevent be powered make gsm module can not work into And can not alarm, using backup power source circuit, both make to power off, substation central signal remote alarming device can also work normally.
As shown in figure 15, signal acquisition circuit be arranged in Central Substation signal box accident alarming relay 1YJ, Signal alarm relay 2YJ, 1# transformer fault alarm relay 3YJ, 2# transformer fault alarm relay 4YJ, contact report Alert relay 5YJ is connected.
In circuit as shown in figure 16, the working principle of the invention and process are as follows:
When substation works normally, central signal screen remote alarming device is in standby, when substation facilities is sent out When raw emergency stop valve trip, the accident alarming relay 1YJ closed action of central signal screen makes Vcc power supply pass through the corresponding of exclusion RP1 Resistance, closure accident alarming relay 1YJ to photoelectrical coupler O1 power, after Phototube Coupling is converted, to single-chip microcontroller IC1P3.0 mouthfuls of input signals, after single-chip microcontroller is to signal processing, control gsm module issues " power transformation to distribution management electrician's mobile phone Institute's emergency stop valve trip, asks fast processing " alarm signal, notify distribution management electrician speed to go to handle.
When substation facilities is abnormal, and anticipating signal occurs, central signal screen signal alarm relay 2YJ closure is dynamic Make, Vcc power supply powers to photoelectrical coupler O2 by the corresponding resistor of exclusion RP1, the signal alarm relay 2YJ of closure, warp Phototube Coupling conversion, to IC1P3.0 mouthfuls of input signals of single-chip microcontroller, after single-chip microcontroller is handled, control gsm module is electric to distribution management Work mobile phone issues " electric substation is abnormal, asks fast inspection " alarm signal, and notice distribution management electrician speed goes to check.
When phase shortage, under-voltage fault occur for electric substation's 1# transformer, alarm occur, central signal screen 1# transformer fault Alarm relay 3YJ closed action, Vcc power supply pass through the corresponding resistor of exclusion RP1, the 1# transformer fault alarm relay of closure Device 3YJ powers to photoelectrical coupler O3, converts through Phototube Coupling, to IC1P3.0 mouthfuls of input signals of single-chip microcontroller, carries out through single-chip microcontroller After signal judgement processing, control gsm module issues " 1# transformer fault asks fast maintenance " alarm signal to distribution management electrician's mobile phone Number, notice distribution management electrician speed goes to overhaul.
When phase shortage, under-voltage fault occur for electric substation's 2# transformer, alarm occur, central signal screen 2# transformer fault Alarm relay 4YJ closed action, Vcc power supply pass through the corresponding resistor of exclusion RP1, the 2# transformer fault alarm relay of closure Device 4YJ, which is closed, powers to photoelectrical coupler O4, converts through Phototube Coupling, to IC1P3.0 mouthfuls of input signals of single-chip microcontroller, through single-chip microcontroller into After row signal judgement processing, control gsm module issues " 2# transformer fault asks fast maintenance " alarm to distribution management electrician's mobile phone Signal, notice distribution management electrician speed go to overhaul.
When misphase failure occurs for electric substation's contact cabinet, when there is alarm, central signal screen contact alarm relay 5YJ is closed Conjunction movement, Vcc power supply power to photoelectrical coupler O5 by the corresponding resistor of RP1, the contact alarm relay 5YJ of closure, warp Phototube Coupling conversion after single-chip microcontroller carries out signal judgement processing, controls gsm module to IC1P3.0 mouthfuls of input signals of single-chip microcontroller " contact cabinet misphase, ask fast processing " alarm signal is issued to distribution management electrician's mobile phone, notice distribution management electrician speed goes to handle, It alarms simultaneously to county, power supply station, township safety supervision personnel mobile phone and security monitor platform.
As shown in figure 17, power module DY, capacitor E2, C4 form AC/DC conversion circuit, provide power supply for monitoring device, Voltage stabilizing chip IC3, capacitor E6, C7 composition voltage regulator circuit power to single-chip microcontroller;Voltage stabilizing chip IC2, resistance R7, R6, diode D4, D5, capacitor E3, E4, E5, C5, C6, battery pack BT1 composition backup power source circuit provide backup power supply for monitoring device.
