CN201805212U - Incoming line open-phase protection device of traction substation - Google Patents

Abstract

The utility model relates to an incoming line open-phase protection device of a traction substation, which comprises an MCU (micro-controller unit), a real-time clock, an analog input and conditioner, a communication interface, an LED (light-emitting diode) driver, an LCD (liquid crystal display) interface, two interfaces, a power supply, a control outlet, a dead contact output and a terminal, and is characterized in that the simple and reliable protection device is constituted by utilizing characteristic voltage and current during incoming line open-phase and matching with the effective locking of a feed line system. The protection device has the advantages that the device can detect the emergence of excitation reactance of a transformer and the occurrence of power frequency resonance of a to-ground capacitor in a real-time manner, trip off corresponding switches, destroy the conditions for occurrence of resonance and solve the problem of damaging the device due to over-voltage; when in broken line open-phase, the device can differentiate two fault ways of grounding and non-grounding and carry out reasonable back break operation so as to avoid the burning loss of the device; and the protection device can effectively eliminate a protection dead zone of an incoming line system under the premise of not increasing a primary device, fill in a gap that the incoming line system of an electrified railway has no protection and further become the ideal incoming line open-phase protection device of the traction substation.

Description

Traction substation inlet wire phase-lacking protective device

Technical field

The utility model relates to the protective device of a kind of inlet wire system, and particularly a kind of traction substation inlet wire phase-lacking protective device is applicable to the protection of the Terminal Substation phase-deficient operation of 110kV single power supply.

Background technology

Power industry standard " overvoltage protection of alternating-current electric device and insulation coordination " (DL/T 620-1997) the 4.1st joint has in the system of following elaboration: scope I temporary overvoltage; by the single power supply side with the transformer of breaker operator isolated neutral open-phase operation appears or fuse is non-when fusing mutually entirely; if the magnetizing inductance of transformer and direct-to-ground capacitance produce ferro resonance, can produce the overvoltage of 2.0p.u.-3.0p.u..

In the electric railway system, the high order harmonic component that produces because of asymmetric load, negative-sequence current can make the running environment of electrical network and circuit constantly worsen to the impact electric power of operating lead; Along with the prolongation of running time, the probability of failure of circuit and switch also will increase year by year.

In recent years, traction substation is owing to the phase-deficient operation accident that 110kV inlet wire broken string or circuit breaker failure cause also occurs repeatedly.For example: on April 17th, 2006, because local power supply administration car is posted electric substation's 156 oil-minimum breaker oil spouts, cause Beijing-Guangzhou Railway Wangdu electric substation phase-deficient operation, accident causes traction substation power failure 2.5h, 1 of 110kV low-oil-content circuit-breaker damage, the local 110kV of transformer station lightning arrester to burn 1; On June 20th, 2008, north yellow line Anguo inlet wire of substation broken string, many actions of broken string phase BLQ, transformer neutral point BLQ in service blast, switch be standby transformer neutral point Explosion of on Arrester after the crossing operation mode, accident cause Anguo electric substation to have a power failure to reach 10 surplus hour.

In the operational mode of existing traction substation, after the operator on duty finds phase shortage, the voltage to earth that 36.5kV is arranged because of neutral point, if according to existing principle and order back brake, can produce the contact that burns out neutral point switch, the problems such as useful life that cause inlet wire SW6 circuit breaker insulation decline, shortening main transformer, and needing manually short envelope corresponding interlocking loop, this just will certainly cause time-delay, makes fault in time not get rid of.

As seen, the traction substation of any supply power mode when the inlet wire phase shortage, may produce wire-break resonance first and cause Explosion of on Arrester; Second because of local and traction substation all do not trip, burn out problems such as isolation switch contact, circuit breaker and transformer when causing the traction substation back brake; Even more serious is when contact line is taked the over-zone feeding mode, to have limited wagon flow, upset transport order, influenced transport capacity.

At present, in the existing traction substation, the protection that relates to the inlet wire system comprises two kinds of o-volt protection and zero sequence excess current protections.O-volt protection is to realize by the voltage transformer that is used to count, measure of the voltage indicating device in the inlet wire isolating switch outside or inlet wire isolating switch inboard; The zero sequence excess current protection is to be mounted on the current transformer of transformer neutral point to realize, but because a neutral point switch instantaneous input at the switching transformer, switch disconnects under other situation, and this zero sequence excess current protection that just is equivalent to neutral point does not drop into.That is to say that existing inlet wire system has only simple o-volt protection.

The utility model content

The purpose of this utility model is: design a kind of when the traction substation phase-deficient operation; can detect the fault point immediately; the excision fault point, and by reasonable Operation Mode drop into back-up system traction substation inlet wire phase-lacking protective device, in order to overcome the deficiencies in the prior art.

