GB/T 12980-1991 General technical requirements and test methods for ship power stations
Some standard content:
rc 621.311.7: 629-12
National Standard of the People's Republic of China
G/T 12960-- 91
General technical requirement and testing method for marine power plant19910606issued
State Technical Supervision Bureau
1992.03-01implemented
National Standard of the People's Republic of China
General technical requirements and test methods for marine power plantsGeneral lechnical requlreiment andtesing tnethod for merine power plant: Subject content and applicable scope
In the planning of the East [ship cattle on the station transfer performance indicators and its test methods, GA/1:298C—91
Water is suitable for idle quality sales of the United States is the station hereinafter referred to as self-powered station), should be stopped by the power station to form a low-speed power system. 2 Reference standards
6B3171--83 General rules for single-stroke marine power system test and navigation trial 3 Terminology
Accept the small amount of electric energy generated by the dry power generation. The system is used to control the power generation, that is, to effectively protect the power supply and expand the power supply. 3.2 Emergency distribution board
receives the electric energy output by the main generator and distributes it to the attached and protected self-contained equipment 3.3 Auxiliary power station
is composed of the main generator set and the main distribution system as well as the attached facilities and control devices to supply other systems 3. Emergency power supply system
is composed of the main generator set and the total distribution system as well as the attached control devices 3.5 Unbalanced AC load
The difference between the actual load rate of each phase and the total average load rate, y=
-actual load current of the first phase, A,
-rated current of the first phase, Ar
2 Total actual load current.A;
—emergency line current A.
3. Heat regulation accuracy
System voltage high or minimum emergency rate range rn× 100%
Where: —System voltage high or minimum emergency rate HzJNSystem rated frequency, H.
Approved by China Technical Supervision Bureau on June 26, 1991 (2)
1992-03-0: Implementation
3.7 System voltage state change
GB/T129891
System steady state minimum voltage zone and overall voltage range, system voltage resolution! ignition, xIcox
Where:! —System service minimum voltage. 1tn System rated voltage, V,
4 Classification of power stations
4.1 According to the current classification, it can be divided into two major categories: AC power stations, 4.2 According to the degree of automation, it can be divided into dynamic, dynamic, basic and non-dynamic types. 4.3 Ten major section numbering methods for power stations:
. 3.1 Disassembly and assembly of generator sets
Division of meaning
Work! Variant code or its local code
Group classification code
Basic type is used, dynamic type is used for 7, emergency type is used to indicate the rated power of the unit, used to indicate wattage. Current type code
AC is used for J, and current is used for
Group service code
Diesel generator is used for red5.1.2
Tilt and rigging:
15 emergency power station is 22.5″:
Longitudinal regulation 1.5″, emergency center station is 10°
22.
GB/T 12980—91
5..3 It should be able to withstand the impact of the ship's positive and negative force when it is in operation. 5.1.4 It should be able to withstand the influence of humid air, salt, mist, and condensation. 5.21 Method
5.2.1 The power supply should be able to be used for a long time in the environment listed in Article 4.1. 5.2.2 The emergency power supply should not be used as a mooring power station and should be designed according to the short-time working system. Its continuous working time should comply with the provisions of the cruise ship level and extended construction regulations.
5.3 Power system
5.5-1 AC adopts 3-phase three-wire insulation system, the insulation voltage and frequency are 3505UHz:449V.H2t: 1) 41050H2 is only for sale. 5.3.2 Mutual current uses double-wire insulation system, the system rated voltage is 230V. 5.3.3 If the line system and system voltage level have other requirements, the rated voltage will be selected according to the relevant provisions of the current standard 3.
5.4 Power supply quality
The bus voltage state change should be within 5~2.5% range and the full cutoff should be within 2.:% range! a.
The current should be reduced by more than 16V, the voltage should not exceed 2C during combustion, and the duration should not exceed 1.5V; b.
The AC voltage should be within the range of 16V. For a power supply system with a power unit of 21W in a power station, its waveform distortion rate should be less than 7%; c.