As shown in Figure 18,19, for the structure chart and electric diagram of the intelligent phase sequence monitor being mounted in low voltage liaison net cabinet.
Intelligent phase sequence monitor includes shell, the interconnection switch two sides phase being provided in detection low voltage liaison net cabinet in shell The circuit of testing the phase sequence of sequence, is connected to interconnection switch report at the misphase exclusive circuit being connected in interconnection switch closing coil circuit Misphase warning circuit in alert relay circuit.It is provided with outside shell and is connect with what external interconnection switch corresponding position was attached Line terminals.Intelligent phase sequence monitor shell is small in size, is made using engineering plastics, other materials also can be used, using deck Formula structure is easily installed on power distribution terminal item.The two-way that above-mentioned low voltage liaison net cabinet connection is connected from different transformers Load.
Above-mentioned circuit of testing the phase sequence is separately connected the A phase, B phase, C phase power supply of the upper end interconnection switch QF by connecting terminal With a phase, b phase, c phase power supply of lower end.As shown in Figure 10, A611, B611, C611 of circuit of testing the phase sequence connect interconnection switch QF In upper end A, B, C three-phase circuit;A611, b611, c611 are connected on another way A, B, C three-phase circuit of the lower end interconnection switch QF.
As shown in figure 19, circuit of testing the phase sequence include be connected between A phase and a phase, between B phase and b phase, C phase and C Control circuit is detected on three tunnels between phase, and every road detection control circuit mainly includes RC circuit, the rectification with RC circuit connection Circuit, the electric bridge detection circuit being connected with the rectifying circuit, the operational amplification circuit being connect with electric bridge detection circuit and with electric bridge examine The output relay circuit of slowdown monitoring circuit connection.
As shown in Figure 19 (A), for the detection electric operation control circuit figure being connected between A phase and a phase, wherein intelligent phase sequence monitoring The shunt circuit of connecting terminal A611 connection the first capacitor device C1 and first resistor R1 of instrument, the first rectification of shunt circuit connection The anode of diode D1;Connecting terminal a611 passes through the anode of the second rectifier diode of second resistance R2 connection D2, the first rectification Diode D1, the second rectifier diode D2, the 4th rectifier diode D4, the 5th rectifier diode D5 form bridge rectifier, 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 form electric bridge detection circuit, and electric bridge detection circuit is in parallel It is connected to cathode, the 4th rectifier diode D4 of the first rectifier diode D1 and the second rectifier diode D2 of bridge rectifier And the 5th rectifier diode D5 anode between, third diode D3, the second capacitor C2,1 group of the first three-terminal voltage-stabilizing IC circuit At isolation filter voltage regulator circuit, it is connected to the connected one end 3rd resistor R3 and the 4th resistance R4, while being the second operation amplifier Device IC2, third drive module IC3, I J1 of relay provide power supply, detect the output connection second operational amplifier of bridge circuit Positive and negative two input pins of IC2, the output of second operational amplifier IC2 connect the 7th resistance R7, the 7th resistance R7 connection the The output of three capacitor C3 and third drive module IC3 input pin, third drive module IC3 connects I J1 of relay;Above-mentioned electricity Lu Zhong, the first three-terminal voltage-stabilizing IC circuit 1 are preferably that LM7824, second operational amplifier IC2 are preferably LM358, third driving mould Block IC3 is preferably MC1413.