The purpose of this utility model can realize by following technical proposals:

This traction substation inlet wire phase-lacking protective device, comprise MCU, real-time clock (RTC), analog quantity input and conditioning, communication interface, LED driving, LCD interface, two interfaces, power supply, control outlet and idle contact output and terminals, it is characterized in that: MCU, real-time clock (RTC), LED driving, LCD interface and an interface constitute main board, and analog quantity input and conditioning, communication interface, power supply, control outlet and idle contact output, terminal and another interface constitute the control board part; MCU adopts 16 single-chip microcomputers with data association processing capacity as CPU, and its 12 built-in bit A/D converters are used to finish the data sampling function of this device; Real-time clock (RTC) is used to this device that clock signal is provided; LED drives lighting by the single-chip microcomputer mouth line driving LED indicator light in the MCU; The LCD interface is used for liquid crystal display screen is connected with main board; Miniature precision voltage transformer summation current transformer is adopted in analog quantity input and conditioning, will input to the A/D sampling channel of single-chip microcomputer in the MCU through voltage, the current signal of conditioning, calculates for the MCU sampling; Communication interface is used for the Transistor-Transistor Logic level communication signal of single-chip microcomputer in the MCU is converted to 485 signals; Power supply provides working power for this device; The adhesive and the release of OC gate control relay is passed through in control outlet and idle contact output by the mouth line of single-chip microcomputer in the MCU; Terminal is used to introduce all circumscripted power lines, and draws the idle contact output line of all relays in control outlet and the idle contact output; Two interfaces are used to connect main board and control board part, connect by flat cable between two interfaces.

MCU described in the utility model includes single chip circuit, keyboard interface circuit, memory circuit, CPU program download interface, A/D sampling reference voltage generating circuit and power filter, the circuit of uncoupling, wherein, single-chip microcomputer 1U1 is arranged in the single chip circuit, the 8M crystal oscillator, diode 1D1 and electric capacity 1C3, the model of its single-chip microcomputer 1U1 is DSPIC30F5011, the model of diode 1D1 is IN4148, the single needle interface KEYINT of exclusion 1RP2 and 5 lines is arranged in the keyboard interface circuit, nonvolatile storage 1U3 is arranged in the memory circuit, its model is 2464, the single needle interface 1J1 of 6 lines is arranged in the CPU program download interface, its model is PIN6, in the A/D sampling reference voltage generating circuit three ends adjustable shunting a reference source 3H1 and electric capacity 3E1 and 3C3 are arranged, the model of the adjustable shunting a reference source of its three end 3H1 is TL431, power filter, uncoupling has electric capacity EP1 in the circuit, CP1, CP2 and CP3; Clock chip 1U2, electric capacity 1E1 and 32K crystal oscillator are arranged in the real-time clock (RTC), and the model of its clock chip 1U2 is DS1302; LED has exclusion 1RP1 and light-emitting diode 1L1 and 1L2 in driving; The single needle interface LCMINT of triode 1T1 and 20 lines is arranged in the LCD interface, and the model of its triode 1T1 is respectively 8050; In analog quantity input and the conditioning current mode voltage transformer and punching type current transformer are arranged, its model is respectively HL88V and HLB99A; Communication interface conversion chip 2U1 is arranged in the communication interface, and its model is MAX485; Switching power source chip POWER is arranged in the power supply, and its model is HAD10-05V12-LFCI; In control outlet and the idle contact output OC door chip 1U5, solid state relay, mini power relay and other four power relays are arranged, wherein, the model of OC door chip 1U5, solid state relay and mini power relay is respectively UL2003, JGX-5FA and JH32F-H, and the model of other four power relays is JH32F-Z; 10 line plug formula binding post DIOINT and 12 line plug formula binding post ANINT are arranged in the terminal; Ox horn seat BINT is arranged respectively in two interfaces, and its model is IDC26;

