Head-machine first water pump behavior full-group start test method for pump storage plant

Abstract

The invention discloses an initial whole-unit start-up test method of a first unit of a pumped storage station in a water pump operating condition. The test method sequentially comprises a unit water pump operating condition test, a unit power generation operating condition no-load test, a unit power generation operating condition load test, an operating condition conversion test and an emergencyshutdown test. The unit water pump operating condition test comprises the following steps: a. the water pump operating condition no-load test: the unit is started by a static frequency converter and is connected with an power grid for operation in a gate closure state and impellers are in air; b. the water pump operating condition pumping test: when the pumping operating condition is stable, a synthetic curve of hydraulic turbine / pump is drawn; and c. the water pump operating condition shutdown test: the unit operates at rated load, stops by simulating a mechanical breakdown and a breakdown caused by that electrical protection action trips off a circuit breaker, corrects gate closure rules, and optimizes procedure parameters. The initial first-unit water pump operating condition startup proposal is used, which is beneficial to saving construction cost, can advance power generation of the first-unit, and provides good social and economic benefits.

Description

1. Technical field: [0001] The invention relates to a start-up test method for a whole group of a pumped-storage power station, in particular to a start-up test method for a whole set of pumps in the first working condition of the first unit of a pumped-storage power station. 2. Background technology: [0002] With the development of the power industry, the capacity and coverage of the power grid are rapidly expanding, and problems such as power grid peak regulation, emergency backup and black start are becoming more and more prominent. Moreover, my country's economic development and the geographical distribution of hydropower resources are very uneven, which brings greater difficulties in peak regulation to the power grid in the eastern region where hydropower resources are scarce. Building a pumped storage power station is an economical and efficient way to solve the above problems. [0003] The pumped storage power station is composed of upper reservoir, lower reservoir,...

AI Technical Summary

Problems solved by technology

This is not only limited by the construction completion time and water filling time of the upper reservoir, but also has the problem of large power consumption for water filling