As shown in Figure 19 (B), for the detection electric operation control circuit figure being connected between B phase and b phase, wherein intelligent phase sequence monitoring The shunt circuit of connecting terminal B611 connection the 5th the capacitor C5 and the 8th resistance R8 of instrument, the 6th rectification of shunt circuit connection The anode of diode D6;Connecting terminal b611 is by the anode of the tenth rectifier diode D10 of the 14th resistance R14 connection, and the 6th Rectifier diode D6, the 7th rectifier diode D7, the 9th rectifier diode D9, the tenth rectifier diode D10 form bridge rectifier Circuit, the 9th resistance R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12 form electric bridge detection circuit, electric bridge Detection circuit be connected in parallel the 6th rectifier diode D6 of bridge rectifier and the cathode of the 7th rectifier diode D7 connection, Between 9th rectifier diode D9 and the anode of the tenth rectifier diode D10 connection, the 8th diode D8, the 6th capacitor C6, 4th three-terminal voltage-stabilizing IC circuit 4 forms isolation filter voltage regulator circuit, is connected to the 9th resistance R9 and the tenth resistance R10 is connected one End, while power supply is provided for the 5th operational amplifier IC5, the 6th drive module IC6, II J2 of relay, detect bridge circuit Positive and negative two input pins of the 5th operational amplifier IC5 of output connection, the output connection the 13rd of the 5th operational amplifier IC5 The 7th capacitor C7 of resistance R13, thirteenth resistor R13 connection and the 6th drive module IC6 input pin, the 6th drive module The output of IC6 connects II J2 of relay;In foregoing circuit, the 4th three-terminal voltage-stabilizing IC circuit 4 preferably LM7824, the 5th operation are put It is preferably MC1413 that big device IC5, which is preferably LM358, the 6th drive module IC6,.
As shown in Figure 19 (C), for the detection electric operation control circuit figure being connected between C phase and c phase, wherein intelligent phase sequence monitoring The shunt circuit of connecting terminal C611 connection the 9th the capacitor C9 and the 15th resistance R15 of instrument, shunt circuit connection the tenth The anode of one rectifier diode D11;Connecting terminal c611 passes through the 15th rectifier diode D15's of the 16th resistance R16 connection Anode, the 10th first-class diode D11, the 12nd rectifier diode D12, the 14th rectifier diode D14, the 15th rectification two Pole pipe D15 forms bridge rectifier, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th resistance R20 forms electric bridge detection circuit, electric bridge detection circuit be connected in parallel bridge rectifier the 10th first-class diode D11, The cathode of 12nd rectifier diode D12 connection, the 14th rectifier diode D14 and the 15th rectifier diode D15 connection Between anode, the 13rd diode D13, the tenth capacitor C10, the 7th three-terminal voltage-stabilizing IC circuit 7 composition isolation filter pressure stabilizing electricity Road is connected to the connected one end the 17th resistance R17 and the 18th resistance R18, while being the 8th operational amplifier IC8, the 9th Drive module IC9, III J3 of relay provide power supply, detect the positive and negative of the 8th operational amplifier IC8 of output connection of bridge circuit Two input pins, the output of the 8th operational amplifier IC8 connect the 21st resistance R21, the 21st resistance R21 connection the The output of 11 capacitor C11 and the 9th drive module IC9 input pin, the 9th drive module IC9 connects III J3 of relay;On It states in circuit, the 7th three-terminal voltage-stabilizing IC circuit 7 is preferably that LM7824, the 8th operational amplifier IC8 are preferably LM358, the 9th drive Dynamic model block IC9 is preferably MC1413.
It is misphase exclusive circuit as shown in Figure 19 (D), it includes I J1- of normally-closed contact for I J1 of relay being connected in series 1, III J3-1 of normally-closed contact of II J2-1 of normally-closed contact of relay J2, relay J3.As shown in Figure 10, it is connected on low pressure connection In the circuit of the interconnection switch QF closing coil QFX of network breaker.
It is misphase warning circuit, it includes I J1-2 of normally opened contact, the normally opened contact II being connected in parallel as shown in Figure 19 (E) J2-2, III J3-2 of normally opened contact.As shown in Figure 10, it is connected on the interconnection switch QF alarm relay of low voltage liaison net breaker In the circuit of 3ZJ.Figure 10 is the control schematic diagram of low voltage liaison net breaker.Intelligent phase sequence monitor CDK-X1 is connected to breaker Control loop on.
In the case of when the work of intelligent phase sequence monitor, Everything is fine, normally-closed contact J1-1, the relay of I J1 of relay The normally-closed contact J2-1 of II J2, III J3-1 of normally-closed contact of relay J3 are connected in series and connect, and form misphase exclusive circuit, should Wrong item exclusive circuit is connected in the circuit interconnection switch QF closing coil QFX, and interconnection switch can normally close a floodgate.