Its annexation is: main board, and in MCU, between single chip circuit and the keyboard interface circuit, the 1st, the 2nd, the 3rd and the 4th pin of the single needle interface KEYINT of 5 lines is connected respectively to the 52nd, the 53rd, the 54th and the 55th pin of single-chip microcomputer 1U1; Between single chip circuit and the memory circuit, the 5th and the 6th pin of nonvolatile storage 1U3 is connected respectively to the 36th and the 37th pin of single-chip microcomputer 1U1; Between single chip circuit and the CPU program download interface, the 1st, the 4th and the 5th pin of the single needle interface 1J1 of 6 lines is connected respectively to the 7th, the 18th and the 17th pin of single-chip microcomputer 1U1; Between real-time clock (RTC) and the MCU, the 5th, the 6th and the 7th pin of clock chip 1U2 is connected respectively to the 62nd, the 61st and the 60th pin of single-chip microcomputer 1U1; Between LED driving and the MCU, the negative pole of light-emitting diode 1L1 and 1L2 is connected to the 49th and the 44th pin of single-chip microcomputer 1U1 respectively, and the 4th and the 5th pin of exclusion 1RP1 is connected to the 37th and the 36th pin of single-chip microcomputer 1U1 respectively; Between LCD interface and the MCU, the the 4th, the 5th and the 6th pin of the single needle interface LCMINT of 20 lines is connected respectively to the 48th, the 47th and the 46th pin of single-chip microcomputer 1U1, the 17th pin of the single needle interface LCMINT of 20 lines is unsettled, and the base stage of triode 1T1 is connected to the 43rd pin of single-chip microcomputer 1U1 by resistance 1R6; Between the interface and MCU on the main board, the the 4th, the 5th, the 6th, the 7th, the 8th, the 9th, the 10th, the 11st and the 12nd pin of its ox horn seat BINT is connected respectively to the 11st, the 12nd, the 13rd, the 14th, the 15th, the 16th, the 21st, the 22nd and the 23rd pin of single-chip microcomputer 1U1, the the 13rd and the 14th pin short circuit of ox horn seat BINT, and be connected to the vref signal output of A/D sampling reference voltage generating circuit in the MCU; The control board part, between analog quantity input and conditioning and the terminal, current mode voltage transformer UMAPT in analog quantity input and the conditioning, the positive pole of the primary winding of UMBPT and UMCPT is connected to the 4th of the interior 12 line plug formula binding post ANINT of terminal respectively, the the 5th and the 6th pin, be connected to the 7th pin of 12 line plug formula binding post ANINT behind its negative pole short circuit, current mode voltage transformer ULAPT, the positive pole of the primary winding of ULBPT and ULCPT is connected to the 9th of the interior 12 line plug formula binding post ANINT of terminal respectively, the the 10th and the 11st pin is connected to the 12nd pin of 12 line plug formula binding post ANINT behind its negative pole short circuit; Between the interface on analog quantity input and conditioning and the control board part, analog quantity input and conditioning are interior from current mode voltage transformer UMAPT, the voltage signal UAINR that the positive pole of the secondary coil of UMBPT and UMCPT is drawn, UBINR and UCINR are respectively behind capacitor filtering, be connected to the 4th of ox horn seat BINT in the interface on the control board part respectively, the the 5th and the 6th pin, current mode voltage transformer UMAPT, behind the negative pole short circuit of the secondary coil of UMBPT and UMCPT, be connected to the 13rd and the 14th pin of ox horn seat BINT, from current mode voltage transformer ULAPT, the voltage signal UAINC that the positive pole of the secondary coil of ULBPT and ULCPT is drawn, UBINC and UCINC are respectively behind capacitor filtering, be connected to the 7th of ox horn seat BINT in the interface on the control board part respectively, the the 8th and the 9th pin, current mode voltage transformer ULAPT, behind the negative pole short circuit of the secondary coil of ULBPT and ULCPT, be connected to the 13rd and the 14th pin of ox horn seat BINT, from punching type current transformer CTA, the current signal IA that the positive pole of the secondary coil of CTB and CTC is drawn, IB and IC are respectively behind capacitor filtering, be connected to the 10th of ox horn seat BINT in the interface on the control board part respectively, the the 11st and the 12nd pin, punching type current transformer CTA, the negative pole of the secondary coil of CTB and CTC all is connected to the 13rd and the 14th pin of ox horn seat BINT; Between the interface on communication interface and the control board part, the the 1st and the 4th pin of communication interface conversion chip 2U1 is connected respectively to the 23rd and the 22nd pin of its ox horn seat BINT, is connected to the 21st pin of ox horn seat BINT behind the 2nd and the 3rd pin short circuit of communication interface conversion chip 2U1; Between power supply and the terminal, the the 3rd and the 2nd pin of switching power source chip POWER is connected respectively to the 1st and the 2nd pin of 12 line plug formula binding post ANINT, the 5th pin output DC source signal VCC of switching power source chip POWER, for this device provides working power, the power filter of dc power signal VCC in MCU, uncouple circuit filtering and uncouple after, give the power supply of the single chip circuit in the MCU separately; Between the interface on control outlet and idle contact output and the control board part, the 2nd of OC door chip 1U5, the 3rd, the 4th, the 5th, the the 6th and the 7th pin is connected respectively to the 20th of its ox horn seat BINT, the 19th, the 18th, the 17th, the the 16th and the 15th pin, between control outlet and idle contact output and the terminal, the coil output of solid state relay SCR2 is drawn signal SCRCONT, and be connected to the 15th pin of OC door chip 1U5, the positive pole output OFFOUTCOM signal of the idle contact of solid state relay SCR2, and be connected to the 1st pin of 10 line plug formula binding post DIOINT, the coil J5A output of mini power relay is drawn signal TCOUT, and be connected to the 14th pin of OC door chip 1U5, the positive pole of the idle contact J5B of mini power relay is drawn signal OFFOUT2, and be connected to the 2nd pin of 10 line plug formula binding post DIOINT, the coil J1B of power relay, J2B, the output of J3B and J4B is drawn signal SCONT1 respectively, SCONT2, SCONT3 and SCONT4, and be connected to the 13rd of 0C door chip 1U5 respectively, the 12nd, the the 11st and the 10th pin, the idle contact J1A of power relay, J2A, the two ends of J3A and J4A are drawn signal OUT11 and OUT12 respectively, OUT21 and OUT22, OUT31 and OUT32 and OUT41 and OUT42, and be connected to the 3rd of 10 line plug formula binding post DIOINT respectively, the 4th, the 5th, the 6th, the 7th, the 8th, the the 9th and the 10th pin; Between the interface on interface on the main board and the control board part, two interfaces connect by 26 line flat cables.

