CN207882364U - High voltage direct current converter system simulates live detection complexes - Google Patents
High voltage direct current converter system simulates live detection complexes Download PDFInfo
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- CN207882364U CN207882364U CN201820333324.0U CN201820333324U CN207882364U CN 207882364 U CN207882364 U CN 207882364U CN 201820333324 U CN201820333324 U CN 201820333324U CN 207882364 U CN207882364 U CN 207882364U
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Abstract
High voltage direct current converter system simulates live detection complexes, including Y y0 wiring step-up transformers (1), the clamp on amperemeter insulating support (3) being installed on Y y0 wiring step-up transformers and the clamp on amperemeter (2) being installed on clamp on amperemeter insulating support, induction voltage regulator (4), the three-phase automatic coupling voltage regulator (5) of simulation input synchronizing voltage, intelligent three-phase phase voltammetric meter (6), voltmeter (7), DC load resistance box (8) for checking all exchange second loop return wiring correctness.The utility model may be implemented to simulate DC converter system and charging operation state and is detected to parameters, to find design, construction, debug there are the problem of, it is horizontal to improve direct current transportation safe and stable operation comprehensively.
Description
Technical field
The utility model is related to D.C. high voltage transmission detection device technology fields.
Background technology
In HVDC transmission system, alternating current is realized by the commutation system that converter power transformer forms together with converter valve
Mutual transformation between direct current is equipment most crucial in HVDC transmission system, is HVDC transmission system peace
The basis of full stable operation, primary, secondary circuit design, construction correctness, will directly determine the stabilization of direct current transportation
And safety.First, commutation system is in the core position that AC and DC voltage mutually converts, and scene must trigger suitable according to converter valve
Sequence is different, by once mounting wiring, by six single-phase converter power transformer first windings be connected as Y0/Y wiring, Y0/D11 or
Y0/D5 wiring, once mounting wiring is complicated, and correctness lacks effective verification.Secondly, converter power transformer ontology ac circuit
Test point it is numerous.The first casing of the existing net of converter power transformer, the last casing of net, and have valve side star-like connection head end casing, end set
Pipe, valve side Angle connection head end casing, end casing, alternating current, voltage circuit should consider and net side harmonics, survey
The cooperation of amount, metering etc. ensures the accurate fit with valve side converter Control, protection system again；Related secondary returning in addition
Road Site Design installation connection type is various.Ac circuit secondary cable generally all becomes ontology secondary wiring terminals box via the change of current
→ ontology transfer box → wind cooling control box → three-phase central console → measurement control device.Secondary circuit in-site installation connection type has
Terminal connection, aviation plug connection, then connected to terminal, second interface element is more, during design, installation wiring easily
Leave very hidden circuit defect.Again, the convertor unit of the pulsation quadruple valve of DC transmission engineering generally use 9 or dual valve
Form, each single valve are connected in series by dozens of thyristor pole, are in high potential；Converter valve Control protection system is the change of current
Valve remotely monitor control terminal decides the rectification (inversion), startup, stoppage in transit function of thyristor, is in ground potential, is current conversion station
Core equipment.Optical fiber connection is all made of between converter valve and control system, by transmission burst encoded signal to converter valve
Operating status monitored and controlled.Design, construction of the wiring situation and commutation feature of converter valve complexity to control protection
Prodigious challenge is brought with debugging, the work careless omission of any link can all be buried to the safe and stable operation of DC transmission system
Lower hidden danger, it is more demanding to the quality level of design, construction, debugging.
Core status and importance based on commutation system in HVDC transmission system, in addition commutation system one
Secondary, secondary installing wiring complexity and converter valve can not carry out live detection before putting into operation, logical only in accordance with the prior art
The means such as circuit connection verification, local test are crossed, have been difficult to find that primary commutation system, secondary installing wiring, converter valve are touched
The defects of sending out angle mistake, so as to cause entire current conversion station during putting into operation, put into operation interruption or postponement or even equipment
Damage or systematic failures.Before high voltage direct current electrification, a kind of complete set of equipments of commutation system whole group simulation electrification of scene urgent need and inspection
Survey method.
Invention content
Purpose of the utility model is to solve the deficiencies in the prior art, realizes and electrification fortune is simulated to DC converter system
Row state is simultaneously detected parameters, to find design, construction, debug there are the problem of, improve direct current transportation comprehensively
Safe and stable operation is horizontal, provides a kind of high voltage direct current converter system simulation live detection complexes.