When interconnection switch upper and lower port has any one phase misphase, intelligent phase sequence monitor detects interconnection switch upper and lower side Mouth phase sequence misphase, is started by the RC circuit of phase sequence control circuit, rectification circuit, electric bridge detection circuit, operational amplification circuit The drive module of relay drives the actuating of relay, and normally-closed contact J1-1, normally-closed contact J2-1, III J3-1 of normally-closed contact connect, Arbitrarily relay disconnects all the way, is switched off the ring current of interconnection switch QF closing coil, realizes locking, interconnection switch QF cannot It closes a floodgate, while passing through alarm circuit sending alarm signal, the normally opened contact of I J1-2 of normally opened contact of relay JI, relay J2 II J2-2, relay J3 III J3-2 of normally opened contact be connected in parallel, any normally opened contact closure, sending alarm signal, notice Maintenance.
As Fig. 7, Fig. 9 show connecing for the intelligent power monitor being mounted in 1# low voltage incoming line cabinet and 2# low voltage incoming line cabinet Line chart.Intelligent power monitor can detect the situations such as whether normal, the under-voltage, phase shortage of three phase mains, detect and distribute to intelligent load Control device transmits signal, and intelligent load detection distribution control device analyzes and determines control intelligence according to intelligent power monitor signal Energy load detecting distribution control device program operation, interrupts if any abnormal conditions and issues alarm signal.Such as Figure 20,21 institutes It is shown as the circuit diagram and wiring schematic diagram of intelligent power monitor.It is mainly subsequent intelligent load detection distribution control device Stabilization signal is provided, the power sense circuit of the primary voltage including detecting low voltage incoming line cabinet;It further include shell, the power supply inspection Slowdown monitoring circuit is arranged in shell, passes through the phase of the connecting terminal and the primary voltage of external low voltage incoming line cabinet that are arranged on shell Position is answered to connect.Intelligent power monitor shell is small in size, is made using engineering plastics, and other materials also can be used, and uses Cassette type structure is easily installed on power distribution terminal item.
Above-mentioned power sense circuit is separately connected A phase, the B phase, C of the primary voltage of low voltage incoming line cabinet by connecting terminal On phase power supply and zero curve.A611 connecting terminal, B611 connecting terminal, the C611 connecting terminal of power sense circuit are connected to contact The upper end of switch QF1, N connecting terminal connect zero curve.
As shown in Figure 21 (A) (B) (C), power sense circuit include be connected between A phase and zero curve, B phase and zero curve Between, the identical power detecting control circuit in three tunnels between C phase and zero curve, which detects control circuit and intelligence phase Detection control circuit composition in sequence monitor is identical, and difference is only that the position of connection is different: circuit of testing the phase sequence includes point It is not connected between A phase and a phase, the three tunnels detection control circuit between B phase and b phase, between C phase and C phase, and power detecting is electric Road includes the identical power detecting in three tunnels being connected between A phase and zero curve, between B phase and zero curve, between C phase and zero curve Control circuit.Physical circuit is as shown in Figure 25,26,27.The output relay circuit of intelligent power monitor includes being connected to A phase I J1 of relay between zero curve, II J2 of relay being connected between B phase and zero curve, be connected between C phase and zero curve after III J3 of electric appliance.
The power detecting electric operation control circuit figure being connected between A phase and zero curve as shown in the figure, wherein intelligent power monitors The shunt circuit of connecting terminal A611 connection the first capacitor device C1 and first resistor R1 of instrument, the first rectification of shunt circuit connection The anode of diode D1;Connecting terminal a611 passes through the anode of the second rectifier diode of second resistance R2 connection D2, the first rectification Diode D1, the second rectifier diode D2, the 4th rectifier diode D4, the 5th rectifier diode D5 form bridge rectifier, 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 form electric bridge detection circuit, and electric bridge detection circuit is in parallel It is connected to cathode, the 4th rectifier diode D4 of the first rectifier diode D1 and the second rectifier diode D2 of bridge rectifier And the 5th rectifier diode D5 anode between, third diode D3, the second capacitor C2,1 group of the first three-terminal voltage-stabilizing IC circuit At isolation filter voltage regulator circuit, it is connected to the connected one end 3rd resistor R3 and the 4th resistance R4, while being the second operation amplifier Device IC2, third drive module IC3, I J1 of relay provide power supply, detect the output connection second operational amplifier of bridge circuit Positive and negative two input pins of IC2, the output of second operational amplifier IC2 connect the 7th resistance R7, the 7th resistance R7 connection the The output of three capacitor C3 and third drive module IC3 input pin, third drive module IC3 connects I J1 of relay;Above-mentioned electricity Lu Zhong, the first three-terminal voltage-stabilizing IC circuit 1 are preferably that LM7824, second operational amplifier IC2 are preferably LM358, third driving mould Block IC3 is preferably MC1413.
