CN102749540A - Testing device and method for hierarchical controllable shunt reactor valve control system - Google Patents
Testing device and method for hierarchical controllable shunt reactor valve control system Download PDFInfo
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- CN102749540A CN102749540A CN2012102294316A CN201210229431A CN102749540A CN 102749540 A CN102749540 A CN 102749540A CN 2012102294316 A CN2012102294316 A CN 2012102294316A CN 201210229431 A CN201210229431 A CN 201210229431A CN 102749540 A CN102749540 A CN 102749540A
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Abstract
The invention discloses a testing device for a hierarchical controllable shunt reactor valve control system. The testing device comprises a test power supply (Su), inductors (Xs), a three-phase switch (Ks) and a valve control system, wherein the test power supply (Su) is in series connection with the inductors (Xs) and is then connected with the input terminal of the three-phase switch (Ks), any two phases of the output terminal of the three-phase switch (Ks) are respectively in parallel connection with the valve control system and a lightning arrester (M1). Through adjusting the test power supply (Su) and the inductors (Xs) and controlling a thyristor valve (TK1), electrical conditions, before/after capacity adjustment switching and during the process of transient state switching, of various devices in the valve control system are equivalently provided, and the transfer of current between the valve and a circuit breaker in an adjustment process of the valve control system, and the electrical work intensity of the valve and the circuit breaker and the working condition of the valve at a switching stage are then verified.
Description
Technical field
The present invention relates to UHV (ultra-high voltage), extra-high voltage technical field, be specifically related to a kind of test unit and test method of stagewise controllable parallel reactors valve control system.
Background technology
Controllable parallel reactors be solve that reactive voltage in the ultra-high/extra-high voltage transmission system is regulated and over-voltage to one of gordian technique means of contradiction between the different demands of shunt reactor.Controllable parallel reactors can not only be along with the variation of circuit transmission capacity automatically continuously or classification regulate self capacity; And when the circuit underloading; In case generation transient state process; It can be rapidly with capacity regulating to maximal value, the power-frequency overvoltage that fault restriction causes improves the transient stability of system.Simultaneously, also can play certain inhibiting effect, improve the dynamic stability of system to a certain extent for the various concussions of system.Its principle of work is: under the normal situation of system; Can reach idle and purpose voltage-regulation through the capacity of regulating controllable parallel reactors; When system's transient state (like earth fault), cooperate the suitable little reactance of neutral point, can suppress power-frequency overvoltage and secondary arc current; Improve the reclosing success ratio; The safe and stable operation of assurance system, these effects of controllable parallel reactors can effectively improve the on-road efficiency of electrical network, and it also has effects such as the circuit of raising transport capacity, lifting stabilization of power grids level, minimizing grid loss.Now, in UHV transmission, the effect of controllable parallel reactors will be more obvious.
The reliable and stable stagewise controllable parallel reactors valve control system of one cover is the necessary guarantee of controllable parallel reactors equipment safety operation.After the pattern of each thyristor valve, reactor, isolating switch, control system and delivery test are accomplished in the valve control system; Device context before installing is combined them; Before dropping into actual engineering, be necessary to unite by actual condition and test in testing laboratory, can actual challenge devices; Detect and the discovering device problem, solve the hidden danger that exists.
Summary of the invention
To prior art problems; The present invention provides a kind of test unit and test method of stagewise controllable parallel reactors valve control system; Do not need controllable parallel reactors body and capacity regulating reactor to participate in, the preceding test that realizes equivalent actual condition in testing laboratory of dispatching from the factory.
The test unit of a kind of stagewise controllable parallel reactors valve control system provided by the invention comprises experiment power supply Su, inductance Xs, threephase switch Ks, lightning arrester M1 and valve control system; Its improvements are; Said experiment power supply Su primary side is connected with AC power; Its secondary side is connected with said threephase switch Ks input end with said inductance Xs series connection back, said threephase switch Ks output terminal any two parallelly connected with said valve control system and said lightning arrester M1 respectively mutually.
Wherein, said valve control system comprises isolating switch TD1, reactance Xb11 and thyristor valve TK1; Said isolating switch TD1 and said reactance Xb11 series connection back form branch road one, and be parallelly connected with the branch road two that said thyristor valve TK1 forms.
Wherein, said branch road one is provided with the current measurement device CS1 that is used for current detecting and record ripple.
Wherein, said current measurement device CS1 comprises mutual inductor or dc current measurement element.
Wherein, said branch road two is provided with the current measurement device CS2 that is used for current detecting and record ripple.
Wherein, said current measurement device CS2 comprises mutual inductor or dc current measurement element.