The purpose of this utility model is realized by the following method：
High voltage direct current converter system simulates live detection complexes, including Y-y0 wiring step-up transformer, is installed in Y-
Clamp on amperemeter insulating support on y0 wiring step-up transformers and the pincerlike electric current being installed on clamp on amperemeter insulating support
Table, induction voltage regulator, the three-phase automatic coupling voltage regulator of simulation input synchronizing voltage, for checking all exchange second loop return wirings just
Intelligent three-phase phase voltammetric meter, voltmeter, the DC load resistance box of true property, connection structure are：Its connection structure is：In Y-
Clamp on amperemeter, Y-y0 wiring boosting transformation are connected by clamp on amperemeter insulating support on y0 wiring step-up transformer leading-out terminals
The outlet of device is connected across clamp on amperemeter with the net side entrance bushing of 500kV converter power transformers, the valve side of converter power transformer
Leading-out terminal is connect with converter valve, and converter valve is in parallel with DC load resistance box, indirectly in converter valve and DC load resistance box
Ground；The input terminal of Y-y0 wiring step-up transformers be also respectively connected with induction voltage regulator output end and three-phase automatic coupling voltage regulator it is defeated
Enter end, the input terminal of wherein induction voltage regulator is connected to 0.4kv experiment power supplies, and the output end of three-phase automatic coupling voltage regulator, which is connected to, to be changed
The small lower end being spaced apart of CVT secondary voltages in rheology net side TV terminal boxs；The voltmeter is connected to Y-y0 wiring boosting change
It between depressor and induction voltage regulator and is grounded, or is connected between Y-y0 wiring step-up transformer and three-phase automatic coupling voltage regulator and connects
Ground.
The utility model is to examine primary converter power transformer, converter valve AC and DC circuit system, secondary installing wiring, control
Mutually matched correctness is target between protection system processed, can complete following detection work：
(1) change of current becomes exchange primary connection correctness detection；
(2) change of current becomes exchange secondary connection correctness detection；
(2) converter valve triggering synchronizing voltage correctness detection；
(3) converter valve triggering control voltage correctness detection；
(4) change of current becomes primary voltage phase sequence and the detection of valve group trigger sequence relationship correctness；
(5) valve control system monitoring function correctness detects；
(6) 9 pulse conversion devices export correctness detection.
The utility model provides a kind of complete set of equipments and detection method of commutation system whole group simulation electrification, it can be found that
Commutation system is primary, secondary installing wiring, converter valve trigger angle mistake the defects of, to avoid entire current conversion station from putting into operation
In the process, put into operation interruption or postponement, avoids equipment damage or systematic failures.
The content of the utility model is expanded on further with reference to the accompanying drawings of the specification.
Description of the drawings
Fig. 1 is the composition schematic diagram that high voltage direct current converter system simulates live detection complexes；
Fig. 2 is that DC converter system simulates live detection experiment main wiring diagram；
Fig. 3 is that DC converter system simulates live detection experiment synchronizing voltage main wiring diagram.
Specific implementation mode
High voltage direct current converter system as shown in Figure 1 and Figure 2 simulates live detection complexes, including Y-y0 wiring boosting
Transformer 1, the clamp on amperemeter insulating support 3 being installed on Y-y0 wiring step-up transformers and be installed on clamp on amperemeter insulation
The three-phase automatic coupling voltage regulator 5 of clamp on amperemeter 3, induction voltage regulator 4, simulation input synchronizing voltage on holder, for checking
There are intelligent three-phase phase voltammetric meter 6, voltmeter 7, the DC load resistance box 8 of exchange second loop return wiring correctness, connection
Structure is：Clamp on amperemeter 2, Y- is connected by clamp on amperemeter insulating support 3 on 1 leading-out terminal of Y-y0 wiring step-up transformer
The outlet of y0 wiring step-up transformer 1 is connected across clamp on amperemeter 2 with the net side entrance bushing of 500kV converter power transformers 10
Connect, valve side leading-out terminal and the converter valve 11 of converter power transformer) connect, converter valve and DC load resistance box 8) in parallel, in the change of current
Valve and DC load resistance box indirectly；The input terminal of Y-y0 wiring step-up transformer 1 is also respectively connected with induction voltage regulator 4
The input terminal of the input terminal of output end and three-phase automatic coupling voltage regulator 5, wherein induction voltage regulator 4 is connected to 0.4kv experiment power supplies 9,
The output end of three-phase automatic coupling voltage regulator 5 is connected to the change of current and becomes the small lower end being spaced apart of CVT secondary voltages in net side TV terminal boxs 12；
The voltmeter 7 is either connected between Y-y0 wiring step-up transformer 1 and induction voltage regulator 4 and is grounded or is connected to Y-y0 and connects
Between line step-up transformer 1 and three-phase automatic coupling voltage regulator 5 and it is grounded.
Test voltage due to being applied to change of current change net side is relatively low (generally 2000-4000V), the secondary electricity of net side TV
Pressure is insufficient as the synchronous voltage signal of control system, in experiment, is synchronized by 5 simulation input of three-phase automatic coupling voltage regulator
Voltage, it is desirable that input voltage three-phase symmetrical, amplitude are bis- rated voltages of TV, and phase is identical as change of current change voltage on line side, accidentally
Difference is no more than 1 °, the wiring as shown in Figure 3 of synchronizing voltage system.