It is connected to power detecting electric operation control circuit figure between B phase and zero curve as shown in the figure, wherein intelligent power monitor Connecting terminal B611 connection the 5th capacitor C5 and the 8th resistance R8 shunt circuit, the shunt circuit connection the 6th rectification two The anode of pole pipe D6;Connecting terminal b611 passes through the anode of the tenth rectifier diode D10 of the 14th resistance R14 connection, and the 6th is whole Flow diode D6, the 7th rectifier diode D7, the 9th rectifier diode D9, the tenth rectifier diode D10 composition bridge rectifier electricity Road, the 9th resistance R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12 form electric bridge detection circuit, electric bridge inspection Slowdown monitoring circuit is connected in the 6th rectifier diode D6 of bridge rectifier and the cathode of the 7th rectifier diode D7 connection, in parallel Between nine rectifier diode D9 and the anode of the tenth rectifier diode D10 connection, the 8th diode D8, the 6th capacitor C6, Four three-terminal voltage-stabilizing IC circuits 4 form isolation filter voltage regulator circuit, are connected to the 9th resistance R9 and the tenth resistance R10 is connected one End, while power supply is provided for the 5th operational amplifier IC5, the 6th drive module IC6, II J2 of relay, detect bridge circuit Positive and negative two input pins of the 5th operational amplifier IC5 of output connection, the output connection the 13rd of the 5th operational amplifier IC5 The 7th capacitor C7 of resistance R13, thirteenth resistor R13 connection and the 6th drive module IC6 input pin, the 6th drive module The output of IC6 connects II J2 of relay;In foregoing circuit, the 4th three-terminal voltage-stabilizing IC circuit 4 preferably LM7824, the 5th operation are put It is preferably MC1413 that big device IC5, which is preferably LM358, the 6th drive module IC6,.
It is connected to power detecting electric operation control circuit figure between C phase and zero curve as shown in the figure, wherein intelligent power monitor Connecting terminal C611 connection the 9th capacitor C9 and the 15th resistance R15 shunt circuit, the shunt circuit connection the 11st The anode of rectifier diode D11;Connecting terminal c611 is passing through the 15th rectifier diode D15 of the 16th resistance R16 connection just Pole, the 10th first-class diode D11, the 12nd rectifier diode D12, the 14th rectifier diode D14, the 15th two poles of rectification Pipe D15 forms bridge rectifier, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th resistance R20 Electric bridge detection circuit is formed, electric bridge detection circuit is connected in the 10th first-class diode D11 of bridge rectifier, the tenth in parallel The anode of the cathode of two rectifier diode D12 connections, the 14th rectifier diode D14 and the 15th rectifier diode D15 connection Between, the 13rd diode D13, the tenth capacitor C10, the 7th three-terminal voltage-stabilizing IC circuit 7 form isolation filter voltage regulator circuit, even It connects in one end that the 17th resistance R17 and the 18th resistance R18 is connected, while being the 8th operational amplifier IC8, the 9th driving mould Block IC9, III J3 of relay provide power supply, and positive and negative two for detecting the 8th operational amplifier IC8 of output connection of bridge circuit are defeated Enter pin, the output of the 8th operational amplifier IC8 connects the 21st resistance R21, the 11st electricity of the 21st resistance R21 connection The output of container C11 and the 9th drive module IC9 input pin, the 9th drive module IC9 connects III J3 of relay;Foregoing circuit In, the 7th three-terminal voltage-stabilizing IC circuit 7 is preferably that LM7824, the 8th operational amplifier IC8 are preferably LM358, the 9th drive module IC9 is preferably MC1413.