The utility model has the advantages that: 1) when static exciter reactance and direct-to-ground capacitance generation industrial frequency resonance occurring, this device can detect the power-frequency overvoltage more than 2 times that system produces immediately, and the condition that tripping respective switch, destruction resonance take place has prevented the generation of equipment overvoltage damage problem; 2) when the broken string phase shortage, this device can be distinguished ground connection and earth-free two kinds of failure modes, produce residual voltage, electric current formation phase shortage ground protection when utilizing ground connection, the size of current of non-fault in mutually equates when utilizing phase shortage earth-free, phase place is opposite, and have only the feature of positive sequence component and negative sequence component to constitute the earth-free protection of phase shortage, prevented the generation of the whole power cut problems of a certain direction contact line effectively; 3) this protective device is after intelligent distinguishing goes out the inlet wire system failure, at first by rational order back brake, avoids the problem of equipment scaling loss to produce, and when back-up system occurring and do not have pressure, the prompting person on duty starts and distinguishes prediction scheme more, has ensured the normal operation of system safely and reliably; 4) this protective device is except that finishing phase shortage and resonance protection, vector calculation analysis by voltage, electric current, also realize under the prerequisite that does not increase primary equipment, finishing the defencive function of inlet wire system, filled up the blank that existing traction substation inlet wire system does not have protection; 5) adaptability is good, and this protective device can be included in the existing complex automatic system easily, can with communication processor with 485 mode swap data, offer power supply dispatching, the comprehensive judgement, the unified command that are very beneficial for dispatching; In addition, this device also is applicable to the operational mode of the 110kV terminal transformer isolated neutral in many local industrial enterprise, and as the inlet wire system main protection of local one-end substation.

Description of drawings

Fig. 1 is device overall framework figure;

Fig. 2 is the main board schematic diagram;

Fig. 3 is a control board part schematic diagram;

Fig. 4 is the device elementary diagram;

Fig. 5 is device back connection terminal board figure.

Embodiment

As shown in figure 15, this traction substation inlet wire phase-lacking protective device, comprise MCU1, real-time clock (RTC) 2, analog quantity input and nurse one's health 3, communication interface 4, LED drive 5, LCD interface 6, two interfaces 7, power supply 8, control outlet and idle contact output 9 and terminals 10, it is characterized in that: MCU1, real-time clock (RTC) 2, LED drive 5, LCD interface 6 and an interface 7 constitute main board, the analog quantity input and nurse one's health 3, communication interface 4, power supply 8, control outlet and idle contact output 9, terminal 10 and another interface 7 constitutes the control board parts; MCU1 adopts 16 single-chip microcomputers with data association processing capacity as CPU, and its 12 built-in bit A/D converters are used to finish the data sampling function of this device; Real-time clock (RTC) 2 is used to this device that clock signal is provided; LED drives 5 lighting by the single-chip microcomputer mouth line driving LED indicator light in the MCU1; LCD interface 6 is used for liquid crystal display screen is connected with main board; Analog quantity is imported and is nursed one's health 3 and adopts miniature precision voltage transformer summation current transformers, will input to the A/D sampling channel of single-chip microcomputer in the MCU1 through voltage, the current signal of conditioning, samples for MCU1 and calculates; Communication interface 4 is used for the Transistor-Transistor Logic level communication signal of single-chip microcomputer in the MCU1 is converted to 485 signals; Power supply 8 provides working power for this device; The adhesive and the release of OC gate control relay is passed through in control outlet and idle contact output 9 by the mouth line of single-chip microcomputer in the MCU1; Terminal 10 is used to introduce all circumscripted power lines, and draws the idle contact output line of all relays in control outlet and the idle contact output 9; Two interfaces 7 are used to connect main board and control board part, connect by flat cable between two interfaces 7.

