CN107345978A - The packaged type of power plant or intelligent substation controls power supply and control method - Google Patents

The packaged type of power plant or intelligent substation controls power supply and control method Download PDF

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Publication number
CN107345978A
CN107345978A CN201710486891.XA CN201710486891A CN107345978A CN 107345978 A CN107345978 A CN 107345978A CN 201710486891 A CN201710486891 A CN 201710486891A CN 107345978 A CN107345978 A CN 107345978A
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China
Prior art keywords
power supply
output
control
voltage
power
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CN201710486891.XA
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CN107345978B (en
Inventor
戴宪滨
戴菁
戴鹏
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Shenyang Institute of Engineering
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Shenyang Institute of Engineering
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations

Abstract

The present invention provides the packaged type control power supply and control method in a kind of power plant or intelligent substation, is related to the control technology field of power system.The control power supply includes exchange lead-in clamp, alternating-current switch, monitoring module, power module, insulating monitor, alarm, dc switch, D.C. voltmeter, DC ammeter, current sensor, voltage sensor and direct current output binding post, monitoring module receives host computer instruction, input voltage is automatically adjusted using Adaptive fuzzy-PI control and Repetitive controller combined combined type digital control approach, power module output steady dc voltage is controlled, whether insulating monitor automatic detection direct current output loop is grounded or insulate intact.The present invention uses integrated, modular construction; with digital intelligent monitoring, various defencive functions and insulating monitoring and alarm function; draw scene and connect input power conveniently, be effectively improved control power supply dynamic property, the power system security steady-state operation for applying it.

Description

The packaged type of power plant or intelligent substation controls power supply and control method
Technical field
The present invention relates to the control technology field of power system, more particularly to a kind of power plant or intelligent substation can Movable type control power supply and control method.
Background technology
Newly-built or enlarging power plant and intelligent substation, to ensure its safe and stable operation, put into Operation of Electric Systems Before, it is necessary to verification electric secondary circuit and equipment (protective relaying device, automatic safety device, control loop, letter in production scene Number loop, automatic adjustment circuit) integrity.Above-mentioned electric secondary circuit is required to control power supply to drive with equipment, and shows There is control power supply typically there are two types.The first, is room using power plant and the dc source of transformer station as control power supply Interior fixed installation, the cabinet type structure of metal framework, main devices are batteries, and its volume 2360 × 800 × 550, weight reaches More than 500kg；Every time before experiment, will jump lead to scene.Second, special control power supply, main devices are by direct current Power supply instrument, operational control instrument and three big independent sector of oscillograph composition, are split-type structural；, will be existing every time before experiment Wiring between three big devices is interconnected, carries out integrity test by field.
Many problems be present in existing Control experiment power supply.
The problem of the first control power supply is present is as follows：1. batteries are made up of more piece battery series and parallel, often it is in " floating charging running status ", due to it is every section battery charge and discharge voltage and current it is uneven, often result in accumulator plate breakdown and Damage, so, it is unreliable, operation it is big with maintenance workload；2. it is serious often to save battery heating, shell is sealing structure, body Above again without heat dissipation equipment, if can not radiate in time, there is the danger of blast；In addition, often the plastic casing of section battery is because heated, meeting Peculiar smell is produced, environment is polluted；3. to " relay protection and automatics equipment, the operating mechanism of switch, the main transformer at scene When the secondary devices such as depressor tap_changing equipment " are tested, to draw from the straight-flow system in power plant and transformer station and connect experiment power supply, Both it is inconvenient, but because jump lead line is longer, voltage landing is big, causes supply voltage off quality；4. if test loop is sent out Raw DC earthing short circuit, can cause the straight-flow system busbar voltage of power plant and transformer station to decline, cause " monitoring, protection with from Dynamic device " power supply of losing the job so that power system is run under without monitoring, unprotect situation, the peace of entail dangers to power system Row for the national games；5. during secondary circuit equipment test, if of ac misconnection enters DC experiment loop, of ac can enter through test loop Power plant and the straight-flow system of transformer station, the protective relaying device for causing other intervals is malfunctioned, causes large-area power-cuts, sternly Grid disconnection during weight, influences power system security stable operation.
The problem of second of control power supply is present is as follows：1. from traditional transistor scale-up version dc source as control Power supply, output voltage is adjusted manually, output characteristics is poor, and DC ripple is big, and output voltage is big by load effect, and conveyance capacity is weak； Power supply man-machine interface is poor, and defencive function is simple, naked supervision and distant place communication function；Power work efficiency is low, and weight is big, no It is adapted to work on the spot；2. control power supply uses soft switch technique, but there is the drawbacks of many in soft switch technique, such as：More rectifications Wired in parallel is run, feedback control loop increase so that the stability of straight-flow system is impacted；3. band impact load capacity is poor；Hair When the primary cut-out of power plant and intelligent substation and protective relaying device transmission test, due to primary cut-out point, close a floodgate Speed fast (Millisecond) loads for impact, and the output voltage fluctuation of power supply is larger, influences primary cut-out and is filled with relay protection Put the accuracy of transmission test；4. control power supply output DC voltage adjusting range narrow, it is impossible to meet DC voltage (85-110) UNDuring change, secondary loop in power system equipment test voltage request；5. power supply is controlled typically without DC insulation monitoring function；I.e. Make have this function, be grounded simultaneously when direct current the two poles of the earth (positive and negative electrode) occurs for test loop, i.e., when symmetry insulation reduces, it insulate Watchdog circuit reaction is insensitive, or refuses to submit police；6. even if the controller of power supply is using Repetitive controller --- digital control side Formula, but dynamic response is slow；Although Repetitive controller can ensure power supply, output waveform accurate tracking gives, what Repetitive controller obtained Control instruction is not to export immediately, but stagnant the latter reference cycle just exports；If control power source internal disturbs, eliminate The influence to output is disturbed at least to want a reference cycle, in a cycle that interference occurs, power-supply controller of electric is for interference Any adjustment effect is not produced, has had a strong impact on the dynamic property of control power supply.
The content of the invention
The defects of for prior art, the present invention provide the packaged type control electricity in a kind of power plant or intelligent substation Source and control method, for power plant and intelligent substation, control electricity when being tested as verification secondary circuit Plant in good condition Source so that scene, which is drawn, connects input power conveniently, and the adjustment of electric power output voltage has manually and automatically two ways, adjusting range Width, meet test requirements document；Supply unit hardware circuit uses integrated, modularization topological structure, small volume, in light weight, and has There are digital intelligent monitoring function, various defencive functions and insulating monitoring and alarm function, can effectively improve the dynamic of control power supply State property energy, the power system security steady-state operation for applying it.