Such as the series circuit that the normally-closed contact that Figure 21 (D) is output relay forms, they connect in circuit suitable Position, for receiving the signal of prime relay coil, it include be connected in series I J1 of relay I J1-1 of normally-closed contact, after III J3-1 of normally-closed contact of II J2-1 of normally-closed contact of electric appliance J2, relay J3.No. three relay switch AND gate circuit, referred to as Detect Y.
(F) as shown in figure 21, is the parallel circuit that the normally opened contact of output relay forms, they connect in circuit Suitable position, for receiving the signal of prime relay coil, it includes I J1- of normally opened contact for the relay JI being connected in parallel 2, III J3-2 of normally opened contact of II J2-2 of normally opened contact of relay J2, relay J3, No. three relay switch composition or door Circuit, referred to as detection H.Above-mentioned No. three relay selects HF115F2Z.
When intelligent power monitor works online, low pressure incoming power detects Y circuit output in the case of Everything is fine For " 1 ";Detecting H circuit output is " 1 ", at this point, detector output logic level is " 11 ", intelligent load detection distribution control dress Set normal operation.
When low-tension supply has any one mutually under-voltage, phase shortage, arbitrarily relay discharges all the way, and detector exports logic level For " 01 ", intelligent load detection distribution control device is interrupted, and delay issues transformer fault alarm signal, notice maintenance.
The present invention also provides the distribution substation's transformer energy saving control methods for using above system.
Intelligent load detection distribution control device detects 1# high-voltage board, 2# high-voltage board payload size respectively, preferential automatic throwing Enter low capacity 1# transformer station high-voltage side bus, is combined by the breaker in low-voltage cabinet and contact cabinet, drive the complete of two one group of transformers Section load, if the capacity ratio of two transformers is 1:2, the capacity of operating transformer is the 33% of two transformer capacities at this time Left and right.
When Demand-side power load increase, economical operating point normal more than 1# transformer, load detecting distribution control dress Control high and low voltage switch switching combination is set, 2# transformer station high-voltage side bus, 1# transformer exits, and drives two one group of transformations by 2# transformer Whole loads of device, the capacity of operating transformer is 66% or so of two transformer capacities at this time.
When Demand-side power load continues growing, when economical operating point normal more than 2# transformer, load detecting distribution Control device controls the combination of high and low voltage switch switching, and 1# transformer also assists in operation, and at the same time, network interconnecting circuit disconnects, and two Platform transformer while fanout operation, the capacity of operating transformer is the 100% of two transformer capacities at this time.
When Demand-side power load is reduced, when lower than the normal economical operating point of two transformers, load detecting distribution control Device control high and low voltage switch switching combination processed, 1# transformer is out of service, drives two one group of transformers by 2# transformer All loads, the capacity of operating transformer is 66% or so of two transformer capacities at this time.
When Demand-side power load continues to reduce, when lower than the normal economical operating point of 2# transformer, load detecting distribution Control device controls the combination of high and low voltage switch switching, and 1# transformer puts into operation, and 2# transformer is out of service, by 1# transformer belt Whole loads of dynamic two one group of transformers, the capacity of operating transformer is 33% or so of two transformer capacities at this time.
In cycles, realize that entire distribution substation is unattended, switchgear automatic energy storage, combined floodgate, separating brake, intelligent transformer section Electricity operation.
In the above process, intelligent power monitor obtains the electricity of the inlet wire in 1# low voltage incoming line cabinet and 2# low voltage incoming line cabinet respectively The information of the three phase mains of pressure carries out onsite alarming if three phase mains Information abnormity simultaneously and reports to remote worker It is alert.
Intelligent phase sequence monitor detect respectively the interconnection switch two sides in low voltage liaison net cabinet two-way power supply whether phase sequence one It causes, it is inconsistent, it carries out onsite alarming simultaneously and alarms remote worker.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art, Without depart from that overall concept of the invention, several changes and improvements can also be made, these also should be considered as of the invention Protection scope.