Described MCU1 includes single chip circuit, keyboard interface circuit, memory circuit, CPU program download interface, A/D sampling reference voltage generating circuit and power filter, the circuit of uncoupling, wherein, single-chip microcomputer 1U1 is arranged in the single chip circuit, the 8M crystal oscillator, diode 1D1 and electric capacity 1C3, the model of its single-chip microcomputer 1U1 is DSPIC30F5011, the model of diode 1D1 is IN4148, the single needle interface KEYINT of exclusion 1RP2 and 5 lines is arranged in the keyboard interface circuit, nonvolatile storage 1U3 is arranged in the memory circuit, its model is 2464, the single needle interface 1J1 of 6 lines is arranged in the CPU program download interface, its model is PIN6, in the A/D sampling reference voltage generating circuit three ends adjustable shunting a reference source 3H1 and electric capacity 3E1 and 3C3 are arranged, the model of the adjustable shunting a reference source of its three end 3H1 is TL431, power filter, uncoupling has electric capacity EP1 in the circuit, CP1, CP2 and CP3; Clock chip 1U2, electric capacity 1E1 and 32K crystal oscillator are arranged in the real-time clock (RTC) 2, and the model of its clock chip 1U2 is DS1302; LED drives in 5 exclusion 1RP1 and light-emitting diode 1L1 and 112, and light-emitting diode 1L1 and 1L2 use as malfunction indicator lamp and advance notice indicator light respectively; The single needle interface LCMINT of triode 1T1 and 20 lines is arranged in the LCD interface 6, and the model of its triode 1T1 is respectively 8050; Analog quantity is imported and nursed one's health current mode voltage transformer and punching type current transformer in 3, its model is respectively HL88V and HLB99A; Communication interface conversion chip 2U1 is arranged in the communication interface 4, and its model is MAX485; Switching power source chip POWER is arranged in the power supply 8, and its model is HAD10-05V12-LFCI; In control outlet and the idle contact output 9 0C door chip 1U5, solid state relay, mini power relay and other four power relays are arranged, wherein, the model of OC door chip 1U5, solid state relay and mini power relay is respectively UL2003, JGX-5FA and JH32F-H, and the model of other four power relays is JH32F-Z; 10 line plug formula binding post DIOINT and 12 line plug formula binding post ANINT are arranged in the terminal 10; Ox horn seat BINT is arranged respectively in two interfaces 7, and its model is IDC26;