On the one hand, the present invention provides the packaged type control power supply in a kind of power plant or intelligent substation, including exchange Lead-in clamp, alternating-current switch, monitoring module, power module, insulating monitor, alarm, dc switch, DC voltage Table, DC ammeter, current sensor, voltage sensor and direct current output binding post；
The first end connection exchange lead-in clamp of the alternating-current switch, for connecting 220V alternating current input power supplyings；Power supply Module uses ER22005/S models, and the input of power module is all connected to exchange with the input voltage collection terminal of monitoring module Second end of switch, the control receiving terminal of the power module connect the driving of monitoring module by two switch controlled wires Control terminal, power module are used to export steady dc voltage under the control of monitoring module；The input of the voltage sensor End is connected in parallel on the output end of power module, the output voltage collection terminal of the output end connection monitoring module of voltage sensor；It is described Current sensor and DC ammeter are sequentially connected in series on a wire between the output end of power module and dc switch, electricity The output current collection terminal of flow sensor TA output end connection monitoring module, the other end connection direct current output of dc switch connect Terminal；The input and D.C. voltmeter of the insulating monitor are connected in parallel on the output end of power module, the alarm It is connected between an output end of insulating monitor and 220V ac working power supplies, another output of insulating monitor End is directly connected with 220V ac working power supplies；The alarm is used for bad in control power supply direct current output loop generation ground connection Or during insulation reduction, send alarm light and acoustic signal；The voltage sensor and current sensor are Hall sensor；
The monitoring module is used for the instruction for receiving power plant or intelligent substation host computer, and according to the instruction of host computer Input voltage is automatically adjusted, the state of monitoring DC loop in real time is additionally operable to, sends instruction, quick lock when a failure occurs Power module exports DC loop, and it is zero to make to control power supply VD, protection control power-supply device；The monitoring module Including display unit and control unit and its peripheral circuit；The display unit is liquid crystal display, and the connection of its input controls Unit, the numerical value for the AC-input voltage of real-time display monitoring module collection, VD and average anode current； Described control unit is microprocessor, for reading the voltage and current value of control power supply output loop, by sampled value with giving Voltage base value compare, the high-frequency converter in driving power module, make power output end obtain steady dc voltage；Institute The peripheral circuit for stating control unit is adopted including accessory power supply, input voltage sample circuit, output voltage sampling circuit, output current Sample circuit, switch tube driving circuit and RS232 interface circuit；
The accessory power supply uses silicon commutating power supply device, other composition devices and electricity of its output end connection monitoring module Flow sensor and voltage sensor, for providing DC supply to these devices；
The input voltage sample circuit, output voltage sampling circuit and output current sample circuit are respectively used to exchange The analog quantity of input voltage, VD and average anode current is converted into digital quantity, is handled for microprocessor；Institute It is identical with the circuit structure of output voltage sampling circuit to state input voltage sample circuit, its input is respectively as monitoring module Input voltage collection terminal and output voltage collection terminal, its output end are connected with microprocessor；The output current sample circuit Output current collection terminal of the input as monitoring module, be connected with the output end of current sensor, output current sampling electricity The output end on road is connected with microprocessor；
Drive control end of the output end of the switch tube driving circuit as monitoring module, connect the control in power module Receiving terminal processed, the PWM square wave output ends of the input connection microprocessor of switch tube driving circuit, in driving power module Switching tube work, and switch tube carry out over-current over-voltage protection；
The RS232 interface circuit is connected between microprocessor and power plant or the host computer of intelligent substation, is used for Realize the communication between control power supply and host computer；
The insulating monitor is used for the positive and negative electrode voltage-to-ground size in automatic detection direct current output loop, judges straight Flow back to whether road is grounded or insulate intact；Insulating monitor include two DC input terminals, 1 and 2, two switching switch SB, Resistance R1, R2, R3, R4, R5, R6, voltmeter V, rectifier bridge U, light-coupled isolation device IC1, operational amplifier IC2, miniature relay Device ZJ and triode VT；DC input terminal 1 and 2 is connected with the lead-out terminal VOUT+ and VOUT- of power module respectively；Two Individual switching switch SB one end connects DC input terminal 1 and 2 respectively, and the other end is grounded after being all connected with voltmeter V；Resistance R1, It is connected in parallel on after R2 series connection between DC input terminal 1 and 2；Rectifier bridge U two DC terminals connect resistance R1, R2 centre respectively Node and ground connection, two exchange end connection light-coupled isolation device IC1 two inputs, two of light-coupled isolation device IC1 are defeated Go out the normal phase input end that end connects dc source VCC and operational amplifier IC2 respectively；Operational amplifier IC2 normal phase input end It is grounded after connecting resistance R4 simultaneously, dc source VCC, fortune is connected after operational amplifier IC2 inverting input connection resistance R3 Calculate amplifier IC2 inverting input while be grounded after connecting resistance R5；Operational amplifier IC2 output end connection resistance R6 mono- Hold, resistance R6 other end connecting triodes VT base stage, connect after triode VT colelctor electrode connection midget relay ZJ coil Meet dc source VCC, the output end of midget relay ZJ moving together contact terminal 3 and terminal 4 as insulating monitor.
Preferably, the packaged type of power plant or intelligent substation control power supply also includes surge suppressor；Surge presses down The AC220V ac input ends that device processed is used to prevent from controlling power supply produce overvoltage surge, the surge suppressor leads to because of thunderbolt The second end that supplementary AC switch is connected to the alternating-current switch is crossed, the earth terminal of surge suppressor is grounded.
Preferably, the packaged type of power plant or intelligent substation control power supply also includes power case, for carrying And other composition devices of control power supply are installed, including casing, drive end bearing bracket, case lock, installation panel, rear-end plate and handle；Institute Cabinet shell ground connection is stated, the case is locked on drive end bearing bracket and casing joint；The installation panel is located at the rear side of drive end bearing bracket, peace Fill embedded installation exchange lead-in clamp, alternating-current switch, monitoring module, power module, insulating monitor, alarm on panel Device, dc switch, D.C. voltmeter, DC ammeter, surge suppressor, direct current output binding post and ground terminal, it is described to connect Ground terminal is used for the earth terminal for connecting surge suppressor；The rear-end plate is structure as a whole with casing, embedded on rear-end plate Formula is installed with 2 desk fans；The handle is on a side of casing.
Preferably, the peripheral circuit of the monitoring module also includes fan drive circuit, and its output end is as temperature control End, connect 2 desk fans on power case, the PWM square waves output end connection of its input and microprocessor, for drive control Fan carries out radiating temperature adjustment to the power device in control power supply.
Preferably, the power module is arranged in installation panel by power module support, the power module support Including two bearings, support panel and position limiting structure, described two bearings are opening two symmetrical U-shaped bottom seats staggered relatively, The lower end of two U-shaped bottom seats is respectively equipped with 2 bracket base bolts, is fixed for the installation panel with power case；The branch Support panel is fixed at the upper ends of two U-shaped bottom seats, and the position limiting structure is two parallel and be fixed at the support panel On angle bar, for left and right fixed power source module.
Preferably, the casing and the material of installation panel are 2.0mm thickness aluminium sheets, and casing is through spray treatment；In drive end bearing bracket Serve as a contrast hemispherical black sponge, and liner seal；Case lock is provided with four, respectively symmetrically located at the two of drive end bearing bracket and casing joint Side.
