Abstract: the pearl river power plant unit # 1 the exchange of information between electrical control system after modification effect produced by excellent
flow meter, flow meter manufacturer to offer you the quotation.
Foreword: the pearl river power plant was built in the early 90 s, capacity of 4300 mw coal-fired steam turbine unit, * units is into commercial operation in March 93.
Design and selection of electrical equipment and auxiliary equipment configuration is the level of the early 70 s, a unit of electrical control panel.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is the pearl river power plant unit # 1 after transforming effect communication article details the electric control system.
Foreword: the pearl river power plant was built in the early 90 s, installed 4 & times;
300 mw coal-fired steam turbine unit, * units is into commercial operation in March 93.
Design and selection of electrical equipment and auxiliary equipment configuration is the level of the early 70 s, a unit of the electrical control panel is the five surface, is the traditional LW2 series control switch, XD10/220 v and MK - light plate
9 position indicator measuring equipment, electric parameters and electromagnetic magnetoelectric indicator, relay protection devices are all Xu Ji factory production of electromagnetic rectifier type relay, these scattered equipment installation, external connection is multifarious, operation, maintenance, maintenance workload is bigger.
Now, the development of science and technology changes with each passing day, the electricity production with the market need to constantly adjust, facing the severe situation, our factory electrical control equipment far couldn't keep up with the rhythm of the market changes, also can not adapt to the need of modern operation mode change.
Therefore, technical renovation is the only way to improve the level of equipment automation operation.
After half a year,
6-2001
December)
Research, collecting each manufacturer technical parameters of control system equipment, index, adopted comprehensive equilibrium development and production of XDPS - Shanghai xinhua control engineering
400 distributed control system to realize the pearl river power plant unit # 1 (
Machine, furnace, electric equipment)
The integration of control.
A, electrical equipment control system (
The ECS)
1.
ECS system hardware components: 1.
1 dpu and various I/O card ark (
# 33, # 35),
1.
All electrical equipment I/O terminal cabinet (2
# # 34, 36 ark)
1.
Three output extension relay cabinet (
# 42 ark)
2.
ECS system controlled scope: 2.
1 generator -
Transformer unit electrical equipment once set of logical control, interlock, electrical measuring circuit and protection on export signal.
2.
2 generator excitation system of logic control, interlock, electrical measuring circuit and signal.
2.
36 kv busbar system distribution equipment and 380 v system contact switch control, interlock, electrical measuring circuit and the equipment protection on export signal.
2.
Rev/equipment (405 t
220千伏/ 6 kv)
And public 6 kv system backup branch distribution equipment control, interlock, electrical measuring logic circuit and protection on export signal.
3.
The ECS has the function of: 3.
1 with all participate in the transformation of equipment control, interlock, the electrical parameters of measurement, and can be displayed on the screen the equipment status, working condition of each system.
3.
2 hair -
Variable set and power distribution equipment accident, trailer, protection action after the alarm, light plate display, historical standing, reminiscing about printing.
3.
Three automatic functions;
3.
3.
1 generator sequence control automatic booster automatic quasi-synchronizing parallel.
3.
3.
2 generator, automatic switching operation between excitation.
3.
3.
Automatic switch (3 auxiliary power according to load
Spare cutting machine, the machine cut the spare)
Second, the organization construction equipment technical reform is different from the installation of new equipment, it should fully comprehensive consideration, to transform, to keep equipment reasonable yan, about construction safety equipment, and strictly control the construction quality and progress of transformation equipment, particularly in the power load to jump, thickening of guangdong, a 300 mw unit overhaul period is generally 60 days, to finish machine, furnace, electric synchronization DCS transformation, this task is prior to the newly installed a (
300MW）
Control equipment of the unit work more than a third.
I plant maintenance department staff and leaders after several refinement of renovation work, reasonable combination of human resources, through the use of scientific management means, make the whole transformation obtained good effect.
2.
1 reconstruction task and period distribution (
Note: as used in the transformation of the cable appear quality problem, cause rework waste time nearly 20 days, this paragraph of time not counted in the construction time.
）
Equipment installation and wiring of the specification is the basis of debugging quality, strict technology requirements of the installation, wiring, can bring convenient to debug, less detours, shorten the debugging time, improve the efficiency of the debugging.
2.
Cable appeared quality problem, two static debugging by delayed nearly two days, but the debugging work is not so in terms of quality.
In the whole process of debugging, we did it seriously, careful and comprehensive.
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mass flow meter is increasingly important, the researchers believe manufacturers should pay close attention to their results.
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