Its annexation is: main board, and in MCU1, between single chip circuit and the keyboard interface circuit, the 1st, the 2nd, the 3rd and the 4th pin of the single needle interface KEYINT of 5 lines is connected respectively to the 52nd, the 53rd, the 54th and the 55th pin of single-chip microcomputer 1U1; Between single chip circuit and the memory circuit, the 5th and the 6th pin of nonvolatile storage 1U3 is connected respectively to the 36th and the 37th pin of single-chip microcomputer 1U1; Between single chip circuit and the CPU program download interface, the 1st, the 4th and the 5th pin of the single needle interface 1J1 of 6 lines is connected respectively to the 7th, the 18th and the 17th pin of single-chip microcomputer 1U1; Between real-time clock (RTC) 2 and the MCU1, the 5th, the 6th and the 7th pin of clock chip 1U2 is connected respectively to the 62nd, the 61st and the 60th pin of single-chip microcomputer 1U1; LED drive 5 and MCU1 between, light-emitting diode 1L1 and 112 negative pole are connected to the 49th and the 44th pin of single-chip microcomputer 1U1 respectively, the 4th and the 5th pin of exclusion 1RP1 is connected to the 37th and the 36th pin of single-chip microcomputer 1U1 respectively; Between LCD interface 6 and the MCU1, the the 4th, the 5th and the 6th pin of the single needle interface LCMINT of 20 lines is connected respectively to the 48th, the 47th and the 46th pin of single-chip microcomputer 1U1, the 17th pin of the single needle interface LCMINT of 20 lines is unsettled, and the base stage of triode 1T1 is connected to the 43rd pin of single-chip microcomputer 1U1 by resistance 1R6; Between the interface 7 and MCU1 on the main board, the the 4th, the 5th, the 6th, the 7th, the 8th, the 9th, the 10th, the 11st and the 12nd pin of its ox horn seat BINT is connected respectively to the 11st, the 12nd, the 13rd, the 14th, the 15th, the 16th, the 21st, the 22nd and the 23rd pin of single-chip microcomputer 1U1, the the 13rd and the 14th pin short circuit of ox horn seat BINT, and be connected to the vref signal output of A/D sampling reference voltage generating circuit in the MCU1; The control board part, analog quantity input and nurse one's health 3 and terminal 10 between, the current mode voltage transformer UMAPT in 3 are imported and nursed one's health to analog quantity, the positive pole of the primary winding of UMBPT and UMCPT is connected to the 4th of terminal 10 interior 12 line plug formula binding post ANINT respectively, the the 5th and the 6th pin, be connected to the 7th pin of 12 line plug formula binding post ANINT behind its negative pole short circuit, current mode voltage transformer ULAPT, the positive pole of the primary winding of ULBPT and ULCPT is connected to the 9th of terminal 10 interior 12 line plug formula binding post ANINT respectively, the the 10th and the 11st pin is connected to the 12nd pin of 12 line plug formula binding post ANINT behind its negative pole short circuit; Analog quantity input and nurse one's health 3 with the interface 7 of control board on partly between, analog quantity is imported and is nursed one's health in 3 from current mode voltage transformer UMAPT, the voltage signal UAINR that the positive pole of the secondary coil of UMBPT and UMCPT is drawn, UBINR and UCINR are respectively behind capacitor filtering, be connected to the 4th of ox horn seat BINT in the interface 7 on the control board part respectively, the the 5th and the 6th pin, current mode voltage transformer UMAPT, behind the negative pole short circuit of the secondary coil of UMBPT and UMCPT, be connected to the 13rd and the 14th pin of ox horn seat BINT, from current mode voltage transformer ULAPT, the voltage signal UAINC that the positive pole of the secondary coil of ULBPT and ULCPT is drawn, UBINC and UCINC are respectively behind capacitor filtering, be connected to the 7th of ox horn seat BINT in the interface 7 on the control board part respectively, the the 8th and the 9th pin, current mode voltage transformer ULAPT, behind the negative pole short circuit of the secondary coil of ULBPT and ULCPT, be connected to the 13rd and the 14th pin of ox horn seat BINT, from punching type current transformer CTA, the current signal IA that the positive pole of the secondary coil of CTB and CTC is drawn, IB and IC are respectively behind capacitor filtering, be connected to the 10th of ox horn seat BINT in the interface 7 on the control board part respectively, the the 11st and the 12nd pin, punching type current transformer CTA, the negative pole of the secondary coil of CTB and CTC all is connected to the 13rd and the 14th pin of ox horn seat BINT; Between the interface 7 on communication interface 4 and the control board part, the the 1st and the 4th pin of communication interface conversion chip 2U1 is connected respectively to the 23rd and the 22nd pin of its ox horn seat BINT, is connected to the 21st pin of ox horn seat BINT behind the 2nd and the 3rd pin short circuit of communication interface conversion chip 2U1; Between power supply 8 and the terminal 10, the the 3rd and the 2nd pin of switching power source chip POWER is connected respectively to the 1st and the 2nd pin of 12 line plug formula binding post ANINT, the 5th pin output DC source signal VCC of switching power source chip POWER, for this device provides working power, the power filter of dc power signal VCC in MCU1, uncouple circuit filtering and uncouple after, give the power supply of the single chip circuit in the MCU1 separately; Between the interface 7 on control outlet and idle contact output 9 and the control board part, the 2nd of OC door chip 1U5, the 3rd, the 4th, the 5th, the the 6th and the 7th pin is connected respectively to the 20th of its ox horn seat BINT, the 19th, the 18th, the 17th, the the 16th and the 15th pin, between control outlet and idle contact output 9 and the terminal 10, the coil output of solid state relay SCR2 is drawn signal SCRCONT, and be connected to the 15th pin of OC door chip 1U5, the positive pole output OFFOUTCOM signal of the idle contact of solid state relay SCR2, and be connected to the 1st pin of 10 line plug formula binding post DIOINT, the coil J5A output of mini power relay is drawn signal TCOUT, and be connected to the 14th pin of OC door chip 1U5, the positive pole of the idle contact J5B of mini power relay is drawn signal OFFOUT2, and be connected to the 2nd pin of 10 line plug formula binding post DIOINT, the coil J1B of power relay, J2B, the output of J3B and J4B is drawn signal SCONT1 respectively, SCONT2, SCONT3 and SCONT4, and be connected to the 13rd of OC door chip 1U5 respectively, the 12nd, the the 11st and the 10th pin, the idle contact J1A of power relay, J2A, the two ends of J3A and J4A are drawn signal OUT11 and OUT12 respectively, OUT21 and OUT22, OUT31 and OUT32 and OUT41 and OUT42, and be connected to the 3rd of 10 line plug formula binding post DIOINT respectively, the 4th, the 5th, the 6th, the 7th, the 8th, the the 9th and the 10th pin; Between the interface 7 on interface 7 on the main board and the control board part, two interfaces 7 connect by 26 line flat cables.

Claims (2)

1. traction substation inlet wire phase-lacking protective device, comprise MCU (1), real-time clock (RTC) (2), analog quantity input and conditioning (3), communication interface (4), LED drives (5), LCD interface (6), two interfaces (7), power supply (8), control outlet and idle contact output (9) and terminal (10), it is characterized in that: MCU (1), real-time clock (RTC) (2), LED drives (5), a LCD interface (6) and an interface (7) constitute main board, analog quantity input and conditioning (3), communication interface (4), power supply (8), control outlet and idle contact output (9), terminal (10) and another interface (7) constitute the control board part; MCU (1) adopts 16 single-chip microcomputers with data association processing capacity as CPU, and its 12 built-in bit A/D converters are used to finish the data sampling function of this device; Real-time clock (RTC) (2) is used to this device that clock signal is provided; LED drives (5) lighting by the single-chip microcomputer mouth line driving LED indicator light in the MCU (1); LCD interface (6) is used for liquid crystal display screen is connected with main board; Miniature precision voltage transformer summation current transformer is adopted in analog quantity input and conditioning (3), will input to the A/D sampling channel of the interior single-chip microcomputer of MCU (1) through voltage, the current signal of conditioning, calculates for MCU (1) sampling; Communication interface (4) is used for the Transistor-Transistor Logic level communication signal of the interior single-chip microcomputer of MCU (1) is converted to 485 signals; Power supply (8) provides working power for this device; The adhesive and the release of OC gate control relay is passed through in control outlet and idle contact output (9) by the mouth line of the interior single-chip microcomputer of MCU (1); Terminal (10) is used to introduce all circumscripted power lines, and draws the idle contact output line of all relays in control outlet and the idle contact output (9); Two interfaces (7) are used to connect main board and control board part, connect by flat cable between two interfaces (7).