Claims (6)

1. distribution substation's transformer energy saving control system, it is characterised in that: including the N group distribution transformer being arranged in distribution substation Group, N are not less than 1, and every group of distribution transformer group includes the 1# high-voltage board and 2# high-voltage board connecting with high voltage bus;It is described High-voltage switch gear is provided in 1# high-voltage board and 2# high-voltage board;Intelligent load inspection is connected between the 1# high-voltage board and 2# high-voltage board Survey distribution control device;
High-tension current inductor leading-out terminal in 1# high-voltage board detects distribution control device connecting terminal with intelligent load and connect;
High-tension current inductor leading-out terminal in 2# high-voltage board detects distribution control device connecting terminal with intelligent load and connect;
1# transformer is connected on the 1# high-voltage board, 1# transformer connects 1# low-voltage cabinet, and 1# low-voltage cabinet connects low by busbar connector I Press compensating cabinet I, low-pressure line-outgoing cabinet I, the connection of low-pressure line-outgoing cabinet I load I;
2# transformer is connected on the 2# high-voltage board, 2# transformer connects 2# low-voltage cabinet, and 2# low-voltage cabinet is connected by busbar connector II Low-voltage compensation cabinet II, low-pressure line-outgoing cabinet II, the connection of low-pressure line-outgoing cabinet II load II;It is all provided in the 1# low-voltage cabinet and 2# low-voltage cabinet It is equipped with low pressure incoming breaker;
It further include low voltage liaison net cabinet, the low voltage liaison net cabinet connects load by the connection of busbar connector I load I, by busbar connector II Ⅱ;Low voltage liaison net breaker is set in the low voltage liaison net cabinet;
Intelligent load detection distribution control device detects the payload size that 1# high-voltage board connects with 2# high-voltage board automatically, just presses off Off status, control high-voltage board in 1# high-voltage switch gear, 2# high-voltage switch gear, 1# low pressure incoming breaker, 2# low pressure incoming breaker, Continuous electric shaft switching combination of the low voltage liaison net breaker between two transformers, realizes that distribution substation is unattended;
The intelligent load detection distribution control device includes the load inspection for detecting distribution substation 1# transformer and 2# transformer load Survey metering units;
The 1# low-voltage cabinet and 2# low-voltage cabinet are separately connected an intelligent power monitor;Intelligent power monitor detects inlet wire electricity The information of the three phase mains of pressure, and send information to intelligent load detection distribution control device;
The intelligent power monitor includes the power sense circuit for detecting the primary voltage of low voltage incoming line cabinet, power sense circuit The A phase, B phase, C phase power supply and zero curve of primary voltage are separately connected by connecting terminal;
The intelligent phase sequence monitor of connecting detection two-way power phase on the low voltage liaison net cabinet;
It is described intelligence phase sequence monitor include
Detect the circuit of testing the phase sequence of the interconnection switch two sides power phase in low voltage liaison net cabinet;
The misphase exclusive circuit being connected in interconnection switch closing coil circuit;
The misphase warning circuit being connected in interconnection switch alarm relay circuit;
The intelligent load detection distribution control device further include:
Receive the programmable display control unit of the signal of load detecting metering units detection;The programmable display control unit Including single-chip microcontroller and the LED display unit being connect with single-chip microcontroller;
Receive the load assignment control of programmable display control unit data;
The operating status display unit of display load assignment control operating status;
The load assignment control includes control circuit, and control circuit is sequentially connected operation by inputting photoelectric isolation module Status display unit and input terminal, the control circuit pass sequentially through output photoelectric isolation module connected with relay module it is defeated Terminal out, the LED display unit that the single-chip microcontroller of the programmable display control unit is connected by LED drive circuit;
The load detecting metering units include two processors, and each processor passes through a current signal isolator connection One transformer.
2. distribution substation's transformer energy saving control system according to claim 1, it is characterised in that: it further include warning device, The warning device includes the substation central signal remote alarming device communicated with distal end, the substation central signal Remote alarming device is communicated by remote communication module with distal end.