The waveform distortion rate of a power supply system with a power unit of 10-24kW should not exceed 10%. 5.4.2 Frequency:
For power supply systems with frequency regulation devices, the net steady-state frequency change of the power station shall not exceed ± 1% of the station b. For power supply systems with frequency regulation devices, the regulation accuracy of the power station shall be within the range of ± 1%: If the accuracy of the power supply is required to be high, the net steady-state frequency change of the power station shall be within the range of ± 0.6%:
c. The transient frequency change of the power station shall be within the range of 1% and the duration shall not exceed 5%; 5.4.3 The AC load shall be symmetrical and the degree of negative or positive asymmetry shall not exceed 15%; 5.4.4 The power station shall have measures to resist radio interference; 5.4.5 The power station shall have safety measures to prevent system overvoltage; 5.4.6 Parallel operation:
For power stations equipped with frequency regulation devices, the load distribution between units shall comply with the relevant provisions of the steel seagoing ship classification and discharge standards: b. For power stations with frequency regulation devices, the load distribution between units shall not exceed! The modulation characteristic should be within the range of ±1%, which has a great impact on the frequency modulation accuracy and the white power distribution. When the power distribution difference is less than 10%, the effective power distribution difference should not exceed 5%, and the nominal power distribution difference should be within the range of approximately 6%. 5.5 Daily power supply reliability and continuity requirements 5.5.1 For ships with special requirements for power supply in unlimited navigation areas, generally more than two power stations should be considered. 5-5.2 A power station should be composed of two or more units. When one unit stops working, it still has the power supply for the equipment necessary for normal operation and functional safety. When the driver stops working, the basic power supply information for many items of life is guaranteed. 5.53 The maximum capacity of the AC power station is considered. The maximum starting voltage generated by the maximum starting voltage and the low power internal excitation when the AC power station is running should not cause the motor to stop running or have adverse effects on other equipment in use due to the system voltage drop.
5.5. 4 When a 6-point power station is set, after the power station fails, within a period not exceeding 455, the power station should automatically start supplying power. 5.6 System protection
5.6.1 Short-circuit protection wwW.bzxz.Net
, short-circuit current calculation should be carried out during power station design; 3
GBT129B0---61
Short-circuit protection is a chain electrical device in the power supply system that connects the use requirements and selects the middle action and breaking rate points to protect the fault circuit. Before the short-circuit protection is activated, the current c is applied through the liquid.
d is quickly used as a circuit protection. 5.6-2 Overload protection
The overload protection of the generator should be adapted to the overload capacity of the machine. .Less than 1 must be rated value all over the cut-off, set to ", times the rated horse, the delay does not exceed 1, the design also issued and reported h,: for the enterprise heart between % and 5% of the rated value, when not more than 1.5 times the generator bottle horse, the breaker should be delayed 72min:
For example: when the power is 12~, 3%, the abandoned gas circuit breaker should delay 15~, for more than 50 new estimated less than the power generation expansion enterprise short-term power cut-off: after the system reverse selective protection document requires the short-term certificate, the air circuit breaker should be sequenced
For example: when the generator power is %~250, the air circuit breaker is disconnected in a short time, for DC, the maximum skin is G.2s Liu AC.:
d: three and three after! When the generator is parallel running, the air circuit breaker of the generator should be disconnected at the same time as the system supply voltage:
The core should be matched with the system supply voltage. A circuit breaker or switch with a circuit breaker should be used as an over-current protection. 5.6.3 Reverse power and reverse current protection
The generator set running in parallel should be equipped with a reverse power collection and protection device with a delay of 8~15 seconds. The high-current generator set running in parallel should be equipped with a reverse current protection device with a small action time. The setting value of reverse power current is as follows:
The rated power of the generator set (the current of the steam turbine generator) is 2%~.5. When the grid voltage is reduced by less than the new set value, the current protection should not fail, but its action value can be changed. It is allowed to use a diode as a reverse current protection for the generator set with a small action time. 5.6.4 Undervoltage protection
The generator's air circuit breaker is equipped with a positive tripping device. When the generator is not charged, there are measures to prevent the generator air circuit breaker from closing. When the bus loses power, there should be measures to prevent the air circuit breaker from closing on the bus. The delay protection device action value is set to the specified voltage. Action time: 1c does not have timely pressure protection expansion, the film is within the agreed good pressure of 40-75%. 5.7 Basic power station
. The machine is backed up, the control is in the expansion escape; the unit The speed adjustment can be done at the start, or it can be done on the main distribution board through an intermediate switch:
The main distribution board is equipped with common instruments for the unit, point pressure meter, rated rate meter, power meter, comprehensive measuring instrument (when the meter needs to be connected in parallel), electric meter, four-digit meter, etc., and personnel are equipped to complete the operations such as disconnection, paralleling, voltage regulation, connection, etc. Relevant switches, electrical appliances, indicator lights, etc. are provided: c The ship power station should be connected to the shore for power supply and the emergency power station should also be connected to the civilian power supply. The power distribution cabinet should be equipped with overload protection circuit, long-term protection circuit (power expansion) protection circuit, and have safety measures to prevent the system from over-current; When determining the cross-section of the busbar, attention should be paid to the short-term rise of the load that exceeds the allowable load of the electro-hydraulic type; 1: The front power distribution cabinet should be designed to withstand the influence of the current or thermal stress generated by the large increase in the current. 1: The power distribution cabinet should be equipped with a single-line circuit diagram or wiring board, and there should be no strange sign engraved on it. 5.8 half-white station
5. 8.1 5.8.2 Automatic control function GB/E: 2980--91 The user can choose the following classification method according to the use requirements to increase the function. Automatic classification: Automatic for smooth; Automatic adjustment: Electrician, thermal parameters measurement and adjustment, 5.8.3 For the current station card automatic control, for the milk group, the main distribution tax requirements should be zero according to the relevant requirements of 5.D 5.9 Automatic power station 5.9.1 should meet 5.7 The requirements of clauses a~g, 59.2 The monitoring system of the power station shall meet the requirements of the cycle value of the machine (additional mark AUT.0). And it shall meet the requirements of the steel quality standard of grade 2. Its main functions are as follows: 5.9.2.1 The automatic control system of the power station, or the continuity of operation and power supply: a
Micro-electric:
When a single unit in operation fails, the time from automatic start to no power supply should not exceed 15. When one or more units are in parallel operation, one of the units fails, and there are maintenance rules or other requirements for the continuous pressing of the vertical load to automatically increase or decrease the number of units in operation to achieve the automatic related operation of the over-specified problem: or realize the automatic release of the standby pressure unit, etc. 5.9.2.2 Safety system
Bottle locking:
5. 9. 2.3
When the power system is disconnected, the disconnected generator is released, or when the machine is running too slowly, the power plant equipment is important.