2. traction substation inlet wire phase-lacking protective device according to claim 1, it is characterized in that: described MCU (1) includes single chip circuit, keyboard interface circuit, memory circuit, CPU program download interface, A/D sampling reference voltage generating circuit and power filter, the circuit of uncoupling, wherein, single-chip microcomputer 1U1 is arranged in the single chip circuit, the 8M crystal oscillator, diode 1D1 and electric capacity 1C3, the model of its single-chip microcomputer 1U1 is DSPIC30F5011, the model of diode 1D1 is IN4148, the single needle interface KEYINT of exclusion 1RP2 and 5 lines is arranged in the keyboard interface circuit, nonvolatile storage 1U3 is arranged in the memory circuit, its model is 2464, the single needle interface 1J1 of 6 lines is arranged in the CPU program download interface, its model is PIN6, in the A/D sampling reference voltage generating circuit three ends adjustable shunting a reference source 3H1 and electric capacity 3E1 and 3C3 are arranged, the model of the adjustable shunting a reference source of its three end 3H1 is TL431, power filter, uncoupling has electric capacity EP1 in the circuit, CP1, CP2 and CP3; Clock chip 1U2, electric capacity 1E1 and 32K crystal oscillator are arranged in the real-time clock (RTC) (2), and the model of its clock chip 1U2 is DS1302; LED drives in (5) exclusion 1RP1 and light-emitting diode 1L1 and 112; The single needle interface LCMINT of triode 1T1 and 20 lines is arranged in the LCD interface (6), and the model of its triode 1T1 is respectively 8050; In analog quantity input and the conditioning (3) current mode voltage transformer and punching type current transformer are arranged, its model is respectively HL88V and HLB99A; Communication interface conversion chip 2U1 is arranged in the communication interface (4), and its model is MAX485; Power supply has switching power source chip POWER in (8), and its model is HAD10-05V12-LFCI; In control outlet and the idle contact output (9) OC door chip 1U5, solid state relay, mini power relay and other four power relays are arranged, wherein, the model of OC door chip 1U5, solid state relay and mini power relay is respectively UL2003, JGX-5FA and JH32F-H, and the model of other four power relays is JH32F-Z; 10 line plug formula binding post DIOINT and 12 line plug formula binding post ANINT are arranged in the terminal (10); Ox horn seat BINT is arranged respectively in two interfaces (7), and its model is IDC26;