3. distribution substation's transformer energy saving control method of the application described in any item systems of claim 1 ~ 2, it is characterised in that: institute Setting N group distribution transformer group in distribution substation is stated, every group of distribution transformer group includes: 1# high-voltage board and 1# high-voltage board The 1# transformer of connection, the 1# low-voltage cabinet connecting with 1# transformer pass through the low-voltage compensation cabinet that busbar connector I is connect with 1# low-voltage cabinet I, low-pressure line-outgoing cabinet I, the connection of low-pressure line-outgoing cabinet I load I;2# high-voltage board, the 2# transformer being connect with 2# high-voltage board, with 2# transformation The 2# low-voltage cabinet of device connection passes through low-voltage compensation cabinet II, the low-pressure line-outgoing cabinet II that busbar connector II is connect with 2# low-voltage cabinet, and low pressure goes out The connection of line cabinet II load II;It further include low voltage liaison net cabinet, low voltage liaison net cabinet loads I by the connection of busbar connector I, passes through busbar connector II Connection load II;
To every group of distribution transformer group in above-mentioned distribution substation, the size of load I and load II is obtained respectively, it is big according to load It is small, control low pressure incoming breaker in 1# high-voltage board and high-voltage switch gear, 1# low-voltage cabinet and 2# low-voltage cabinet in 2# high-voltage board, The low voltage liaison net breaker in low voltage liaison net cabinet being connected with two low-voltage cabinets uninterrupted electric shaft between two transformers is thrown Combination is cut, the working capacity of 1# transformer and 2# transformer is converted.
4. distribution substation's transformer energy saving control method according to claim 3, it is characterised in that: two height of the control High-voltage switch gear in pressure cabinet, the low pressure incoming breaker in two low-voltage cabinets, in the low voltage liaison net cabinet that is connected with two low-voltage cabinets The uninterrupted electric shaft switching combination between two transformers of low voltage liaison net breaker method are as follows:
To the 2# transformer of 1# transformer and large capacity, II size of load I and load is obtained respectively in real time, and real-time judge is whole The relationship of the normal economical operating point of payload size and 1# transformer and 2# transformer:
(1) if economical operating point of the real time load size without departing from 1# transformer, 1# transformer station high-voltage side bus, and meanwhile it is low by 1# Press cabinet and low voltage liaison net cabinet, II operation of band dynamic load I and load;
(2) if load increases, real time load size exceeds the economical operating point of 1# transformer, but without departing from the warp of 2# transformer Help operating point, then 1# transformer exits, 2# transformer station high-voltage side bus, while passing through 2# low-voltage cabinet and low voltage liaison net cabinet, band I He of dynamic load II operation of load;
(3) if load increases, real time load size exceeds the economical operating point of 2# transformer, then 1# transformer and 2# transformer It puts into operation simultaneously;
(4) if load is reduced, real time load size exceeds the economical operating point of 1# transformer, but without departing from the warp of 2# transformer Help operating point, then 1# transformer is out of service, 2# transformer station high-voltage side bus, while passing through 2# low-voltage cabinet and low voltage liaison net cabinet, drives negative Carry I and II operation of load;
(5) if load is reduced, real time load size is lower than the economical operating point of 2# transformer, but without departing from the warp of 1# transformer Help operating point, then 2# transformer exits, 1# transformer station high-voltage side bus, while passing through 1# low-voltage cabinet and low voltage liaison net cabinet, band I He of dynamic load II operation of load.
5. distribution substation's transformer energy saving control method according to claim 3, it is characterised in that: controlling two high pressures High-voltage switch gear in cabinet, the low pressure incoming breaker in two low-voltage cabinets, in the low voltage liaison net cabinet that is connected with two low-voltage cabinets Low voltage liaison net breaker between two transformers uninterrupted electric shaft switching combine during, while respectively obtain 1# low pressure The information of the three phase mains of cabinet and the primary voltage in 2# low-voltage cabinet carries out live report simultaneously if three phase mains Information abnormity It warns and alarms remote worker.
6. distribution substation's transformer energy saving control method according to claim 3, it is characterised in that: controlling two high pressures High-voltage switch gear in cabinet, the low pressure incoming breaker in two low-voltage cabinets, the low voltage liaison net breaker being connected with two low-voltage cabinets During uninterrupted electric shaft switching combines between two transformers, while the contact detected in low voltage liaison net cabinet respectively is opened Whether phase sequence is consistent for the two-way power supply of pass two sides, inconsistent, carries out onsite alarming simultaneously and reports to remote worker Alert, unanimously then low voltage liaison net cabinet carries out energy storage, closes a floodgate.
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