When the oil is too high
When the oil is too dense
When the power pool is running, the oil is too low
When the oil is too dense ... tt||Install this source
5.9.3 Requirements for special units and main product boards: CB/11298091
Technical items
For the sensor used for the control
, the special sensor should be set up accordingly: for the alarm state
, a DC 1V electric parking device should be set up: if there is no other requirement, a DC 24V servo speed regulating mechanism should also be used ：
A circuit breaker with inherent U.3s time limit should be selected first: In the same power station, there is only one quasi-synchronous device. If there is a quasi-synchronous circuit breaker, it should be equipped with a power supply next to the power distribution switch and the automatic control device in the room should provide internal power and signal input, and auxiliary output buckle ：6 Test methods
6.1 Factory or complete test equipment
Electrical receiving precision should not be less than 10.5, power constant value should not be less than 1.2.5, and the thermal workstation meter should be selected as appropriate, and the equipment should have a certificate of inspection and approval from the relevant department. b Equipment:
With dynamic shoes, good limit;
Invalid load, use linear reactor to reduce the inductive adjustment piece to make it work in non-ground and relatively high. 6.2 Power station equipment delivery test
6.2.1 The delivery test of power station equipment
shall be carried out according to the test methods specified in the technical conditions of the power distribution group, 6-2-2 Main power distribution, emergency distribution equipment [if equipped with factory test, the test method specified by the power distribution technical system department shall be carried out. 6.2.3 Factory inspection of white-manufactured equipment
According to the test methods specified in the technical conditions of household control equipment. 6.3 Power station component acceptance
6.3.1 Appearance inspection:
6.3.1.1 Appearance inspection
The delivery quality of the assembly team, the installation quality of various cleaning systems, oil sheaths, water tanks, transmission pumps and other accessories shall be inspected. The technical position of the box is normal, eliminate the air in the combustion system, check whether the air bottle pressure or the battery capacity is sufficient, and check whether the lower handle of each component is in the right position. Check the installation quality of the pressure sensor installed in the unit, and check whether the steam exchanger has light leakage, etc.
6.3.1.2 Distribution and control equipment appearance Check the instruments on the distribution board to see if there is any damage to the appearance. If the instrument is out of warranty, it should be re-inspected; a.
Check whether the connection button and switch are flexible and operable. Whether the indicator light is damaged; Check whether the phase sequence of the generator meets the requirements; Check the positive and negative poles of the generator and the busbar. 6.3.2 Unit starting test:
6.3.2.1 Starting test of diesel generator line
GH/r 12980.-91
When the ambient temperature is not less than 5℃ and the cooling water and lubricating oil are not preheated, the unit shall be started in the room at room temperature (heating measures shall be taken during starting). The unit shall be started six times in a row, and the unit shall be qualified if it succeeds at least once in six starts. The time interval between each start shall not exceed
. Determination of starting time: After the speed indicator is sent to the hourly speed position, an oscilloscope film shall be sent. 6.3.2.2 The starting test of the turbine generator shall be carried out under the condition of the machine running, and the hot steam shall be used to check the starting speed within the designed range. 8.3.3 Load test of the unit:| |tt||33.1 The load type of the whole generating set shall be connected to the negative test in Table 2. Table 2
Machine period. 5F
Let the driving time h
For the units with formula bases that have been through the matching test or the units with power less than 100kW, the time for the above 3 and 4 tests can be halved. 6.3.5.2 Emergency generating sets (if equipped with negative test, shall be carried out according to the provisions of Table 3?