Its annexation is: main board, and in MCU (1), between single chip circuit and the keyboard interface circuit, the 1st, the 2nd, the 3rd and the 4th pin of the single needle interface KEYINT of 5 lines is connected respectively to the 52nd, the 53rd, the 54th and the 55th pin of single-chip microcomputer 1U1; Between single chip circuit and the memory circuit, the 5th and the 6th pin of nonvolatile storage 1U3 is connected respectively to the 36th and the 37th pin of single-chip microcomputer 1U1; Between single chip circuit and the CPU program download interface, the 1st, the 4th and the 5th pin of the single needle interface 1J1 of 6 lines is connected respectively to the 7th, the 18th and the 17th pin of single-chip microcomputer 1U1; Between real-time clock (RTC) (2) and the MCU (1), the 5th, the 6th and the 7th pin of clock chip 1U2 is connected respectively to the 62nd, the 61st and the 60th pin of single-chip microcomputer 1U1; LED drives between (5) and the MCU (1), and the negative pole of light-emitting diode 1L1 and 1L2 is connected to the 49th and the 44th pin of single-chip microcomputer 1U1 respectively, and the 4th and the 5th pin of exclusion 1RP1 is connected to the 37th and the 36th pin of single-chip microcomputer 1U1 respectively; Between LCD interface (6) and the MCU (1), the the 4th, the 5th and the 6th pin of the single needle interface LCMINT of 20 lines is connected respectively to the 48th, the 47th and the 46th pin of single-chip microcomputer 1U1, the 17th pin of the single needle interface LCMINT of 20 lines is unsettled, and the base stage of triode 1T1 is connected to the 43rd pin of single-chip microcomputer 1U1 by resistance 1R6; Between interface on the main board (7) and the MCU (1), the the 4th, the 5th, the 6th, the 7th, the 8th, the 9th, the 10th, the 11st and the 12nd pin of its ox horn seat BINT is connected respectively to the 11st, the 12nd, the 13rd, the 14th, the 15th, the 16th, the 21st, the 22nd and the 23rd pin of single-chip microcomputer 1U1, the the 13rd and the 14th pin short circuit of ox horn seat BINT, and be connected to the vref signal output of the interior A/D of MCU (1) sampling reference voltage generating circuit; The control board part, between analog quantity input and conditioning (3) and the terminal (10), current mode voltage transformer UMAPT in analog quantity input and the conditioning (3), the positive pole of the primary winding of UMBPT and UMCPT is connected to the 4th of the interior 12 line plug formula binding post ANINT of terminal (10) respectively, the the 5th and the 6th pin, be connected to the 7th pin of 12 line plug formula binding post ANINT behind its negative pole short circuit, current mode voltage transformer ULAPT, the positive pole of the primary winding of ULBPT and ULCPT is connected to the 9th of the interior 12 line plug formula binding post ANINT of terminal (10) respectively, the the 10th and the 11st pin is connected to the 12nd pin of 12 line plug formula binding post ANINT behind its negative pole short circuit; Between the interface (7) on analog quantity input and conditioning (3) and the control board part, analog quantity input and conditioning (3) are interior from current mode voltage transformer UMAPT, the voltage signal UAINR that the positive pole of the secondary coil of UMBPT and UMCPT is drawn, UBINR and UCINR are respectively behind capacitor filtering, be connected to the 4th of the interior ox horn seat of interface (7) BINT on the control board part respectively, the the 5th and the 6th pin, current mode voltage transformer UMAPT, behind the negative pole short circuit of the secondary coil of UMBPT and UMCPT, be connected to the 13rd and the 14th pin of ox horn seat BINT, from current mode voltage transformer ULAPT, the voltage signal UAINC that the positive pole of the secondary coil of ULBPT and ULCPT is drawn, UBINC and UCINC are respectively behind capacitor filtering, be connected to the 7th of the interior ox horn seat of interface (7) BINT on the control board part respectively, the the 8th and the 9th pin, current mode voltage transformer ULAPT, behind the negative pole short circuit of the secondary coil of ULBPT and ULCPT, be connected to the 13rd and the 14th pin of ox horn seat BINT, from punching type current transformer CTA, the current signal IA that the positive pole of the secondary coil of CTB and CTC is drawn, IB and IC are respectively behind capacitor filtering, be connected to the 10th of the interior ox horn seat of interface (7) BINT on the control board part respectively, the the 11st and the 12nd pin, punching type current transformer CTA, the negative pole of the secondary coil of CTB and CTC all is connected to the 13rd and the 14th pin of ox horn seat BINT; Between the interface (7) on communication interface (4) and the control board part, the the 1st and the 4th pin of communication interface conversion chip 2U1 is connected respectively to the 23rd and the 22nd pin of its ox horn seat BINT, is connected to the 21st pin of ox horn seat BINT behind the 2nd and the 3rd pin short circuit of communication interface conversion chip 2U1; Between power supply (8) and the terminal (10), the the 3rd and the 2nd pin of switching power source chip POWER is connected respectively to the 1st and the 2nd pin of 12 line plug formula binding post ANINT, the 5th pin output DC source signal VCC of switching power source chip POWER, for this device provides working power, the power filter of dc power signal VCC in MCU (1), uncouple circuit filtering and uncouple after, give the power supply of the single chip circuit in the MCU (1) separately; Between the interface (7) on control outlet and idle contact output (9) and the control board part, the 2nd of OC door chip 1U5, the 3rd, the 4th, the 5th, the the 6th and the 7th pin is connected respectively to the 20th of its ox horn seat BINT, the 19th, the 18th, the 17th, the the 16th and the 15th pin, between control outlet and idle contact output (9) and the terminal (10), the coil output of solid state relay SCR2 is drawn signal SCRCONT, and be connected to the 15th pin of OC door chip 1U5, the positive pole output OFFOUTCOM signal of the idle contact of solid state relay SCR2, and be connected to the 1st pin of 10 line plug formula binding post DIOINT, the coil J5A output of mini power relay is drawn signal TCOUT, and be connected to the 14th pin of OC door chip 1U5, the positive pole of the idle contact J5B of mini power relay is drawn signal OFFOUT2, and be connected to the 2nd pin of 10 line plug formula binding post DIOINT, the coil J1B of power relay, J2B, the output of J3B and J4B is drawn signal SCONT1 respectively, SCONT2, SCONT3 and SCONT4, and be connected to the 13rd of OC door chip 1U5 respectively, the 12nd, the the 11st and the 10th pin, the idle contact J1A of power relay, J2A, the two ends of J3A and J4A are drawn signal OUT11 and OUT12 respectively, OUT21 and OUT22, OUT31 and OUT32 and OUT41 and OUT42, and be connected to the 3rd of 10 line plug formula binding post DIOINT respectively, the 4th, the 5th, the 6th, the 7th, the 8th, the the 9th and the 10th pin; Between the interface (7) on interface on the main board (7) and the control board part, two interfaces (7) connect by 26 line flat cables.

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