Wherein, said test unit comprises voltage measurement element PS; Said voltage measurement element PS is parallelly connected with said valve control system.
Wherein, said voltage measurement element comprises voltage transformer (VT) or voltage divider.
Wherein, the said experiment power supply Su output terminal said inductance Xs that all connects; Said inductance Xs is connected with said threephase switch again.
Wherein, said experiment power supply Su comprises generator or transformer.
Wherein, said inductance Xs is a controllable impedance.
The present invention is based on the test method of the above-mentioned test unit that another purpose provides, its improvements are that said method comprises the steps:
(1) output voltage of the said experiment power supply Su of adjusting makes the magnitude of voltage of said threephase switch output terminal output and the thyristor valve locking in the stagewise controllable parallel reactors, and the magnitude of voltage that bore at two ends when isolating switch broke off equates;
(2) regulate the capability value of said inductance Xs, the current value that said thyristor valve flows through when making thyristor valve conducting and the isolating switch disconnection in the short-circuit current value that flows through said inductance Xs and the said stagewise controllable parallel reactors equates;
(3) break off said isolating switch TD1 and closed said threephase switch Ks; Send out and touch said thyristor valve TK1 conducting and closed said isolating switch TD1; After the time that said thyristor valve TK1 conducting set, said thyristor valve TK1 of locking, and through said current measurement device CS1, CS2 and said voltage measurement element PS record related data and record ripple;
(4) by the allowable clearance time of setting, circulation step (3) is measured the thyristor valve hot(test)-spot temperature with infrared method or contact method;
(5) closed said isolating switch TD1 and said threephase switch Ks; Trigger said thyristor valve TK1 conducting and break off said isolating switch TD1; After the time of said thyristor valve TK1 conducting setting; Said thyristor valve TK1 of locking, and through said current measurement device CS1, CS2 and said voltage measurement element PS record related data and record ripple;
(6) by the allowable clearance time of setting, circulation step (5) is measured the thyristor valve hot(test)-spot temperature with infrared method or contact method.
Wherein, the data that record is relevant comprise:
A) said isolating switch TD1 electric current, said thyristor valve TK1 electric current and thyristor valve TK1 terminal voltage waveform;
B) said thyristor valve TK1 shutoff voltage overshoot data, the superpotential spike maximal value that promptly thyristor valve occurred from the moment that opens to shutoff in thyristor valve TK1 terminal voltage waveform;
C) trigger said thyristor valve TK1 and begin conducting constantly, to the influence of conducting current dc component;
D) said thyristor valve TK1 goes up each element hot(test)-spot temperature value in single test at least.
With the prior art ratio, beneficial effect of the present invention is:
The present invention does not need controllable parallel reactors body and capacity regulating reactor to participate in, and inserts power supply Su and regulative reactance Xs, and Su voltage can be adjusted, and changes trial voltage, examination valve control system voltage adaptation property; And insert through regulating the Xs value in power supply output, change test current, examination valve control system electric current adaptability; All realize the test of equivalent actual condition before dispatching from the factory in testing laboratory;
The present invention can simulate the actual electric condition of each equipment of controllable parallel reactors valve control system capacity regulating front and back, makes test effect meet actual condition more;
The present invention does not need special test equipment, and the hookup condition of utilizing the ordinary test chamber to impact transformer or generator can realize, provides cost savings.
The present invention can check valve control system work process in, the actual condition of circuit breaker current, thyristor valve voltage, electric current and the overshoot of thyristor valve shutoff voltage, check design, make and assembling in problem.
The present invention testing laboratory capable of using power-supply device; The simulation valve control system moves at the scene; Equivalence provides each equipment each equipment electric condition in capacity regulating switching front and back and switching transient state process in the valve control system, the electrical installation intensity of transfer, switch step valve and the isolating switch of electric current between valve and isolating switch, the working condition of valve in the checking valve control system adjustment process.
The present invention can examine with actual condition each equipment before dispatching from the factory, and the problem of discovering device reduces engineering risk greatly early.
Description of drawings
Fig. 1 is schematic diagram of stagewise controllable parallel reactors provided by the invention.
Fig. 2 is a stagewise controllable parallel reactors valve control system test unit circuit diagram provided by the invention.
Embodiment
Do further to specify below in conjunction with the accompanying drawing specific embodiments of the invention.