On the other hand, the present invention also provides a kind of using the packaged type of above-mentioned power plant or intelligent substation control electricity The method that source is controlled to power plant or intelligent substation power supply, including automatically control and adjust two ways manually；
In manual regulative mode, D.C. voltmeter registration and default ginseng of the staff according to power module outlet Examine output voltage to compare, judge whether output voltage needs to adjust, when the difference of actual output voltage and reference output voltage surpasses , it is necessary to adjust output voltage when crossing default error, often by " ↓ " button on primary power source module faceplate, control the direct current of power supply defeated Going out voltage reduces 1V, often by once " ↑ " button, controls the VD of power supply to raise 1V；
In automatic control mode, the host computer of power plant or intelligent substation is by RS232 interface circuit to monitoring mould Block sends instruction, monitoring module using the combined combined type digital control approach of Adaptive fuzzy-PI control and Repetitive controller, Improve the steady-state characteristic of control power supply output using Repetitive controller, control power supply output is improved using Adaptive fuzzy-PI control Dynamic characteristic, specific method is：
Step 1：Set reference output voltage Uset and default error e；
Step 2：Voltage sensor monitors the output voltage Ut of power module outlet in real time, is calculated in monitoring module defeated Go out voltage Ut and reference output voltage Uset error amount e (k), wherein k represents k-th of sampled point, k=1,2 ..., K, and K=is adopted Sample speed/50；
Step 3：Whether error in judgement value e (k) is more than default error e；If so, then control power supply is in dynamic change shape State, perform step 4；If it is not, then control power supply is in steady-state operating condition, step 5 is performed；
Step 4：Into Adaptive fuzzy-PI control mode, calculated in being controlled to adjust to error amount e (k) and its with the last time Error amount e (k-1) difference e c (k) be blurred, table look-up carry out fuzzy reasoning, determine proportionality coefficient Δ Kp and integral coefficient Δ Ki, Fuzzy Calculation is carried out, PI adjustment, return to step 2 are carried out to control electric power output voltage immediately；Wherein ec (k)=e (k)- E (k-1), as k=1, ec (k)=e (k)；
Step 5：Into Repetitive controller mode, in a reference cycle N, step 2 and step 3 are repeated, is obtained each The error amount e (k) of sampled point, after the delay in a reference cycle terminates, repetitive controller is to control power supply to output voltage Ut carries out the compensation adjustment of corresponding phase and amplitude, updates output voltage, the output voltage after compensation is Uo (k)=0.95Uo (k-N)+e (k), wherein, Uo (k) represents the output voltage after compensation, and Uo (k-N) represents the output voltage after k-N compensation, N Represent periodic sampling umber of beats.
Preferably, the default error e is set as power module outlet rated voltage UN5%.
As shown from the above technical solution, the beneficial effects of the present invention are：A kind of power plant provided by the invention or intelligence The packaged type control power supply and control method of transformer station, for power plant and intelligent substation, as verification monitoring device, The secondary returning such as control device, relay protection and automatics equipment, the operating mechanism of switch, main transformer tap_changing equipment Control power supply when pipeline equipment integrity is tested so that scene, which is drawn, connects input power conveniently, and electric power output voltage adjustment has hand Dynamic and automatic two ways, adjusting range is wide, can realize (30-150) %UNScope adjusts, and meets test requirements document；Supply unit Hardware circuit uses integrated, modularization topological structure, small volume, in light weight, carrying easy to remove, and has digital intelligent Monitoring function, various defencive functions and insulating monitoring and alarm function, the dynamic property of control power supply is can effectively improve, make it should Power system security steady-state operation.Concrete function is as follows：
(1) intelligent monitoring function：1. automatic blocking function, monitoring module detects that In situ DC test loop is broken down When, instruction is sent, quick lock power module output loop, it is zero to make to control power supply VD, protects control electricity Source device；2. radiator fan automatic control function, monitoring module is real to controlling the average anode current of power supply to carry out comprehensive detection The automatic start-stop control of existing fan, reaches good heat radiating purpose；3. communication function, utilize the communication interface of monitoring module, control The VD and current value of power supply processed, protection and warning information are uploaded to the upper of power plant and monitoring system of electric substation Machine, and can receive the instruction that host computer passes down, and control is realized to control power supply；
(2) defencive function：1. ac input circuit overvoltage, low-voltage, voltage circuit breaking protection, automatic blocking control Electric power output voltage and electric current, shutdown alarm are automatic to recover after voltage is normal；2. output loop overvoltage, low-voltage, short circuit Protection, power supply output current limiting is controlled, is recovered automatically after failture evacuation；3. overtemperature protection, direct current of the monitoring module to control power supply Output current carries out comprehensive detection, realizes the automatic start-stop control of fan, reaches good heat radiating purpose, when detecting control power supply When temperature is too high, shutdown alarm is automatic after temperature is normal to recover；4. lightning protection, in control power supply AC220KV exchange inputs End, 1 surge suppressor is installed, can be effectively prevented from because of overvoltage caused by lightning surge.
(3) DC loop insulating monitoring and alarm function：When ground connection or insulation reduction occur for In situ DC test loop, absolutely Edge supervisory device acts, and its moving together contact closure, starts alarm, and alarm sends light, audible warning, realizes automatic The direct current output loop insulation integrity of monitoring control power supply.
Brief description of the drawings
Fig. 1 is power case structural representation provided in an embodiment of the present invention；
Fig. 2 is rear-end plate schematic diagram provided in an embodiment of the present invention；
Fig. 3 is each device layout schematic diagram in installation panel provided in an embodiment of the present invention；
Fig. 4 is power module supporting structure schematic diagram provided in an embodiment of the present invention；
Fig. 5 is control power supply wiring figure provided in an embodiment of the present invention；
Fig. 6 is that monitoring module circuit provided in an embodiment of the present invention connects block diagram；
Fig. 7 is voltage sampling circuit schematic diagram provided in an embodiment of the present invention；
Fig. 8 is current sampling circuit schematic diagram provided in an embodiment of the present invention；
Fig. 9 is switch tube driving circuit schematic diagram provided in an embodiment of the present invention；
Figure 10 is fan drive circuit schematic diagram provided in an embodiment of the present invention；
Figure 11 is RS232 level shifting circuits schematic diagram provided in an embodiment of the present invention；
Figure 12 is insulating monitor circuit theory diagrams provided in an embodiment of the present invention；
Figure 13 is the digital control flow chart of automatic combined type of power control method provided in an embodiment of the present invention.
In figure：101st, casing；102nd, drive end bearing bracket；103rd, case is locked；104th, installation panel；105th, rear-end plate；106th, handle； 107th, fan；108：Fixing bolt；109th, U-shaped bottom seat；1010th, support panel；1011st, bracket base bolt；1012nd, angle bar.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
The packaged type control power supply in a kind of power plant or intelligent substation, including power case and located at power machine Exchange lead-in clamp, alternating-current switch, monitoring module, power module, insulating monitor, alarm, dc switch in case, D.C. voltmeter, DC ammeter, current sensor, voltage sensor, surge suppressor, ground terminal and direct current output wiring Post.