T. Tax Office No.
Machine after load, 5
After the river. h
6.5.3.5 During the negative test, the main parameters of the unit shall be The number should be recorded well, full load, every time it falls! Record once, other working conditions should be recorded during the test, read the fire dragon level of the instrument or converter specified in the test, load test film, measure the thermal state of the generator and the coil rise of the current. 6.3.4 Insulation test:
Test chapter + distribution particles, emergency distribution. The insulation of the power generation must be determined under the conditions (when measuring the weight of the card looking for body type electrical equipment, the point can be grasped Yu effect".
The length of the distribution is not more than 6m, and its thermal insulation is not less than 1M. The length is m, and its thermal insulation is not T0.=M
The motor's cold state insulation resistance should not be less than 5MΩ, and the hot state insulation resistance should not be less than 32MΩ!. 6.3.5 Check the voltage and frequency regulation range of the machine: the no-load voltage should be within the rated range of 95%~.105, and the no-load frequency should be within the rated range of 9C%-110%. 6.3.6 Check the unit's voltage regulation rate and speed regulation rate. This test should be carried out on the no-load test circuit. After the unit speed regulation is adjusted to the set value, use the unit with a new load, the speed is the rated speed, and the ball is lowered. After unloading, the unit load is adjusted from no-load to 100% load, and then the unit load is 100% rated load. Keep the power factor at 0.8 (hysteresis), change slowly in one direction, measure at least 15 points on each branch, and include 26% load density, record the load, current, voltage and frequency values at each point,
Check the steady-state voltage regulation rate and speed regulation of the unit, which should meet the following requirements: the increase in the speed regulation rate is no more than 5%;
H/12980—51
The on-rate of the AC generator set is not more than 12.5%, and the on-rate of the DC generator set should not exceed 3.% at the new load. The delay rate of the DC generator is 2.5.6.3.? Check the transient change range of the current and the recovery rate of the unit: the transient current change rate and recovery time of the unit are determined, the unit is symmetrical after no-load sudden on-load current, the power is reduced to 0.4 (hysteresis), and use an oscilloscope to record the changes in the main line current. The machine maintains the speed regulation and stability between the lines. After partially unloading the load, add 50% of the rated load, and then add the rated total load after it is compensated. Use an oscilloscope (with instantaneous release measurement) to record the change of the load within a certain time. 3.8 Check the effectiveness and reliability of the control protection, reverse power protection and overload protection. 6.39 Parallel operation test
, the design requirements of the equipment involved in parallel operation are: h net parallel operation, the load shall be found from the total rated load of 25 to 1. The average power point is 0.8<0.8 gradually), and the average power point is 75. The load shall be increased or decreased according to the actual point. Please select the one-way rule. The points shall not be less than 7<75→35%→2%→0-75%-1C0%-75. After each test product is contained in the unit's heat, an integer shall be recorded, and the potential shall be moved. The point distribution difference shall be: C. Cargo transfer test:
d. Parallel operation at 90% rated load for 1h, white control function test:
machine dynamic start and shutdown test:
machine dynamic network test:
frequency and load adjustment test;
gradient unloading test;
automatic increase unit test:
t.After the power station is effective, the automatic start-up mode test should be carried out. The automatic power station should be tested according to the internal energy method. 8.4 The mooring and navigation test of the power station shall be carried out according to the provisions of G3. The starting, shutdown and increase of the steam turbine generator or gas generator shall meet the requirements of the relevant specifications of the steel quality inspection rules in the construction specification 3.1 The test of the power station shall be carried out according to the following Steps to be taken: 8: Factory test of power station equipment:
h. Case test of power station;
c. Mooring test and navigation test of power station. 7.2 The modified equipment of power station must be tested by the contractor, and it can be loaded on board only after approval by the inspection department! 7.3 When the inspection department requires it, the power station should be tested on land, and then installed after the standard is met. (4 years before the power station is built, the power station must be tested and the navigation test of the power station must be carried out. Attached:
China Shipbuilding Industry Corporation Technology Co., Ltd. This standard is issued by the Seventh Research Institute of China Shipbuilding Industry Corporation and the Director of Lanzhou Power Supply Research Institute. The main person in charge of this standard is Lei Zhanghui.3 When the inspection department requires it, or when the user needs it, the power station test should be carried out on land, and the specifications should be installed and used later. (4 years ago, the power station of the slow ship must be tested before the station, and the navigation test of the power station must be carried out. Attached:
Niu standard management China Shipbuilding Industry Corporation Technology, this standard is issued by China Shipbuilding Industry Corporation No. 7 Research Institute, Lanzhou Power Supply Research Institute, and the main person in charge of this standard is Lei Zhanghui.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.