The test unit of a kind of stagewise controllable parallel reactors valve control system that present embodiment proposes is as shown in Figure 2, comprises experiment power supply Su, inductance Xs, threephase switch Ks, lightning arrester M1 and valve control system; Said experiment power supply Su is generator or transformer (transformer and power supply join, and supply power through regulating proportioning), every phase output terminal inductance Xs that all connects; Said inductance Xs is connected with the input end of said threephase switch Ks again, said threephase switch Ks output terminal any two parallelly connected with said valve control system and said lightning arrester M1 respectively mutually.The inductance Xs of present embodiment is a controllable impedance.The effect of its protection thyristor valve of lightning arrester M1.
Wherein, said valve control system comprises isolating switch TD1, reactance Xb11 and thyristor valve TK1; Said isolating switch TD1 and said reactance Xb11 series connection back form branch road one, and be parallelly connected with the branch road two that said thyristor valve TK1 forms.Said branch road one is provided with the current measurement device CS1 that detects electric current, and it can adopt mutual inductor, also can adopt dc current measurement element such as Hall current sensor etc.Said branch road two is provided with the current measurement device CS2 that detects electric current, and it can adopt dc current measurement element such as Hall current sensor etc.
On this, present embodiment also comprises voltage measurement element PS; The parallelly connected voltage that is used to detect valve control system of said voltage measurement element PS with said valve control system.
Wherein, said test unit comprises lightning arrester M1; Said lightning arrester M1 is parallelly connected with said valve control system.
According to said apparatus, present embodiment provides a kind of test method, and test unit is made an experiment.Before experiment, obtain two kinds of data according to stagewise controllable parallel reactors principle earlier.The single-phase figure of stagewise controllable parallel reactors set of equipments that present embodiment proposes is as shown in Figure 1; Comprise controllable parallel reactors body CSR, valve control system, capacity configuration reactor Xb1, Xb2; Valve control system is connected on body CSR control winding (low pressure winding; The right side) on, is connected in parallel between the high-pressure side and ground of capacity configuration reactor Xb1, Xb2, mainly realizes the controllable parallel reactors volume controlled.Wherein, thyristor valve TK1, reactance Xb11 and isolating switch TD1 constitute a valve control system 1, and thyristor valve TK12, reactance Xb12 and isolating switch TD2 constitute another valve control system 2.Through the following data of Theoretical Calculation: ask for the MWV that thyristor valve TK1 bears, as the required experiment power supply Su output voltage of present embodiment valve control system 1 (thyristor valve TK1, reactance Xb11 and isolating switch TD1) test; Ask for the maximum operating currenbt that flows through thyristor valve TK1, (thyristor valve TK1, reactance Xb11 and isolating switch TD1) tests required test current as present embodiment valve control system 1, and this test current is adjusted to suitable numerical value through inductance Xs and obtained.In like manner, ask for the numerical value that the required experiment power supply Su output voltage of valve control system 2 (thyristor valve TK2, reactance Xb12 and isolating switch TD2) test and valve control system 2 (thyristor valve TK2, reactance Xb12 and isolating switch TD2) are tested required test current and corresponding inductance Xs.
The MWV acquiring method that thyristor valve TK1 bears is: when valve control system 1 and valve control system 2 all break off, i.e. and TK1, TD1, TK2, under the equal disconnection of TD2, the voltage that thyristor valve TK1 bears.
The MWV acquiring method that thyristor valve TK2 bears is: when valve control system 1 and valve control system 2 all break off, i.e. and TK1, TD1, TK2, under the equal disconnection of TD2, the voltage that thyristor valve TK2 bears.
The maximum operating currenbt acquiring method that flows through thyristor valve TK1 is: when the TK1 conducting, and TD1, TK2 under the equal disconnection of TD2, flows through the electric current of thyristor valve TK1.
The maximum operating currenbt acquiring method that flows through thyristor valve TK2 is: when the TK2 conducting, and TD1, TK1 under the equal disconnection of TD2, flows through the electric current of thyristor valve TK1.
The test method of present embodiment proposes a kind of test unit to stagewise controllable parallel reactors valve control system; Respectively each group valve control system 1 and valve control system 2 are carried out by low capacity to high capacity adjusting test with by the adjusting test of high capacity to low capacity; With valve control system 1 is that the test procedure of example is following, and the test procedure of valve control system 2 is identical.
(1) regulates the output voltage of experiment power supply Su described in Fig. 2, the MWV of the thyristor valve TK1 of the valve control system 1 in the stagewise controllable parallel reactors among output voltage values and Fig. 1 is equated;
(2) regulate the inductance value of inductance Xs described in Fig. 2, the maximum operating currenbt value through the thyristor valve TK1 of the valve control system 1 in the stagewise controllable parallel reactors among the short-circuit current value of said inductance Xs short circuit and Fig. 1 is equated;
(3) carry out regulating test by low capacity to high capacity, isolating switch TD1 separating brake, valve TK1 prepare before carrying out and triggering before the test.Closed said threephase switch Ks; After stable, send out simultaneously and trigger thyristor valve TK1, close the TD1 order, after the TK1 triggering and conducting stipulated time; Locking-valve TK1, and through said current measurement device CS1, CS2 and said voltage measurement element PS record related data and record ripple.