Power case, for carry and install control power supply other composition devices, as shown in figure 1, including casing 101, Drive end bearing bracket 102, case lock 103, installation panel 104, rear-end plate 105 and handle 106.The material of casing 101 is 2.0mm thickness aluminium Plate, through spray treatment, with stainless steel handware connects hinge, to increase the fixing intensity of casing, shell resistance to compression, intensity is high, again Amount and light, casing 101 shell reliable ground good to electrical equipment electrostatic shield effect in cabinet, it is ensured that field test personnel pacify Entirely.The liner hemispherical black sponge (ethylene-vinyl acetate copolymer is novel environment friendly rubber-plastics material) of cabinet drive end bearing bracket 102, and Liner seal, there is good antidetonation, heat-insulated, moistureproof, anticorrosive, good dustproof effect.Case lock 103 is located at drive end bearing bracket 102 with the joint of casing 101, in the present embodiment, drive end bearing bracket 102 installs four locks, respectively symmetrically located at drive end bearing bracket 102 and case The both sides of the joint of body 101, during field test, drive end bearing bracket and casing convenient disassembly.Installation panel 104 is located at drive end bearing bracket 102 Rear side, it is 2.0mm thickness aluminium sheets, in the circle metal angle set installed in power case inwall, is realized with 4 fixing bolts 108 The fixation of installation panel 104 and metal angle.Rear-end plate 105 is structure as a whole with casing 101, is made up of 2.0mm thickness aluminium sheets, after It is embedded on end casing 105 to be installed with 2 desk fans 107, it is fixed on rear end cap by 4 fixing bolts 108 per desk fan On plate 105, as shown in Fig. 2 the specifications and models of fan are XHA25489B2.Handle 106 is located on a side of casing 101, Carrying easy to remove.
Embedded installation exchange lead-in clamp L and N, alternating-current switch QF and QF2, monitoring module, power supply in installation panel 104 Module, insulating monitor, alarm FM, dc switch QF1, D.C. voltmeter PV, DC ammeter PA, current sensor TA, voltage sensor TV, surge suppressor F1, direct current output binding post "+", "-" and ground terminal, the layout of these devices is such as Shown in Fig. 3.Exchange lead-in clamp L and N respectively green and black, model JXZ-1/1；2 alternating-current switch QF and QF2, Model S262-C16/2P-AC；Surge suppressor F1, model SPNSA100/2P；Power module, model ER22005/S； 1 red alarm device FM, model LY33-22；D.C. voltmeter and each 1 piece of ammeter, model be respectively ZF5135-V and ZF5135-A；Voltage sensor TV and current sensor TA is Hall sensor, and model is respectively HNV025A, HNC025A； Direct current output binding post "+" and "-" respectively red and black, model JXZ-1/1；Dc switch QF1, model S262- C10/2P-DC；Ground terminal is yellow, model JXZ-1/1.
Power module is arranged in installation panel 104 by power module support, and power module support is as shown in figure 4, branch Frame is made up of 2.0mm thickness aluminium sheets, including two bearings, support panel 1010 and position limiting structure, and two bearings, which are that opening is relative, to be put The two symmetrical U-shaped bottom seats 109 put, the lower end of two U-shaped bottom seats 109 are respectively equipped with 2 bracket base spiral shells 1011, for electricity The installation panel 104 of source cabinet is fixed；Support panel 1010 is fixed at the upper end of two U-shaped bottom seats 109；Position limiting structure is two Root is parallel and the angle bar 1012 that is fixed on support panel, is made up of 1.0mm thickness aluminium sheets, for left and right fixed power source module.
The wiring diagram of power supply is controlled as shown in figure 5, alternating-current switch QF first end (QF terminal 1 and terminal 2) uses BVR-2.5mm2Black wire connection exchange lead-in clamp L and N, for connecting 220V alternating current input power supplyings, power module BVR- is respectively adopted in the input voltage collection terminal of input ACL, ACN and monitoring module (terminal 2 and terminal 1 of monitoring module) 2.5mm2And BVR-1.0mm2Black wire is connected to alternating-current switch QF the second end (QF terminal 3 and terminal 4), power module For exporting steady dc voltage under the control of monitoring module.Surge suppressor F1 switchs QF2 connections by supplementary AC To alternating-current switch QF the second end, surge suppressor F1 earth terminal and ground terminal use BVR-2.5mm2Yellow and green wire Connection, exchange lead-in clamp L and N use BVR-2.5mm between alternating-current switch QF2 terminals 1 and terminal 2 respectively2Black Wire connects, and alternating-current switch QF2 terminals 3 and terminal 4 use BVR- between surge suppressor F1 terminals 1 and end 2 respectively 2.5mm2Black wire connects.The control receiving terminal 485A and 485B of power module passes through two switch controlled wires L1 and L2 The drive control end (terminal 3 and terminal 4 of monitoring module) of monitoring module is connected to, realizes and control electric power output voltage is adjusted Whole, defencive function, two switch controlled wires L1 and L2 are BVR-1.0mm2Black wire.Voltage sensor TV input It is connected in parallel on the output end VOUT+ and VOUT- of power module, the output voltage of voltage sensor TV output end connection monitoring module Collection terminal (terminal 10 of monitoring module), using BVR-1.0mm2Black wire.Current sensor TA and DC ammeter PA It is sequentially connected in series on the wire between the output end VOUT+ and dc switch QF1 of power module terminal 1, current sensor TA Output end connection monitoring module output current collection terminal (terminal 9 of monitoring module), power module terminal VOUT- and QF1 Terminal 2 is directly connected to, the dc switch QF1 other end (QF1 terminal 3 and terminal 4) connection direct current output binding post "+" and "-", using BVR-2.5mm2Black wire.During field test, direct current output binding post "+" and "-" and test load (scene Secondary device) it is connected.Insulating monitor JCJ input (JCJ terminal 1 and terminal 2) and D.C. voltmeter PV uses BVR-1.0mm2Output end VOUT+ and VOUT- of the black conductor in parallel in power module.Alarm FM is connected to insulating monitoring dress A JCJ output end (JCJ terminal 4) is put between 220V ac working power supplies, another of insulating monitor JCJ is defeated Go out end (JCJ terminal 3) to be directly connected to 220V ac working power supplies, using BVR-1.0mm2Black wire, alarm FM For when controlling power supply direct current output loop that bad ground connection or insulation reduction occurs, sending alarm light and acoustic signal.Wind Fan M is connected to the temperature control end (terminal 11 and terminal 12 of monitoring module) of monitoring module, for giving control power supply heat sinking.
Monitoring module is used to receiving the instruction of power plant or intelligent substation host computer, and according to the instruction of host computer to defeated Enter voltage to automatically adjust, be additionally operable to the state of monitoring DC loop in real time, send instruction, quick lock power supply when a failure occurs Module exports DC loop, and it is zero to make to control power supply VD, protection control power-supply device, realizes control power supply output The function of parameter measurement and voltage adjustment, protection, temperature control and communication.Monitoring module circuit connection block diagram as shown in fig. 6, Including display unit and control unit and its peripheral circuit.Display unit is liquid crystal display, for real-time display monitoring module The numerical value of the AC-input voltage of collection, VD and average anode current.Control unit is microprocessor, for reading The voltage and current value of control power supply output loop is taken, sampled value is compared with given voltage base value, driving power module In high-frequency converter, make power output end obtain steady dc voltage.The peripheral circuit of control unit include accessory power supply, Input voltage sample circuit, output voltage sampling circuit, output current sample circuit, switch tube driving circuit, fans drive electricity Road and RS232 interface circuit.