It is detected using high voltage direct current converter system described in the utility model simulation live detection complexes, it is true
Guarantor's primary connection is correct, and the p-wire wiring for measuring recording is correct, sets count up into from the background, and valve cooling system is in normal operation shape
State, it is interim to remove drainage thread that exchange 500kV GIS become to the change of current and to disconnect secondary voltage in change of current change net side TV terminal boxs small
It is spaced apart, can starts to detect after the above measure confirmation is errorless, detection follows the steps below：
A. 0.4kV experiment power supplies 9 are closed, determine that experiment power supply phase sequence is correct, induction voltage regulator 4 and Y-y0 wiring boosting become
1 primary side pair side phase sequence of depressor is normal；
B. induction voltage regulator 4 is operated, voltmeter 7 is placed between Y-y0 wiring step-up transformer 1 and induction voltage regulator 4
And be grounded, observed reading value, stop pressure regulation after reaching required voltage value；When voltage is adjusted to proper level, exchange rheology pressure
Device 10 charges, and checks the voltage of 10 net side CVT13 secondary voltages of converter power transformer and 10 value side bushing divider of converter power transformer
Phase sequence and amplitude are correct (not having trigger pulse)；
C. operation three-phase automatic coupling voltage regulator 5 is adjusted exports synchronizing voltage to control system, and voltmeter 7 is placed in Y-y0 and is connect
It between line step-up transformer 1 and three-phase automatic coupling voltage regulator 5 and is grounded, observed reading value so that the line synchro voltage value is
57.74V, then by a set-up of control system of converter power transformer 10 be operating status (due to Y-y0 wiring step-up transformer 1
Capacity limit can only support a control system, when experiment after the completion of change to another control system)；
D. after above-mentioned status checkout is normal, number is set by software to experiment valve group Control protection system operating status and is tried
Setting is tested, allows converter valve 11 to be in rectification state, while by the setting of whole system software, realizes and converter valve is touched in difference
Send out the unlock under the α of angle and lock operation (wherein the setting of various parameters can as possible dry run state)；
E. at this moment DC load case 8 will charge, and have electric current to pass through in entire circuit, and observation clamp on amperemeter 2 reads and remembers
Then record uses intelligent three-phase phase voltammetric meter 6 to check the correctness of all exchange secondary circuit (voltage and current circuit) wiring；
F. DC voltage, current waveform and the converter power transformer net side exported by comparing converter power transformer 10 synchronizes electricity
The waveform of pressure, Trigger Angle, the change of current become net side and valve side mutual inductor secondary current, voltage magnitude, phase-detection, realize exchange rheology
Depressor is primary, secondary device operating mode comprehensive inspection, it is ensured that entire commutation system design and primary, secondary installing correctness；
G. experiment is completed, and closes grounding switch after open test power supply, removes all pressure regulators, boosting becomes, CVT connections
Case checks corresponding set letter to the interim connection in the temporary cable of control system synchronizing voltage and all other control system
Number and restore it as state before detection.
Claims (1)
1. high voltage direct current converter system simulates live detection complexes, which is characterized in that including Y-y0 wiring step-up transformers
(1), the clamp on amperemeter insulating support (3) that is installed on Y-y0 wiring step-up transformers and it is installed on clamp on amperemeter insulation branch
The three-phase automatic coupling voltage regulator (5) of clamp on amperemeter (2), induction voltage regulator (4), simulation input synchronizing voltage on frame, for examining
Look into intelligent three-phase phase voltammetric meter (6), voltmeter (7), the DC load resistance box of all exchange second loop return wiring correctness
(8), connection structure is：It is connected by clamp on amperemeter insulating support (3) on Y-y0 wiring step-up transformer (1) leading-out terminal
The outlet of clamp on amperemeter (2), Y-y0 wiring step-up transformer (1) passes through clamp on amperemeter (2) and 500kV converter power transformers
(10) net side entrance bushing is connected, and the valve side leading-out terminal of converter power transformer is connect with converter valve (11), converter valve and direct current
Load resistance box (8) is in parallel, converter valve and DC load resistance box indirectly；Y-y0 wiring step-up transformer (1) it is defeated
Enter the input terminal that end is also respectively connected with the output end and three-phase automatic coupling voltage regulator (5) of induction voltage regulator (4), wherein induction voltage regulator
(4) input terminal is connected to 0.4kv experiment power supplies (9), and the output end of three-phase automatic coupling voltage regulator (5) is connected to the change of current and becomes net side TV
The small lower end being spaced apart of CVT secondary voltages in terminal box (12)；The voltmeter (7) is connected to Y-y0 wiring step-up transformers
(1) it between induction voltage regulator (4) and is grounded, or is connected to Y-y0 wiring step-up transformer (1) and three-phase automatic coupling voltage regulator (5)
Between and be grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820333324.0U CN207882364U (en) | 2018-03-12 | 2018-03-12 | High voltage direct current converter system simulates live detection complexes |
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| CN201820333324.0U CN207882364U (en) | 2018-03-12 | 2018-03-12 | High voltage direct current converter system simulates live detection complexes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169606A (en) * | 2018-03-12 | 2018-06-15 | 云南送变电工程有限公司 | High voltage direct current converter system simulates live detection complexes and its detection method |
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2018
- 2018-03-12 CN CN201820333324.0U patent/CN207882364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169606A (en) * | 2018-03-12 | 2018-06-15 | 云南送变电工程有限公司 | High voltage direct current converter system simulates live detection complexes and its detection method |
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