(4) by the design allowable clearance time, circulation step (3) makes an experiment repeatedly continuously, as 10 times, measures the thyristor valve hot(test)-spot temperature with infrared method or contact method simultaneously.
(5) carry out regulating test by high capacity to low capacity, isolating switch TD1 is in closing position before the test, and valve TK1 prepares before carrying out and triggering; Closed said threephase switch Ks; After stable, send out simultaneously and trigger thyristor valve TK1, divide TD1 order, after the TK1 triggering and conducting stipulated time; Locking-valve TK1, and through said current measurement device CS1, CS2 and said voltage measurement element PS record related data and record ripple.
(6) by the design allowable clearance time, circulation step (5) makes an experiment repeatedly continuously, as 10 times, measures the thyristor valve hot(test)-spot temperature with infrared method or contact method simultaneously.
More than, test procedure (3) also can merge to step (6) carries out as follows: isolating switch TD1 separating brake, valve TK1 prepare before carrying out and triggering before the test; Closed said threephase switch Ks after stablizing, sends out simultaneously and triggers thyristor valve TK1, closes the TD1 order, after the TK1 triggering and conducting stipulated time, and locking-valve TK1; Behind the certain hour, send out simultaneously and trigger thyristor valve TK1, divide TD1 order at interval, after the TK1 triggering and conducting stipulated time, locking-valve TK1, a testing cycle finishes; Write down related data and record ripple through said current measurement device CS1, CS2 and said voltage measurement element PS.By the design allowable clearance time, carry out said testing cycle repeatedly continuously, as 10 times, measure the thyristor valve hot(test)-spot temperature with infrared method or contact method simultaneously.
Wherein, related data comprises:
A) said isolating switch TD1 electric current, said thyristor valve TK1 electric current and thyristor valve TK1 terminal voltage waveform;
B) said thyristor valve TK1 shutoff voltage overshoot data, the superpotential spike maximal value that promptly thyristor valve occurred from the moment that opens to shutoff in thyristor valve TK1 terminal voltage waveform;
C) trigger said thyristor valve TK1 and begin conducting constantly, to the influence of conducting current dc component;
D) said thyristor valve TK1 goes up each element hot(test)-spot temperature value in single test at least.
Respectively each step valve is carried out by low capacity to high capacity adjusting test with by the adjusting test of high capacity to low capacity; Can examine thyristor valves at different levels and the isolating switch course of work under virtual voltage and current conditions, check the problem in each device design of valve control system, manufacturing and the assembling.Through to the test figure record analysis, can examine the real work situation of each equipment, and the verification technique designed rationality.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although the present invention has been carried out detailed explanation with reference to the foregoing description; Under the those of ordinary skill in field be to be understood that: still can specific embodiments of the invention make amendment or be equal to replacement; And do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (13)
1. the test unit of a stagewise controllable parallel reactors valve control system comprises experiment power supply (Su), inductance (Xs), threephase switch (Ks), lightning arrester (M1) and valve control system; It is characterized in that; Said experiment power supply (Su) primary side is connected with AC power; Its secondary side and said inductance (Xs) series connection back is connected with said threephase switch (Ks) input end, said threephase switch (Ks) output terminal any two parallelly connected with said valve control system and said lightning arrester (M1) respectively mutually.
2. test unit as claimed in claim 1 is characterized in that, said valve control system comprises isolating switch (TD1), reactance (Xb11) and thyristor valve (TK1); Said isolating switch (TD1) and said reactance (Xb11) series connection back form branch road one, and be parallelly connected with the branch road two that said thyristor valve (TK1) forms.
3. test unit as claimed in claim 2 is characterized in that, said branch road one is provided with the current measurement device (CS1) that is used for current detecting and record ripple.
4. test unit as claimed in claim 3 is characterized in that, said current measurement device (CS1) comprises mutual inductor or dc current measurement element.
5. test unit as claimed in claim 2 is characterized in that, said branch road two is provided with the current measurement device (CS2) that is used for current detecting and record ripple.
6. test unit as claimed in claim 2 is characterized in that, said current measurement device (CS2) comprises mutual inductor or dc current measurement element.
7. test unit as claimed in claim 1 is characterized in that, said test unit comprises voltage measurement element (PS); Said voltage measurement element (PS) is parallelly connected with said valve control system.