In the present embodiment, microprocessor model is TMS320F2812, LCD types HY-12864.Liquid crystal The maximum indication range for showing device screen is 128*64, two pieces of HD61202 LCD Controller and Drivers built in display.Liquid crystal Show device HY-12864 pin " IOP3,4,5,6,7, IOPB0-IOPB7 " pin with microprocessor TMS320F2812 respectively " RS data or command signal, R/W read-writes, the left and right screen chip selection signal of CS1, CS2, E enable signals and DB0-DB7 data are total Line " connects.
Other composition devices and current sensor and voltage sensor of the output end connection monitoring module of accessory power supply, are used In give these devices provide DC supply.In the present embodiment, accessory power supply is whole using the just safe silicon of model BKZ-5A 220 Flow supply unit product.The power supply is 220V exchange inputs (i.e. the terminal 13 and terminal 14 of monitoring module), and power is 20W work Frequency power transformer, full-bridge rectification obtains 30V DC voltages, then realizes three road output voltage (± 15V, 3.3V through isolating DC/DC modules And 5V), give monitoring module composition device (i.e. microprocessor, input voltage sample circuit, output voltage sampling circuit, output electricity Flow sample circuit, switch tube driving circuit, fan drive circuit and RS232 interface circuit) and current sensor, voltage sensor Device provides DC supply.
Input voltage sample circuit, output voltage sampling circuit and output current sample circuit are respectively used to that input will be exchanged The analog quantity of voltage, VD and average anode current is converted into digital quantity, is handled for microprocessor.
Input voltage sample circuit is identical with the circuit structure of output voltage sampling circuit, and its input is respectively as monitoring The input voltage collection terminal and output voltage collection terminal of module.Input voltage sample circuit or output voltage sampling circuit such as Fig. 7 It is shown, by two divider resistances R30 and R31, input resistance R32, two operational amplifier U2A and U5A, resistance R33, linear lights Coupling U4, polar capacitor C20, electric capacity C32 and C33, feedback resistance R34 and light emitting diode D3 compositions.Make divider resistance R30 one end For the input of voltage sampling circuit, it is connected with HNV025A type Hall sensors TV output end；Linear optical coupling U4 2 pins The 15V dc source both positive and negative polarities of accessory power supply are connected with 4 pins；+ 3.3V dc sources the connection of light emitting diode D3 one end In+3.3V the dc sources that accessory power supply provides；Operational amplifier U5A output end is the output end of voltage sampling circuit ADC1, it is connected with the ADC terminals of microprocessor；The 15V that the power end of two operational amplifiers is all connected with accessory power supply offer is straight Flow power supply.In the present embodiment, linear optical coupling U4 is HCNR201 models.
Voltage sampling circuit carries out input quantity tune using resistance R30 and R31 partial pressure as input quantity, using operational amplifier U2A It is whole, Phototube Coupling is carried out to the strong and weak electric signal in voltage sampling circuit with linear optical coupling U4；Linear optical coupling isolation is electric current, It can realize that voltage is isolated with concatenation operation amplifier U5A at output in input.
Output current collection terminal of the input of output current sample circuit as monitoring module, with current sensor TA's Output end is connected, and the circuit by resistance R21, R22, R23, R24, electric capacity C21, polar capacitor C22 and computing as shown in figure 8, put Big device U11A compositions.Input of the input resistance R21 one end as output current sample circuit, passed with HNA025A types Hall Sensor TA output end connection；The output end of resistance R24 one end concatenation operation amplifier, the other end sample as output current The output terminals A DC2 of circuit and the ADC terminals of microprocessor connect.The power end of operational amplifier is all connected with accessory power supply offer 15V dc sources.Current sensor TA realizes the isolation of hi-lo circuit；In order to meet microprocessor chip AD samplings It is required that adjusting the current signal of sensor output by operational amplifier U11A, this current signal is converted into 0-3.3V electricity Press signal.
Drive control end of the output end of switch tube driving circuit as monitoring module, the control connected in power module connect Receiving end, for the switching tube work in driving power module, and switch tube carries out over-current over-voltage protection.Switch tube driving circuit As shown in figure 9, it is made up of switching tube drive module 4D1 and its peripheral circuit.Switching tube drive module 4D1 model EXB841.Terminals P WM connections of the switching tube drive module 4D1 pin DSI- through triode A1 and microprocessor；Drive circuit Lead-out terminal 3 and terminal 4 be connected respectively with the terminal 485A and terminal 485B of power module, in driving power module Switching tube works；Dc source VDD5V is taken to+5V the voltages of accessory power supply output.
Switch tube driving circuit, which isolates PWM square waves caused by microprocessor through switching tube drive module 4D1, to be amplified, transformation Into the power signal of switching tube turn-on and turn-off that can be in stabilized driving power module, realize that the output voltage of control power supply is adjusted It is whole, and switch tube progress over-current over-voltage protection.
Temperature control end of the output end of fan drive circuit as monitoring module, 2 desk fans on power case are connected, Radiating temperature adjustment is carried out to the power device in control power supply for drive control fan.Fan drive circuit is as shown in Figure 10, by Photoelectric coupling circuit U1, resistance R55, R2, R3, R4, electric capacity C6, C7, C9 and voltage-regulator diode Z1 compositions.Photoelectric coupling circuit U1 type Number it is TLP250.Inputs of the photoelectric coupling circuit U1 pin IN+ as fan drive circuit, the PWM1 terminals with microprocessor Connection, lead-out terminal 11 and lead-out terminal 12 are connected with 2 radiator fans respectively；+ 15V is taken to+15V the electricity of accessory power supply output Pressure.
PWM square waves caused by microprocessor are amplified by fan drive circuit, and being transformed into being capable of stabilized driving fan electricity The power signal of machine, the start-up and shut-down control of fan electromotor is realized, so as to reduce the temperature of control each comprising modules of power supply.Power case The self cooling and air-cooled radiating mode being combined can be used.During underloading, take from cold operation and radiate；When heavily loaded, monitoring module is certainly The average anode current of dynamic detection control power supply, controls the radiator fan start and stop on power case back shroud, good heat dissipation effect.
RS232 interface circuit is used to realize the communication between control power supply and host computer, as shown in figure 11, by level conversion Device MAX3221 and its peripheral circuit composition.Level translator MAX3221 pin 11 and pin 9 is respectively as monitoring module The terminal 5 and terminal 6 at communication interface end, i.e. monitoring module, are connected with the host computer of power plant or intelligent substation；Level conversion Device MAX3221 pin 13 and pin 8 is connected with the terminal SCI-A of microprocessor；The level translator MAX3221 He of pin 15 Pin 16 is connected with auxiliary power output end ± 3.3V.
RS232 interface circuit realiration controls the communication function of power supply and host computer " remote measurement, remote signalling, remote control ".Due to micro- place It is inconsistent to manage universal serial port SCI-A level and the level signal of standard 232 of device, it is when microprocessor communicates with host computer, it is necessary to right Level is changed, so RS232 interface circuit selects MAX3221 as level translator in the present embodiment.During communication uplink, By the fiduciary level that the UART chip level conversion of microprocessor is RS232；During communication downlink, by the RS232 level in bus The 3.3V level of microprocessor is converted to, realizes the communication with host computer.
Insulating monitor uses unbalanced bridge intrinsic standoff ratio principle, the positive and negative electrode pair for automatic detection DC loop Ground voltage size, judges whether direct current output loop is grounded or insulate intact, solves In situ DC test loop and the two poles of the earth occur When (both positive and negative polarity) symmetry is grounded, insulating monitor failure or tripping problem, the sensitivity of insulating monitor is improved.Absolutely Edge supervisory device is as shown in figure 12, including two DC input terminals, 1 and 2, two switching switch SB, resistance R1, R2, R3, R4, R5, R6, voltmeter V, rectifier bridge U, light-coupled isolation device IC1, operational amplifier IC2, midget relay ZJ and triode VT.Cut Switch SB model LW-10D is changed, resistance R1, R2, R3, R4, R5, R6 resistance are respectively 200k Ω, 80k Ω, 2k Ω, 1k Ω, 2k Ω, 1k Ω, voltmeter V model ZF5135-V, rectifier bridge U are made up of 4 model DSEI2X6112B diodes, Light-coupled isolation device IC1 model HCNR201, operational amplifier IC2 model LM324, its+15V are taken to accessory power supply Output loop, midget relay ZJ model JD2912, ZJ terminal 3 and terminal 4 are moving together contact, triode VT type Number it is ISC-TO251.DC input terminal 1 and 2 is connected with the lead-out terminal VOUT+ and VOUT- of power module respectively；Two Switching switch SB one end connects DC input terminal 1 and 2 respectively, and the other end is grounded after being all connected with voltmeter V；Resistance R1, R2 It is connected in parallel on after series connection between DC input terminal 1 and 2；Rectifier bridge U positive DC end connection resistance R1, R2 intermediate node, Negative DC end is grounded, two exchange end connection light-coupled isolation device IC1 two inputs, and the two of light-coupled isolation device IC1 Individual output end connects dc source VCC and operational amplifier IC2 normal phase input end respectively；Operational amplifier IC2 positive is defeated Enter end while be grounded after connecting resistance R4, dc source is connected after operational amplifier IC2 inverting input connection resistance R3 VCC, operational amplifier IC2 inverting input are grounded after connecting resistance R5 simultaneously；Operational amplifier IC2 output end connection electricity Hinder R6 one end, resistance R6 other end connecting triodes VT base stage, triode VT colelctor electrode connection midget relay ZJ line Dc source VCC is connected after circle, midget relay ZJ moving together contact terminal 3 and terminal 4 is as the defeated of insulating monitor JCJ Go out to hold, i.e. insulating monitor JCJ terminal 3 and terminal 4 in Fig. 5.
Unbalanced bridge refers to R1 and R2 (R1 ≠ R2) and the insulation against ground resistance R+ of direct-flow input end 1 and direct-flow input end 2 Insulation against ground resistance R- forms unsymmetric circuit, and rectifier bridge U inputs are connected with asymmetric electric bridge.When In situ DC test loop Generation negative or positive electrode is grounded, or when being grounded during positive and negative electrodes in same, rectifier bridge U inputs collect asymmetric bridge output voltage, Rectifier bridge U produces output signal, after light-coupled isolation device IC1 isolation, adds operational amplifier IC2 inputs, finally exports Signal through operational amplifier IC2 amplification after, make voltmeter V turn on, midget relay ZJ coil magnetizations and act, its ZJ dynamic circuit connector is touched Point closure, send In situ DC test loop ground connection alarm signal.
Site Detection DC experiment loop positive pole is as follows with the method for negative pole insulation against ground resistance over the ground：
1. operation switching switch SB, closes SB1-2 and SB3-4, In situ DC is can obtain according to the voltmeter V V+ measured Test loop positive pole voltage-to-ground V+1, the V- measured can obtain negative pole voltage-to-ground V-1；
2. operation switching switch SB, disconnects SB1-2, SB3-4 closures, scene is can obtain according to the voltmeter V V+ measured DC experiment loop positive pole voltage-to-ground V+2, the V- measured can obtain negative pole voltage-to-ground V-2 again；
3. operation switching switch SB, disconnects SB1-2 closures, SB3-4, scene is can obtain according to the voltmeter V V+ measured DC experiment loop positive pole voltage-to-ground V+3, the V- measured can obtain negative pole voltage-to-ground V-3 again；
According to the above-mentioned data measured, it is R+=((V-1* that can calculate In situ DC test loop positive pole resistance to earth V+2)/(V-2*V+1)-1〕*200(kΩ)；In situ DC test loop negative pole resistance to earth is R-=((V-3*V+1)/(V-1* V+3)-1〕*200(kΩ)。
Power supply is controlled to power plant or intelligent substation electricity using the packaged type of above-mentioned power plant or intelligent substation The method that source is controlled, including automatically control and adjust two ways manually.
In manual regulative mode, D.C. voltmeter registration and default ginseng of the staff according to power module outlet Examine output voltage to compare, judge whether output voltage needs to adjust, when the difference of actual output voltage and reference output voltage surpasses , it is necessary to adjust output voltage when crossing default error, often by " ↓ " button on primary power source module faceplate, control the direct current of power supply defeated Going out voltage reduces 1V, often by once " ↑ " button, controls the VD of power supply to raise 1V.
In automatic control mode, the host computer of power plant or intelligent substation is by RS232 interface circuit to monitoring mould Block sends instruction, monitoring module using the combined combined type digital control approach of Adaptive fuzzy-PI control and Repetitive controller, Improve the steady-state characteristic of control power supply output using Repetitive controller, control power supply output is improved using Adaptive fuzzy-PI control Dynamic characteristic, now manual mode can not be intervened.The specific method of automatic control mode is as described below.
Step 1：Setting reference output voltage Uset and default error e, default error e are set as power module outlet volume Determine voltage UN5%；
Progress combined type is digital control after setting preset value, and as shown in figure 13, specific method is as follows：
Step 2：Voltage sensor monitors the output voltage Ut of power module outlet in real time, is calculated in monitoring module defeated Go out voltage Ut and reference output voltage Uset error amount e (k), wherein k represents k-th of sampled point, k=1,2 ..., K, and K=is adopted Sample speed/50；
Step 3：Whether error in judgement value e (k) is more than default error e；If (such as：The secondary circuit load of field test Mutation or DC voltage mutation), then control power supply to be in dynamic change state, perform step 4；If it is not, then control power supply is in Steady-state operating condition, perform step 5；
Step 4：Into Adaptive fuzzy-PI control mode, Adaptive fuzzy-PI control device experiences output voltage mutation, Calculate the departure between real output value y (t) and set-point r (t), determine that Δ Kp is proportionality coefficient, Δ Ki integral coefficients, enter Row Fuzzy Calculation, specifically, error amount e (k-1) the difference es c calculated in being controlled to adjust to error amount e (k) and its with the last time (k) it is blurred, wherein ec (k)=e (k)-e (k-1), as k=1, ec (k)=e (k), tables look-up and carry out fuzzy reasoning, really Certainty ratio coefficient delta Kp and integral coefficient Δ Ki, Fuzzy Calculation is carried out, PI adjustment is carried out to control electric power output voltage immediately, returned Step 2 is returned, continues to monitor real-time output voltage, until the output voltage of control power supply recovers to new steady s tate；
Step 5：Into Repetitive controller mode, in a reference cycle N, step 2 and step 3 are repeated, according to meter The error amount e (k) of calculation carries out the compensation adjustment of corresponding phase and amplitude to output voltage Ut, updates output voltage；After compensation Output voltage be Uo (k)=0.95Uo (k-N)+e (k), wherein, Uo (k) represent compensation after output voltage, Uo (k-N) table Show the output voltage after k-N compensation, N represents periodic sampling umber of beats, and every a cycle (N steps), output quantity is once tired out Add, this add up is that the value in cycle in output quantity first is weakened into 5%, then plus the currency e (k) of input quantity；In a ginseng After the delay for examining the cycle, repetitive controller is to controlling the output voltage of power supply to produce compensation adjustment effect.Delay refers to repeat to control The control instruction of system is not immediately performed, but stagnant the latter reference cycle just performs, before control strategy delay link is caused The cycle delay link Z concatenated on to passage-NCarry out control action delay a cycle, i.e.,：The error that this cycle detects Information just starts to influence controlled quentity controlled variable in next cycle.