8. test unit as claimed in claim 1 is characterized in that said voltage measurement element comprises voltage transformer (VT) or voltage divider.
9. test unit as claimed in claim 1 is characterized in that, said experiment power supply (Su) the output terminal said inductance (Xs) of all connecting; Said inductance (Xs) is connected with said threephase switch again.
10. like claim 1 or 8 arbitrary described test units, it is characterized in that said experiment power supply (Su) comprises generator or transformer.
11. test unit as claimed in claim 1 is characterized in that, said inductance (Xs) is a controllable impedance.
12. the test method based on the arbitrary described test unit of claim 1-11 is characterized in that said method comprises the steps:
(1) regulate the output voltage of said experiment power supply (Su), make the magnitude of voltage and the thyristor valve locking in the stagewise controllable parallel reactors of said threephase switch output terminal output, the magnitude of voltage that bore at two ends when isolating switch broke off is equal;
(2) regulate the capability value of said inductance (Xs), the current value that said thyristor valve flow through when thyristor valve conducting and isolating switch in the short-circuit current value that flows through said inductance (Xs) and the said stagewise controllable parallel reactors broken off equates;
(3) break off said isolating switch (TD1) and closed said threephase switch (Ks); Send out and touch said thyristor valve (TK1) conducting and closed said isolating switch (TD1); After the time that said thyristor valve (TK1) conducting is set, said thyristor valve of locking (TK1), and write down related data and record ripple through said current measurement device (CS1, CS2) and said voltage measurement element (PS);
(4) by the allowable clearance time of setting, circulation step (3) is measured the thyristor valve hot(test)-spot temperature with infrared method or contact method;
(5) closed said isolating switch (TD1) and said threephase switch (Ks); Trigger said thyristor valve (TK1) conducting and break off said isolating switch (TD1); After the time that said thyristor valve (TK1) conducting is set; Said thyristor valve of locking (TK1), and through said current measurement device (CS1, CS2) and said voltage measurement element (PS) record related data and record ripple;
(6) by the allowable clearance time of setting, circulation step (5) is measured the thyristor valve hot(test)-spot temperature with infrared method or contact method.
13. test method as claimed in claim 12 is characterized in that, the data that record is relevant comprise:
A) said isolating switch (TD1) electric current, said thyristor valve (TK1) electric current and thyristor valve (TK1) terminal voltage waveform;
B) said thyristor valve (TK1) shutoff voltage overshoot data, the superpotential spike maximal value that promptly thyristor valve occurred from the moment that opens to shutoff in thyristor valve (TK1) terminal voltage waveform;
C) trigger said thyristor valve (TK1) and begin conducting constantly, to the influence of conducting current dc component;
D) said thyristor valve (TK1) is gone up each element hot(test)-spot temperature value in single test at least.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021868A (en) * | 2015-07-20 | 2015-11-04 | 国家电网公司 | Simple method for measuring high-voltage circuit breaker switching-on overvoltage on site |
| CN106771904A (en) * | 2016-11-30 | 2017-05-31 | 中国电力科学研究院 | A kind of system and method for carrying out impact test to controllable arrester in extra-high voltage environment based on sequential |
| CN109709385A (en) * | 2019-01-15 | 2019-05-03 | 杭州银湖电气设备有限公司 | Magnet controlled reactor exciting current monitoring device and method based on Hall transformer |
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| CN201130240Y (en) * | 2007-11-08 | 2008-10-08 | 中国电力科学研究院 | Experimental device for synthesizing high pressure series thyristor valve |
| CN102074962A (en) * | 2010-12-30 | 2011-05-25 | 中电普瑞科技有限公司 | Combination switch type step controllable shunt reactor |
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2012
- 2012-07-03 CN CN201210229431.6A patent/CN102749540B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130240Y (en) * | 2007-11-08 | 2008-10-08 | 中国电力科学研究院 | Experimental device for synthesizing high pressure series thyristor valve |
| CN102074962A (en) * | 2010-12-30 | 2011-05-25 | 中电普瑞科技有限公司 | Combination switch type step controllable shunt reactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021868A (en) * | 2015-07-20 | 2015-11-04 | 国家电网公司 | Simple method for measuring high-voltage circuit breaker switching-on overvoltage on site |
| CN106771904A (en) * | 2016-11-30 | 2017-05-31 | 中国电力科学研究院 | A kind of system and method for carrying out impact test to controllable arrester in extra-high voltage environment based on sequential |
| CN109709385A (en) * | 2019-01-15 | 2019-05-03 | 杭州银湖电气设备有限公司 | Magnet controlled reactor exciting current monitoring device and method based on Hall transformer |
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