The power plant or the packaged type control power supply and control method of intelligent substation that the present embodiment provides, exchange are defeated It is single phase ac 220V voltage class to enter power supply, and scene, which is drawn, connects low-voltage alternating current power supply conveniently；Control the DC voltage of power supply output There are manually and automatically two kinds of adjustment modes, and adjusting range is wide, (30-150) %U can be realizedNScope adjusts, and meets that scene is secondary The requirement of circuit units test voltage.Control power supply hardware circuit uses integrated, modularization topological structure, small volume (210 × 320 × 500) (3.5kg), in light weight, carrying easy to remove.Concrete function is as follows：
(1) intelligent monitoring function：1. automatic blocking function, monitoring module detects that In situ DC test loop is broken down When, instruction is sent, quick lock power module output loop, it is zero to make to control power supply VD, protects control electricity Source device；2. radiator fan automatic control function, monitoring module is real to controlling the average anode current of power supply to carry out comprehensive detection The automatic start-stop control of existing fan, reaches good heat radiating purpose；3. communication function, utilize the communication interface of monitoring module, control The VD and current value of power supply processed, protection and warning information are uploaded to the upper of power plant and monitoring system of electric substation Machine, and can receive the instruction that host computer passes down, and control is realized to control power supply；
(2) defencive function：1. ac input circuit overvoltage, low-voltage, voltage circuit breaking protection, automatic blocking control Electric power output voltage and electric current, shutdown alarm are automatic to recover after voltage is normal；2. output loop overvoltage, low-voltage, short circuit Protection, power supply output current limiting is controlled, is recovered automatically after failture evacuation；3. overtemperature protection, direct current of the monitoring module to control power supply Output current carries out comprehensive detection, realizes the automatic start-stop control of fan, reaches good heat radiating purpose, when detecting control power supply Shut down and alert during temperature too high (temperature >=70 ± 5 DEG C), it is automatic after temperature is normal to recover；4. lightning protection, in control power supply AC220KV ac input ends, 1 surge suppressor is installed, can be effectively prevented from because of overvoltage caused by lightning surge；
(3) DC loop insulating monitoring and alarm function：When ground connection or insulation reduction occur for In situ DC test loop, absolutely Edge supervisory device acts, and its moving together contact closure, starts alarm, and alarm sends light, audible warning, realizes automatic The direct current output loop insulation integrity of monitoring control power supply.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used To be modified to the technical scheme described in previous embodiment, either which part or all technical characteristic are equal Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from the model that the claims in the present invention are limited Enclose.

Claims (8)

1. the packaged type of a kind of power plant or intelligent substation controls power supply, it is characterised in that：Including exchanging input wires Post, alternating-current switch, monitoring module, power module, insulating monitor, alarm, dc switch, D.C. voltmeter, direct current Flow table, current sensor, voltage sensor and direct current output binding post；
The first end connection exchange lead-in clamp of the alternating-current switch, for connecting 220V alternating current input power supplyings；Power module Using ER22005/S models, the input of power module and the input voltage collection terminal of monitoring module are all connected to alternating-current switch The second end, the control receiving terminal of the power module passes through the drive control that two switch controlled wires connect monitoring module End；Power module is used to export steady dc voltage under the control of monitoring module；The input of the voltage sensor is simultaneously It is associated in the output end of power module, the output voltage collection terminal of the output end connection monitoring module of voltage sensor；The electric current Sensor and DC ammeter are sequentially connected in series on a wire between the output end of power module and dc switch, and electric current passes The output current collection terminal of sensor TA output end connection monitoring module, the other end connection direct current output wiring of dc switch Post；The input and D.C. voltmeter of the insulating monitor are connected in parallel on the output end of power module, and the alarm connects It is connected between an output end of insulating monitor and 220V ac working power supplies, another output end of insulating monitor Directly it is connected with 220V ac working power supplies；The alarm be used to occurring in control power supply direct current output loop ground connection it is bad or When insulation reduces, alarm light and acoustic signal are sent；The voltage sensor and current sensor are Hall sensor；
The monitoring module is used to receiving the instruction of power plant or intelligent substation host computer, and according to the instruction of host computer to defeated Enter voltage to automatically adjust, be additionally operable to the state of monitoring DC loop in real time, send instruction, quick lock power supply when a failure occurs Module exports DC loop, and it is zero to make to control power supply VD, protection control power-supply device；The monitoring module includes Display unit and control unit and its peripheral circuit；The display unit is liquid crystal display, and its input connects control unit, Numerical value for the AC-input voltage of real-time display monitoring module collection, VD and average anode current；It is described Control unit is microprocessor, for reading the voltage and current value of control power supply output loop, by sampled value and given electricity Pressure base value compares, and the high-frequency converter in driving power module, power output end is obtained steady dc voltage；The control The peripheral circuit of unit processed includes accessory power supply, input voltage sample circuit, output voltage sampling circuit, output current sampling electricity Road, switch tube driving circuit and RS232 interface circuit；
The accessory power supply uses silicon commutating power supply device, and other composition devices and electric current of its output end connection monitoring module pass Sensor and voltage sensor, for providing DC supply to these devices；
The input voltage sample circuit, output voltage sampling circuit and output current sample circuit are respectively used to that input will be exchanged The analog quantity of voltage, VD and average anode current is converted into digital quantity, is handled for microprocessor；It is described defeated It is identical with the circuit structure of output voltage sampling circuit to enter voltage sampling circuit, input of its input respectively as monitoring module Voltage acquisition end and output voltage collection terminal, its output end are connected with microprocessor；The output current sample circuit it is defeated Enter output current collection terminal of the end as monitoring module, be connected with the output end of current sensor, output current sample circuit Output end is connected with microprocessor；
Drive control end of the output end of the switch tube driving circuit as monitoring module, the control connected in power module connect Receiving end, the PWM square wave output ends of the input connection microprocessor of switch tube driving circuit, for opening in driving power module Pipe work is closed, and switch tube carries out over-current over-voltage protection；
The RS232 interface circuit is connected between microprocessor and power plant or the host computer of intelligent substation, for realizing Control the communication between power supply and host computer；
The insulating monitor is used for the positive and negative electrode voltage-to-ground size in automatic detection direct current output loop, judges that direct current returns Whether road is grounded or insulate intact；Insulating monitor includes two DC input terminals 1 and 2, two switching switch SB, resistance R1, R2, R3, R4, R5, R6, voltmeter V, rectifier bridge U, light-coupled isolation device IC1, operational amplifier IC2, midget relay ZJ With triode VT；DC input terminal 1 and 2 is connected with the lead-out terminal VOUT+ and VOUT- of power module respectively；Two are cut The one end for changing switch SB connects DC input terminal 1 and 2 respectively, and the other end is grounded after being all connected with voltmeter V；Resistance R1, R2 go here and there It is connected in parallel on after connection between DC input terminal 1 and 2；Rectifier bridge U two DC terminals connect resistance R1, R2 intermediate node respectively And ground connection, two exchange end connection light-coupled isolation device IC1 two inputs, light-coupled isolation device IC1 two output ends Dc source VCC and operational amplifier IC2 normal phase input end is connected respectively；Operational amplifier IC2 normal phase input end is simultaneously It is grounded after connection resistance R4, connects dc source VCC after operational amplifier IC2 inverting input connection resistance R3, computing is put Big device IC2 inverting input is grounded after connecting resistance R5 simultaneously；Operational amplifier IC2 output end connection resistance R6 one end, Resistance R6 other end connecting triodes VT base stage, connect after triode VT colelctor electrode connection midget relay ZJ coil straight Output end of stream power supply VCC, midget relay ZJ the moving together contact terminal 3 and terminal 4 as insulating monitor.
2. the packaged type of power plant according to claim 1 or intelligent substation controls power supply, it is characterised in that：Institute Stating the packaged type control power supply in power plant or intelligent substation also includes surge suppressor；Surge suppressor is used to prevent from controlling The AC220V ac input ends of power supply processed produce overvoltage surge, the surge suppressor is switched by supplementary AC because of thunderbolt The second end of the alternating-current switch is connected to, the earth terminal of surge suppressor is grounded.
3. the packaged type of power plant according to claim 2 or intelligent substation controls power supply, it is characterised in that：Institute Stating the packaged type control power supply in power plant or intelligent substation also includes power case, for carrying and installing control power supply Other composition devices, including casing (101), drive end bearing bracket (102), case lock (103), installation panel (104), rear-end plate And handle (106) (105)；The earthing of casing of the casing (101), the case lock (103) are located at drive end bearing bracket (102) and casing (101) joint；The installation panel (104) is located at the rear side of drive end bearing bracket (102), and embedded install is handed in installation panel (104) Flow lead-in clamp, alternating-current switch, monitoring module, power module, insulating monitor, alarm, dc switch, DC voltage Table, DC ammeter, surge suppressor, direct current output binding post and ground terminal, the ground terminal are used to connect surge suppression The earth terminal of device processed；The rear-end plate (105) is structure as a whole with casing (101), embedded fixation on rear-end plate (105) 2 desk fans (107) are installed；The handle (106) is on a side of casing (101).
4. the packaged type of power plant according to claim 3 or intelligent substation controls power supply, it is characterised in that：Institute Stating the peripheral circuit of monitoring module also includes fan drive circuit, and its output end is connected on power case as temperature control end 2 desk fans (107), the PWM square waves output end of its input and microprocessor connects, for drive control fan to control electricity Power device in source carries out radiating temperature adjustment.
5. the packaged type control power supply in power plant or intelligent substation according to claim 3 or 4, its feature exist In：The power module is arranged in installation panel (104) by power module support, and the power module support includes two Bearing, support panel (1010) and position limiting structure, described two bearings are opening two symmetrical U-shaped bottom seats staggered relatively (109), the lower end of two U-shaped bottom seats (109) is respectively equipped with 2 bracket base bolts (1011), for the peace with power case It is fixed to fill panel (104)；The support panel (1010) is fixed at the upper end of two U-shaped bottom seats (109), the position limiting structure For two angle bar (1012) that are parallel and being fixed on the support panel, for left and right fixed power source module.
6. the packaged type of power plant according to claim 5 or intelligent substation controls power supply, it is characterised in that：Institute The material for stating casing (101) and installation panel (104) is 2.0mm thickness aluminium sheets, and casing (101) is through spray treatment；Drive end bearing bracket (102) Liner hemispherical black sponge, and liner seal；Case lock (103) is provided with four, respectively symmetrically located at drive end bearing bracket (102) and case The both sides of body (101) joint.
7. a kind of packaged type control power supply in power plant or intelligent substation using described in claim 1 to power plant or The method that intelligent substation power supply is controlled, it is characterised in that：This method includes automatically controlling and adjusts two ways manually；
In manual regulative mode, staff is according to the D.C. voltmeter registration of power module outlet with default with reference to defeated Go out voltage ratio compared with, judge whether output voltage needs to adjust, when the difference of actual output voltage and reference output voltage exceed it is pre- If, it is necessary to adjust output voltage during error, often by " ↓ " button on primary power source module faceplate, control the direct current output of power supply electric The low 1V of pressure drop, often by once " ↑ " button, the VD of power supply is controlled to raise 1V；
In automatic control mode, the host computer of power plant or intelligent substation is sent out by RS232 interface circuit to monitoring module Go out instruction, monitoring module is adopted using the combined combined type digital control approach of Adaptive fuzzy-PI control and Repetitive controller Improve the steady-state characteristic of control power supply output with Repetitive controller, the dynamic of control power supply output is improved using Adaptive fuzzy-PI control Step response, specific method are：
Step 1：Set reference output voltage Uset and default error e；
Step 2：Voltage sensor monitors the output voltage Ut of power module outlet in real time, and output electricity is calculated in monitoring module Ut and reference output voltage Uset error amount e (k), wherein k is pressed to represent k-th of sampled point, k=1,2 ..., K, K=sampling speed Degree/50；
Step 3：Whether error in judgement value e (k) is more than default error e；If so, then control power supply is in dynamic change state, hold Row step 4；If it is not, then control power supply is in steady-state operating condition, step 5 is performed；
Step 4：Into Adaptive fuzzy-PI control mode, the mistake calculated in being controlled to adjust to error amount e (k) and its with the last time Difference e (k-1) difference e c (k) is blurred, and is tabled look-up and is carried out fuzzy reasoning, determines proportionality coefficient Δ Kp and integral coefficient Δ Ki, Fuzzy Calculation is carried out, PI adjustment, return to step 2 are carried out to control electric power output voltage immediately；Wherein ec (k)=e (k)-e (k-1), as k=1, ec (k)=e (k)；
Step 5：Into Repetitive controller mode, in a reference cycle N, step 2 and step 3 are repeated, obtains each sampling The error amount e (k) of point, after the delay in a reference cycle terminates, repetitive controller enters to control power supply to output voltage Ut The compensation adjustment of the corresponding phase and amplitude of row, updates output voltage, the output voltage after compensation is Uo (k)=0.95Uo (k- N)+e (k), wherein, Uo (k) represents the output voltage after compensation, and Uo (k-N) represents the output voltage after k-N compensation, and N is represented Periodic sampling umber of beats.
8. the packaged type of power plant according to claim 7 or intelligent substation controls power supply, it is characterised in that：Institute State default error e and be set as power module outlet rated voltage UN5%.
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